Molecular Insights into Cotton Fiber Gene Regulation

A special issue of Plants (ISSN 2223-7747). This special issue belongs to the section "Plant Molecular Biology".

Deadline for manuscript submissions: 30 June 2024 | Viewed by 494

Special Issue Editors


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Guest Editor
1. Institute for Advanced Studies, Wuhan University, Wuhan 430072, China
2. College of Life Sciences, Wuhan University, Wuhan 430072, China
Interests: mechanism of cotton fiber cell elongation; functional mechanism of plant hormones; regulation mechanism of gene expression
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Guest Editor
Key Laboratory of Cotton Genetic Improvement, Ministry of Agriculture, Cotton Research Institute, Chinese Academy of Agricultural Sciences, Anyang 455004, China
Interests: cotton transformation; cotton breeding; genetic improvement; cotton resistance; cotton stress tolerance

Special Issue Information

Dear Colleagues,

Cotton is an irreplaceable economic crop domesticated by human beings for its extremely elongated fibers, with a central role in the world’s textile industry. Since the quality of cotton fiber cells directly determines its economic value, enhancing fiber quality is always the primary task in cotton breeding practices. In recent years, many fiber quality-related genes, QTLs and biochemical pathways have been identified and proposed. For example, several major QTLs were found to be associated with fiber length and quality improvement via cotton genome sequencing projects. Moreover, a lack of favorable allelic diversity in most cotton cultivars, which is recognized as the bottleneck for fiber quality enhancement, was overcome by introgression of exotic donors, i.e., from members of other Gossypium genera. In the future, scientists may incorporate more diploid genes or loci to improve the quality of Upland cotton fibers. This Special Issue of Plants will focus on and highlight the functional regulatory mechanisms that underlie fiber cell elongation, the evolution of genes involved in the specific linear cell growth mode, as well as control of cell wall biosynthesis and other related aspects.

Prof. Dr. Yuxian Zhu
Prof. Dr. Fuguang Li
Guest Editors

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Keywords

  • cotton fiber
  • plant hormone
  • elongation
  • cell wall growth
  • molecular regulation
  • QTLs
  • introgression

Published Papers (1 paper)

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Research

14 pages, 5157 KiB  
Article
GhFAD3-4 Promotes Fiber Cell Elongation and Cell Wall Thickness by Increasing PI and IP3 Accumulation in Cotton
by Huiqin Wang, Mengyuan Fan, Yongcui Shen, Hanxuan Zhao, Shuangshuang Weng, Zhen Chen and Guanghui Xiao
Plants 2024, 13(11), 1510; https://doi.org/10.3390/plants13111510 - 30 May 2024
Viewed by 277
Abstract
The omega-3 fatty acid desaturase enzyme gene FAD3 is responsible for converting linoleic acid to linolenic acid in plant fatty acid synthesis. Despite limited knowledge of its role in cotton growth, our study focused on GhFAD3-4, a gene within the FAD3 family, [...] Read more.
The omega-3 fatty acid desaturase enzyme gene FAD3 is responsible for converting linoleic acid to linolenic acid in plant fatty acid synthesis. Despite limited knowledge of its role in cotton growth, our study focused on GhFAD3-4, a gene within the FAD3 family, which was found to promote fiber elongation and cell wall thickness in cotton. GhFAD3-4 was predominantly expressed in elongating fibers, and its suppression led to shorter fibers with reduced cell wall thickness and phosphoinositide (PI) and inositol triphosphate (IP3) levels. Transcriptome analysis of GhFAD3-4 knock-out mutants revealed significant impacts on genes involved in the phosphoinositol signaling pathway. Experimental evidence demonstrated that GhFAD3-4 positively regulated the expression of the GhBoGH3B and GhPIS genes, influencing cotton fiber development through the inositol signaling pathway. The application of PI and IP6 externally increased fiber length in GhFAD3-4 knock-out plants, while inhibiting PI led to a reduced fiber length in GhFAD3-4 overexpressing plants. These findings suggest that GhFAD3-4 plays a crucial role in enhancing fiber development by promoting PI and IP3 biosynthesis, offering the potential for breeding cotton varieties with superior fiber quality. Full article
(This article belongs to the Special Issue Molecular Insights into Cotton Fiber Gene Regulation)
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