The interaction of knotted1 and thick tassel dwarf1 in vegetative and reproductive meristems of maize.
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.
Lunde
China
C
Plant Gene Expression Center, University of California, Berkeley, California 94720, USA.
Hake
Sarah
S
D004843:Epistasis, Genetic / Q000502:physiology*; D018506:Gene Expression Regulation, Plant; D017343:Genes, Plant; D018398:Homeodomain Proteins / Q000235:genetics*; D018519:Meristem / Q000235:genetics / Q000254:growth & development*; D010641:Phenotype; D018515:Plant Leaves / Q000235:genetics / Q000254:growth & development; D010940:Plant Proteins / Q000235:genetics*; D018520:Plant Shoots / Q000235:genetics / Q000254:growth & development; D030821:Plants, Genetically Modified; D012098:Reproduction / Q000235:genetics; D003313:Zea mays / Q000235:genetics* / Q000254:growth & development* / Q000502:physiology
D018398:Homeodomain Proteins; C095848:Kn1 protein, plant; D010940:Plant Proteins