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J Appl Microbiol

Title:		Strain-specific variation in plant growth promoting volatile organic compounds production by five different Pseudomonas spp. as confirmed by response of Vigna radiata seedlings
Author(s):		Jishma P; Hussain N; Chellappan R; Rajendran R; Mathew J; Radhakrishnan EK;
Address:		"School of Biosciences, Mahatma Gandhi University, Kottayam, Kerala, India"
Journal Title:		J Appl Microbiol
Year:		2017
Volume:		123
Issue:		1
Page Number:		204 - 216
DOI:		10.1111/jam.13474
ISSN/ISBN:		1365-2672 (Electronic) 1364-5072 (Linking)
Abstract:		"AIM: Analysis of a blend of volatile organic compounds (VOCs) released by Pseudomonas spp. with growth-promoting effect in Vigna radiata seedlings. METHODS AND RESULTS: Plant growth-promoting activity of VOCs produced by five different Pseudomonas spp. was investigated by I-plate technique. VOCs produced by different organisms were extracted by various solvents (methanol, ethyl acetate, hexane and butanol) and were identified by gas chromatography-mass spectrometric analysis. The major VOCs identified were undecane, nonadecane, hexacosane, tetradecane, heptacosane, pentadecane, dodecane and tetratetracontane. The cultural conditions for the production of VOCs with plant growth enhancement effect were optimized and further confirmed using pure pentadecane as a candidate VOC. CONCLUSIONS: The study provides insight into plant beneficial effect of VOCs produced by Pseudomonas spp. Remarkable modulation in the production of VOCs with plant growth-promoting effect by rhizobacteria was found to be dependent on the bacterial strain and its concentration. SIGNIFICANCE AND IMPACT OF THE STUDY: The study describes the requirement to consider bacterial VOC production also for preparing plant probiotic formulations. As VOCs are least considered for preparation of commercial plant growth-promoting rhizobacterial strain formulation, the results of the study is highly significant"
Keywords:		Pgpr GC-MS analysis Pseudomonas spp.pentadecane volatile organic compounds;
Notes:		"PubMed-not-MEDLINEJishma, P Hussain, N Chellappan, R Rajendran, R Mathew, J Radhakrishnan, E K eng Kerala State Council for Science, Technology and Environment- Science Research Scheme (KSCSTE-SRS)/ Kerala State Council for Science, Technology and Environment-Selective Augmentation of Research and Development (KSCSTE- SARD) Program/ England 2017/04/20 J Appl Microbiol. 2017 Jul; 123(1):204-216. doi: 10.1111/jam.13474"