Sodium nitroprusside

Salt (chemistry)

Amino acid

Biology

Nitric oxide

Biochemistry

Botany

Physical chemistry

Organic chemistry

Proline

Lipid peroxidation

Agronomy

Oxidative stress

Antioxidant

Horticulture

Photosynthesis

Chemistry

Environmental and Experimental Botany

The involvement of nitric oxide (as sodium nitroprusside, SNP) in the reversal of glucose (Glu)-inhibited photosynthetic characteristics in the presence or absence of salt stress (100 mM NaCl) was studied in wheat (Triticum aestivum L.). The plants treated with either NaCl or 6% Glu exhibited reduced photosynthesis due to higher oxidative stress. The increased content of Na+ and Cl−, and lipid peroxidation in plants grown under salt stress were reduced with the application of 50μM SNP. The SNP- treated plants with or without 6% Glu exhibited reduced Glu and ethylene sensitivity and oxidative stress, resulting in improved photosynthesis under salt stress through upregulation of antioxidant system, proline accumulation and N assimilation. The results show that SNP improves photosynthetic performance of plants in the absence of salt stress, and also reduces glucose-mediated repression of photosynthesis under salt stress.

Nitric oxide reverses glucose-mediated photosynthetic repression in wheat (Triticum aestivum L.) under salt stress