Selective Enhancement of Alternative Path Capacity in Plant Storage Organs in Response to Ethylene Plus Oxygen: A Comparative Study
Year: 1982
Type: article
Abstract: The respiration rise in bulky storage organs induced by ethylene plus pure O(2) is accompanied by an increase in the CN-resistant respiration, or alternative path. Whereas a lesser respiratory stimulation in response to ethylene is demonstrable in air and increased by peeling, ethylene-induced alternative path development depends on the synergistic effect of pure O(2), with or without peeling. The effect of ethylene plus O(2) is evident, whether untreated parent organs yield CN-sensitive or CN-resistant fresh slices. Alternative path capacity and maximal cytochrome oxidase-mediated electron transport have been separately estimated. Ethylene plus O(2) selectively enhances the alternative path. It is proposed that the gross rise in respiration evoked by ethylene is implemented by a system with an O(2) requirement much higher than that of cytochrome oxidase, while the ethylene-induced development of the alternative path depends on a system of still higher O(2) requirement.
Source: PLANT PHYSIOLOGY
DOI: 10.1104/pp.69.5.1036
Authors: Athanasios Theologis, George G. Laties
Institution: University of California, Los Angeles
Language: English
Subfield: Plant Science
Domain: Life Sciences
SDG: Zero hunger
Open Access status: bronze
OpenAlex ID: W2045593591