PMID- 15141070 OWN - NLM STAT- MEDLINE DCOM- 20041014 LR - 20181113 IS - 0032-0889 (Print) IS - 1532-2548 (Electronic) IS - 0032-0889 (Linking) VI - 135 IP - 1 DP - 2004 May TI - The dominant mutant Wavy auricle in blade1 disrupts patterning in a lateral domain of the maize leaf. PG - 300-8 AB - Mature maize leaves have defined cell types along the proximal distal and medial lateral axes. The patterning events that establish these axes take place early in leaf initiation. We have identified a new dominant mutation, Wavy auricle in blade1 (Wab1), which affects patterning in both axes in a dose-dependent manner. Wab1 leaves are narrower than normal leaves and displace proximal tissues distally. We show that the proximal distal patterning defects are not due to misexpression of knox genes. Genetic analyses suggest that the action of dominant Wab1 alleles is localized to a lateral domain of the leaf, located between the midvein and the marginal domain that is determined by narrow sheath function. Thus, Wab1 defines a knox-independent pathway that affects specification of the proximal distal axis of the maize leaf. We suggest that failure to elaborate a normal lateral domain in the Wab1 leaf is responsible for disrupting patterning of the proximal distal axis. FAU - Hay, Angela AU - Hay A AD - Plant and Microbial Biology Department, University of California, Berkeley, California 94720, USA. FAU - Hake, Sarah AU - Hake S LA - eng PT - Journal Article PT - Research Support, U.S. Gov't, Non-P.H.S. PL - United States TA - Plant Physiol JT - Plant physiology JID - 0401224 RN - 0 (Homeodomain Proteins) RN - 0 (Knox4 protein, Zea mays) RN - 0 (Plant Proteins) SB - IM MH - Alleles MH - Genes, Dominant/genetics MH - Homeodomain Proteins/genetics/metabolism MH - Meristem/genetics/*growth & development/ultrastructure MH - Microscopy, Electron, Scanning MH - Mutation MH - Phenotype MH - Plant Leaves/genetics/*growth & development/ultrastructure MH - Plant Proteins/genetics/*metabolism MH - Plants, Genetically Modified MH - Zea mays/genetics/*growth & development/ultrastructure PMC - PMC429379 EDAT- 2004/05/14 05:00 MHDA- 2004/10/16 09:00 PMCR- 2005/05/01 CRDT- 2004/05/14 05:00 PHST- 2004/05/14 05:00 [pubmed] PHST- 2004/10/16 09:00 [medline] PHST- 2004/05/14 05:00 [entrez] PHST- 2005/05/01 00:00 [pmc-release] AID - 135/1/300 [pii] AID - 036707 [pii] AID - 10.1104/pp.103.036707 [doi] PST - ppublish SO - Plant Physiol. 2004 May;135(1):300-8. doi: 10.1104/pp.103.036707.