Bacillus megaterium strain A12 ameliorates salinity stress in tomato plants through multiple mechanisms
文献类型： 外文期刊
作者： Akram, Waheed 1 ; Aslam, Hina 3 ; Ahmad, Sajid Rashid 3 ; Anjum, Tehmina 4 ; Yasin, Nasim Ahmad 4 ; Khan, Waheed Ul 1 ;
作者机构： 1.Guangdong Acad Agr Sci, Guangdong Key Lab New Technol Res Vegetables, Guangzhou, Guangdong, Peoples R China
2.Guangdong Acad Agr Sci, Vegetable Res Inst, Guangzhou 510640, Guangdong, Peoples R China
3.Univ Punjab, Coll Earth & Environm Sci, Lahore, Pakistan
4.Univ Punjab, Inst Agr Sci, Lahore, Pakistan
关键词： Bacillus megaterium; tomato; salinity tolerance; photosynthesis; redox homeostasis
期刊名称：JOURNAL OF PLANT INTERACTIONS （ 影响因子：4.208； 五年影响因子：4.344 ）
ISSN： 1742-9145
年卷期： 2019 年 14 卷 1 期
页码：
收录情况： SCI
摘要： Plants must cope with the stress conditions to survive. Plant growth promoting rhizobacteria can improve plant growth either directly or indirectly under stress conditions. However, the possible mechanisms remain unclear. Here we report that Bacillus megaterium strain A12 (BMA12) maintains hormonal and redox homeostasis and restores the photosynthetic efficacy of tomato plants through multiple mechanisms to survive under salinity stress conditions. Tomato plants were co-cultivated with BMA12 under saline conditions. The application of BMA12 significantly increased plant growth and photosynthetic capacity. BMA12 decreased production of ROS and ethylene but increased expression levels of selected genes responsible for repairing of damaged photosynthetic apparatus and maintenance of redox homeostasis. Furthermore, BMA12 significantly altered metabolic profile to restore perturbations of tomato plant physiology impaired with salinity stress. This study proves that BMA12 can be used in the conventional agriculture system in the salinity effected fields.
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