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Discussion on Photoreceptor for Negative Phototropism in Rice Roots

Discussion on Photoreceptor for Negative Phototropism in Rice Roots
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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. 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.
出处 《Rice science》 SCIE 2007年第4期315-318,共4页 水稻科学(英文版)
基金 supported by the National Natural Science Foundation of China(Grant No.30270795) the open foundation of the State Key Laboratory of Plant Physiology and Biochemistry(Grant No.2002001) the Creative Plan of the Science and Technology for Graduate Student in Institute of Jiangsu Province(Grant No.200635).
关键词 rice (Oryza sativa) ROOT negative phototropisrn light quality PHOTORECEPTOR rice (Oryza sativa) root negative phototropisrn light quality photoreceptor
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