Looking into ‘hair tonics’ for cotton fiber initiation

Wang, Lu; Kartika, Dewi; Ruan, Yong‐Ling

doi:10.1111/nph.16898

Cited by 26 publications

(19 citation statements)

References 55 publications

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“…Motif enrichment analysis of 302 differentially expressed fiber-specific genes revealed a significant enrichment of cis -regulatory motifs belonging to bHLH and C2H2 zinc finger TFs ( Figure 2A ). The TFs that interact with these two motifs are required for different transcriptional regulations at fiber initiation and elongation stages ( Wang L. et al, 2021 ; Wang N. N. et al, 2021 ; Wu et al, 2021 ). However, in At subgenome (142) and Dt subgenome specific (160) DEGs, instead of bHLH, AP2/ERF TF showed significant motif enrichment over the random datasets ( Figures 2A,C ), which was previously reported to control the fiber length ( Mittal et al, 2015 ).…”

Section: Discussionmentioning

confidence: 99%

“…The fate of ovule epidermal cells is committed before and/or on the day of anthesis, which is coordinated by different regulation machinery ( Qin and Zhu, 2011 ; Zhang et al, 2017 ; Prakash et al, 2020 ; Tian and Zhang, 2021 ). Thus, we named this stage as a fiber commitment stage, which ultimately decided the total fiber yield ( Wang L. et al, 2021 ). Cotton fiber yield and its quality are essential agronomical traits, and thereby, significant efforts have been made to understand its biological mechanisms.…”

Section: Introductionmentioning

confidence: 99%

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Transcriptional Landscape of Cotton Fiber Development and Its Alliance With Fiber-Associated Traits

et al. 2022

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Cotton fiber development is still an intriguing question to understand fiber commitment and development. At different fiber developmental stages, many genes change their expression pattern and have a pivotal role in fiber quality and yield. Recently, numerous studies have been conducted for transcriptional regulation of fiber, and raw data were deposited to the public repository for comprehensive integrative analysis. Here, we remapped > 380 cotton RNAseq data with uniform mapping strategies that span ∼400 fold coverage to the genome. We identified stage-specific features related to fiber cell commitment, initiation, elongation, and Secondary Cell Wall (SCW) synthesis and their putative cis-regulatory elements for the specific regulation in fiber development. We also mined Exclusively Expressed Transcripts (EETs) that were positively selected during cotton fiber evolution and domestication. Furthermore, the expression of EETs was validated in 100 cotton genotypes through the nCounter assay and correlated with different fiber-related traits. Thus, our data mining study reveals several important features related to cotton fiber development and improvement, which were consolidated in the “CottonExpress-omics” database.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Transcriptional Landscape of Cotton Fiber Development and Its Alliance With Fiber-Associated Traits

et al. 2022

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“…Cotton fiber and Arabidopsis trichome initiation share some similarities but have a different mode of molecular regulation ( Tian and Zhang, 2021 ; Wang et al, 2021a ). Several key genes involved in Arabidopsis trichome initiation have been identified that form a transcriptional network involving three major groups of transcription factors: R2R3-type MYB-basic helix–loop–helix (bHLH)-WD40 repeat (WDR) protein ( Payne et al, 2000 ; Serna and Martin, 2006 ; Grebe, 2012 ; Pattanaik et al, 2014 ; Tian and Zhang, 2021 ).…”

Section: Introductionmentioning

confidence: 99%

Multi-Dimensional Molecular Regulation of Trichome Development in Arabidopsis and Cotton

et al. 2022

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Plant trichomes are specialized epidermal cells that are widely distributed on plant aerial tissues. The initiation and progression of trichomes are controlled in a coordinated sequence of multiple molecular events. During the past decade, major breakthroughs in the molecular understanding of trichome development were achieved through the characterization of various trichomes defective mutants and trichome-associated genes, which revealed a highly complex molecular regulatory network underlying plant trichome development. This review focuses on the recent millstone in plant trichomes research obtained using genetic and molecular studies, as well as ‘omics’ analyses in model plant Arabidopsis and fiber crop cotton. In particular, we discuss the latest understanding and insights into the underlying molecular mechanisms of trichomes formation at multiple dimensions, including at the chromatin, transcriptional, post-transcriptional, and post-translational levels. We summarize that the integration of multi-dimensional trichome-associated genes will enable us to systematically understand the molecular regulation network that landscapes the development of the plant trichomes. These advances will enable us to address the unresolved questions regarding the molecular crosstalk that coordinate concurrent and ordered the changes in cotton fiber initiation and progression, together with their possible implications for genetic improvement of cotton fiber.

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“…Cotton fibers are single-celled and unbranched trichomes that outgrow from the seed epidermal cells and successively undergo a highly polarized elongation similar to leaf trichomes [ 16 , 17 ]. Therefore, cell fate determination and elongation patterns unveiled from Arabidopsis trichomes may provide a useful framework involved in cotton fiber initiation and elongation.…”

Section: Introductionmentioning

confidence: 99%

Weighted Gene Co-Expression Network Analysis Reveals Hub Genes Contributing to Fuzz Development in Gossypium arboreum

Shang

Cheng

et al. 2021

Genes

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Fuzzless mutants are ideal materials to decipher the regulatory network and mechanism underlying fuzz initiation and formation. In this study, we utilized two Gossypium arboreum accessions differing in fuzz characteristics to explore expression pattern differences and discriminate genes involved in fuzz development using RNA sequencing. Gene ontology (GO) analysis was conducted and found that DEGs were mainly enriched in the regulation of transcription, metabolic processes and oxidation–reduction-related processes. Weighted gene co-expression network analysis discerned the MEmagenta module highly associated with a fuzz/fuzzless trait, which included a total of 50 hub genes differentially expressed between two materials. GaFZ, which negatively regulates trichome and fuzz formation, was found involved in MEmagenta cluster1. In addition, twenty-eight hub genes in MEmagenta cluster1 were significantly up-regulated and expressed in fuzzless mutant DPL972. It is noteworthy that Ga04G1219 and Ga04G1240, which, respectively, encode Fasciclin-like arabinogalactan protein 18(FLA18) and transport protein, showed remarkable differences of expression level and implied that they may be involved in protein glycosylation to regulate fuzz formation and development. This module and hub genes identified in this study will provide new insights on fiber and fuzz formation and be useful for the molecular design breeding of cotton genetic improvement.

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Looking into ‘hair tonics’ for cotton fiber initiation

Cited by 26 publications

References 55 publications

Transcriptional Landscape of Cotton Fiber Development and Its Alliance With Fiber-Associated Traits

Transcriptional Landscape of Cotton Fiber Development and Its Alliance With Fiber-Associated Traits

Multi-Dimensional Molecular Regulation of Trichome Development in Arabidopsis and Cotton

Weighted Gene Co-Expression Network Analysis Reveals Hub Genes Contributing to Fuzz Development in Gossypium arboreum

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