Stimulation by Ethylene of Mitochondrial Development in Wounded Sweet Potato Root Tissue

概要

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Ethylene (about 100 μl Per liter) markedly stimulated increases in respiratory. Cyt c oxidase and succinate dehydrogenase activities of the crude mitochondrial fraction as well as mitochondrial membrane protein during aging of sliced sweet potato root tissue, indicating that it stimulated mitochondrial development in wounded tissue. It had such an effect even when slices were pre-aged in its absence for 1 day and thereafter aged in its presence. The mitochondrial inner membrane from slices aged in ethylene-containing air was denser than that from fresh slices, while the membrane from slices aged in ethylene-free air was lighter. Chloramphenicol completely inhibited the increase in Cyt, c oxidase activity whether slices were aged in the presence or absence of ethylene. Cycloheximide did not inhibit the increase in slices aged in ethylene-free air, but did by 50% in those aged in ethylene-containing air.
日本植物生理学会の論文