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Fruit ripening mutants reveal cell metabolism and redox state during ripening

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Title Fruit ripening mutants reveal cell metabolism and redox state during ripening
 
Creator Kumar, Vinay
Irfan, Mohammad
Ghosh, Sumit
Chakraborty, Niranjan
Chakraborty, Subhra
Datta, Asis
 
Subject Solanum lycopersicum
Ripening mutants
ROS
 
Description Accepted date: 17 May 2015
Ripening which leads to fruit senescence is an inimitable process characterized by vivid changes in color, texture, flavor, and aroma of the fleshy fruits. Our understanding of the mechanisms underlying the regulation of fruit ripening and senescence is far from complete. Molecular and biochemical studies on tomato (Solanum lycopersicum) ripening mutants such as ripening inhibitor (rin), nonripening (nor), and never ripe (Nr) have been useful in our understanding of fruit development and ripening. The MADS-box transcription factor RIN, a global regulator of fruit ripening, is vital for the broad aspects of ripening, in both ethylene-dependent and independent manners. Here, we have carried out microarray analysis to study the expression profiles of tomato genes during ripening of wild type and rin mutant fruits. Analysis of the differentially expressed genes revealed the role of RIN in regulation of several molecular and biochemical events during fruit ripening including fruit specialized metabolism and cellular redox state. The role of reactive oxygen species (ROS) during fruit ripening and senescence was further examined by determining the changes in ROS level during ripening of wild type and mutant fruits and by analyzing expression profiles of the genes involved in maintaining cellular redox state. Taken together, our findings suggest an important role of ROS during fruit ripening and senescence, and therefore, modulation of ROS level during ripening could be useful in achieving desired fruit quality.
This study was funded by a research grant (BT/01/
CEIB/12/II/01) from the Department of Biotechnology and core research
grant from the National Institute of Plant Genome Research. VK and SG
thank the National Institute of Plant Genome Research for post-doctoral
fellowship. MI thanks the University Grant Commission for pre-doctoral
fellowship.
 
Date 2016-01-28T09:53:35Z
2016-01-28T09:53:35Z
2016
 
Type Article
 
Identifier Protoplasma, 253(2): 581-594
1615-6102
http://172.16.0.77:8080/jspui/handle/123456789/605
http://link.springer.com/article/10.1007%2Fs00709-015-0836-z
10.1007/s00709-015-0836-z
 
Language en_US
 
Publisher Springer