Biocontrol of vascular wilt and corm rot of gladiolus caused by Fusarium oxysporum f. sp. gladioli using plant growth promoting rhizobacterial mixture

2011 ◽  
Vol 30 (7) ◽  
pp. 807-813 ◽  
Author(s):  
Veerubommu Shanmugam ◽  
Nandina Kanoujia ◽  
Markandey Singh ◽  
Sukhjinder Singh ◽  
Ramdeen Prasad
Keyword(s):  
Plant Growth ◽  
Fusarium Oxysporum ◽  
Vascular Wilt ◽  
Plant Growth Promoting ◽  
Growth Promoting

scholarly journals Plant growth promoting bacteria with potential biocontrol agent of Fusarium oxysporum f. sp. Lycopersici , and Moniliophthora roreri

2019 ◽  
Vol 10 (3) ◽  
pp. 393-402
Author(s):  
Jefferson Guato-Molina ◽  
Javier Auhing-Arcos ◽  
Jorge Crespo-Ávila ◽  
Gabriel Esmeraldas-García ◽  
Antonio Mendoza-León ◽  
...  
Keyword(s):  
Plant Growth ◽  
Fusarium Oxysporum ◽  
Biocontrol Agent ◽  
Plant Growth Promoting Bacteria ◽  
Potential Biocontrol Agent ◽  
Plant Growth Promoting ◽  
Growth Promoting ◽  
Moniliophthora Roreri

scholarly journals Isolation and Characterization of Plant Growth-Promoting Endophytic Bacteria Paenibacillus polymyxa SK1 from Lilium lancifolium

2020 ◽  
Vol 2020 ◽  
pp. 1-17 ◽  
Author(s):  
Mohammad Sayyar Khan ◽  
Junlian Gao ◽  
Xuqing Chen ◽  
Mingfang Zhang ◽  
Fengping Yang ◽  
...  
Keyword(s):  
Plant Growth ◽  
Fusarium Oxysporum ◽  
Botrytis Cinerea ◽  
Paenibacillus Polymyxa ◽  
Fusarium Fujikuroi ◽  
Botryosphaeria Dothidea ◽  
Isolation And Characterization ◽  
Plant Growth Promoting ◽  
Growth Promoting ◽  
Lilium Lancifolium

Paenibacillus polymyxa is a plant growth-promoting rhizobacterium that has immense potential to be used as an environmentally friendly replacement of chemical fertilizers and pesticides. In the present study, Paenibacillus polymyxa SK1 was isolated from bulbs of Lilium lancifolium. The isolated endophytic strain showed antifungal activities against important plant pathogens like Botryosphaeria dothidea, Fusarium oxysporum, Botrytis cinerea, and Fusarium fujikuroi. The highest percentage of growth inhibition, i.e., 66.67 ± 2.23%, was observed for SK1 against Botryosphaeria dothidea followed by 61.19 ± 3.12%, 60.71 ± 3.53%, and 55.54 ± 2.89% against Botrytis cinerea, Fusarium fujikuroi, and Fusarium oxysporum, respectively. The metabolite profiling of ethyl acetate fraction was assessed through the UHPLC-LTQ-IT-MS/MS analysis, and putative identification was done with the aid of the GNPS molecular networking workflow. A total of 29 compounds were putatively identified which included dipeptides, tripeptides, cyclopeptides (cyclo-(Leu-Leu), cyclo(Pro-Phe)), 2-heptyl-3-hydroxy 4-quinolone, 6-oxocativic acid, anhydrobrazilic acid, 1-(5-methoxy-1H-indol-3-yl)-2-piperidin-1-ylethane-1,2-dione, octadecenoic acid, pyochelin, 15-hydroxy-5Z,8Z,11Z, 13E-eicosatetraenoic acid, (Z)-7-[(2R,3S)-3-[(2Z,5E)-Undeca-2,5-dienyl]oxiran-2-yl]hept-5-enoic acid, arginylasparagine, cholic acid, sphinganine, elaidic acid, gossypin, L-carnosine, tetrodotoxin, and ursodiol. The high antifungal activity of SK1 might be attributed to the presence of these bioactive compounds. The isolated strain SK1 showed plant growth-promoting traits such as the production of organic acids, ACC deaminase, indole-3-acetic acid (IAA), siderophores, nitrogen fixation, and phosphate solubilization. IAA production was strongly correlated with the application of exogenous tryptophan concentrations in the medium. Furthermore, inoculation of SK1 enhanced plant growth of two Lilium varieties, Tresor and White Heaven, under greenhouse condition. In the light of these findings, the P. polymyxa SK1 may be utilized as a source of plant growth promotion and disease control in sustainable agriculture.

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