Trajectories of Cotton Fiber Initiation: A Regulatory Perspective

Prakash, Pravin; Srivastava, Rakesh K.; Tiwari, Vinod K.; Kumar, Ashok; Pandey, S. K.; Sawant, Samir V

doi:10.20944/preprints202011.0060.v1

Cited by 7 publications

(4 citation statements)

References 109 publications

(204 reference statements)

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“…, initiation, elongation, secondary cell wall biosynthesis, and maturation. 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 ).…”

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 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: Introductionmentioning

confidence: 99%

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

et al. 2022

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“…Taken together, all these phytohormones positively regulating the commitment of fiber cells under the effect of different GhCYPs (Fig. 5A-5D) [47]. Contrastingly, GhCYP707 modulates the Abscisic acid concentration that negatively regulates the cotton fiber initiation at -3 to 3 DPA fiber developmental stages (Supplementary Dataset 7) [48,49].…”

Section: Discussionmentioning

confidence: 87%

Evolutionary and Functional Characterization of Cytochrome P450 in Cotton Reveal the Role of Subgenome Expression of GhCYP78A for Cotton Fiber Initiation

Verma¹,

Khatoon²,

Sawant³

et al. 2022

Preprint

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Cytochrome P450 (CYPs) is a functionally diversified third-largest gene family that exploded in the plant kingdom. Their role in different organ development has been illustrated by the intervention of phytohormone. Cotton is a model organism for cell differentiation and cell elongation. To decipher the participation of CYPs in different cotton fiber developmental stages, we identified and characterized 2460 CYPs in three diploids and two allotetraploid cottons. Furthermore, In-silico expression and cluster analysis of cotton CYPs was conducted to distinguish the fiber stage-specific clusters that have the determining role in different stages of fiber development. The subgenome expression of two conserved Gossypium hirsutum CYPs, namely, GhCYP78A197 and GhCYP78A198 contributed to fiber initiation at an early stage of fiber development, governed by the co-occurrence of TATA and MYB TFs binding sites. Coexpression network partners of these two GhCYP78A annotated as auxin, kinases, chromatin remodeler, epigenetic regulator and cyclin-related genes that possibly induce the endoreduplication and cell proliferation for fiber cell initiation to define the high yield and biomass.

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“…The MYB transcription factor GhCPC is homologous to Arabidopsis CPC and negatively regulates cotton fiber elongation. Transgenic evidence suggests that overexpression of GhCPC results in a delay in fiber initiation and a reduction in fiber length ( Prakash et al, 2020 ). A yeast two-hybrid analysis showed that GhCPC can interact with the bHLH-type protein GhMYC1, and GhMYC1 can also interact with GhTTG1 and GhTTG4 .…”

Section: Molecular Mechanisms Of Unicellular Trichome Developmentmentioning

confidence: 99%

“…The expression of VACUOLAR INVERTASE ( VIN ) is necessary for cotton fiber initiation, and RNAi-mediated inhibition of GhVIN1 leads to a significant decrease in VIN activity, thereby forming a fiber-free seed phenotype in a dose-dependent manner ( Wang et al, 2014 ). GhVIN1 -mediated hexose signaling acts upstream of GhMYB25-like , GhMYB25 , and GhMYB109 transcription factors ( Prakash et al, 2020 ).…”

Section: Molecular Mechanisms Of Unicellular Trichome Developmentmentioning

confidence: 99%

Molecular Mechanisms of Plant Trichome Development

Han

Yang

et al. 2022

Front. Plant Sci.

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Plant trichomes, protrusions formed from specialized aboveground epidermal cells, provide protection against various biotic and abiotic stresses. Trichomes can be unicellular, bicellular or multicellular, with multiple branches or no branches at all. Unicellular trichomes are generally not secretory, whereas multicellular trichomes include both secretory and non-secretory hairs. The secretory trichomes release secondary metabolites such as artemisinin, which is valuable as an antimalarial agent. Cotton trichomes, also known as cotton fibers, are an important natural product for the textile industry. In recent years, much progress has been made in unraveling the molecular mechanisms of trichome formation in Arabidopsis thaliana, Gossypium hirsutum, Oryza sativa, Cucumis sativus, Solanum lycopersicum, Nicotiana tabacum, and Artemisia annua. Here, we review current knowledge of the molecular mechanisms underlying fate determination and initiation, elongation, and maturation of unicellular, bicellular and multicellular trichomes in several representative plants. We emphasize the regulatory roles of plant hormones, transcription factors, the cell cycle and epigenetic modifications in different stages of trichome development. Finally, we identify the obstacles and key points for future research on plant trichome development, and speculated the development relationship between the salt glands of halophytes and the trichomes of non-halophytes, which provides a reference for future studying the development of plant epidermal cells.

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Trajectories of Cotton Fiber Initiation: A Regulatory Perspective

Cited by 7 publications

References 109 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

Evolutionary and Functional Characterization of Cytochrome P450 in Cotton Reveal the Role of Subgenome Expression of GhCYP78A for Cotton Fiber Initiation

Molecular Mechanisms of Plant Trichome Development

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