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Cold tolerance and plant growth promotion potential of Serratia marcescens strain SRM (MTCC 8708) isolated from flowers of summer squash ( Cucurbita pepo )
Author(s) -
Selvakumar G.,
Mohan M.,
Kundu S.,
Gupta A.D.,
Joshi P.,
Nazim S.,
Gupta H.S.
Publication year - 2008
Publication title -
letters in applied microbiology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.698
H-Index - 110
eISSN - 1472-765X
pISSN - 0266-8254
DOI - 10.1111/j.1472-765x.2007.02282.x
Subject(s) - serratia marcescens , cucurbita pepo , biology , squash , horticulture , siderophore , seedling , inoculation , botany , strain (injury) , cucurbita , bacteria , escherichia coli , biochemistry , genetics , anatomy , gene
Aim: To determine the cold tolerance and plant growth promotion potential of Serratia marcescens strain SRM (MTCC 8708). Methods and Results: Serratia marcescens strain SRM was isolated from the flowers of summer squash plants, showing no apparent symptoms of yellow vine disease. It was evaluated for growth and plant growth promotion attributes at 15 and 4°C. At 15°C, the isolate was able to solubilize 76·6 μ g ml −1 of P and produce Indole Acetic Acid, IAA (11·1 μ g ml −1 ). HCN and siderophore production were also detected at 15°C. The isolate retained all the plant growth promotion traits at 4°C. Seed bacterization with the isolate significantly enhanced plant biomass and nutrient uptake of wheat seedlings grown in cold temperatures. Conclusion: Serratia marcescens strain SRM is a promising cold‐tolerant isolate that can significantly influence wheat seedling growth at cold temperatures. Significance and Impact of the Study: This strain can be employed as a bioinoculant in cold temperature conditions.