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Reactive oxygen species, nitric oxide production and antioxidant gene expression during development of aerenchyma formation in wheat

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Title Reactive oxygen species, nitric oxide production and antioxidant gene expression during development of aerenchyma formation in wheat
 
Creator Wany, Aakanksha
Gupta, Kapuganti Jagadis
 
Subject Aerenchyma
antioxidants
nitric oxide
reactive oxygen species
superoxide
 
Description Accepted date: 12 January 2018
In response to hypoxia, plant roots produce very high levels of nitric oxide. Recently, it
was demonstrated that NO and ethylene both are essential for development of
aerenchyma in wheat roots under hypoxia. Increased NO under hypoxia correlated with
induction of NADPH oxidase gene expression, ROS production and lipid peroxidation in
cortical cells. Tyrosine nitration was prominent in cells developing aerenchyma
suggesting that NO and ROS play a key role in development of aerenchyma. However,
the role of antioxidant genes during development of aerenchyma is not known,
therefore, we checked gene expression of various antioxidants such as SOD1, AOX1A,
APX and MnSOD at different time points after hypoxia treatment and found that
expression of these genes elevated in 2 h but downregulated in 24 h where
development of aerenchyma is prominent. Further, we found that plants growing under
ammonium nutrition displayed delayed aerenchyma development. Taken together, new
insights presented in this short communication highlighted additional regulatory role of
antioxidants gene expression during aerenchyma development.
This work was supported by Ramalingaswami re-entry fellowship and IYBA from DBT
(KJG);SERB National Postdoctoral Fellowship to (AW). The Central Instrumentation Facility
(CIF) of NIPGR, New Delhi is greatly acknowledged.
 
Date 2018-01-23T06:41:42Z
2018-01-23T06:41:42Z
2018
 
Type Article
 
Identifier Plant Signaling & Behavior, 13(2): e1428515
1559-2324
http://223.31.159.10:8080/jspui/handle/123456789/827
http://www.tandfonline.com/doi/full/10.1080/15592324.2018.1428515
https://doi.org/10.1080/15592324.2018.1428515
 
Language en_US
 
Format application/pdf
 
Publisher Taylor & Francis Group