ArticleJournal of advanced research2025
NAC transcription factor GbNTL9 modifies the accumulation and organization of cellulose microfibrils to enhance cotton fiber strength.
Article in Journal of advanced research, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.
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Who cites it
4 citing papers in PubMed.
- A Natural LTR Retrotransposon Insertion in the Promoter of GhNAC140-Dt Boosts Cotton Lint Yield.Plant biotechnology journal · 2026Article
- Identification of Key Genes for the Simultaneous Improvement of Fiber Strength and Lint Percentage inInternational journal of molecular sciences · 2026Article
- Identifying Candidate Genes for Cotton Fruit Branch Length Using BSA-Seq and RNA-Seq.Plants (Basel, Switzerland) · 2026Article
- Identification and Expression Analysis of NAC Transcription Factors Related to Rust Resistance in Foxtail Millet.Plants (Basel, Switzerland) · 2025Article
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Authors and funding
12 authors.
Funding
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Abstract
introductionFiber strength is a critical determinant of fiber quality, with stronger fibers being highly preferred in the cotton textile industry. However, the genetic basis and the specific regulatory mechanism underlying the formation of cotton fiber strength remain largely unknown.
objectivesTo explore fiber strength-related genes, QTL mapping, map-based cloning, and gene function verification were conducted in a backcross inbred line BS41 derived from interspecific hybridization between upland cotton and sea-island cotton.
methodsUpland cotton Emian22 (E22) and an interspecific backcross inbred line (BIL) BS41 were used as parents to construct secondary segregation populations for BSA and QTL mapping of fiber strength. The candidate gene GbNTL9 was identified through map-based cloning and expression analysis. The function of NTL9 was determined through transgenic experiments and cytological observations. The regulatory mechanisms of NTL9 were explored using RNA-seq, RT-qPCR, yeast two-hybrid, bimolecular fluorescence complementation, and yeast one-hybrid.
resultsA major QTL for fiber strength, qFS-A11-1, was mapped to a 14.6-kb genomic region using segregating populations from E22 × BS41. GbNTL9, which encodes a NAC transcription factor, was identified as the candidate gene. Overexpression of both upland cotton genotype NTL9
conclusionOur findings demonstrate that GbNTL9 positively regulates fiber strength through altering the microfibril deposition pattern, and provide a new insight into the molecular mechanism underlying fiber strength.
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