Characterization of the
| Autor: | Li, Song, Babu, Valliyodan, Silvas, Prince, Jinrong, Wan, Henry T, Nguyen |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
plant genome
Glycine max Acclimatization fungi food and beverages Glycosyltransferases plant hormone Plants Genetically Modified Floods Article flooding Gene Expression Regulation Plant Stress Physiological Multigene Family Soybeans transgenic soybean Genome Plant Phylogeny Plant Proteins XTH gene family root plasticity |
| Zdroj: | International Journal of Molecular Sciences |
| ISSN: | 1422-0067 |
| Popis: | Xyloglucan endotransglycosylases/hydrolases (XTHs) are a class of enzymes involved in the construction and remodeling of cellulose/xyloglucan crosslinks and play an important role in regulating cell wall extensibility. However, little is known about this class of enzymes in soybean. Here, 61 soybean XTH genes (GmXTHs) were identified and classified into three subgroups through comparative phylogenetic analysis. Genome duplication greatly contributed to the expansion of GmXTH genes in soybean. A conserved amino acid motif responsible for the catalytic activity was identified in all GmXTHs. Further expression analysis revealed that most GmXTHs exhibited a distinct organ-specific expression pattern, and the expression level of many GmXTH genes was significantly associated with ethylene and flooding stress. To illustrate a possible role of XTH genes in regulating stress responses, the Arabidopsis AtXTH31 gene was overexpressed in soybean. The generated transgenic plants exhibited improved tolerance to flooding stress, with a higher germination rate and longer roots/hypocotyls during the seedling stage and vegetative growth stages. In summary, our combined bioinformatics and gene expression pattern analyses suggest that GmXTH genes play a role in regulating soybean stress responses. The enhanced soybean flooding tolerance resulting from the expression of an Arabidopsis XTH also supports the role of XTH genes in regulating plant flooding stress responses. |
| Databáze: | OpenAIRE |
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