caa a22 4500 445841893 CHVBK 20180317145347.0 cr unu---uuuuu 170323e20111101xx s 000 0 eng 10.1007/s10725-011-9595-9 doi (NATIONALLICENCE)springer-10.1007/s10725-011-9595-9 Ameliorative effect of brassinosteroid and ethylene on germination of cucumber seeds in the presence of sodium chloride [Elektronische Daten] [Baolan Wang, Jinli Zhang, Xiuzhi Xia, Wen-Hao Zhang] Brassinosteroids are a class of plant polyhydroxysteroids with a diverse of functions in plant growth and development, while ethylene is a gaseous hormone involved in regulation of numerous physiological processes. To evaluate the roles of BR and ethylene in seed germination under conditions of salt stress, effects of 24-Epibrassinolide (EBR) and 1-aminocyclopropane-1-carboxylic acid (ACC) on seed germination of cucumber (Cucumis sativus) seeds in the presence of 250mM NaCl were investigated. Seed germination was significantly inhibited by the presence of NaCl in the incubation medium, and the inhibitory effect was significantly alleviated by addition of EBR and ACC to the incubation medium containing NaCl. There was an increase in ethylene evolution during seed germination and this increase was suppressed by salt stress. The reduction in ethylene evolution from imbibed seeds by salt stress was attenuated by EBR. Salt stress inhibited ACC oxidase (ACO) activity and EBR reversed the salt stress-induced decrease in ACO activity. Salt stress reduced expression of gene encoding ACO (CsACO2), and EBR reversed the salt stress-induced down-regulation of CsACO2. The alleviative effect of EBR on seed germination in the presence of NaCl was diminished by antagonist of ethylene synthesis, aminoethoxyvinylglycine. These results indicate that both ethylene and BR are likely to be associated with suppression of seed germination under salt stress and that the mitigating effect of BR on salt stress-induced inhibition of seed germination may occur through its interaction with ethylene synthesis. Springer Science+Business Media B.V., 2011 Salt stress nationallicence Brassinosteroids nationallicence Ethylene nationallicence Seed germination nationallicence Cucumis sativus nationallicence Wang Baolan State Key Laboratory of Vegetation and Environmental Change, Institute of Botany, the Chinese Academy of Sciences, 100093, Beijing, People's Republic of China aut Zhang Jinli State Key Laboratory of Vegetation and Environmental Change, Institute of Botany, the Chinese Academy of Sciences, 100093, Beijing, People's Republic of China aut Xia Xiuzhi State Key Laboratory of Vegetation and Environmental Change, Institute of Botany, the Chinese Academy of Sciences, 100093, Beijing, People's Republic of China aut Zhang Wen-Hao State Key Laboratory of Vegetation and Environmental Change, Institute of Botany, the Chinese Academy of Sciences, 100093, Beijing, People's Republic of China aut Plant Growth Regulation Springer Netherlands 65/2(2011-11-01), 407-413 0167-6903 65:2<407 2011 65 10725 https://doi.org/10.1007/s10725-011-9595-9 text/html Onlinezugriff via DOI 1 brief-communication jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10725-011-9595-9 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Wang Baolan State Key Laboratory of Vegetation and Environmental Change, Institute of Botany, the Chinese Academy of Sciences, 100093, Beijing, People's Republic of China aut NATIONALLICENCE 700 1- Zhang Jinli State Key Laboratory of Vegetation and Environmental Change, Institute of Botany, the Chinese Academy of Sciences, 100093, Beijing, People's Republic of China aut NATIONALLICENCE 700 1- Xia Xiuzhi State Key Laboratory of Vegetation and Environmental Change, Institute of Botany, the Chinese Academy of Sciences, 100093, Beijing, People's Republic of China aut NATIONALLICENCE 700 1- Zhang Wen-Hao State Key Laboratory of Vegetation and Environmental Change, Institute of Botany, the Chinese Academy of Sciences, 100093, Beijing, People's Republic of China aut NATIONALLICENCE 773 0- Plant Growth Regulation Springer Netherlands 65/2(2011-11-01), 407-413 0167-6903 65:2<407 2011 65 10725 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer