Cytological Mechanisms of Leaf Rolling in Rice

文献类型： 外文期刊

第一作者： Zou, Liangping

作者： Zou, Liangping;Qi, Dengfeng;Peng, Ming;Zhang, Zhiguo;Lu, Tiegang

作者机构：

期刊名称：CROP SCIENCE （ 影响因子：2.319； 五年影响因子：2.631 ）

ISSN： 0011-183X

年卷期： 2014 年 54 卷 1 期

页码：

收录情况： SCI

摘要： Moderate leaf rolling, which probably results from changes of various cells that constitute leaf blades, is an important trait for rice (Oryza sativa L.) breeding. To elucidate the cytological mechanism of leaf rolling, 46 stable mutants with inward (adaxial) or outward (abaxial) rolling phenotypes were obtained from more than 100,000 transfer DNA insertion lines in rice. Histological analyses of those mutants show that changes of number, size, and pattern of bulliform cells, sclerenchyma cells, parenchyma cells, and mesophyll cells as well as vascular bundles could lead to leaf rolling. Here, eight groups have been categorized according to their cytological characteristics in these mutants: increased bulliform cell number and area, decreased bulliform cell number and area, disordered bulliform cell number and area, partial sclerenchyma cell absence, phloem expansion, increased number of parenchyma cells, changes in multiple cell types, and parenchyma-like cells from partial mesophyll cells. Our study demonstrates that changes in each individual cell type can result in rolled-leaf formation.

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