玉米营养和生殖分生组织中knotted1与粗穗矮化1的相互作用
The interaction of knotted1 and thick tassel dwarf1 in vegetative and reproductive meristems of maize.
作者信息
Lunde China, Hake Sarah
机构信息
Plant Gene Expression Center, University of California, Berkeley, California 94720, USA.
出版信息
Genetics. 2009 Apr;181(4):1693-7. doi: 10.1534/genetics.108.098350. Epub 2009 Jan 19.
Abstract
In Arabidopsis, SHOOT MERISTEMLESS (STM) and CLAVATA1 (CLV1) competitively regulate meristem homeostasis. Here, we explore the interaction of their maize homologs knotted1 (kn1) and thick tassel dwarf1 (td1). kn1 mutants form fewer lateral organs and td1 inflorescences are fasciated with additional floral organs. Double mutants show kn1 epistatic to td1 in seedling and ear development but dose-sensitivity exists later to promote leaf initiation. Thus kn1 and td1 function in a pathway to maintain meristem homeostasis but their products may interact with different partners during development.
摘要
在拟南芥中，无茎分生组织基因（STM）和CLAVATA1基因（CLV1）竞争性地调节分生组织的稳态。在此，我们探究了它们在玉米中的同源基因玉米结瘤1基因（kn1）和粗穗矮化1基因（td1）之间的相互作用。kn1突变体形成的侧生器官较少，而td1突变体的花序因额外的花器官而出现多花现象。双突变体在幼苗和穗发育过程中显示kn1对td1呈上位性，但后期存在剂量敏感性以促进叶片起始。因此，kn1和td1在维持分生组织稳态的途径中发挥作用，但它们的产物在发育过程中可能与不同的伙伴相互作用。
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