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Protective role of nitric oxide on nitrogen-thiol metabolism and amino acids profiling during arsenic exposure in Oryza sativa L.

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Title Protective role of nitric oxide on nitrogen-thiol metabolism and amino acids profiling during arsenic exposure in Oryza sativa L.
 
Creator Praveen, Afsana
Pandey, Ashutosh
Gupta, Meetu
 
Subject Nitric Oxide
Arsenite
Oxidative stress
Oryza sativa
Amino acid
 
Description Accepted date: 1 July 2020
Nitric oxide (NO) being a signaling molecule inside the plant cells, play significant role in signaling cascades and protection
against environmental stresses. However, the protective role of NO in alleviating As toxicity in rice plants is currently not
available. In the present study, the level of NO, nitrogen (N), inorganic N (nitrate, ammonium), thiols {TT (Total thiols),
NPT (Nonprotein thiol)} and AAs contents along with N assimilating enzymes (NR, GDH, GOGAT) were analyzed after
exposure of AsIII/NO treatment alone, and in combination. NO supplementation enhanced the content of N, inorganic N &
thiol contents, NR, GOGAT activities, when compared with AsIII exposure alone. In AsIII exposed rice seedlings, content of
AAs (except His, Arg, Met) reduced over the control, while supplementation of SNP improved AAs contents, compared to
AsIII treatment alone. In conclusion, rice seedlings supplemented with NO tolerate the AsIII toxicity by reducing the N related
parameters, thiol contents, altering the AA profile and enhanced the nutritional quality by increasing EAAs (essential amino
acids) and NEAAs (non-essential amino acids).
AP (DBT/JRF/14/AL/250) thanks Department of
Biotechnology (DBT), Govt. of India for fellowship.
 
Date 2020-07-16T06:19:24Z
2020-07-16T06:19:24Z
2020
 
Type Article
 
Identifier Ecotoxicology, 29: 825–836
1573-3017
http://223.31.159.10:8080/jspui/handle/123456789/1077
https://link.springer.com/article/10.1007%2Fs10646-020-02250-z
https://doi.org/10.1007/s10646-020-02250-z
 
Language en_US
 
Format application/pdf
 
Publisher Springer Nature Publishing AG