Seed biostimulant Bacillus sp. MGW9 improves the salt tolerance of maize during seed germination
文献类型： 外文期刊
作者： Li, Heqin 1 ; Yue, Haiwang 2 ; Li, Li 3 ; Liu, Yu 1 ; Zhang, Haiyan 1 ; Wang, Jianhua 3 ; Jiang, Xuwen 1 ;
作者机构： 1.Qingdao Agr Univ, Dryland Technol Key Lab Shandong Prov, Qingdao 266109, Peoples R China
2.Hebei Acad Agr & Forestry Sci, Dryland Farming Inst, Hengshui 053000, Peoples R China
3.China Agr Univ, Seed Sci & Technol Res Ctr, Beijing 100193, Peoples R China
关键词： Salt stress; Seed biostimulant; Seed germination; Zea mays; Bacillus sp
期刊名称：AMB EXPRESS （ 影响因子：3.298； 五年影响因子：3.427 ）
ISSN： 2191-0855
年卷期： 2021 年 11 卷 1 期
页码：
收录情况： SCI
摘要： Crop performance is seriously affected by high salt concentrations in soils. To develop improved seed pre-sowing treatment technologies, it is crucial to improve the salt tolerance of seed germination. Here, we isolated and identified the strain Bacillus sp. MGW9 and developed the seed biostimulant MGW9. The effects of seed biopriming with the seed biostimulant MGW9 in maize (Zea mays L.) under saline conditions were studied. The results show that the strain Bacillus sp. MGW9 has characteristics such as salt tolerance, nitrogen fixation, phosphorus dissolution, and indole-3-acetic acid production. Seed biopriming with the seed biostimulant MGW9 enhanced the performance of maize during seed germination under salinity stress, improving the germination energy, germination percentage, shoot/seedling length, primary root length, shoot/seedling fresh weight, shoot/seedling dry weight, root fresh weight and root dry weight. Seed biostimulant MGW9 biopriming also alleviated the salinity damage to maize by improving the relative water content, chlorophyll content, proline content, soluble sugar content, root activity, and activities of superoxide dismutase, catalase, peroxidase and ascorbate peroxidase, while decreasing the malondialdehyde content. In particular, the field seedling emergence of maize seeds in saline-alkali soil can be improved by biopriming with the seed biostimulant MGW9. Therefore, maize seed biopriming with the seed biostimulant MGW9 could be an effective approach to overcoming the inhibitory effects of salinity stress and promoting seed germination and seedling growth.
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