ABERRANT PANICLE ORGANIZATION 1 temporally regulates meristem identity in rice
ABERRANT PANICLE ORGANIZATION 1 temporally regulates meristem identity in rice
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DOI：
10.1016/j.ydbio.2005.03.016
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发表时间：
2005-06-15
影响因子：
2.7
通讯作者：
Nagato, Y
中科院分区：
文献类型：
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作者：
Ikeda, K;Nagasawa, N;Nagato, Y
我们报告了一个隐性突变的水稻，异常穗组织I（apo 1），这严重影响花序结构，花器官的身份，和产叶率。在野生型花序中，主轴分生组织在形成10-12个初级分支原基后败育。而apo 1在产生少量分支原基后，主轴分生组织转变为小穗分生组织。此外，apo 1的分支分生组织比野生型早分化为小穗分生组织。因此，在花序中，apo 1突变导致了分生组织身份的早熟转换。在apo 1花中，浆片的增加是以牺牲雄蕊为代价的，并且心皮由于分生组织决定性的丧失而不确定地形成。营养体发育也受到apo 1的影响。在整个营养生长期迅速形成叶片，表明APO 1也参与了叶片产生的时间调节。这些表型表明APO 1在营养和生殖发育的时间调节中起着重要作用。(c)2005年爱思唯尔公司All rights reserved.
We report a recessive mutation of rice, aberrant panicle organization I (apo1), which severely affects inflorescence architecture, floral organ identity, and leaf production rate. In the wild-type inflorescence, the main-axis meristem aborts after forming 10-12 primary branch primordia. However, in apo1, the main-axis meristem was converted to a spikelet meristem after producing a small number of branch primordia. In addition, the branch meristems in apo1 became spikelet meristems earlier than in wild type. Therefore, in the inflorescence, the apo1 mutation caused the precocious conversion of the meristem identity. In the apo1 flower, lodicules were increased at the expense of stamens, and carpels were formed indeterminately by the loss of meristem determinacy. Vegetative development is also affected in the apo1. Leaves were formed rapidly throughout the vegetative phase, indicating that APO1 is also involved in temporal regulation of leaf production. These phenotypes suggest that the APO1 plays an important role in the temporal regulation of both vegetative and reproductive development. (c) 2005 Elsevier Inc. All rights reserved.