Respiration of Roots. Response to Low O sub 2 Stress. Final Report

摘要

Progress is reported on the following research areas: (1) the germination and growth of rice seedlings in the absence of oxygen has been investigated. It was shown that this growth is not due to a higher tolerance for the accumulating ethanol than that shown by other seedlings; (2) the role of alcohol dehydrogenase in the ability of rice to withstand low oxygen was studied. An inactivator which rapidly attacks the enzyme when the cells are broken was found. The inactivator is associated with an organelle fraction sedimenting in sucrose gradients close to the endoplasmic reticulum. The action of the inactivator, which appears to be a protein, can be prevented by dithiothreitol. (ERA citation 08:054981)