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Differential expression of salt-responsive genes to salinity stress in salt-tolerant and salt-sensitive rice (Oryza sativa L.) at seedling stage

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Title Differential expression of salt-responsive genes to salinity stress in salt-tolerant and salt-sensitive rice (Oryza sativa L.) at seedling stage
 
Creator Singh, Vijayata
Singh, Ajit Pal
Bhadoria, Jyoti
Giri, Jitender
Singh, Jogendra
T. V., Vineeth
Sharma, P. C.
 
Subject Rice
Salt stress
Gene expression
Ionic homeostasis
 
Description Accepted date: 1 May 2018
The understanding of physio-biochemical and molecular attributes along with morphological traits contributing to the salinity tolerance is important for developing salt-tolerant rice (Oryza sativa L.) varieties. To explore these facts, rice genotypes CSR10 and MI48 with contrasting salt tolerance were characterized under salt stress (control, 75 and 150 mM NaCl) conditions. CSR10 expressed higher rate of physio-biochemical parameters, maintained lower Na/K ratio in shoots, and restricted Na translocation from roots to shoots than MI48. The higher expression of genes related to the osmotic module (DREB2A and LEA3) and ionic module (HKT2;1 and SOS1) in roots of CSR10 suppresses the stress, enhances electrolyte leakage, promotes the higher compatible solute accumulation, and maintains cellular ionic homeostasis leading to better salt stress tolerance than MI48. This study further adds on the importance of these genes in salt tolerance by comparing their behaviour in contrasting rice genotypes and utilizing specific marker to identify salinity-tolerant accessions/donors among germplasm; overexpression of these genes which accelerate the selection procedure precisely has been shown.
 
Date 2018-05-10T11:54:20Z
2018-05-10T11:54:20Z
2018
 
Type Article
 
Identifier Protoplasma, 255(6): 1667-1681
1615-6102
http://223.31.159.10:8080/jspui/handle/123456789/855
https://link.springer.com/article/10.1007/s00709-018-1257-6
https://doi.org/10.1007/s00709-018-1257-6
 
Language en_US
 
Format application/pdf
 
Publisher Springer Nature