Koppolu Ravi, Chen Shulin, Schnurbusch Thorsten
Independent HEISENBERG Research Group Plant Architecture, Leibniz Institute of Plant Genetics and Crop Plant Research (IPK), Corrensstr. 3, OT Gatersleben, 06466 Seeland, Germany.
College of Agronomy, Henan Agricultural University, Zhengzhou, 450002, China.
Curr Opin Plant Biol. 2022 Feb;65:102168. doi: 10.1016/j.pbi.2021.102168. Epub 2022 Jan 10.
Grasses are ubiquitous in our daily lives, with gramineous cereal crops such as maize, rice, and wheat constituting a large proportion of our daily staple food intake. Evolutionary forces, especially over the past ∼20 million years, have shaped grass adaptability, inflorescence architecture, and reproductive success. Here, we provide basic information on grass evolution and inflorescence structures mainly related to two inflorescence types: branched panicle- and spike-type inflorescences, the latter of which has highly modified branching. We summarize and compare known genetic pathways underlying each infloresecence type and discuss how the maize RAMOSA, rice ABERRANT PANICLE ORGANIZATION, and Triticeae COMPOSITUM pathways are regulated. Our analyses might lay the foundation for understanding species-specific gene regulatory networks that could result in improved sink capacities.
禾本科植物在我们的日常生活中无处不在，像玉米、水稻和小麦等禾本科谷类作物在我们日常主食摄入量中占很大比例。进化力量，尤其是在过去约2000万年中，塑造了禾本科植物的适应性、花序结构和繁殖成功率。在这里，我们提供了关于禾本科植物进化和花序结构的基本信息，主要涉及两种花序类型：分枝圆锥花序和穗状花序类型，后者具有高度特化的分枝。我们总结并比较了每种花序类型背后已知的遗传途径，并讨论了玉米的RAMOSA、水稻的异常穗器官和小麦族COMPOSITUM途径是如何被调控的。我们的分析可能为理解物种特异性基因调控网络奠定基础，这些网络可能会提高库容量。
