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Table 1.1 Plant Growth Promoting Substances Released by PGPR

PGPR Plant growth promoting
traits

Mesorhizobium loti Siderophore, HCN, IAA

MP6
Pseudomonas tolaasii Siderophores, IAA

ACC23

Bacillus spp. IAA (Beneduzi et al., 2008)
Enterobacter cloacae (Halda-Alija, 2003)

Pseudomonas denitrificans Auxin (Egamberdieva et al.,

2015)

Klebsiella spp. IAA, Siderophores, Exo- (Arif et al., 2017; Wu et

polysaccharides, Phosphate al., 2014)

R. cicero, R. meliloti, R. phaseoli, Siderophore, HCN, (Bhattacharyya et al., 2012;
Bradyrhizobium Ammonia, Nitrogen, IAA, Xiaohui et al., 2017)

Azospirillum Phosphate

P. fluorescens A3R3, IAA, Phosphate, HCN, (Aras et al., 2018; Arıka n
Psychrobacter spp. Azospirillum, P. Gibberellin, et al., 2018; Kumar et al.,

putida Nitrogen, Siderophores, 2015)

Antifungal compounds

Pseudomonas aeruginosa IAA, HCN, Siderophores, (Ahemad et al., 2010;

Ammonia, Phosphate, Exo- Ahemad & Khan, 2011a;
polysaccharides, Ahemad et al., 2012b)

Klebsiella sp. IAA, Siderophores, Exo- (Ahemad & Khan, 2011a,

polysaccharides, Phosphate
2011b; Ahemad & Khan,

2011)

Rhizobium sp. Mesorhizobium sp. IAA, HCN, (Ahemad & Khan, 2011c;

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