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Proline and betaine provide protection to antioxidant and methylglyoxal detoxification systems during cold stress in Camellia sinensis (L.) O. Kuntze

IR@CSIR-IHBT

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Title Proline and betaine provide protection to antioxidant
and methylglyoxal detoxification systems during cold stress
in Camellia sinensis (L.) O. Kuntze
 
Creator kumar, Vinay
Yadav , S K
 
Subject Plant Biotechnology
 
Description The aim of this study was to monitor the
influence of proline and betaine exposure on antioxidant
and methylglyoxal (MG) detoxification system during cold
stress in Camellia sinensis (L.) O. Kuntze. Cold stress
enhanced MG and lipid peroxidation levels in tea bud
(youngest topmost leaf). This increase was resisted upon
the exposure of tea bud to proline and betaine. Exposure of
tea bud with proline and betaine also help in maintaining
thiol/disulfide ratio during cold stress. Proline exposure
enhanced glutathione-S-transferase and glutathione reductase
(GR) activity, while betaine exposure increased
only GR activity during cold stress. Furthermore, effect
of proline/betaine was studied on glyoxalase pathway
enzymes that are involved in MG detoxification and comprise
of two enzymes glyoxalase I and glyoxalase II. Both
proline and betaine showed protective effect on glyoxalase
I and activating effect on glyoxalase II during cold stress in
tea bud. This investigation, therefore, suggest that proline
and betaine might provide protection to cold stress in tea by
regulating MG and lipid peroxidation formation as well as
by activating or protecting some of antioxidant and glyoxalase
pathway enzymes.
 
Date 2009
 
Type Article
PeerReviewed
 
Format application/pdf
 
Identifier http://ihbt.csircentral.net/304/1/282_2009_Proline.pdf
kumar, Vinay and Yadav , S K (2009) Proline and betaine provide protection to antioxidant and methylglyoxal detoxification systems during cold stress in Camellia sinensis (L.) O. Kuntze. Acta Physiologiae Plantarum, 36. pp. 261-269.
 
Relation http://ihbt.csircentral.net/304/