Temperature induced physiological and biochemical alterations in the paddy field cyanobacterium Anabaena doliolum

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dc.contributor.authorReddy, Yattapu Prasaden_US
dc.contributor.authorYadav, Ravindra Kumaren_US
dc.contributor.authorTripathi, Keshawananden_US
dc.contributor.authorAbraham, Gen_US
dc.date.accessioned2020-01-02T06:38:40Z
dc.date.available2020-01-02T06:38:40Z
dc.date.issued2019-05
dc.description.abstractCombustion of fossil fuels and resultant emission of carbon dioxide has led to increased global temperature. Since cyanobacteria are an integral component of the paddy field microflora and contribute to nitrogen fixation, increase in temperature may adversely affect the nitrogen dynamics of the soil. Therefore, to understand the physiological and biochemical response of the mesophilic diazotrophic cyanobacterium Anabaena doliolum to elevated temperature, the organism was grown under three temperature regimes 30, 35 and 40°C for 15 days. Exposure of the cyanobacterium to 40°C resulted in severe reduction in growth and cellular constituents as compared to the cells exposed to 35°C. The cyanobacterial cells also showed enhanced production of H2O2 and lipid peroxidation products in response to exposure to elevated temperature. Further, we observed increased activity of superoxide dismutase, catalase and peroxidase in A. doliolum exposed to elevated temperature. Increase in the temperature resulted in enhanced level of non-enzymatic antioxidants such as carotenoid, proline and ascorbate. Although, the number of heterocysts increased in response to temperature, the nitrogenase activity decreased significantly. The results have demonstrated the sensitivity of the cyanobacterium A. doliolum to elevated temperature.en_US
dc.identifier.affiliationsCentre for Conservation and Utilization of BGA, ICAR-Indian Agricultural Research Institute, New Delhi-110 012, Indiaen_US
dc.identifier.citationReddy Yattapu Prasad, Yadav Ravindra Kumar, Tripathi Keshawanand, Abraham G. Low dose e-beam irradiation consequence on plant growth promoting properties of lichenized bacteria, Enterobacter cloacae and Providencia rettgeri. Indian Journal of Experimental Biology. 2019 May; 57(5): 362-367en_US
dc.identifier.issn0975-1009
dc.identifier.issn0019-5189
dc.identifier.placeIndiaen_US
dc.identifier.urihttps://imsear.searo.who.int/handle/123456789/191466
dc.languageenen_US
dc.publisherNISCAIR-CSIR, Indiaen_US
dc.relation.issuenumber5en_US
dc.relation.volume57en_US
dc.source.urihttps://nopr.niscair.res.in/handle/123456789/47166en_US
dc.titleTemperature induced physiological and biochemical alterations in the paddy field cyanobacterium Anabaena doliolumen_US
dc.typeJournal Articleen_US
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