The ABCB family belongs to the larger superfamily of ATP-binding cassette (ABC) transporters, membrane proteins found from bacteria to humans that burn cellular energy in the form of ATP to pump molecules across membranes. In plants, ABC transporters ferry an astonishing variety of cargo: defense compounds, heavy-metal chelators, waxes and, critically, phytohormones. Within this superfamily, the B subgroup—full-length transporters containing both nucleotide-binding domains and transmembrane domains—has attracted particular attention because several of its members in the reference plant Arabidopsis thaliana are proven hormone movers. AtABCB1 and AtABCB19, for instance, are celebrated auxin efflux carriers that help establish the localized auxin gradients sculpting virtually every organ of the plant, and recent structural work has revealed that AtABCB19 also exports brassinosteroids, the steroid hormones that drive stem elongation, vascular development and stress resilience.

What happens to these functions in crop plants with larger, more complex genomes has been far less clear. The Brassica genus, which includes cabbage, broccoli, oilseed rape and choy sum, descended from a common ancestor with Arabidopsis through extensive whole-genome triplication followed by diploidization and rearrangements, meaning that for every Arabidopsis ABCB gene there may be several Brassica relatives whose functions have diverged, specialized or been lost. Floting Chinese cabbage is an economically important vegetable in southern China, and its tall, succulent stalk is the product of vigorous cell elongation intimately tied to brassinosteroid and auxin action—making it an ideal system in which to ask what the ABCB repertoire is doing.

To answer that question, the team carried out a genome-wide survey of the B. rapa var. parachinensis genome, an effort made feasible by a recent high-continuity genome assembly of the species. Using rigorous bioinformatic screening, they identified 36 BraABCB genes and constructed phylogenetic trees that placed them into four evolutionary groups, consistent with the canonical architecture of ABCB families described in other angiosperms. Conserved domain analysis confirmed that the predicted proteins carry the hallmarks expected of functional transporters:Walker A and Walker B motifs and the signature C-loop within the nucleotide-binding domains, together with the membrane-spanning α-helices that form the translocation pathway. When Arabidopsis ABCB proteins were included in the phylogeny, the BraABCB27 and BraABCB28 proteins clustered tightly with AtABCB1 and AtABCB19, immediately flagging them as the closest functional relatives of the best-characterized hormone transporters in any plant.

Evolutionary forensics added context to this inventory. The researchers mapped each BraABCB gene to its position on the ten chromosomes of the species and examined collinearity—the synteny between genomic regions—to trace how the family expanded. Synonymous and nonsynonymous substitution rates (Ka/Ks) calculated for duplicated gene pairs told a story of constraint: with Ka/Ks values well below one, most BraABCB paralogs have been maintained under purifying selection, meaning that the protein-coding sequences have been preserved largely intact since their duplication. In other words, the family did not balloon through sloppy replication but rather through ancient genome duplication events whose products the plant has carefully conserved—an evolutionary signature typically associated with genes that matter.

But conservation at the sequence level is only a hypothesis about function; the real test lies in where the genes are switched on and what the proteins do. The group focused its experimental attention on Group IV, the clade containing the AtABCB1/19 relatives. Mining the promoter regions upstream of these genes revealed a rich catalog of cis-regulatory elements implicated in hormone responsiveness and abiotic stress, including motifs associated with drought, heat, and both auxin and brassinosteroid signaling. To put these predictions to the test, the researchers grew choy sum seedlings under several perturbations—drought stress, elevated temperature, exogenous application of the bioactive brassinosteroid brassinolide, and treatment with the primary natural auxin, indole-3-acetic acid—and quantified the expression of selected Group IV BraABCB genes by reverse-transcription quantitative PCR using the standard 2^-ΔΔCT method. The results were striking in their diversity: individual family members responded differently and often in opposite directions to the same stimulus, indicating that the Brassica expansion of this family is not mere redundancy but a differentiated toolkit, with distinct transporters likely deployed in different tissues, developmental stages and environmental contexts.

Subcellular localization supplied a further piece of the puzzle. Because ABCB transporters must sit in a membrane to move hormones across it, the team fused Group IV BraABCB proteins to fluorescent reporters and expressed the constructs to determine where the fusion proteins accumulated in living cells. The analyses showed predominant localization to the plasma membrane, exactly where an efflux carrier engaged with extracellular signaling and long-distance hormone movement would be expected to reside. This placement also matters for a second reason: the brassinosteroid receptor itself, BRI1 (BRASSINOSTEROID-INSENSITIVE 1), is a leucine-rich repeat receptor kinase embedded in the plasma membrane, discovered in the 1990s as the cell-surface sensor for the steroid hormones. If ABCB transporters share membrane real estate with BRI1, opportunities for physical and functional crosstalk multiply.

That possibility is precisely where the new study makes its most intriguing contribution. In Arabidopsis, a regulatory protein called TWISTED DWARF1—an immunophilin-like co-chaperone—has been shown to associate physically with BRI1 and to be required for the full activity of the ABCB1- and ABCB19-mediated auxin transport machinery; mutations in the corresponding gene produce pleiotropic, hormone-defective growth phenotypes, and the interplay between ABCB transporters and BRI1-related membrane complexes has become a model of how transport and signaling are coordinated at the cell surface. Using bimolecular fluorescence complementation (BiFC), a technique in which two proteins are fused to halves of a fluorescent protein so that a physical interaction brings the halves together and restores fluorescence, together with a split-ubiquitin yeast two-hybrid assay that is better suited to membrane proteins, the Guangzhou University team tested whether the choy sum homologs could engage BRI1-related proteins. The answer was yes: BraABCB27 and BraABCB28, the two closest relatives of AtABCB1 and AtABCB19, showed detectable physical associations with BRI1-related proteins in both systems.

The authors are careful in their claims—and appropriately so. Detecting an association is not the same as demonstrating a transport function, and the study stops short of showing that BraABCB27 and BraABCB28 actually pump brassinosteroids or auxin in planta. What the work provides instead is a complete, experimentally grounded framework: a full inventory of 36 genes with their evolutionary history, a demonstration that Group IV members are stress- and hormone-responsive, confirmation of plasma-membrane targeting, and two strong candidates whose interaction with BRI1-related proteins now invites direct functional interrogation. The logical next steps—CRISPR knockout or overexpression of BraABCB27 and BraABCB28, followed by measurements of stalk elongation, brassinosteroid distribution and auxin gradients—would test whether these transporters are genuinely part of the machinery that regulates the trait for which choy sum is grown.

The broader implications reach beyond a single vegetable. Brassinosteroids have become a major focus of crop engineering because of their capacity to enhance yield, stress tolerance and architectural traits, and recent structural biology has revealed the atomic details of how the Arabidopsis ABCB1 and ABCB19 transporters export these steroids. Whether the same transport-signaling coupling exists in Brassica crops—and how the triplicated genome has diversified it—remains open, but this study supplies the map on which such questions can now be asked. For breeders seeking taller stalks, denser flowering or improved drought resilience in flowering Chinese cabbage, the BraABCB family just moved from anonymous genomic baggage to a shortlist of actionable targets. And for plant biologists more generally, the finding that ABCB-BRI1 associations are conserved in a distantly related crop reinforces an emerging picture: in plants, hormone transport and hormone perception are not separate layers of regulation but physically intertwined systems working at the same membrane, in the same cells, at the same time.

Unlike animals, which predominantly utilize 3’,5’-cAMP as a well-known second messenger involved in a diverse array of physiological processes—ranging from neurotransmission to hormonal regulation—plants harbor significantly elevated concentrations of the less-studied 2’,3’-cAMP isomer. Remarkably, the intracellular levels of 2’,3’-cAMP in the model plant Arabidopsis thaliana exceed those of 3’,5’-cAMP by more than 60-fold, a finding that challenges conventional paradigms of plant cAMP signaling. This discovery invites a fundamental reassessment of the biochemical pathways and cellular contexts in which these molecules exert their functions within the plant kingdom.

At the molecular level, the two cAMP isomers differ structurally by the position of the phosphate group attachment to the ribose sugar ring, which in turn affects their interactions with target proteins, including kinases, phosphodiesterases, and regulatory effector molecules. While 3’,5’-cAMP has been implicated in modulating fine-tuned physiological processes such as growth regulation, nutrient sensing, and routine cellular maintenance, 2’,3’-cAMP emerges as a potent signal in activating wide-ranging metabolic pathways integral to stress mitigation. This includes initiation of RNA decay pathways, activation of defense mechanisms, and broader reshaping of gene expression profiles in response to abiotic and biotic stressors.

Compounding the novelty of these findings is the observation that these two signaling branches exhibit a coordinated interplay, termed ‘crosstalk,’ which may allow plants to differentiate between subtle environmental cues and initiate context-dependent responses. This redundancy ensures that when one pathway is compromised, the other can largely compensate, enhancing the resilience of the plant to environmental perturbations such as drought, heat, flooding, and pathogen attack. Through this evolutionary innovation, plants have effectively developed a layered signaling architecture that affords flexibility and durability in their stress adaptation responses.

The experimental approach leveraged an arsenal of molecular biology techniques, including quantitative mass spectrometry, gene expression analysis, and mutant phenotyping in Arabidopsis thaliana. These methodologies allowed the researchers to dissect downstream effects of each cAMP isomer on protein function and gene regulatory networks. They delineated the distinct yet overlapping transcriptional landscapes modulated by the two cAMP forms, confirming their divergent but sometimes convergent roles in orchestrating plant physiological homeostasis and stress resilience.

This dual cAMP system also offers substantial implications for agricultural biotechnology. By manipulating these pathways, it may be possible to engineer crops with enhanced ability to maintain productivity under increasingly unpredictable climate conditions. As global temperatures rise and extreme weather events intensify, understanding and harnessing such intrinsic signaling redundancies will be critical to securing food supplies. The ability to fine-tune plant responses to both common maintenance signals and acute stress signals opens a promising avenue for developing climate-resilient crop varieties.

Moreover, this study exemplifies the importance of studying cross-kingdom differences in cellular signaling. Although animals and plants share many biochemical motifs, this research underscores that assumptions drawn from animal models cannot always be extrapolated to plants. It highlights the necessity for plant-specific studies to unravel unique signaling paradigms shaped by millions of years of evolutionary divergence. The distinct utilization of 2’,3’-cAMP in plants serves as a compelling example of such evolutionary innovation.

The research team behind this work represents an international collaboration extending beyond ISTA to Germany, Saudi Arabia, the Czech Republic, and the United States. This collective effort showcases the power of global scientific cooperation in addressing fundamental biological questions and producing insights with broad agricultural and environmental relevance. Together, they have laid the groundwork for future investigations into plant signal transduction pathways and their practical applications.

Looking forward, further dissection of the signaling components that interpret and amplify each cAMP isomer’s signals will illuminate additional layers of complexity in plant stress physiology. Identification of receptor candidates, second messengers downstream, and feedback control mechanisms may uncover new molecular targets for bioengineering. As our understanding deepens, novel strategies to bolster plant health and productivity in the face of climate change may emerge from this foundational research.

This seminal study not only enriches the fundamental understanding of plant molecular biology but also addresses urgent global challenges by providing an informed basis for enhancing crop resilience. The revelation of two distinct yet interlinked cAMP pathways driving complementary cellular responses illustrates how plants have evolved sophisticated molecular tools to survive and thrive. It serves as a testament to nature’s capacity for innovation and adaptability, inspiring future exploration into the elegant complexity of plant life.

Subject of Research:
Plant signaling molecules and stress response mechanisms.

Article Title:
Biogenesis and downstream effects of 3′,5′ and 2′,3′ cAMP isomers in plants

News Publication Date:
8 May 2026

Web References:
https://doi.org/10.1126/sciadv.aea7828

Image Credits:
© ISTA

Keywords

cAMP signaling, plant stress response, Arabidopsis thaliana, signal transduction, plant metabolism, cellular signaling pathways, environmental adaptation, molecular biology, protein regulation, gene expression, crop resilience, climate change adaptation

Meiosis, a specialized form of cell division that generates gametes, is fundamental for sexual reproduction. Central to this process is the pairing of homologous chromosomes, known as synapsis, and the carefully regulated exchange of genetic material called crossover. These events ensure genetic diversity while maintaining chromosomal integrity across generations. However, the precise molecular machinery governing the initiation of synapsis and the distribution pattern of crossovers has remained enigmatic — until now.

At the heart of this revelation is SCEP3, a protein hitherto underappreciated in the landscape of meiotic regulation. Traditionally overshadowed by other components of the synaptonemal complex, SCEP3 has been uncovered as a master initiator of synapsis. By directly facilitating the physical pairing of homologous chromosomes, SCEP3 triggers a cascade of molecular events essential for the progression of meiosis. The research team employed state-of-the-art imaging and genetic manipulation techniques to reveal that without functional SCEP3, synapsis initiation fails catastrophically, stalling meiotic progression and leading to pronounced fertility defects.

Beyond initiation, SCEP3 exhibits a striking role in governing crossover interference—a phenomenon where the formation of one crossover event reduces the likelihood of another nearby, ensuring even distribution and preventing genetic mishaps. This nuanced control was elegantly demonstrated through quantitative genetic assays coupled with fluorescence microscopy, which showed that SCEP3 tethered crossover placement with remarkable precision. Mutant lines deficient in SCEP3 presented a disordered landscape of crossover events, undermining chromosomal stability and hinting at the protein’s architectural influence in chromosomal dynamics.

Delving deeper into the biochemical underpinnings, the study revealed that SCEP3 functions as a structural scaffold, recruiting and stabilizing multiple protein complexes that form the synaptonemal complex. This multiprotein assembly not only mediates synapsis formation but also interfaces with crossover designation proteins, thereby embedding crossover interference within the synaptic framework. Such an integrative role positions SCEP3 as a linchpin modulating the spatial and temporal coordination of meiotic events.

Intriguingly, the researchers identified that the action of SCEP3 is finely tuned by post-translational modifications, including phosphorylation patterns that adapt the protein’s activity to the meiotic stage and chromosomal context. This regulatory sophistication nuances our understanding of how meiotic fidelity is preserved through dynamic protein modifications, aligning with broader themes of cellular checkpoints and genome surveillance in plant cells.

The implications of these findings ripple beyond the confines of basic science, touching the realms of crop improvement and synthetic biology. By harnessing the mechanistic insights into SCEP3’s control over crossover interference, agricultural biotechnologists can envision strategies to modulate genetic recombination rates, potentially accelerating breeding programs aimed at enhancing yield, stress resistance, and adaptability in key crops. This study thus serves as a nexus between molecular biology and agronomy, promising tangible benefits for global food security.

Moreover, this work elevates Arabidopsis as an even more valuable model for dissecting complex chromosome dynamics, offering a new protein target for comparative studies across diverse plant species and perhaps even wider eukaryotic lineages. SCEP3’s conservation and functional analogs in other organisms may unravel universal principles governing meiotic regulation, broadening our grasp of evolutionary genetics.

Advanced microscopy techniques, including super-resolution imaging and live-cell tracking, played a crucial role in this investigation. The visualized choreography of chromosome pairing provided compelling evidence for SCEP3’s timing and localization relative to other synaptonemal components. This methodological finesse ensures that the conclusions drawn are not only robust but also pave the way for future explorations of meiotic architecture at unprecedented resolution.

By integrating genetic, biochemical, and cytological data, the researchers crafted a comprehensive model positioning SCEP3 at the nexus of meiotic control. Their proposed framework highlights a feedback loop where SCEP3-mediated synapsis promotes crossover formation, which, in turn, modulates further synaptic adjustments. This dynamic interplay underscores the remarkable precision with which plants regulate their genome organization during gamete formation.

This study’s success owes much to interdisciplinary collaboration, weaving together expertise in molecular genetics, protein chemistry, and plant biology. The resultant synergy underscores how modern science thrives on blending perspectives to crack intricate biological codes. The work thus stands as a testament not only to its scientific achievements but also to the collaborative spirit fueling innovation.

Looking ahead, the identification of SCEP3 as a critical player invites numerous questions: What are the exact molecular interactions between SCEP3 and other synaptonemal components? How might environmental cues modulate SCEP3 activity? Can engineered modification of SCEP3 pathways reliably enhance desired recombination outcomes in diverse crops? These avenues beckon, promising a rich vein of inquiry inspired by this seminal discovery.

In sum, the characterization of SCEP3 as an initiator of synapsis and an implementer of crossover interference revolutionizes our conceptualization of meiotic mechanics in plants. It provides a molecular cornerstone that bridges chromosome pairing and crossover regulation, solving longstanding puzzles while igniting fresh scientific aspirations. Such advances underscore the profound power of molecular biology to decode life’s most fundamental processes—and to translate that knowledge into innovations with lasting societal impact.

As the scientific community digests this breakthrough, the broader impact of understanding and manipulating meiosis becomes increasingly tangible. From biotechnology startups to academic laboratories, the tools and insights derived from SCEP3 promise to reshape plant genetics and breeding for decades to come. This study’s fusion of molecular detail with potential agricultural application exemplifies the ideal trajectory of contemporary science—deep, transformative, and profoundly relevant.

For anyone interested in the future of plant genetics, these findings signal a watershed moment. SCEP3’s dual role in synapsis and crossover interference provides a vivid molecular narrative that will influence research agendas and applied science alike. As research continues to build on this foundation, we stand poised to unlock ever more precise genetic control, heralding a new era in both basic biology and crop innovation.

Subject of Research:
Meiotic chromosome synapsis and crossover interference mechanisms in Arabidopsis thaliana

Article Title:
SCEP3 initiates synapsis and implements crossover interference in Arabidopsis

Article References:
Seear, P.J., Dowling, H.J.A., Szymańska-Lejman, M. et al. SCEP3 initiates synapsis and implements crossover interference in Arabidopsis. Nat. Plants (2025). https://doi.org/10.1038/s41477-025-02155-x

Image Credits:
AI Generated

DOI:
https://doi.org/10.1038/s41477-025-02155-x

At the heart of this revelation lies the Dof domain of CYCLING DOF FACTOR 1 (CDF1), a transcription factor extensively studied for its function as a repressor by binding to the promoter region of the CONSTANS gene, a major player in photoperiodic flowering control. Despite prior knowledge of Dof proteins’ biological significance, the mechanistic details of how the conserved Dof domain recognizes its DNA targets—in particular the short four-nucleotide motif, AAAG or its complementary sequence CTTT—remained enigmatic. Using cutting-edge crystallographic techniques, researchers have now mapped the high-resolution structure of the CDF1 Dof domain in complex with DNA encompassing two cis-regulatory elements, unveiling unprecedented insights into its molecular geometry and mode of DNA engagement.

The structural snapshot reveals that the Dof domain adopts a unique zinc ribbon fold, divergent from classical DNA-binding motifs such as zinc fingers or helix-turn-helix structures prevalent across other eukaryotic transcription factors. This fold is composed of a three-stranded antiparallel β-sheet coupled with a distinctive carboxy-terminal loop, a configuration that appears to choreograph the interaction landscape of the protein with the DNA helix. The zinc ion, coordinated precisely within this ribbon fold, acts as a structural linchpin stabilizing the domain’s conformation, thereby enabling a highly specific and stable DNA-binding interface.

One of the most remarkable findings is how the Dof domain induces a directional expansion of the major groove of the DNA. Traditional DNA-binding proteins often fit snugly within the confines of the major or minor groove, recognizing base pairs through hydrogen bonds and shape complementarity. In contrast, CDF1’s Dof domain appears to modulate the topology of the DNA helix itself, prying open the major groove in a controlled manner to accommodate contiguous binding sites. This architectural manipulation facilitates the cooperative binding of CDF1 molecules to adjacent cis elements, orchestrating a more robust repression complex on the CONSTANS promoter.

The implications of this groove expansion are profound, as it permits Dof domains to recognize composite DNA motifs in a precise spatial arrangement, bolstering their regulatory potency. Such an elegant mechanism elucidates how specificity can be achieved despite the brevity of the recognized nucleotide sequence, a question that has posed a longstanding conundrum in the field. Moreover, this structural adaptation may represent a wider evolutionary strategy employed by plant-specific transcription factors to overcome the constraints imposed by their short recognition motifs.

Beyond structural intricacies, the study provides a blueprint for understanding the functional dynamics of photoperiodic flowering regulation. CONSTANS is a critical gene whose expression is finely controlled by environmental cues, predominantly light duration, to ensure flowering occurs at ecologically optimal times. By functioning as a transcriptional repressor through its interaction with the CONSTANS promoter, CDF1 integrates temporal signals to modulate flowering time, a process vital for reproductive success and yield in crops. Detailed knowledge of CDF1’s DNA-binding mechanism offers fertile ground for manipulating flowering responses in crops, potentially accelerating improvement efforts in the face of climate change.

Technological advances in X-ray crystallography played an instrumental role in capturing this molecular interplay at atomic resolution. Crystals of the CDF1 Dof domain were meticulously grown in complex with carefully designed DNA sequences containing the relevant cis-regulatory elements. Analysis revealed not only the protein’s intricate folding but also the precise contacts with nucleotides, including backbone interactions and base-specific recognition, all contributing to the exquisite selectivity observed. Such high-resolution data empower researchers to rationally engineer Dof domains or design synthetic transcription factors mimicking these characteristics for plant biotechnology applications.

Intriguingly, this research also dismisses a simplistic one-to-one interaction model between Dof domains and DNA sequences. Instead, the findings point toward a multivalent mode of binding, where multiple Dof proteins can assemble cooperatively on tandem cis elements. This cooperative binding is likely facilitated by the structural configuration that expands the major groove and aligns adjacent binding sites, thereby enhancing binding affinity and specificity in vivo. This dynamic assembly could serve as a molecular switchboard for complex gene regulatory networks in plants.

From an evolutionary perspective, the unique zinc ribbon fold discovered in CDF1’s Dof domain underscores the specialized adaptations plants have evolved to control their gene expression machinery. Not present in animal systems, these plant-specific folds highlight the divergent evolutionary paths that underlie transcription factor diversification. Understanding such distinct molecular architectures provides profound insights into how plants sculpt their developmental programs and respond to environmental cues.

At the functional interface, the interaction of CDF1 with the CONSTANS promoter exemplifies how transcriptional repressors can exert tight control over important developmental genes. The repression exerted by Dof proteins like CDF1 is not merely a blockade; rather, it represents a nuanced regulatory interaction involving DNA remodeling and cooperative binding that collectively fine-tune gene expression patterns. This nuanced control manifests as an integrated response that temporally aligns flowering with day length, a cornerstone for plant adaptation and survival.

The research also hints at the broader family of Dof proteins and their potential application in crop biotechnology. Since Dof proteins regulate diverse biological processes spanning seed development, photosynthesis, and stress responses, deciphering their DNA-binding mechanics could unlock new avenues to improve crop performance. Harnessing the unique binding properties revealed by this study could lead to novel transcriptional modulators capable of rewiring plant gene expression networks with precision.

Furthermore, the clarity offered by this structural insight reshapes our understanding of plant transcription factors as dynamic architects of chromatin landscapes. By directing conformational changes in DNA and recruiting co-regulators, Dof proteins may act as pioneering factors, setting the stage for downstream regulatory events. Such a viewpoint underscores the importance of three-dimensional structural information to fully appreciate gene regulation complexity beyond linear DNA sequences.

Looking ahead, the knowledge of Dof domain-DNA interaction opens the door for synthetic biology approaches to engineer custom transcription factors for plant systems. By mimicking or modifying the unique zinc ribbon fold and groove-expansion strategy, scientists could design programmable DNA-binding proteins with tunable specificity. Such tools would be invaluable for crop improvement strategies aimed at enhancing yield, stress tolerance, or developmental timing under changing environmental conditions.

Importantly, the discovery also enriches the fundamental molecular biology canon by expanding the repertoire of known DNA-binding motifs and their modes of interaction. It challenges prior classifications of transcription factor domains and inspires the search for other unconventional folds that may mediate highly specific DNA recognition. This could have ripple effects in related fields, including epigenetics and genome engineering, where targeted DNA interaction is paramount.

In sum, this landmark study transcends mere structural characterization, providing a comprehensive molecular narrative explaining how a plant-specific transcription factor exerts precise control over a key developmental gene. By unveiling the unique zinc ribbon fold and its capacity to modulate DNA architecture, researchers have elucidated a previously hidden layer of transcriptional regulation in plants. This understanding not only advances fundamental plant science but also propels the potential for biotechnological innovations in agriculture.

As global challenges mount, including the pressing need for sustainable food production and climate resilience, such foundational research equips scientists and breeders with the molecular tools and concepts necessary to engineer smarter crops. The ability to manipulate flowering time and other vital traits at the transcriptional level is a powerful lever in this endeavor. This study, therefore, marks a critical step forward in decoding and harnessing the sophisticated regulatory language plants use to thrive in diverse environments.

It is a testament to the synergy between structural biology, plant genetics, and biotechnology that molecular vistas once obscure are now coming into sharp focus. With ongoing efforts to expand our structural and functional understanding of plant transcription factors, the coming years promise more revelations that will deepen our command over plant biology and its applications for humanity’s benefit.

Subject of Research: The structural basis of DNA recognition by plant-specific DNA-binding with one-finger (Dof) transcription factors, specifically the CDF1 Dof domain’s interaction with the CONSTANS promoter.

Article Title: Structural insights into CDF1 accumulation on the CONSTANS promoter via a plant-specific DNA-binding domain.

Article References:
Furihata, H., Zhu, Z., Nishida, K., et al. Structural insights into CDF1 accumulation on the CONSTANS promoter via a plant-specific DNA-binding domain. Nat. Plants 11, 836–848 (2025). https://doi.org/10.1038/s41477-025-01946-6

Image Credits: AI Generated

DOI: https://doi.org/10.1038/s41477-025-01946-6