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PMID: 11114883 Published · ppublish English Journal Article Research Support, U.S. Gov't, P.H.S.

A novel two-component hybrid molecule regulates vascular morphogenesis of the Arabidopsis root.

Genes & development ·Vol. 14 ·No. 23 ·2000-12-01 ·Pages 2938-43

Mähönen AP, Bonke M, Kauppinen L, Riikonen M, Benfey PN, Helariutta Y

Abstract

The developmental ontogeny of the vascular system (consisting of xylem, phloem and [pro]cambium) is poorly understood despite its central role in plant physiology. We show that in the Arabidopsis root meristem, xylem cell lineages are specified early, whereas phloem and procambium are established through a set of asymmetric cell divisions. These divisions require the WOODEN LEG (WOL) gene. The WOL gene encodes a novel two-component signal transducer with an unusual tandem arrangement of two receiver domains. It is expressed specifically in the vasculature from the early stages of embryogenesis on, consistent with a role as a sensor for vascular morphogenesis.

MeSH Terms
Amino Acid Sequence Arabidopsis/enzymology,genetics,growth & development,metabolism Base Sequence Cell Division DNA, Plant Histidine Kinase Molecular Sequence Data Morphogenesis Plant Roots/growth & development Protein Kinases/genetics,metabolism,physiology
Chemicals
DNA, Plant Protein Kinases Histidine Kinase
Authors & Affiliations
6 authors, click to expand affiliations / ORCID
Mähönen A P
Plant Molecular Biology Laboratory, Institute of Biotechnology, POB 56, FIN-00014 University of Helsinki, Finland.
Bonke M
Kauppinen L
Riikonen M
Benfey P N
Helariutta Y
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Article Info
Journal
Genes & development
Abbr.
Genes Dev
ISSN
0890-9369
DOI
10.1101/gad.189200
Published
2000-12-01
Pages
2938-43
Language
English
Region
United States
NLM ID
8711660
PMCID
PMC317089
Subset
IM
Grants
NIGMS NIH HHS · R01 GM043778 · United States
NIGMS NIH HHS · GM43778 · United States
Databases
GENBANK
AA586219, AB011485, AC004557, AC007069, AI992824, AJ234550, AJ278528, AJ278529, AJ278530, T20648, U42597
External Links
PubMed source DOI: 10.1101/gad.189200 PMC Full Text View journal details
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