Identification and Bioinformatics Analysis of Coconut CESA Gene Family
The raw materials to process coconut coir and coconut coir fibers are mainly imported from abroad.And there is huge market potential,because the supply of raw materials is insufficient in China.Therefore,it is of great significance to cultivate new varieties of coconuts with high quality and deep processing.In this study,we used published coconut genome data and identified 10 coconut CESA gene family members.And we performed gene structure analysis,protein physicochemical property analysis,subcellular localization prediction,protein con-servation domain prediction,super-secondary structure prediction analysis,tertiary structure homology modeling,protein transmembrane helix prediction,phylogenetic tree construction and expression profile analysis of these 10 coconut CESA gene family members.Protein physicochemical property analysis and subcellular localization anal-ysis showed that coconut CESA member's proteins were acidic proteins mostly,and they were mainly located on the cell plasma membrane.Evolutionary analysis shows that the members of the coconut CESA gene family could be divided into 5 groups.The genes within the group had high gene homology and small differences between groups.All family members contained the N-terminal zinc finger domain and cellulose synthase domain.And these family members had similar gene structures.Clustering and expression profile analysis showed that CoCESA3,CoCESA4,CoCESA6,and CoCESA8 clustered together with the reported CESA genes related to primary cell wall synthesis in Arabidopsis and rice,and were found in mature leaves,young leaves,embryos,endosperm and callus.It has a high expression level in the coconut,which may participate in the synthesis of primary cell wall and play a role in the entire plant growth and development process.In a word,this study identified 10 coconut CESA gene family mem-bers and performed bioinformatics analysis on them.It provides a basis for further research on the functions of co-conut CESA gene family and provides candidate genes for molecular breeding of new varieties of high-quality deep-processed coconuts.
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