The PAP Gene Family in Cotton: Impact of Genome-Wide Identification on Fiber Secondary Wall Synthesis
Cong Sun, Weijie Li, Ruiqiang Qi, Yangming Liu, Xiaoyu Wang, Juwu Gong, Wankui Gong, Jingtao Pan, Yang Li, Yuzhen Shi, Haoliang Yan, Haihong Shang, Youlu Yuan
TL;DR
This study identifies PAP genes in cotton and links them to fiber quality, offering insights for improving cotton fiber traits.
Contribution
The study provides a genome-wide analysis of PAP genes in cotton and links specific PAP genes to fiber secondary wall synthesis.
Findings
193 PAP genes were identified across four cotton species with conserved functional domains.
GhPAP2.2, GhPAP2.6, GhPAP2.8, and GhPAP2.9 showed higher expression in fibers of a cotton variety with thicker fibers.
PAP2 genes in cotton are closely related to a known cell wall synthesis gene, NtPAP12.
Abstract
Cotton is a crucial cash crop widely valued for its fiber. It is an important source of natural fiber and has diverse applications. Improving fiber quality is of significant economic and agricultural importance. Purple acid phosphatases (PAPs) are multifunctional enzymes critical for plant cell wall biosynthesis, root architecture modulation, low-phosphorus stress adaptation, and salt/ROS stress tolerance. In this study, a comprehensive genome-wide analysis of the PAP gene family was performed for four cotton species (G. hirsutum, G. barbadense, G. raimondii, and G. arboreum) to explore its potential role in improving fiber quality. A total of 193 PAP genes were identified in these species, revealing several conserved domains that contribute to their functional diversity. Phylogenetic analysis showed that the cotton PAP2 genes exhibited high homology with NtPAP12, a cell wall…
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Taxonomy
TopicsResearch in Cotton Cultivation · Plant nutrient uptake and metabolism · Plant Molecular Biology Research