biostudies-literatureUnknown21(1)Chen B<h4>Background</h4>Cotton is an important cash crop. The fiber length has always been a hot spot, but multi-factor control of fiber quality makes it complex to understand its genetic basis. Previous reports suggested that OsGASR9 promotes germination, width, and thickness by GAs in rice, while the overexpression of AtGASA10 leads to reduced silique length, which is likely to reduce cell wall expansion. Therefore, this study aimed to explore the function of GhGASA10 in cotton fibers development.<h4>Results</h4>To explore the molecular mechanisms underlying fiber elongation regulation concerning GhGASA10-1, we revealed an evolutionary basis, gene structure, and expression. Our results emphasized the conservative nature of GASA family with its origin in lower fern plants S. moellendorffii. GhBMC plant biology448https://www.ebi.ac.uk/biostudies/studies/S-EPMC8493757biostudies-literatureGhGASA10-1 promotes the cell elongation in fiber development through the phytohormones IAA-induced.PMC8493757Li HPan ZQin NShang JDu XNazir MFChen BSun YTian ZHe SFu GSong SMiao YPei XWang XfalseGhGASA10-1 promotes the cell elongation in fiber development through the phytohormones IAA-induced.<h4>Background</h4>Cotton is an important cash crop. The fiber length has always been a hot spot, but multi-factor control of fiber quality makes it complex to understand its genetic basis. Previous reports suggested that OsGASR9 promotes germination, width, and thickness by GAs in rice, while the overexpression of AtGASA10 leads to reduced silique length, which is likely to reduce cell wall expansion. Therefore, this study aimed to explore the function of GhGASA10 in cotton fibers development.<h4>Results</h4>To explore the molecular mechanisms underlying fiber elongation regulation concerning GhGASA10-1, we revealed an evolutionary basis, gene structure, and expression. Our results emphasized the conservative nature of GASA family with its origin in lower fern plants S. moellendorffii. Gh2021-01-01T00:00:00Z2021 Oct2026-05-08T07:29:16.6Z2022-02-11T12:02:04.227ZS-EPMC84937573461546710.1186/s12870-021-03230-z