Expression Profiling of Abiotic Stress-Inducible Genes in response to Multiple Stresses in Rice (Oryza sativa L.) Varieties with Contrasting Level of Stress Tolerance
Joint Authors
Roychoudhury, Aryadeep
Basu, Supratim
Source
Issue
Vol. 2014, Issue 2014 (31 Dec. 2014), pp.1-12, 12 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2014-07-07
Country of Publication
Egypt
No. of Pages
12
Main Subjects
Abstract EN
The present study considered transcriptional profiles and protein expression analyses from shoot and/or root tissues under three abiotic stress conditions, namely, salinity, dehydration, and cold, as well as following exogenous abscisic acid treatment, at different time points of stress exposure in three indica rice varieties, IR-29 (salt sensitive), Pokkali, and Nonabokra (both salt tolerant).
The candidate genes chosen for expression studies were HKT-1, SOS-3, NHX-1, SAPK5, SAPK7, NAC-1, Rab16A, OSBZ8, DREBP2, CRT/DREBP, WRKY24, and WRKY71, along with the candidate proteins OSBZ8, SAMDC, and GST.
Gene expression profile revealed considerable differences between the salt-sensitive and salt-tolerant rice varieties, as the expression in the latter was higher even at the constitutive level, whereas it was inducible only by corresponding stress signals in IR-29.
Whether in roots or shoots, the transcriptional responses to different stressors peaked following 24 h of stress/ABA exposure, and the transcript levels enhanced gradually with the period of exposure.
The generality of stress responses at the transcriptional level was therefore time dependent.
Heat map data also showed differential transcript abundance in the three varieties, correlating the observation with transcript profiling.
In silico analysis of the upstream regions of all the genes represented the existence of conserved sequence motifs in single or multiple copies that are indispensable to abiotic stress response.
Overall, the transcriptome and proteome analysis undertaken in the present study indicated that genes/proteins conferring tolerance, belonging to different functional classes, were overrepresented, thus providing novel insight into the functional basis of multiple stress tolerance in indica rice varieties.
The present work will pave the way in future to select gene(s) for overexpression, so as to generate broad spectrum resistance to multiple stresses simultaneously.
American Psychological Association (APA)
Basu, Supratim& Roychoudhury, Aryadeep. 2014. Expression Profiling of Abiotic Stress-Inducible Genes in response to Multiple Stresses in Rice (Oryza sativa L.) Varieties with Contrasting Level of Stress Tolerance. BioMed Research International،Vol. 2014, no. 2014, pp.1-12.
https://search.emarefa.net/detail/BIM-492133
Modern Language Association (MLA)
Basu, Supratim& Roychoudhury, Aryadeep. Expression Profiling of Abiotic Stress-Inducible Genes in response to Multiple Stresses in Rice (Oryza sativa L.) Varieties with Contrasting Level of Stress Tolerance. BioMed Research International No. 2014 (2014), pp.1-12.
https://search.emarefa.net/detail/BIM-492133
American Medical Association (AMA)
Basu, Supratim& Roychoudhury, Aryadeep. Expression Profiling of Abiotic Stress-Inducible Genes in response to Multiple Stresses in Rice (Oryza sativa L.) Varieties with Contrasting Level of Stress Tolerance. BioMed Research International. 2014. Vol. 2014, no. 2014, pp.1-12.
https://search.emarefa.net/detail/BIM-492133
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-492133