Analysis of grain characters in temperate grasses reveals distinctive patterns of endosperm organization associated with grain shape.
Analysis of grain characters in temperate grasses reveals distinctive patterns of endosperm organization associated with grain shape.
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DOI：
10.1093/jxb/ers281
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发表时间：
2012-10
影响因子：
6.9
通讯作者：
Drea S
中科院分区：
文献类型：
--
作者：
Hands P;Kourmpetli S;Sharples D;Harris RG;Drea S
核心类群的成员代表了温带地区最重要的作物，包括小麦、大麦和燕麦。它们作为作物的重要性主要是由于谷物，特别是胚乳的储存能力。在这项研究中，在整个核心pooids的野生和栽培物种的代表的籽粒形态和胚乳组织进行了全面的调查。作为姐妹的核心pooid部落Poeae，Aveneae，Triticeae，和Bromeae在Pooideae亚科，Brachypodium提供了一个分类相关的参考点。使用宏观，组织学和分子分析，在这些物种中的粮食组织组织的不同模式，集中在周边和修改糊粉层，进行了描述。结果表明，糊粉层的组织结构与籽粒形状、淀粉含量等常规品质性状相关。除了形态和组织的变化，候选基因标记的表达模式，支持这种变化进行了检查。通常与谷物相关的特征在很大程度上是通过对小麦族内谱系的分析来定义的，并且由于对小麦和大麦的关注，谷物结构的知识可能会被歪曲。具体而言，数据表明，修饰的糊粉层主要限于小麦族中的物种。
Members of the core pooids represent the most important crops in temperate zones including wheat, barley, and oats. Their importance as crops is largely due to the grain, particularly the storage capabilities of the endosperm. In this study, a comprehensive survey of grain morphology and endosperm organization in representatives of wild and cultivated species throughout the core pooids was performed. As sister to the core pooid tribes Poeae, Aveneae, Triticeae, and Bromeae within the Pooideae subfamily, Brachypodium provides a taxonomically relevant reference point. Using macroscopic, histological, and molecular analyses distinct patterns of grain tissue organization in these species, focusing on the peripheral and modified aleurone, are described. The results indicate that aleurone organization is correlated with conventional grain quality characters such as grain shape and starch content. In addition to morphological and organizational variation, expression patterns of candidate gene markers underpinning this variation were examined. Features commonly associated with grains are largely defined by analyses on lineages within the Triticeae and knowledge of grain structure may be skewed as a result of the focus on wheat and barley. Specifically, the data suggest that the modified aleurone is largely restricted to species in the Triticeae tribe.
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影响因子：
6.9
作者：
Guillon, Fabienne;Bouchet, Brigitte;Saulnier, Luc
通讯作者：
Saulnier, Luc
影响因子：
64.8
作者：
Doebley, J;Stec, A;Hubbard, L
通讯作者：
Hubbard, L
影响因子：
11.6
作者：
Gomez, Elisa;Royo, Joaquin;Hueros, Gregorio
通讯作者：
Hueros, Gregorio
影响因子：
11.6
作者：
Drea, S;Leader, DJ;Doonan, JH
通讯作者：
Doonan, JH
影响因子：
11.4
作者：
HARTINGS, H;MADDALONI, M;THOMPSON, R
通讯作者：
THOMPSON, R