Production of ethylene by injured sweet potato root tissue

概要

論文の詳細を見る
Ethylene production by sweet potato root tissue was examined with special emphasis on tissue injury. The root tissue produced ethylene in response to cut injury. Increasing the cut surface area increased ethylene production, and the amount was proportional to logarithm of the surface area. Tissue discs washed with water before incubation produced less ethylene than unwashed discs. When the tissue was treated with chemicals that might destroy the cells, ethylene production remarkably increased. Monoiodoacetamide, trichloroacetic acid and sodium ethylmercurithiosalicylate were particularly effective in inducing ethylene production. Here, again, ethylene production was related to the degree of injury. Treatment of the tissue with increasing concentrations of these chemicals resulted in increasing ethylene production, but concentrations over a certain limit rather de-creased the ethylene production. This may be due to the rapid destruction of the whole tissue used before ethylene production commenced. For ethylene production, the presence of injured but still living cells was necessary. Relationship of the injury-induced ethylene production to metabolic activation is discussed.
日本植物生理学会の論文