| Preliminary study on a gravity-insensitive rice mutant |
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| 作者姓名： | 金静 朱诚 张红心 孙宗修 |
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| 基金项目： | Project supported by the National Basic Research Program (973)(No. G1999011600) and Prophase Special Program of National Basic Research Priorities Program (No. 2001CCA0800)，China |
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| 摘 要： | INTRODUCTION The most obvious manifestation of gravitys effect on plants is the downward bending of roots and the upward growth of shoots. Gravity is an important factor in plant development (Barlow, 1995). The starch-statolith hypothesis proposed by Haberlandt and Nmec (Audus, 1962) is the most widely accepted view of how plants perceive gravity. Physiological data suggested that the amyloplast containing starch granules act as the statolith in higher plants. Sedimented amyloplasts ar…
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Preliminary study on a gravity-insensitive rice mutant |
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| JIN Jing ,ZHU Cheng ,ZHANG Hong-xin,SUN Zong-xiu.Preliminary study on a gravity-insensitive rice mutant[J].Journal of Zhejiang University Science,2004(2). |
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| Authors: | JIN Jing ZHU Cheng ZHANG Hong-xin SUN Zong-xiu |
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| Institution: | JIN Jing )1,2,ZHU Cheng 1,ZHANG Hong-xin,SUN Zong-xiu |
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| Abstract: | A gravity-insensitive mutant was isolated from rice (Oryza sativa L. cv. Zhonghua 11) transformed by Agro-bacterium tumefaciens. The mutants shoot growth (prostrate growth) was insensitive to gravity; whereas root growth dis-played a normal positive gravitropism. Histological observation of root caps and leaf sheaths indicated that there was no significant difference in the number and size of amyloplasts in cells of the mutant and cells of the wild type. |
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| Keywords: | Oryza sativa L Gravity-insensitive mutant Gravitropism Amyloplast |
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