2020
DOI: 10.21203/rs.3.rs-119017/v1
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Characterization of Cotton ARF Factors and the Role of GhARF2b in Fiber Development

Abstract: Background: Cotton fiber is a model system for studying plant cell development. At present, our understanding of cotton fiber development and the regulatory network is still primitive. Results: Here, we identify auxin response factor (ARF) genes in three cotton species: the tetraploid upland cotton G. hirsutum, which has 73 ARF genes, and its putative extent parental diploids G. arboreum and G. raimondii, which have 36 and 35 ARFs, respectively. Ka and Ks analyses revealed that in G. hirsutum ARF genes have un… Show more

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“…Other work has demonstrated that auxin regulates GA biosynthesis by modifying the transcription of GhGA3OX4D and GhGA20OX1D‐2 (via GhARF18 ), ultimately promoting fiber elongation (Zhu et al, 2022a). Additionally, GhARF2b directly interacts with GhHOX3 to repress the transcriptional activity of GhHOX3 on target genes involved in fiber development (Figure 2) (Zhang et al, 2021c).…”
Section: Cotton Functional Genomics: a Magic Weapon For Cotton Breedingmentioning
confidence: 99%
“…Other work has demonstrated that auxin regulates GA biosynthesis by modifying the transcription of GhGA3OX4D and GhGA20OX1D‐2 (via GhARF18 ), ultimately promoting fiber elongation (Zhu et al, 2022a). Additionally, GhARF2b directly interacts with GhHOX3 to repress the transcriptional activity of GhHOX3 on target genes involved in fiber development (Figure 2) (Zhang et al, 2021c).…”
Section: Cotton Functional Genomics: a Magic Weapon For Cotton Breedingmentioning
confidence: 99%