生物
渗透压
转基因水稻
非生物胁迫
耐旱性
转基因
超氧化物歧化酶
转基因作物
脯氨酸
非生物成分
细胞生物学
水稻
植物
基因
生物化学
酶
古生物学
氨基酸
作者
Yanchun Cui,Mingjuan Li,Xuming Yin,Shufeng Song,Guoyun Xu,Manling Wang,Chunyong Li,Can Peng,X. Y. Xia
出处
期刊:Plant Science
[Elsevier]
日期:2018-05-01
卷期号:270: 85-96
被引量:23
标识
DOI:10.1016/j.plantsci.2018.02.015
摘要
Small signaling peptides play important roles in plant development and responses to abiotic and biotic stresses. We have identified a novel small peptide gene in rice, OsDSSR1, which is expressed mainly in the root, stem, node, leaf, and panicle. OsDSSR1 expression is also induced by drought, salinity, ABA, and H2O2 treatment. OsDSSR1 is localized in the nucleus and cytoplasm. Transgenic plants overexpressing OsDSSR1 exhibited enhanced drought stress tolerance and decreased ABA sensitivity as compared to the wild type. Overexpression of OsDSSR1 promoted the accumulation of compatible osmolytes, such as free proline and soluble sugars. OsDSSR1-overexpressing plants displayed enhanced OsSodCc2 and OscAPX expression and superoxide dismutase and ascorbate peroxidase activities under drought stress. RNA-sequencing data revealed that the expression of 72 abiotic stress-responsive genes was significantly altered in homozygous transgenic plants. These stress-responsive candidate genes will aid in expanding our understanding of the mechanisms by which small peptides mediate tolerance in crop species.
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