GhLPF1 Associated Network Is Involved with Cotton Lint Percentage Regulation Revealed by the Integrative Analysis of Spatial Transcriptome
Source abstract
Abstract
Abstract Cotton fibers, derived from the epidermis of the ovule, provide a sustainable natural fiber source for the textile industry. Traits related to fiber yield are predominantly determined by molecular regulations in the epidermis of the outer integument (OI) region of the cotton ovule. Here, we identify an R2R3 MYB transcription factor coding gene GhLPF1 within the QTL‐LP‐ChrA06 locus for lint percentage (LP, percentage of lint to seed cotton) through constructing the 1‐Day Post Anthesis Cotton Ovule Spatial Transcriptome Atlas. GhLPF1 is subjected as a downstream target of miR828 during fiber development. The direct downstream genes (DDGs) of GhLPF1 are biased to increased expression in GhLPF1‐CR, and are preferentially expressed in OI, so that GhLPF1 is primarily a transcriptional repressor to its DDGs. Population‐wide transcriptome analysis confirms that expression variation of GhLPF1‐DDGs is significantly biased to negative correlation with LP, among which a type I homeobox protein‐coding gene GhHB6 is further validated to be the directly downstream gene of GhLPF1. Given these data, it is demonstrated that GhLPF1 mediates a regulation network in LP as a transcriptional repressor, which makes it a valuable functional marker for fiber‐trait improvement application from QTL‐LP‐ChrA06.
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Research context
OpenAlex topics: Research in Cotton Cultivation
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Zhejiang Provincial Key Laboratory of Crop Genetic Resources Institute of Crop Science Plant Precision Breeding Academy College of Agriculture and Biotechnology Zhejiang University Hangzhou 300058 China
Yazhou Bay Science and Technology City Hainan Institute of Zhejiang University Building 11, Yongyou Industrial Park, Yazhou District Sanya Hainan 572025 China
National Key Laboratory of Crop Genetics & Germplasm Enhancement and Utilization Ministry of Agriculture Nanjing Agricultural University Nanjing 210095 China
Key Laboratory of Plant Nutrition and Fertilization in Low‐Middle Reaches of the Yangtze River Ministry of Agriculture Nanjing Agricultural University Nanjing 210095 China
School of Life Sciences Centre for Cell & Developmental Biology and State Key Laboratory of Agrobiotechnology The Chinese University of Hong Kong Shatin Hong Kong 999077 China
Institute of Leisure Agriculture Jiangsu Academy of Agricultural Sciences Nanjing 210014 China
Seed Production and Quality Control Research Center Hainan Seed Industry Laboratory Sanya Hainan China
Funding
National Key Research and Development Program of China · National Natural Science Foundation of China
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