Underwater Photosynthesis and Internal Aeration of Submerged Terrestrial Wetland Plants

Abstract

Submergence impedes plant gas exchange with the environment. Survival depends upon internal aeration to provide O2 throughout the plant body, although short-term anoxia can be tolerated. During nights, plants rely on O2 entry from the floodwater and pO2 in roots declines so that some tissues become severely hypoxic or even anoxic. Underwater photosynthesis… (More)

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