Table 2 The mechanisms of action of Plant Growth Promoting Rhizobacteria (PGPR) that alleviate abiotic stress
Stress | PGPR species | Plant growth-promoting mechanisms | Host plant | References |
|---|---|---|---|---|
Drought | Bacillus aquimaris | IAA and ACC deaminase | Helianthus tuberosus L | (Namwongsa et al. 2019) |
Drought | Bacillus sp. Enterobacter sp | IAA | Zea mays and Triticum aestivum | (Jochum et al. 2019) |
Drought | Bacillus megaterium | Polyamine secretion | Arabidopsis thaliana | (Zhou et al. 2016) |
Salt | Burkholderia sp. | IAA, ACC deaminase | Oryza sativa L | (Sarkar et al. 2018) |
Salt | Bacillus safensis | IAA, ACC deaminase | Brassica napus | (Li et al. 2017) |
Metal | Streptomyces acidiscables | Siderophore | Vigna unguiculata | (Dimkpa et al. 2009) |
Heat | Bacillus tequilensis | GAs, IAA | Glycine max | (Kang et al. 2019) |
Cold | Bacillus spp | ABA | Triticum aestivum | (Zubair et al. 2019) |
Flooding | Pseudomonas putida | ACC deaminase | Rumex palustris | (Ravanbakhsh et al. 2017) |