Corn hybrids display lower metabolite variability and complex metabolite inheritance patterns
Corn hybrids display lower metabolite variability and complex metabolite inheritance patterns
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DOI：
10.1111/j.1365-313x.2011.04689.x
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发表时间：
2011-10-01
期刊：
影响因子：
7.2
通讯作者：
Willmitzer, Lothar
中科院分区：
文献类型：
--
作者：
Lisec, Jan;Roemisch-Margl, Lilla;Willmitzer, Lothar
对具有鲜重杂种优势的6个玉米自交系及其相应的14个杂交种的根系代谢组进行了比较分析。我们证明，代谢谱不仅表现出不同的功能，为每个杂交系相比，其亲本系，但也单独的互惠杂种。重建的代谢网络，代谢谱之间的强大的相关性的基础上，显示出较高的网络密度在大多数杂交种相比，相应的自交系。关于代谢物水平遗传，观察到加性、显性和超显性模式，没有具体的过度表现。尽管观察到的遗传模式的复杂性，大多数代谢物的方差在所有14个杂交种中观察到的是低于近交系。从平均水平的杂交种的代谢物水平的偏差与生物量，这可以应用于开发预测的混合动力性能的基础上的特征的代谢物模式呈负相关。
We conducted a comparative analysis of the root metabolome of six parental maize inbred lines and their 14 corresponding hybrids showing fresh weight heterosis. We demonstrated that the metabolic profiles not only exhibit distinct features for each hybrid line compared with its parental lines, but also separate reciprocal hybrids. Reconstructed metabolic networks, based on robust correlations between metabolic profiles, display a higher network density in most hybrids as compared with the corresponding inbred lines. With respect to metabolite level inheritance, additive, dominant and overdominant patterns are observed with no specific overrepresentation. Despite the observed complexity of the inheritance pattern, for the majority of metabolites the variance observed in all 14 hybrids is lower compared with inbred lines. Deviations of metabolite levels from the average levels of the hybrids correlate negatively with biomass, which could be applied for developing predictors of hybrid performance based on characteristics of metabolite patterns.