Determining the Relationship between Nitric Oxide (NO) and Drought Stress in Pepper Plant

Abstract

The aim of this study is to use the pointy pepper varieties of Demre as a test material and to determine whether NO (Nitric oxide), which is a messenger molecule, has a preventive effect on some metabolic changes that occur under the effect of drought stress in plants. In the experiment carried out in a controlled climate chamber, plants were cultured in containers containing Hoagland nutrient solution. For the application of drought stress, 10% Polyethylene Glycol (PEG 6000) was added to the nutrient solution, which is equivalent to -0.40 MPa osmotic potential. Before the application of drought stress, different doses of sodium nitroprusside (SNP) and potassium salt (carboxy-PTIO) are applied exogenously, SNP 0.01, SNP 1, SNP 100 and SNP 0.01 + cPTIO, SNP 1 + cPTIO, SNP Pre-treated with 100 + cPTIO. On the 10th day of drought, the chlorophyll content of plants, proline deposits and total plant weights were determined. Pre-treated plants with doses of 0.01 and 1 of SNP showed better performance in terms of the parameters determined.

Keywords: Pepper, Capsicum annum, carboxy-PTIO, Drought stress, Nitric oxide, SNP, Chlorophyll, Proline