GhHB14_D10 and GhREV_D5, two HD-ZIP III transcription factors, play a regulatory role in cotton fiber secondary cell wall biosynthesis

Key message GhHB14_D10 and GhREV_D5 regulated secondary cell wall formation and played an important role in fiber development. Cotton serves as an important source of natural fiber, and the biosynthesis of the secondary cell wall plays a pivotal role in determining cotton fiber quality. Nevertheless...

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Vydané v:	Plant cell reports Ročník 43; číslo 3; s. 76
Hlavní autori:	Li, Shuaijie, Yu, Mengli, Qanmber, Ghulam, Feng, Mengru, Hussain, Ghulam, Wang, Yichen, Yang, Zuoren, Zhang, Jie
Médium:	Journal Article
Jazyk:	English
Vydavateľské údaje:	Berlin/Heidelberg Springer Berlin Heidelberg 01.03.2024 Springer Nature B.V
Predmet:	Arabidopsis Arabidopsis - genetics Biomedical and Life Sciences Biosynthesis Biotechnology Cell Biology Cell differentiation Cell Wall Cell walls Cellulose Cotton Cotton Fiber Cotton fibers fiber quality Fibers Gene expression Gene regulation Genes genetic improvement Gossypium - genetics Life Sciences lint cotton Original Article Plant Biochemistry Plant Sciences Roles transcription (genetics) Transcription activation Transcription factors Transcription Factors - genetics transcriptional activation Wall deposition Xylem fiber Cellulose HD-ZIP III Cotton Silencing Secondary cell wall Ectopic overexpression Cotton (Gossypium hirsutum) fiber
ISSN:	0721-7714, 1432-203X, 1432-203X
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Shrnutí:	Key message GhHB14_D10 and GhREV_D5 regulated secondary cell wall formation and played an important role in fiber development. Cotton serves as an important source of natural fiber, and the biosynthesis of the secondary cell wall plays a pivotal role in determining cotton fiber quality. Nevertheless, the intricacies of this mechanism in cotton fiber remain insufficiently elucidated. This study investigates the functional roles of GhHB14_D10 and GhREV_D5 , two HD-ZIP III transcription factors, in secondary cell wall biosynthesis in cotton fibers. Both GhHB14_D10 and GhREV_D5 were found to be localized in the nucleus with transcriptional activation activity. Ectopic overexpression of GhHB14_D10 and GhREV_D5 in Arabidopsis resulted in changed xylem differentiation, secondary cell wall deposition, and expression of genes related to the secondary cell wall. Silencing of GhHB14_D10 and GhREV_D5 in cotton led to enhanced fiber length, reduced cell wall thickness, cellulose contents and expression of secondary cell wall-related genes. Moreover, GhHB14_D10’s direct interaction with GhREV_D5, and transcriptional regulation of cellulose biosynthesis genes GhCesA4-4 and GhCesA7-2 revealed their collaborative roles in secondary cell wall during cotton fiber development. Overall, these results shed light on the roles of GhHB14_D10 and GhREV_D5 in secondary cell wall biosynthesis, offering a strategy for the genetic improvement of cotton fiber quality.
Bibliografia:	ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 14 content type line 23
ISSN:	0721-7714 1432-203X 1432-203X
DOI:	10.1007/s00299-024-03147-5