叶子总是正向光性的。
推测稻根负向光性的光受体可能为蓝光受体。
It suggested that the blue light receptor might be the photoreceptor for the negative phototropism in rice root.
所利用的生物体主要包括：化学转化细菌、向光性细菌和藻类。
The microorganisms employed include mainly chemical conversion bacteria , phototropic bacteria and alga .
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