caa a22 4500 463171896 CHVBK 20180406164815.0 cr unu---uuuuu 170326e20071201xx s 000 0 eng 10.1007/s00344-007-9013-8 doi (NATIONALLICENCE)springer-10.1007/s00344-007-9013-8 Abscisic Acid and Ethylene Interact in Rice Spikelets in Response to Water Stress During Meiosis [Elektronische Daten] [Jianchang Yang, Jianhua Zhang, Kai Liu, Zhiqin Wang, Lijun Liu] This study investigated whether and how the interaction between abscisic acid (ABA) and ethylene is involved in the regulation of rice (Oryza sativa L.) spikelet sterility when subjected to water stress during meiosis. Two rice cultivars, HA-3 (drought-resistant) and WY-7 (drought-susceptible), were used and subjected to well-watered and water-stressed (WS) treatments during meiosis (15-2 days before heading). Leaf water potentials of both cultivars markedly decreased during the day as a result of the WS treatment, but panicle water potentials remained constant. The percentage of sterile spikelets in WS plants was increased by 49.7% for WJ-7 but only 12.7% for HA-3. ABA, ethylene, and 1-aminocyclopropane-1-carboxylic acid were all enhanced in spikelets by the water stress, but ethylene was enhanced more than ABA in WY-7 when compared with that in HA-3. Spikelet sterility was significantly reduced when ABA or amino-ethoxyvinylglycine, an inhibitor of ethylene synthesis, was applied to the panicles of WS plants at the early meiosis stage. Application of ethephon, an ethylene-releasing agent, or fluridone, an inhibitor of ABA synthesis, had the opposite effect, and sterility was increased. The results suggest that antagonistic interactions between ABA and ethylene may be involved in mediating the effect of water stress on spikelet fertility. A higher ratio of ABA to ethylene would be a physiologic trait of rice adaptation to water stress. Springer Science+Business Media, LLC, 2007 Abscisic acid (ABA) nationallicence 1-Aminocyclopropane-1-carboxylic acid (ACC) nationallicence Drought resistance nationallicence Ethylene nationallicence Meiosis nationallicence Oryza sativa (rice) nationallicence Spikelet sterility nationallicence Water stress nationallicence Yang Jianchang Key Laboratory of Crop Genetics and Physiology of Jiangsu Province, Yangzhou University, Yangzhou, Jiangsu, China aut Zhang Jianhua Department of Biology, Hong Kong Baptist University, Hong Kong, China aut Liu Kai Key Laboratory of Crop Genetics and Physiology of Jiangsu Province, Yangzhou University, Yangzhou, Jiangsu, China aut Wang Zhiqin Key Laboratory of Crop Genetics and Physiology of Jiangsu Province, Yangzhou University, Yangzhou, Jiangsu, China aut Liu Lijun Key Laboratory of Crop Genetics and Physiology of Jiangsu Province, Yangzhou University, Yangzhou, Jiangsu, China aut Journal of Plant Growth Regulation Springer-Verlag 26/4(2007-12-01), 318-328 0721-7595 26:4<318 2007 26 344 https://doi.org/10.1007/s00344-007-9013-8 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s00344-007-9013-8 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Yang Jianchang Key Laboratory of Crop Genetics and Physiology of Jiangsu Province, Yangzhou University, Yangzhou, Jiangsu, China aut NATIONALLICENCE 700 1- Zhang Jianhua Department of Biology, Hong Kong Baptist University, Hong Kong, China aut NATIONALLICENCE 700 1- Liu Kai Key Laboratory of Crop Genetics and Physiology of Jiangsu Province, Yangzhou University, Yangzhou, Jiangsu, China aut NATIONALLICENCE 700 1- Wang Zhiqin Key Laboratory of Crop Genetics and Physiology of Jiangsu Province, Yangzhou University, Yangzhou, Jiangsu, China aut NATIONALLICENCE 700 1- Liu Lijun Key Laboratory of Crop Genetics and Physiology of Jiangsu Province, Yangzhou University, Yangzhou, Jiangsu, China aut NATIONALLICENCE 773 0- Journal of Plant Growth Regulation Springer-Verlag 26/4(2007-12-01), 318-328 0721-7595 26:4<318 2007 26 344 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer