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Identification and Expression Analysis of Xyloglucan Endotransglucosylase/hydrolase (XTH) Family in Grapevine ( L.)

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Journal PeerJ
Date 2022 Jun 20
PMID 35722264
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Abstract

Xyloglucan endotransglucosylases/hydrolases (XTH) are key enzymes in cell wall reformulation. They have the dual functions of catalyzing xyloglucan endotransglucosylase (XET) and xyloglucan endonuclease (XEH) activity and play a crucial role in the responses against abiotic stresses, such as drought, salinity, and freezing. However, a comprehensive analysis of the family and its functions in grapevine ( L.) has not yet been completed. In this study, 34 s were identified in the whole grapevine genome and then named according to their distribution on chromosomes. Based on a phylogenetic analysis including , the were classified into three groups. -element analysis indicated that these family members are related to most abiotic stresses. We further selected 14 from different groups and then examined their transcription levels under drought and salt stress. The results indicated that the transcription levels of selected in the leaves and roots presented the largest changes, suggesting that are likely to take part in the responses to drought and salt stress in grapevines. These results provide useful evidence for the further investigation of function in response to abiotic stresses in grapevine.

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