Control of ethylene responses during fruit ripening.
Klee H.J., Tieman D.M.
5th International Postharvest Symposium . Volume of Abstract . Verona, Italy 6-11 June 2004, p.76
2004
บทคัดย่อ
Control of ethylene responses during fruit ripening.
Ethylene controls many aspects of plant development as well as response to the environment.In tomato, ethylene is essential for flower senescence, organ abscission, adventitious root initiation and fruit ripening.Ethylene responses are also critical for aspects of biotic and abiotic stress responses.Much of the control of these events occurs at the level of hormone synthesis.We will present recent work on controlling ripening via reduced synthesis.However, it is now apparent that levels of the ethylene receptors are also highlyregulated.The tomato ethylene receptors are encoded by a family of six genes and levels of expression of these genes are spatially and temporally controlled throughout development.Further, a subset of the receptor genes respond to external stimuli.Genetic and biochemical evidence supports a model in which the ethylene receptors act as negative regulators of down