Localization of cells containing sedimented amyloplasts in the shoots of normal and lazy rice seedlings.
Localization of cells containing sedimented amyloplasts in the shoots of normal and lazy rice seedlings.
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DOI：
10.2187/bss.8.221
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发表时间：
1994-12-01
期刊：
影响因子：
--
通讯作者：
Suge, H
中科院分区：
文献类型：
--
作者：
Abe, K;Takahashi, H;Suge, H
我们研究了正常和懒惰的水稻幼苗芽中含有沉积淀粉体的细胞（假定的平衡细胞）的定位及其与重力反应位点的关系。正常水稻幼苗地上部的中胚轴、胚芽鞘和叶鞘基部都具有平衡细胞。这是首次表明水稻幼苗中胚轴通过自身细胞感受重力诱导向重力弯曲。在懒惰，Kamenoo，虽然芽失去了他们的gravitropic响应随着年龄的增长，沉积的淀粉体本身可能不会归因于agravitropic增长的芽，因为，包括那些叶鞘基地已经失去了他们的重力反应，沉积的淀粉体似乎是相同的正常Kamenoo和年轻的幼苗懒惰，Kamenoo的gravitropism仍然是明显的。
We have examined the localization of the cells containing sedimented amyloplasts (putative statocytes) and its relation to the graviresponding sites in the shoots of normal and lazy rice seedlings. All graviresponsive organs of the shoots of normal rice seedlings, the mesocotyl, the coleoptile and the leaf-sheath base, were found to possess the statocytes. This is the first indication that mesocotyl senses gravity by its own cells in inducing gravitropic bending in rice seedlings. In lazy-Kamenoo, although the shoots lost their gravitropic response with the advance of age, sedimentation of amyloplasts itself might not be attributable to the agravitropic growth of the shoots, because, including those of the leaf-sheath bases that had lost their response to gravity, sedimented amyloplasts appeared to be identical to those of normal Kamenoo and of younger seedlings of lazy-Kamenoo whose gravitropism is still apparent.