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Plant Growth-promoting and Biocontrol Potential of Selected Cyanobacteria from Stress Environment

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Title Plant Growth-promoting and Biocontrol Potential of Selected Cyanobacteria from Stress Environment
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Creator Bagul SY, Vishwakarma R, Chakdar H, Pandiyan K, Bandeppa S.
 
Subject Antifungal; cyanobacteria; plant growth promotion; biocontrol; phytopathogens; stress
 
Description Not Available
Cyanobacteria are photosynthetic microorganisms and produce large number of diverse
bioactive compounds. In the present study plant growth promotion and antifungal activities of
fourteen cyanobacteria strains have been studied against selected phytopathogens.
Among screened isolates highest production of IAA was found in Chroococcidiopsis cubana HC1
(102.9 µg/ml) when supplemented with 0.3 mg/mL tryptophan. Co-inoculation of C. cubana (HC1)
and Tolypothrix sp. (RC1) were evaluated for plant growth promoting potential on rice
(Rajendra Sweta) plant which showed enhanced root (20.7±1.0 cm) and shoot length (11.4±1.3 cm)
as well as increased number of forks (36.0±1.0) as compared to control seedlings. Among
fourteen isolates eight cyanobacterial isolates showed zone of inhibition against
selected phytopathogens. Tolypothrix sp RC1 and Nostoc sp. SK1 showed highest
rate of inhibition (50%) against Ralstonia solanaceram while Pseudoanabaena sp. RD1 showed
highest inhibition rate (52%) against Sclerotium rolfsi. Nostoc sp. HC2 found to be highest inhibition
(61%) against Fusarium oxysporum. The cyanobacteria reported in this study have immense
potential for biocontrol against fungal plant pathogens and plant growth promoting ability which
enhances crop growth. Cyanobacterial isolates obtained from the study could be
worthy in sustainable agriculture due to dual advantages of biocontrol as well as plant growth
promotion
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Date 2024-05-10T17:34:58Z
2024-05-10T17:34:58Z
2022-08-09
 
Type Research Paper
 
Identifier Not Available
2320-7035
http://krishi.icar.gov.in/jspui/handle/123456789/82798
 
Language English
 
Relation Not Available;
 
Publisher Not Available