A corn plant knows how to find water in soil with the very tips of its roots, but some varieties, including many used for ...

gibberellins and auxins). For the most part, the major signaling components downstream of these receptors are known, identified almost exclusively through Arabidopsis thaliana genetics.

This report presents evidence that the response was not peculiar to the highly phytotoxic 2,4-D, but that a native auxin, indolyl-3-acetic acid, (IAA), also accelerates the release of ethylene.

While auxin was already known to help control this process, ethylene’s involvement was a new discovery. In experiments with thale cress (Arabidopsis thaliana) – a model plant often used in ...