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《Journal of China Agricultural University》 2005-05
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Relationship between abscisic acid and ethylene in seed and pericarp during tomato ripening

Ruan Ying,Sheng Jiping,Liu Kailang,Shen Lin(College of Food Science and Nutritional Engineering,China Agricultural University,Beijing 100083,China)  
Endogenous abscisic acid(ABA) content,ethylene production,ACC content,activities of ACC oxidase were measured during ripening process of tomato fruit(Lycopersicon esculentum Mill.cv.Zhongza 101).Although the maximums of ABA content,ACC content and ethylene climacteric peak occurred at different ripening stages,they all increased in seeds before they increased in pericarp tissues.The maximum ABA and ACC contents preceded ethylene production in both the seeds and pericarp.Changes of the activity of ACC oxidase were coincident with that of ethylene production and ABA content.Exogenous ABA treatment increased of ABA content,both in pericarp and seed,and ethylene production,while treatment with fluridone,an inhibitor of ABA synthesis,inhibited them.The results suggest that seeds may impact the process of postharvest tomato fruit ripening by regulating of endogenous ABA content and ethylene production,and ABA regulates fruit ripening by triggering ethylene production.
【Fund】: 国家自然科学基金资助项目(30200191);; 国家“十五”攻关资助项目(2001BA501A109)
【CateGory Index】: S641.2
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