Application of Rhizobacteria, Paraburkholderia fungorum and Delftia sp. Confer Cadmium Tolerance in Rapeseed (Brassica campestris) through Modulating Antioxidant Defense and Glyoxalase Systems

被引:9
|
作者
Raihan, Md Rakib Hossain [1 ]
Rahman, Mira [1 ]
Mahmud, Nur Uddin [2 ]
Adak, Malay Kumar [3 ]
Islam, Tofazzal [2 ]
Fujita, Masayuki [4 ]
Hasanuzzaman, Mirza [1 ]
机构
[1] Sher E Bangla Agr Univ, Dept Agron, Dhaka 1207, Bangladesh
[2] Bangabandhu Sheikh Mujibur Rahman Agr Univ, Inst Biotechnol & Genet Engn IBGE, Gazipur 1706, Bangladesh
[3] Univ Kalyani, Dept Bot, Nadia 741235, W Bengal, India
[4] Kagawa Univ, Fac Agr, Lab Plant Stress Responses, Miki Cho, Takamatsu, Kagawa 7610795, Japan
来源
PLANTS-BASEL | 2022年 / 11卷 / 20期
关键词
abiotic stress; methylglyoxal; oilseed crop; plant-microbe interaction; ROS; soil heavy metals; BACILLUS-SUBTILIS; HYDROGEN-PEROXIDE; HEAVY-METAL; STRESS; ASCORBATE; RESPONSES; GROWTH; PLANTS; CHLOROPLASTS; GLUTATHIONE;
D O I
10.3390/plants11202738
中图分类号
Q94 [植物学];
学科分类号
071001 ;
摘要
We investigated the role of two different plant growth-promoting probiotic bacteria in conferring cadmium (Cd) tolerance in rapeseed (Brassica campestris cv. BARI Sarisha-14) through improving reactive oxygen species scavenging, antioxidant defense, and glyoxalase system. Soil, as well as seeds of rapeseed, were separately treated with probiotic bacteria, Paraburkholderia fungorum BRRh-4 and Delftia sp. BTL-M2. Fourteen-day-old seedlings were exposed to 0.25 and 0.5 mM CdCl2 for two weeks. Cadmium-treated plants resulted in a higher accumulation of hydrogen peroxide, increased lipid peroxidation, electrolyte leakage, chlorophyll damage, and impaired antioxidant defense and glyoxalase systems. Consequently, it reduced plant growth and biomass production, and yield parameters. However, probiotic bacteria-inoculated plants significantly ameliorated the Cd toxicity by enhancing the activities of antioxidant enzymes (ascorbate peroxidase, dehydroascorbate reductase, monodehydroascorbate reductase, glutathione reductase, glutathione peroxidase, and catalase) and glyoxalase enzymes (glyoxalase I and glyoxalase II) which led to the mitigation of oxidative damage indicated by reduced hydrogen peroxide, lipid peroxidation, and electrolyte leakage that ultimately improved growth, physiology, and yield of the bacterial inoculants rapeseed plants. When taken together, our results demonstrated the potential role of the plant probiotic bacteria, BRRh-4 and BTL-M2, in mitigating the Cd-induced damages in rapeseed plants.
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页数:19
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