Getting to the roots of it: Genetic and hormonal control of root architecture.
Getting to the roots of it: Genetic and hormonal control of root architecture.
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DOI：
10.3389/fpls.2013.00186
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发表时间：
2013
影响因子：
5.6
通讯作者：
McCouch S
中科院分区：
文献类型：
--
作者：
Jung JK;McCouch S
根系构型（RSA）是根系的空间构型，是重要的发育和农艺性状，对植物的总体构型、生长速率和产量、非生物胁迫抗性、养分吸收和发育可塑性等都有重要影响。根构型是由内在的，植物介导的途径，与感知和响应外部，环境信号的途径交叉调制。最近开发的几种非侵入性的2D和3D根成像系统，提高了我们的能力，准确地观察和量化复杂的全根系统的建筑特征。再加上目前可用的强大的基于标记的基因分型和测序平台，这些根表型技术有助于大规模的全基因组关联研究，并可以加速识别和表征参与根系发育的基因和途径。这一能力为研究根系构型性状对作物品种在不同环境中的表现的贡献提供了基础。本文综述了我们目前了解的基因和途径参与确定RSA响应内在和外在（环境）的反应途径，并提供了一个简要概述最新的根系表型技术及其潜在的影响，阐明遗传控制的根在植物中的发展。
Root system architecture (RSA) – the spatial configuration of a root system – is an important developmental and agronomic trait, with implications for overall plant architecture, growth rate and yield, abiotic stress resistance, nutrient uptake, and developmental plasticity in response to environmental changes. Root architecture is modulated by intrinsic, hormone-mediated pathways, intersecting with pathways that perceive and respond to external, environmental signals. The recent development of several non-invasive 2D and 3D root imaging systems has enhanced our ability to accurately observe and quantify architectural traits on complex whole-root systems. Coupled with the powerful marker-based genotyping and sequencing platforms currently available, these root phenotyping technologies lend themselves to large-scale genome-wide association studies, and can speed the identification and characterization of the genes and pathways involved in root system development. This capability provides the foundation for examining the contribution of root architectural traits to the performance of crop varieties in diverse environments. This review focuses on our current understanding of the genes and pathways involved in determining RSA in response to both intrinsic and extrinsic (environmental) response pathways, and provides a brief overview of the latest root system phenotyping technologies and their potential impact on elucidating the genetic control of root development in plants.
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