Discussion on Photoreceptor for Negative Phototropism in Rice Roots

摘要/Abstract

摘要： To properly explore the photoreceptor for the negative phototropism in rice (Oryza sativa L.) root, lights with different wavelengths were applied to investigate the effect of light quality on phototropic bending. The phototropic bending could be induced prominently by blue/ultraviolet light, whereas not by red or far-red light. The absorption spectrum of the extracted solution from rice root cap had two peaks at 350 nm and 450 nm, respectively, and the molecular weight of the 120 kD protein in the root cap under unilateral light was larger than that under the dark. It suggested that the blue light receptor might be the photoreceptor for the negative phototropism in rice root.

关键词: rice (Oryza sativa), root, negative phototropism, light quality, photoreceptor

WANG Yue-xia, WANG Zhong, SUO Biao, GU Yun-jie, WANG Hui-hui, CHEN Yong-hui, DAI Yun-xia . Discussion on Photoreceptor for Negative Phototropism in Rice Roots[J]. RICE SCIENCE, 2007, 14(4): 315-318 .

参考文献

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