Title

Effects of salicylic acid pre-treatment on cadmium and/or UV-B stress in soybean seedlings.

Authors

Li, X.; Ma, L.; Bu, N.; Li, Y.; Zhang, L.

Abstract

The present study examined the effect of salicylic acid (SA) pre-treatment on soybean seedlings exposed to cadmium and/or UV-B stress. Dry mass, pigment content, net photosynthetic rate (P), stomatal conductance (g), and transpiration rate (E) were decreased by the Cd and/or UV-B stress. SA alleviated the adverse effects of Cd and/or UV-B on growth, pigment content, PN, and gs, but did not mitigate the inhibitory effect of Cd/UV-B on E, or that of Cd on chlorophyll fluorescence parameters. Cd and/or UV-B induced oxidative stress and increased lipid peroxidation that was significantly decreased by SA pre-treatment. The Cd and/or UV-B increased superoxide dismutase (SOD) activity, decreased peroxidase (POD) activity, and catalase (CAT) activity was mostly unaltered. SA might act as one of the potential antioxidants as well as a stabilizer of membrane integrity to improve plant resistance to the Cd and/or UV-B stress.

Subjects

SALICYLIC acid; PHYSIOLOGICAL effects of cadmium; ULTRAVIOLET radiation; EFFECT of stress on plants; SEEDS; SOYBEAN; SEEDLINGS; PHOTOSYNTHESIS

Publication

Biologia Plantarum, 2014, Vol 58, Issue 1, p195

ISSN

0006-3134

Publication type

Academic Journal

DOI

10.1007/s10535-013-0375-4