Plant Physiology: Lecture 17: Ethylene: A Gaseous Hormone

In this lecture, I discuss the first gaseous hormone discovered. I cover the biosynthesis, hormone signaling pathways and actions of ethylene in plants. Ethylene is very impactful on plants, from fruit ripening to senescence. It is involved in many stress responses and biological defenses. It is a very important hormone, one that the horticultural industry pays close attention to.