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Genetic analysis of plant endophytic Pseudomonas putida BP25 and chemo-profiling of its antimicrobial volatile organic compounds

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Title Genetic analysis of plant endophytic Pseudomonas putida BP25 and chemo-profiling of its antimicrobial volatile organic compounds
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Creator Neelam S, Vibhuti M, Aditi K, Kumar A
Agisha V N, Suseelabhai R, Eapen S J
Subaharan K, Vibina V
 
Subject Pseudomonas putida, Black pepper, Endophytic bacteria, Ginger, Volatile organic compounds
 
Description Not Available
Black pepper associated bacterium BP25 was isolated from root endosphere of apparently healthy cultivar Panniyur - 5 that protected black pepper against Phytophthora capsici and Radopholus similis – the
major production constraints. The bacterium was characterized and mechanisms ofits antagonistic action
against major pathogens are elucidated. The polyphasic phenotypic analysis revealed its identity as Pseudomonas putida. Multi locus sequence typing revealed that the bacterium shared gene sequences with
several other isolates representing diverse habitats. Tissue localization assays exploiting green fluorescence protein expression clearly indicated that PpBP25 endophytically colonized not only its host plant – black pepper, but also other distantly related plants such as ginger and arabidopsis. PpBP25 colonies could be enumerated from internal tissues of plants four weeks post inoculation indicated its stable establishment and persistence in the plant system. The bacterium inhibited broad range of pathogens such as Phytophthora capsici, Pythium myriotylum, Giberella moniliformis, Rhizoctonia solani, Athelia rolfsii, Colletotrichum gloeosporioides and plant parasitic nematode, Radopholus similis by its volatile substances. GC/MS based chemical profiling revealed presence of Heneicosane; Tetratetracontane; Pyrrolo [1,2 - a] pyrazine - 1,4 - dione, hexahydro - 3 - (2 - methylpropyl); Tetracosyl heptafluorobutyrate; 1 - 3 - Eicosene, (E) - ; 1 - Heneicosanol; Octadecyl trifluoroacetate and 1 - Pentadecene in PpBP25 metabolite. Dynamic head space GC/MS analysis of airborne volatiles indicated the presence of aromatic compounds such as 1 - Undecene; Disulfide dimethyl; Pyrazine, methyl - Pyrazine, 2,5 - dimethyl - ; Isoamyl alcohol; Pyrazine, methyl - ; Dimethyl trisulfide, etc. The work paved way for profiling of broad spectrum antimicrobial VOCs in endophytic PpBP25 for crop protection.
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Date 2024-04-12T14:39:37Z
2024-04-12T14:39:37Z
2015-02-17
 
Type Research Paper
 
Identifier Neelam S, Agisha V N, Vibhuti M, Aditi K, Subaharan K, Vibina V, Suseelabhai R, Eapen S J and Kumar A 2015. Genetic analysis of plant endophytic Pseudomonas putida BP25 and chemo-profiling of its antimicrobial volatile organic compounds. Microbiological Research 173: 66–78 doi:10.1016/j.micres.2015.02.001.
0944-5013
http://krishi.icar.gov.in/jspui/handle/123456789/82006
 
Language English
 
Relation Not Available;
 
Publisher Elsevier