Hochholdinger Frank, Woll Katrin, Sauer Michaela, Dembinsky Diana
Center for Plant Molecular Biology (ZMBP), Eberhard Karls University Tübingen, Auf der Morgenstelle 28, 72076 Tübingen, Germany.
Ann Bot. 2004 Apr;93(4):359-68. doi: 10.1093/aob/mch056. Epub 2004 Feb 23.
Maize (Zea mays) forms a complex root system comprising embryonic and post-embryonic roots. The embryonically formed root system is made up of the primary root and a variable number of seminal roots. Later in development the post-embryonic shoot-borne root system becomes dominant and is responsible together with its lateral roots for the major portion of water and nutrient uptake. Although the anatomical structure of the different root-types is very similar they are initiated from different tissues during embryonic and post-embryonic development. Recently, a number of mutants specifically affected in maize root development have been identified. These mutants indicate that various root-type specific developmental programmes are involved in the establishment of the maize root stock.
This review summarizes these genetic data in the context of the maize root morphology and anatomy and gives an outlook on possible perspectives of the molecular analysis of maize root formation.
玉米（Zea mays）形成一个由胚根和胚后根组成的复杂根系。胚根系统由主根和数量不等的胚根组成。在发育后期，胚后茎生根系占主导地位，其侧根共同负责大部分水分和养分的吸收。尽管不同根类型的解剖结构非常相似，但它们在胚胎发育和胚后发育过程中起源于不同的组织。最近，已鉴定出许多在玉米根系发育中受到特异性影响的突变体。这些突变体表明，各种根类型特异性发育程序参与了玉米根系的形成。
本综述在玉米根形态和解剖学背景下总结了这些遗传数据，并对玉米根形成分子分析的可能前景进行了展望。
