期刊
PLANTS-BASEL
卷 12, 期 5, 页码 -出版社
MDPI
DOI: 10.3390/plants12051198
关键词
Gossypium; drought stress; YTH domain-containing RNA-binding protein; gene family
YTH domain-containing proteins, involved in post-transcriptional regulation, play multiple roles in controlling the growth, development, and response to stress in plants. This study identified and analyzed YTH genes in four cotton species. Phylogenetic analysis categorized these genes into three subgroups, and various aspects of their characteristics were investigated. Expression patterns and the functional verification of GhYTH8 in drought tolerance provided important insights into the YTH gene family in cotton.
YTH domain-containing proteins are one kind of RNA-binding protein involved in post-transcriptional regulation and play multiple roles in regulating the growth, development, and abiotic stress responses of plants. However, the YTH domain-containing RNA-binding protein family has not been previously studied in cotton. In this study, a total of 10, 11, 22, and 21 YTH genes were identified in Gossypium arboreum, Gossypium raimondii, Gossypium barbadense, and Gossypium hirsutum, respectively. These Gossypium YTH genes were categorized into three subgroups by phylogenetic analysis. The chromosomal distribution, synteny analysis, structures of Gossypium YTH genes, and the motifs of YTH proteins were analyzed. Furthermore, the cis-element of GhYTH genes promoter, miRNA targets of GhYTH genes, and subcellular localization of GhYTH8 and GhYTH16 were characterized. Expression patterns of GhYTH genes in different tissues, organs, and in response to different stresses were also analyzed. Moreover, functional verifications revealed that silencing GhYTH8 attenuated the drought tolerance in the upland cotton TM-1 line. These findings provide useful clues for the functional and evolutionary analysis of YTH genes in cotton.
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