Plant hormone ‘switch’ unravels chromatin to form flowers, biologists find

13 octubre 2015

A hormone-mediated ‘chromatin switch’ has been identified that directs a plant to form flowers. In the absence of auxin, genes that initiate flower formation are tucked away in tangled chromatin, a tightly packed bundle of DNA. But, in the hormone’s presence, proteins are recruited to unravel chromatin and make the genes responsible for flower formation more accessible.