In:
Journal of Biobased Materials and Bioenergy, American Scientific Publishers, Vol. 15, No. 4 ( 2021-08-01), p. 553-558
Abstract:
Drought and salt are main environmental factors that affect the growth, development, productivity and distribution of plants of plants. Alfalfa has a strong ability of early and salt resistance. In this work, the varieties Xinjiang Daye was used as material, the effects of drought (simulated
with PEG, polyethylene glycol-6000) and salt stress (with NaCl solution) on the antioxidant capacity of alfalfa seedlings and stress resistance genes was studied, to select alfalfa varieties with strong resistance and study its functional principle of resistance related genes. The results showed that with the increase of drought stress, the contents of H 2 O 2 , O 2− , MDA increased by 323, 247 and 235 (15% PEG treatment). The activities of SOD, CAT and APX increased by 18.01, 15.56 and 587% (15% PEG treatment), respectively. The expression
of drought resistance genes increased significantly. With the increase in NaCl stress, the activities of SOD, cat, pod and APX increased by 132.14, 315.60, 102.78 and 27.61%, respectively. The expression of two genes related to salt stress increased significantly. In conclusion, alfalfa leaves have good survival ability under high stress, and the activities of antioxidant enzymes and the expression of related genes have adaptive changes under drought and salt stress.
Type of Medium:
Online Resource
ISSN:
1556-6560
DOI:
10.1166/jbmb.2021.2083
Language:
English
Publisher:
American Scientific Publishers
Publication Date:
2021
