Salinity stress induced physiological and biochemical changes in Azolla pinnata

S. K. Panda; R. K. Upadhyay; H. Upadhyaya

doi:10.1556/abot.48.2006.3-4.11

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Acta Botanica Hungarica

Volume/Issue:: Volume 48: Issue 3-4

Salinity stress induced physiological and biochemical changes in Azolla pinnata

Authors:

S. K. Panda

S. K. Panda Plant Biochemistry Laboratory, School of Life Sciences, Assam University Silchar 788011, India

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R. K. Upadhyay

R. K. Upadhyay Plant Biochemistry Laboratory, School of Life Sciences, Assam University Silchar 788011, India

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, and

H. Upadhyaya

H. Upadhyaya Plant Biochemistry Laboratory, School of Life Sciences, Assam University Silchar 788011, India

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Pages:: 369–380

Online Publication Date:: 28 Sep 2006

Publication Date:: 01 Sep 2006

Article Category:: Journal Article

DOI:: https://doi.org/10.1556/abot.48.2006.3-4.11

Keywords:: salinity stress; physiological and biochemical changes; Azolla pinnata

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On brief exposure of Azolla fronds to salinity stress, a significant decrease in photosynthetic pigment like chlorophyll and carotenoid with a decrease in ascorbate and glutathione content was observed. Lipid peroxidation increases with doses of NaCl stress resulting a greater membrane damage supported by increase in superoxide radical. However, increase in activities of superoxide dismutase, catalase, guaiacol peroxidase and glutathione reductase showed the development of biochemical defence mechanism against free radicals generated during exposure to short-term salinity stress. K+ ion was found to be decreased with increasing NaCl concentration, with a decrease in relative water content. An increase in fresh mass was observed, with a significant increase in dry mass suggested a development of salt tolerance in Azolla exposed to short-term salinity stress.

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Acta Botanica Hungarica

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Acta Botanica Hungarica
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