Three-dimensional formation of corolla shapes in relation to the developmental distortion of petals in Eustoma grandiflorum
Three-dimensional formation of corolla shapes in relation to the developmental distortion of petals in Eustoma grandiflorum
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DOI：
10.1016/j.scienta.2011.09.034
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发表时间：
2011-12-05
影响因子：
4.3
通讯作者：
Yokoo, Mihoshi
中科院分区：
文献类型：
--
作者：
Kawabata, Saneyuki;Nii, Kaeko;Yokoo, Mihoshi
以5个不同花冠形状的洋桔梗品种为材料，研究了花瓣生长方式与花冠三维形状形成的关系。在花瓣的远侧区域表现出向外弯曲的品种在花开放的后期表现出快速的远侧花瓣加宽，而杯形品种在花发育的早期表现出快速加宽的花瓣的基部至中部区域。在漏斗形的品种，没有明显的曲率，没有区域差异，花瓣扩展被发现。花瓣远端加宽不是由于细胞加宽，但在宽度和长度的花瓣细胞的快速扩展的结果，而基部扩展部分是由于细胞加宽。结果表明，花瓣内细胞的不均匀膨胀是导致花瓣变形的主要原因。大花(C)2011 Elsevier B.V.保留所有权利。
Associations between petal growth patterns and the formation of three-dimensional corolla shapes were investigated using five cultivars of Eustoma grandiflorum with different corolla shapes. The cultivars showing outward curvature in the distal regions of petals exhibited rapid distal petal widening during the later stages of flower opening, whereas the cup-shaped cultivars exhibited rapid widening in the basal to middle regions of petals during earlier stages of flower development. In a funnel-shaped cultivar showing no apparent curvature, no regional differences in petal expansion were found. Distal petal widening was not due to cell widening but was the result of the rapid expansion both in width and length of petal cells, whereas basal expansion was partly due to cell widening. The data obtained suggested that non-uniform cell expansion within a petal resulted in petal distortion, and this played a central role in corolla curvature of E. grandiflorum. (C) 2011 Elsevier B.V. All rights reserved.