ArticlePlant communications2024
Cotton BLH1 and KNOX6 antagonistically modulate fiber elongation via regulation of linolenic acid biosynthesis.
Article in Plant communications, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 9 papers.
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Who cites it
9 citing papers in PubMed, 16 citations in OpenAlex.
- T2T and chromosome-level genome assemblies provide insights into the genetic basis of bioactive compound biosynthesis and environmental adaptation in licorice.Science China. Life sciences · 2026Article
- Characterization of BrSTM16 from Brassica rapa and functional analysis of its role in regulating cold tolerance.BMC plant biology · 2026Article
- An alpha/beta-hydrolase-like gene (GhABH) is identified to be responsible for fiber quality from a multi-effect quantitative trait locus (QTL) on chromosome A06 of upland cotton.TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik · 2025Article
- Time-Course Transcriptome, Metabolome, and Weighted Gene Co-Expression Network Analysis Reveal the Roles of thePlants (Basel, Switzerland) · 2025Article
- BLH3 Regulates the ABA Pathway and Lignin Synthesis Under Salt Stress inPlants (Basel, Switzerland) · 2025Article
- Genes Affecting Cotton Fiber Length: A Systematic Review and Meta-Analysis.Plants (Basel, Switzerland) · 2025Article
- Comparative Transcriptome Analysis ofGenes · 2024Article
- Transcriptional engineering for value enhancement of oilseed crops: a forward perspective.Frontiers in genome editing · 2024Review
- Leveraging transcriptomics-based approaches to enhance genomic prediction: integrating SNPs and gene networks for cotton fibre quality improvement.Frontiers in plant science · 2024Article
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Authors and funding
7 authors at 4 institutions in 2 countries.
Funding
Abstract
BEL1-LIKE HOMEODOMAIN (BLH) proteins are known to function in various plant developmental processes. However, the role of BLHs in regulating plant cell elongation is still unknown. Here, we identify a BLH gene, GhBLH1, that positively regulates fiber cell elongation. Combined transcriptomic and biochemical analyses reveal that GhBLH1 enhances linolenic acid accumulation to promote cotton fiber cell elongation by activating the transcription of GhFAD7A-1 via binding of the POX domain of GhBLH1 to the TGGA cis-element in the GhFAD7A-1 promoter. Knockout of GhFAD7A-1 in cotton significantly reduces fiber length, whereas overexpression of GhFAD7A-1 results in longer fibers. The K2 domain of GhKNOX6 directly interacts with the POX domain of GhBLH1 to form a functional heterodimer, which interferes with the transcriptional activation of GhFAD7A-1 via the POX domain of GhBLH1. Overexpression of GhKNOX6 leads to a significant reduction in cotton fiber length, whereas knockout of GhKNOX6 results in longer cotton fibers. An examination of the hybrid progeny of GhBLH1 and GhKNOX6 transgenic cotton lines provides evidence that GhKNOX6 negatively regulates GhBLH1-mediated cotton fiber elongation. Our results show that the interplay between GhBLH1 and GhKNOX6 modulates regulation of linolenic acid synthesis and thus contributes to plant cell elongation.
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