Wednesday, August 26, 2009

Signaling Pathway Ensures That Plants Remember To Flower


Why do some plants blossom even when days are short and gray?

Scientists at the Max Planck Institute for Developmental Biology have found the answer to this question: An endogenous mechanism allows them to flower in the absence of external influences such as long days. A small piece of RNA, a so-called microRNA, has a central role in this process, as a decline of its concentration in the shoot apex triggers flowering.


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