RRC ID 15333
著者 Bryan AC, Obaidi A, Wierzba M, Tax FE.
タイトル XYLEM INTERMIXED WITH PHLOEM1, a leucine-rich repeat receptor-like kinase required for stem growth and vascular development in Arabidopsis thaliana.
ジャーナル Planta
Abstract The regulation of cell specification in plants is particularly important in vascular development. The vascular system is comprised two differentiated tissue types, the xylem and phloem, which form conductive elements for the transport of water, nutrients and signaling molecules. A meristematic layer, the procambium, is located between these two differentiated cell types and divides to initiate vascular growth. We report the identification of a receptor-like kinase (RLK) that is expressed in the vasculature. Histochemical analyses of mutants in this kinase display an aberrant accumulation of highly lignified cells, typical of xylem or fiber cells, within the phloem. In addition, phloem cells are sometimes located adjacent to xylem cells in these mutants. We, therefore, named this RLK XYLEM INTERMIXED WITH PHLOEM 1 (XIP1). Analyses of longitudinal profiles of xip1 mutant stems show malformed cell files, indicating defects in oriented cell divisions or cell morphology. We propose that XIP1 prevents ectopic lignification in phloem cells and is necessary to maintain the organization of cell files or cell morphology in conductive elements.
巻・号 235(1)
ページ 111-22
公開日 2012-1-1
DOI 10.1007/s00425-011-1489-6
PMID 21853254
MeSH Arabidopsis / genetics Arabidopsis / growth & development* Arabidopsis / metabolism Cell Division / physiology Genetic Variation Genotype Leucine / genetics Leucine / metabolism Phloem / cytology Phloem / genetics Phloem / growth & development* Plant Growth Regulators / metabolism Plant Proteins / genetics Plant Proteins / metabolism Plant Proteins / physiology* Plant Stems / genetics Plant Stems / growth & development Plant Stems / metabolism Protein Kinases / metabolism Receptors, Amino Acid / metabolism* Xylem / cytology Xylem / genetics Xylem / growth & development*
IF 3.39
引用数 39
WOS 分野 PLANT SCIENCES
リソース情報
シロイヌナズナ / 植物培養細胞・遺伝子 pst11057