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Tolerance to combined boron and salt stress in wheat varieties: Biochemical and molecular characterization

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Title Tolerance to combined boron and salt stress in wheat varieties: Biochemical and molecular characterization
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Creator Charu Lata, Ashwani Kumar, SK Sharma, Jogendra Singh, Shital Sheokand, Pooja, Anita Mann and Babita Rani
 
Subject Abiotic stress, Protein profile, Polypeptides, SDS-PAGE, Micronutrients, Triticum aestivum
 
Description Not Available
Plants’ tolerance to stresses, particularly abiotic, is an important area of research, particularly in agriculture. Here, we
studied the combined effect of excess boron (B) and salinity on three wheat varieties viz., KRL 35, KRL 210 and HD 2009.
Root samples were collected 20 days after imposing different treatments, namely Control, 50 and 100 ppm B + 60 mM
NaCl, respectively; and 50 and 100 ppm B + 100 mM NaCl, respectively in a hydroponic system. Results indicated that
length, fresh and dry weight of root and shoot consistently decreased with increasing concentration of B and salt in the
nutrient medium. These changes were accompanied by significant reductions in soluble sugars and proteins in roots,
whereas proline content increased. The KRL 35 (salt tolerant variety) showed 5 specific polypeptides of 89.13, 53.4, 46.21,
32.35 and 31.10 kDa. Likewise, KRL 210 (moderately salt tolerant) showed de novo synthesis of 53.4 and 19.13 kDa,
whereas three specific polypeptides (24.05, 19.13 and 17.52 kDa) appeared in HD 2009 (salt sensitive). Synthesis of the
common polypeptide 25.12 kDa was observed with increase in stress treatments in all three varieties. Enhanced expression
of 25.12 kDa proteins, particularly in the sensitive variety induced protein synthesis under excess boron and salt stress
conditions. Thus, altered and enhanced expression of proteins might be responsible for the survival and growth of plants
under excess B and NaCl affecting the functional capabilities of seeds in the stress environment. Appearance of new
polypeptide(s) or their disappearance might be related to the genotypic stress tolerance or sensitivity.
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Date 2018-11-14T11:40:04Z
2018-11-14T11:40:04Z
2017-05-01
 
Type Research Paper
 
Identifier Charu Lata, Ashwani Kumar, SK Sharma, Jogendra Singh, Shital Sheokand, Pooja, Anita Mann and Babita Rani (2017) Tolerance to combined boron and salt stress in wheat varieties: Biochemical and molecular characterization. Indian Journal of Experimental Biology. 55: 321-328
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http://krishi.icar.gov.in/Publication/handle/123456789/11301
 
Language English
 
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Publisher Not Available