Effect of 24-epibrassinolide on drought stress-induced changes in Chorispora bungeana

Y. H. Li; Y. J. Liu; X. L. Xu; M. Jin; L. Z. An; H. Zhang

doi:10.1007/s10535-012-0041-2

Biologia Plantarum (Mar 2012)

Effect of 24-epibrassinolide on drought stress-induced changes in Chorispora bungeana

Y. H. Li,
Y. J. Liu,
X. L. Xu,
M. Jin,
L. Z. An,
H. Zhang

Affiliations

Y. H. Li: Key Laboratory of Arid and Pasture Agroecology of Ministry of Education, School of Life Sciences, Lanzhou University, Lanzhou, Gansu, P.R. China
Y. J. Liu: Key Laboratory of Arid and Pasture Agroecology of Ministry of Education, School of Life Sciences, Lanzhou University, Lanzhou, Gansu, P.R. China
X. L. Xu: Key Laboratory of Arid and Pasture Agroecology of Ministry of Education, School of Life Sciences, Lanzhou University, Lanzhou, Gansu, P.R. China
M. Jin: Key Laboratory of Arid and Pasture Agroecology of Ministry of Education, School of Life Sciences, Lanzhou University, Lanzhou, Gansu, P.R. China
L. Z. An: Key Laboratory of Arid and Pasture Agroecology of Ministry of Education, School of Life Sciences, Lanzhou University, Lanzhou, Gansu, P.R. China
H. Zhang: Key Laboratory of Arid and Pasture Agroecology of Ministry of Education, School of Life Sciences, Lanzhou University, Lanzhou, Gansu, P.R. China

DOI: https://doi.org/10.1007/s10535-012-0041-2
Journal volume & issue: Vol. 56, no. 1
pp. 192 – 196

Abstract

Read online

Brassinosteroids (BRs) have been proposed to increase the resistance of plants to drought stress. The effect of foliar application of 0.1 μM 24-epibrassinolide (EBR) on chlorophyll (Chl) content, photosystem 2 (PS 2) photochemistry, membrane permeability, lipid peroxidation, relative water content (RWC), proline content, and the antioxidant system in drought-stressed Chorispora bungeana plants was investigated. The results showed that polyethylene glycol (PEG) induced water stress decreased RWC, Chl content and variable to maximum Chl fluorescence ratio (Fv/Fm) less in plants pretreated with EBR than in non-pretreated plants. In addition, lipid peroxidation, measured in terms of malondialdehyde content, membrane permeability and proline content in drought-stressed plants were less increased in EBR pretreated plants, while antioxidative enzyme activities and reduced ascorbate and glutathione contents were more increased in EBR pretreated than in non-pretreated plants. These results suggested that EBR could improve plant growth under drought stress

Published in Biologia Plantarum

ISSN: 1573-8264 (Online)
Publisher: Institute of Experimental Botany of the Czech Academy of Sciences
Country of publisher: Czechia
LCC subjects: Science: Biology (General); Science: Botany: Plant ecology
Website: https://bp.ueb.cas.cz/

About the journal

Abstract

Keywords