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本帖最后由 nero1981 于 2012-3-23 10:57 编辑
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9 y9 u5 G) ]' ZCOVER 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.com, U1 l; R: v. c1 ~0 s5 A+ D3 b
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发表于 2012-3-23 10:57
赞一个~~~
谢谢