TABLE 1.

Plant Growth Promoting Microorganisms isolated from extreme environment to improve crop production.

Source	Strains	Application	Reference
Chilean hydrothermal	Bacillus sp. Geobacillus sp.	Phytases production	Jorquera et al., 2018
Arid soil of Saudi Arabia	Pseudomonas stutzeri Bacillus sp. Bacillus subtilis Enterobacter sp. Enterobacter cloacae Pseudomonas putida Bacillus subtilis subsp. inaquosorum Enterobacter sp.	Pathogen inhibition	El-Sayed et al., 2014
Qinghai-Tibetan plateau	Bacillus sp. Bacillus velezensis	Improves plant growth under cold stress	Zubair et al., 2019
Salty soil, Utah	Halomonas sp. Bacillus sp.	Improves plant growth under saline stress	Kearl et al., 2019
Extreme saline-alkali soil of Qinghai Province	Bacillus amyloliquefaciens	Pathogen inhibition Nitrogen fixation and IAA production	Wu et al., 2019
Antarctic plants	Symbiont consortium of Arthrobacter sp., Planoccocus sp., Penicillium chrysogenum and P. brevicompactum	Improves plant growth	Acuña-Rodríguez et al., 2019
Semiarid regions in the northeast of China	Pseudomonas fluorescens Enterobacter hormaechei Pseudomonas migulae	Seeds germination and seedling growth	Niu et al., 2018
Rhizosphere of Hordeum maritimum growing in saline soil	Bacillus mojavensis Bacillus pumilus Pseudomonas fluorescens	Improves plant growth	Mahmoud et al., 2017
Volcano soils	Ochrobactrum sp.	Improves plant growth	Mishra et al., 2017
Hypersaline soils in Tunisia	Halomonas sp.	Improves plant growth	Mapelli et al., 2013
Cold Desert of north western Indian Himalayas	Bacillus licheniformis Bacillus muralis Desemzia incerta Paenibacillus tylopili Sporosarcina globispora	Improves plant growth	Yadav et al., 2016
Rhizosphere of halophytes (Halimione portulacoides and Salicornia ramosissima)	Vibrio spartinae Marinobacter sediminum Vibrio parahaemolyticus Vibrio neocaledonicus Thalassospira australica Pseudarthrobacter oxydans	Improve seed germination	Mesa-Marín et al., 2019
Salt-accumulating halophyte Salicornia sp.	Staphylococcus sp.	Improves plant growth	Komaresofla et al., 2019
Hypersaline environment, Sambhar lake, India	Firmicutes Proteobacteria Actinobacteria	Phosphate solubilization and production of siderophore, ammonia, hydrogen cyanide, ACC-deaminase and indolic compounds	Sahay et al., 2012
Saline desert of Kutch, India	Bacillus licheniformis	Improves plant growth	Goswami et al., 2014
Antarctic Soil	Pseudomonas sp.	Phosphatase production	Berríos et al., 2012
Roots of Antarctic plants	Tapesia sp. Mollisia sp. Incertae sedis Oculimacula yallundae	Increase availability of nitrogen	Upson et al., 2009
Fungi from Antarctic plants	Penicillium chrysogenum Penicillium brevicompactum	Improves Lactuca sativa L. growth	Molina-Montenegro et al., 2016