A cotton NAC domain transcription factor, GhFSN5, negatively regulates secondary cell wall biosynthesis and anther development in transgenic Arabidopsis

Copyright © 2019 Elsevier Masson SAS. All rights reserved.

Détails bibliographiques
Publié dans:Plant physiology and biochemistry : PPB. - 1991. - 146(2020) vom: 01. Jan., Seite 303-314
Auteur principal: Sun, Qianwen (Auteur)
Autres auteurs: Huang, Junfeng, Guo, Yifan, Yang, Mingming, Guo, Yanjun, Li, Juan, Zhang, Jie, Xu, Wenliang
Format: Article en ligne
Langue:English
Publié: 2020
Accès à la collection:Plant physiology and biochemistry : PPB
Sujets:Journal Article Cotton GhFSN5 NAC protein Negative regulation Secondary cell wall Transgenic Arabidopsis Arabidopsis Proteins Transcription Factors
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520 |a NAC domain transcription factors (TFs) are plant-specific transcriptional regulators, some of which play crucial roles in secondary cell wall (SCW) biosynthesis in plants. Cotton is one of the most important natural fiber producing crops, whose mature fiber SCW contains more than 90% cellulose with very small amounts of xylan and lignin, but little is known about the molecular mechanism underlying fiber SCW formation. We previously identified seven fiber preferentially expressed NAC members, GhFSN1-7. One, GhFSN1, was demonstrated to positively regulate fiber SCW thickening, but the functions of other GhFSN members remain unknown. In this study, roles of GhFSN5 were dissected. qRT-PCR analysis showed that GhFSN5 was predominantly transcribed during the fiber SCW thickening stage. In addition, a large number of fiber SCW biosynthetic genes and SCW-related TFs were co-expressed with GhFSN5. Heterologous expression of GhFSN5 in Arabidopsis resulted in plants with smaller siliques and severe sterility. Anther dehiscence in transgenic lines was not substantially affected, but most pollen was collapsed and nonviable. Furthermore, cellulose and lignin contents in inflorescence stems as well as roots were reduced in transgenic lines, compared with the wild type. Moreover, a set of SCW biosynthetic genes for cellulose, xylan and lignin and several transcription factors involved in regulation of SCW formation were down-regulated in transgenic plants. Our findings indicate that GhFSN5 acts as a negative regulator of SCW formation and anther development and expands our understanding of transcriptional regulation of SCW biosynthesis 
650 4 |a Journal Article 
650 4 |a Cotton 
650 4 |a GhFSN5 
650 4 |a NAC protein 
650 4 |a Negative regulation 
650 4 |a Secondary cell wall 
650 4 |a Transgenic Arabidopsis 
650 7 |a Arabidopsis Proteins  |2 NLM 
650 7 |a Transcription Factors  |2 NLM 
700 1 |a Huang, Junfeng  |e verfasserin  |4 aut 
700 1 |a Guo, Yifan  |e verfasserin  |4 aut 
700 1 |a Yang, Mingming  |e verfasserin  |4 aut 
700 1 |a Guo, Yanjun  |e verfasserin  |4 aut 
700 1 |a Li, Juan  |e verfasserin  |4 aut 
700 1 |a Zhang, Jie  |e verfasserin  |4 aut 
700 1 |a Xu, Wenliang  |e verfasserin  |4 aut 
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