Rice Glycosyltransferase Gene UGT85E1 Is Involved in Drought Stress Tolerance Through Enhancing Abscisic Acid Response
Drought is one of the most important environmental constraints affecting plant growth and development and ultimately leads to yield loss. Uridine diphosphate (UDP)-dependent glycosyltransferases (UGTs) are believed to play key roles in coping with environmental stresses. In rice, it is estimated tha...
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Veröffentlicht in: | Frontiers in plant science 2021-12, Vol.12, p.790195-790195 |
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Zusammenfassung: | Drought is one of the most important environmental constraints affecting plant growth and development and ultimately leads to yield loss. Uridine diphosphate (UDP)-dependent glycosyltransferases (UGTs) are believed to play key roles in coping with environmental stresses. In rice, it is estimated that there are more than 200
genes. However, most of them have not been identified as their physiological significance. In this study, we reported the characterization of a putative glycosyltransferase gene
in rice.
gene is significantly upregulated by drought stress and abscisic acid (ABA) treatment. The overexpression of
led to an enhanced tolerance in transgenic rice plants to drought stress, while the
mutants of rice showed a more sensitive phenotype to drought stress. Further studies indicated that
overexpression induced ABA accumulation, stomatal closure, enhanced reactive oxygen species (ROS) scavenging capacity, increased proline and sugar contents, and upregulated expression of stress-related genes under drought stress conditions. Moreover, when
was ectopically overexpressed in Arabidopsis, the transgenic plants showed increased tolerance to drought as well as in rice. Our findings suggest that
plays an important role in mediating plant response to drought and oxidative stresses. This work may provide a promising candidate gene for cultivating drought-tolerant crops both in dicots and monocots. |
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ISSN: | 1664-462X 1664-462X |
DOI: | 10.3389/fpls.2021.790195 |