Endophytic bacterium Bacillus subtilis (BERA 71) improves salt tolerance in chickpea plants by regulating the plant defense mechanisms

Journal of plant interactions

article

Elsayed Fathi Abd_Allah¹  Abdulaziz A. Alqarawi¹  Abeer Hashem²  Ramalingam Radhakrishnan⁴  Asma A. Al-Huqail²  Fatma Olyan Naser Al-Otibi²  Jahangir Ahmad Malik¹  Raedah Ibrahim Alharbi²  Dilfuza Egamberdieva⁵ 

[1] Department of Plant Production, College of Food & Agricultural Sciences, King Saud University;Botany and Microbiology Department, College of Science, King Saud University;Mycology and Plant Disease Survey Department, Plant Pathology Research Institute;Department of Biotechnology, Yeungnam University;Leibniz Centre for Agricultural Landscape Research, Institute of Landscape Biogeochemistry;Faculty of Biology, National University of Uzbekistan

关键词: Bacillus subtilis (BERA 71);    lipid peroxidation;    proline;    antioxidants;    minerals;    chickpea;   

DOI  :  10.1080/17429145.2017.1414321

学科分类：纳米科学和纳米技术

来源: Taylor & Francis

【 摘 要 】

Plant growth-promoting endophytic bacteria can stimulate the growth, nutrient acquisition, symbiotic performance and stress tolerance of chickpea plants under saline soil conditions. The aim of this study was to investigate the stress-adaptive mechanisms of chickpea plants mediated by Bacillus subtilis (BERA 71) under saline conditions. Inoculation with BERA 71 enhanced plant biomass and the synthesis of photosynthetic pigments and reduced the levels of reactive oxygen species (ROS) and lipid peroxidation in plants under conditions of stress. Furthermore, the activities of ROSscavenging antioxidant enzymes (superoxide dismutase, peroxidase, catalase and glutathione reductase), the levels of non-enzymatic antioxidants (ascorbic acid and glutathione) and the total phenol content were increased in stressed plants during bacterial association. The bacteria decreased sodium accumulation and enhanced the nitrogen, potassium, calcium and magnesium content in the plants. The suppression of ROS generation and of lipid peroxidation and the accumulation of proline in BERA-71-inoculated plants enhanced the membrane stability under salinity stress and non-stress conditions.

【 授权许可】

CC BY|CC BY-NC