Identification of drought tolerant progenies in tea by gene expression analysis.

Functional & Integrative Genomics
Sushmita GuptaSudripta Das

Abstract

Understanding the genes that govern tea plant (Camellia sinensis) architecture and response to drought stress is urgently needed to enhance breeding in tea with improved water use efficiency. Field drought is a slow mechanism and the plants go through an adaptive process in contrast to the drastic changes of rapid dehydration in case of controlled experiments. We identified a set of drought responsive genes under controlled condition using SSH, and validated the identified genes and their pattern of expression under field drought condition. The study was at three stages of water deficit stress viz., before wilting, wilting and recovery, which revealed a set of genes with higher expression at before wilting stage including dehydrin, abscissic acid ripening protein, glutathione peroxidase, cinnamoyl CoA reductase, calmodulin binding protein. The higher expression of these genes was related with increase tolerance character of DT/TS-463 before wilting, these five tolerant progenies could withstand drought stress and thus are candidates for breeding. We observed that physiological parameter like water use efficiency formed a close group with genes such as calmodulin related, DRM3, hexose transporter, hydrogen peroxide induced prote...Continue Reading

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Citations

Jan 11, 2014·Functional & Integrative Genomics·Arun K ShankerB Venkateswarlu
Jul 21, 2015·International Journal of Molecular Sciences·Christoph Tim KrannichRenate Horn
Nov 14, 2015·Plant Cell Reports·Mainaak MukhopadhyayPradeep K Chand
Feb 26, 2019·Physiology and Molecular Biology of Plants : an International Journal of Functional Plant Biology·Mehdi RahimiMojtaba Mortezavi

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