Every spring, avocado trees perform a fascinating dance by changing the sex of their flowers daily. This unique reproductive strategy, first noted by botanist A. B. Stout in 1927, involves A-type trees starting with female flowers in the morning and switching to male by the next afternoon, while B-types do the opposite. Recent research led by Jeffrey Groh at the University of California, Berkeley, has identified a specific gene responsible for this sex-swapping behavior. This gene activates other genes to help the flowers open and close in sync, aiding reproduction. The study highlights the evolutionary history of this trait, suggesting it developed around 40 million years ago. This discovery not only sheds light on avocado reproduction but also showcases the power of genetics in understanding plant evolution.
QUESTION: Why do you think it is important for scientists to study the reproductive strategies of plants like avocados?
Avocado flowers switch sex daily—now we know why
