番茄果实发育过程中正常果实与 rin 非成熟突变体的水分渗透性。
Water Permeability during Tomato Fruit Development in Normal and rin Nonripening Mutant.
机构信息
Department of Horticulture, Purdue University, West Lafayette, Indiana 47907.
出版信息
Plant Physiol. 1975 Dec;56(6):813-5. doi: 10.1104/pp.56.6.813.
This work tested one aspect of the relations between membrane permeability and fruit ripening. Membrane permeability was measured as [(3)H]water efflux rate from preloaded fruit pericarp disks. Different stages of fruit development were compared between two tomato (Lycopersicon esculentum Mill) strains: the normal Rutgers and the isogenic nonripening rin strain. The first significant increase in permeability was measured in Rutgers tissue at 110% of development, after fruit ripening had already begun as indicated by ethylene and CO(2) evolution and lycopene synthesis. The rin did not show any increase in tissue permeability during fruit development or maturation.Our results do not support the idea that the first event of the ripening process is an increase in membrane permeability. Nevertheless, the nonripening mutant fails to show the normal increase in permeability.
本工作测试了膜通透性与果实成熟之间关系的一个方面。以 [(3)H]水从小番茄（Lycopersicon esculentum Mill）果皮组织中流出的速率来测量膜通透性。将两个番茄（Lycopersicon esculentum Mill）品种进行比较：正常的 Rutgers 品种和同基因的不转色 rin 品种。在乙烯和二氧化碳释放以及番茄红素合成表明果实已经开始成熟后，Rutgers 组织的通透性在 110%的发育阶段出现了第一次显著增加。在 rin 组织中，在果实发育或成熟过程中，组织的通透性没有增加。我们的结果不支持成熟过程的第一个事件是膜通透性增加的观点。然而，这个不转色的突变体未能表现出正常的通透性增加。
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