Indian Society of Genetics & Plant Breeding
Barley is the most salt tolerant cereal and is grown in a
wide range of climatic conditions. To improve the plant
tolerance to salinity‚ expression analysis of genes involved
in stress tolerance could be effective in identification and
development of tolerant genotypes. In this study, for
evaluation of salinity effect on expression of HvTIP2;3 and
HvTIP4;1 genes (encoding channel proteins in the
membrane) in the root of barley, three genotypes viz.,
Clipper (salt susceptible), Sahara3771 (salt tolerant) and
advanced breeding line (a salt tolerant line derived from a
cross between Kavir and Sahara genotypes) were planted
under 0, 100 and 200 mMNaCl. Analysis of variance revealed
non-significant differences among genotypes, salinity levels
and sampling stages for HvTIP2;3 and HvTIP4;1 genes
expression pattern, whereas genotype x salinity interaction
for HvTIP2;3 and genotype x sampling stage interaction
were significant for both of the genes studied. The
expression of HvTIP 2;3 gene in the 100 mMNaCl, was
increased in salt susceptible genotype Clipper and
decreased in tolerant genotypes compared with control.
Mean comparison of genotype and sampling stage
combination showed that the expression level of HvTIP4;1
gene 3 weeks after salinity stress was increased in Sahara
and advanced breeding line and decreased in Clipper. The
study revealed that these genes are affected under salinity
stress‚ and their effective utilization may increase salinity
tolerance in plants.
Keywords: Aquaporins, Expression pattern, Tonoplast intrinsic proteins, Salinity stress
Year: 2017
Volume: 77
Issue: 4
Article DOI: 10.5958/0975-6906.2017.00069.4
Print ISSN: 0019-5200
Online ISSN: 0975-6906
Robab Salami info_circle
Seyed Abolghasem Mohammadi info_circle
Sara Ghaffariyan info_circle
Mohammad Moghaddam info_circle
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