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本帖最后由 nero1981 于 2012-3-23 10:57 编辑 6 a9 D* g7 b, s1 X& Z8 P
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1 x# M& V8 G4 D1 ]COVER Spring sun lights up signaling pathways. In plants, the UVR8 protein senses ultraviolet-B (UV-B) wavelengths in sunlight, triggering changes in growth and development, including the production of a protective chemical sunscreen. Pyramids of tryptophan rings intrinsic to UVR8 create a built-in light switch; no separate chromophore is required. Understanding how plant growth varies with changes in sunlight becomes more important as we adapt to climate change. See page 1492. Photo: iStockphoto.com6 G' a6 h; c% c! q \2 S
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发表于 2012-3-23 10:57
赞一个~~~
谢谢