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Transcriptional regulation of phospholipid transport in cotton fiber elongation by GhMYB30D04-GhHD1 interaction complex.
Song, Qingwei; Du, Chuanhui; Xu, Yiyang; Wang, Jin; Lin, Min; Zuo, Kaijing.
Afiliación
  • Song Q; Single Cell Research Center, College of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai, 200240, China.
  • Du C; Single Cell Research Center, College of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai, 200240, China.
  • Xu Y; Single Cell Research Center, College of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai, 200240, China.
  • Wang J; Biotechnology Research Institute, Chinese Academy of Agricultural Sciences, Beijing, 100081, China.
  • Lin M; College of Agriculture, Henan University, Kaifeng, 450046, China.
  • Zuo K; Single Cell Research Center, College of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai, 200240, China.
J Integr Plant Biol ; 2024 Sep 17.
Article en En | MEDLINE | ID: mdl-39287338
ABSTRACT
Cotton fiber length is basically determined by well-coordinated gene expression and phosphatidylinositol phosphates (PIPs) accumulation during fiber elongation but the regulatory mechanism governing PIPs transport remains unknown. Here, we report a MYB transcription factor GhMYB30D04 in Gossypium hirsutum that promotes fiber elongation through modulating the expression of PIP transporter gene GhLTPG1. Knockout of GhMYB30D04 gene in cotton (KO) results in a reduction of GhLTPG1 transcripts with lower accumulation of PIPs, leading to shorter fibers and lower fiber yield. Conversely, GhMYB30D04 overexpression (GhMYB30D04-OE) causes richer PIPs and longer cotton fibers, mimicking the effects of exogenously applying PIPs on the ovules of GhMYB30D04-KO and wild type. Furthermore, GhMYB30D04 interacts with GhHD1, the crucial transcription factor of fiber initiation, to form an activation complex stabilized by PIPs, both of which upregulate GhLTPG1 expression. Comparative omics-analysis revealed that higher and extended expressions of LTPG1 in fiber elongation mainly correlate with the variations of the GhMYB30D04 gene between two cotton allotetraploids, contributing to longer fiber in G. babardense. Our work clarifies a mechanism by which GhHD1-GhMYB30D04 form a regulatory module of fiber elongation to tightly control PIP accumulation. Our work still has an implication that GhMYB30D04-GhHD1 associates with development transition from fiber initiation to elongation.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: J Integr Plant Biol Año: 2024 Tipo del documento: Article País de afiliación: China Pais de publicación:
Texto completo
Añadir a Mi BVS
Imprimir
XML
PubMed Links
Buscar en Google

Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: J Integr Plant Biol Año: 2024 Tipo del documento: Article País de afiliación: China Pais de publicación: