Overexpression of forage millet (Setaria italica) SiER genes enhances drought resistance of Arabidopsis thaliana

文献类型： 外文期刊

第一作者： Dai, Hanjing

作者： Dai, Hanjing;Huang, Xiaoyi;Wang, Yingrun;Zhu, Shoujing;Li, Jieqin;Zheng, Jiacheng;Li, Jieqin;Zheng, Jiacheng;Xu, Zhaoshi;Zheng, Jiacheng

作者机构：

关键词： Arabidopsis thaliana L.; biomass production; drought resistance; expression patterns; forage millet; genes structure; PEG6000; SiER genes

期刊名称：FUNCTIONAL PLANT BIOLOGY （ 影响因子：2.6； 五年影响因子：2.9 ）

ISSN： 1445-4408

年卷期： 2024 年 51 卷 9 期

页码：

收录情况： SCI

摘要： ERECTA (ER) is a type of receptor-like kinase that contributes a crucial mission in various aspects of plant development, physiological metabolism, and abiotic stresses responses. This study aimed to explore the functional characteristics of the SiER family genes in millet (Setaria italica L.), focusing on the growth phenotype and drought resistance of Arabidopsis overexpressed SiER4_X1 and SiER1_X4 genes (SiERs). The results revealed that overexpression of SiER4_X1 and SiER1_X4 genes in Arabidopsis significantly enhanced the leaf number, expanded leaf length and width, further promoted the silique number, length and diameter, and plant height and main stem thickness, ultimately leading to a substantial increase in individual plant biomass. Compared to the wild-type (WT), through simulated drought stress, the expression level of SiER genes was notably upregulated, transgenic Arabidopsis seeds exhibited stronger germination rates and root development; after experiencing drought conditions, the activities of antioxidant enzymes (superoxide dismutase and peroxidase) increased, while the levels of malondialdehyde and relative electrical conductivity decreased. These results indicate that overexpression of SiERs significantly enhanced both biomass production and drought resistance in Arabidopsis. The SiER4_X1 and SiER1_X4 genes emerge as promising candidate genes for improving biomass production and drought resistance in forage plants.

分类号：

  • 相关文献
作者其他论文 更多>>

微信小程序