Biologia plantarum 2018, 62:395-399 | DOI: 10.1007/s10535-017-0758-z

Impact of zinc on dehydration and rehydration responses in tea

H. Upadhyaya1,*, B. K. Dutta2, S. K. Panda3
1 Department of Botany, Cotton University, Panbazar, Guwahati, India
2 Department of Ecology and Environmental Sciences, Assam University, Silchar, India
3 Department of Life Science and Bioinformatics, Assam University, Silchar, India

Zinc nutrition of tea (Camelia sinensis) have a great impact on acclimation to dehydration stress and on improvement of stress recovery. Dehydration stress induced by withholding water for 7 d decreased relative water content, dry mass of leaf, and content of antioxidants like ascorbate and glutathione and increased H2O2 content and lipid peroxidation and changed activities of superoxide dismutase, catalase, peroxidase, and glutathione reductase. A pre-treatment with 0.1 and 0.5 mM ZnSO4 minimized these effects and increased Zn uptake. Further, foliar spray with 0.1 and 0.5 mM ZnSO4 before rehydration lowered H2O2 generation, increased content of antioxidants and activities of antioxidative enzymes, and decreased lipid peroxidation. The present findings suggest that zinc regulates water stress responses and recovery after rehydration in tea.

Keywords: antioxidants; Camelia sinensis; lipid peroxidation; relative water content; water stress
Subjects: zinc; water stress; relative water content; rehydration; antioxidants; chlorophyll; proline; tea
Species: Camellia sinensis

Received: July 8, 2016; Revised: April 23, 2017; Accepted: May 31, 2017; Published: June 1, 2018Show citation

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Upadhyaya, H., Dutta, B.K., & Panda, S.K. (2018). Impact of zinc on dehydration and rehydration responses in tea. Biologia plantarum, 62(2), 395-399. doi: 10.1007/s10535-017-0758-z.
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