000			02973nam a22003257a 4500
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008			250306b |||||||| |||| 00| 0 eng d
022			_a0176-1617
040			_aMSU _bEnglish _cMSU _erda
050	0	0	_aQK711.2 JOU
100	1		_aLakra, Nita _eauthor
245	1	2	_aA nuclear-localized histone-gene binding protein from rice (OsHBP1b) functions in salinity and drought stress tolerance by maintaining chlorophyll content and improving the antioxidant machinery _ccreated by Nita Lakra, Kamlesh K. Nutan, Priyanka Das, Khalid Anwar, Sneh L Singla-Pareek and Ashwani Pareek
264	1		_aAmsterdam: _bElsevier GmbH, _c2015.
336			_2rdacontent _atext _btxt
337			_2rdamedia _aunmediated _bn
338			_2rdacarrier _avolume _bnc
440			_aJournal of plant physiology _vVolume 176
520	3		_aPlants have evolved a number of molecular strategies and regulatory mechanisms to cope with abiotic stresses. Among the various key factors/regulators, transcription factors (TFs) play critical role(s) towards regulating the gene expression patterns in response to stress conditions. Altering the expression of the key TFs can greatly influence plant stress tolerance. OsHBP1b (accession no. KM096571) is one such TF belonging to bZIP family, localized within the Saltol QTL, whose expression is induced upon salinity treatment in the rice seedlings. qRT-PCR based expression studies for OsHBP1b in seedlings of contrasting genotypes of rice showed its differential regulation in response to salinity stress. A GFP based in vivo study showed that the OsHBP1b protein is nuclear localized and possesses the trans-activation activity. As compared to the WT tobacco plants, the transgenic plants ectopically expressing OsHBP1b showed better survival and favourable osmotic parameters (such as germination and survival rate, membrane stability, K+/Na+ ratio, lipid peroxidation, electrolyte leakage and proline contents) under salinity and drought stress. Under salinity conditions, the transgenic plants accumulated lower levels of reactive oxygen species as compared to the WT. It was also accompanied by higher activities of antioxidant enzymes (such as ascorbate peroxidase and superoxide dismutase), thereby demonstrating that transgenic plants are physiologically better adapted towards the oxidative damage. Taken together, our findings suggest that OsHBP1b contributes to abiotic stress tolerance through multiple physiological pathways and thus, may serve as a useful ‘candidate gene’ for improving multiple stress tolerance in crop plants.
650			_aDrought
650			_aOsHBP1b
650			_aRice
700			_aNutan, Kamlesh K. _eco-author
700			_aDas, Priyanka _eco-author
700			_aAnwar, Khalid _eco-author
700			_aSingla-Pareek, Sneh L _eco-author
700			_aPareek, Ashwani _eco-author
856			_uhttps://doi.org/10.1016/j.jplph.2014.11.005
942			_2lcc _cJA
999			_c169163 _d169163