A cell-type-specific defect in border cell formation in the Acacia mangium root cap developing an extraordinary sheath of sloughed-off cells

• Background and Aims Root caps release border cells, which play central roles in microbe interaction and root protection against soil stresses. However, the number and connectivity of border cells differ widely among plant species. Better understanding of key border-cell phenotype across species wi...

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Veröffentlicht in:Annals of botany 2011-08, Vol.108 (2), p.279-290
Hauptverfasser: Endo, Izuki, Tange, Takeshi, Osawa, Hiroki
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container_title Annals of botany
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creator Endo, Izuki
Tange, Takeshi
Osawa, Hiroki
description • Background and Aims Root caps release border cells, which play central roles in microbe interaction and root protection against soil stresses. However, the number and connectivity of border cells differ widely among plant species. Better understanding of key border-cell phenotype across species will help define the total function of border cells and associated genes. • Methods The spatio-temporal detachment of border cells in the leguminous tree Acacia mangium was investigated by using light and fluorescent microscopy with fluorescein diacetate, and their number and structural connectivity compared with that in soybean (Glycine max). • Key Results Border-like cells with a sheet structure peeled bilaterally from the lateral root cap of A. mangium. Hydroponic root elongation partially facilitated acropetal peeling of border-like cells, which accumulate as a sheath that covers the 0-to 4-mm tip within 1 week. Although root elongation under friction caused basipetal peeling, lateral root caps were minimally trimmed as compared with hydroponic roots. In the meantime, A. mangium columella caps simultaneously released single border cells with a number similar to those in soybean. • Conclusions These results suggest that cell type-specific inhibitory factors induce a distinct defective phenotype in single border-cell formation in A. mangium lateral root caps.
doi_str_mv 10.1093/aob/mcr139
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However, the number and connectivity of border cells differ widely among plant species. Better understanding of key border-cell phenotype across species will help define the total function of border cells and associated genes. • Methods The spatio-temporal detachment of border cells in the leguminous tree Acacia mangium was investigated by using light and fluorescent microscopy with fluorescein diacetate, and their number and structural connectivity compared with that in soybean (Glycine max). • Key Results Border-like cells with a sheet structure peeled bilaterally from the lateral root cap of A. mangium. Hydroponic root elongation partially facilitated acropetal peeling of border-like cells, which accumulate as a sheath that covers the 0-to 4-mm tip within 1 week. Although root elongation under friction caused basipetal peeling, lateral root caps were minimally trimmed as compared with hydroponic roots. In the meantime, A. mangium columella caps simultaneously released single border cells with a number similar to those in soybean. • Conclusions These results suggest that cell type-specific inhibitory factors induce a distinct defective phenotype in single border-cell formation in A. mangium lateral root caps.</description><identifier>ISSN: 0305-7364</identifier><identifier>EISSN: 1095-8290</identifier><identifier>DOI: 10.1093/aob/mcr139</identifier><identifier>PMID: 21712296</identifier><language>eng</language><publisher>England: Oxford University Press</publisher><subject>Acacia - cytology ; Acacia - genetics ; Acacia - growth &amp; development ; Borderlands ; Cell Growth Processes - genetics ; Cell Growth Processes - physiology ; Cell Physiological Phenomena ; Cell walls ; Daughter cells ; Glycine max - cytology ; Original ; Plant cells ; Plant Root Cap - cytology ; Plant Root Cap - genetics ; Plant Root Cap - growth &amp; development ; Plant roots ; Plants ; Root cap ; Root growth ; Soybeans ; Woody plants</subject><ispartof>Annals of botany, 2011-08, Vol.108 (2), p.279-290</ispartof><rights>Annals of Botany Company 2011</rights><rights>The Author 2011. 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However, the number and connectivity of border cells differ widely among plant species. Better understanding of key border-cell phenotype across species will help define the total function of border cells and associated genes. • Methods The spatio-temporal detachment of border cells in the leguminous tree Acacia mangium was investigated by using light and fluorescent microscopy with fluorescein diacetate, and their number and structural connectivity compared with that in soybean (Glycine max). • Key Results Border-like cells with a sheet structure peeled bilaterally from the lateral root cap of A. mangium. Hydroponic root elongation partially facilitated acropetal peeling of border-like cells, which accumulate as a sheath that covers the 0-to 4-mm tip within 1 week. Although root elongation under friction caused basipetal peeling, lateral root caps were minimally trimmed as compared with hydroponic roots. 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However, the number and connectivity of border cells differ widely among plant species. Better understanding of key border-cell phenotype across species will help define the total function of border cells and associated genes. • Methods The spatio-temporal detachment of border cells in the leguminous tree Acacia mangium was investigated by using light and fluorescent microscopy with fluorescein diacetate, and their number and structural connectivity compared with that in soybean (Glycine max). • Key Results Border-like cells with a sheet structure peeled bilaterally from the lateral root cap of A. mangium. Hydroponic root elongation partially facilitated acropetal peeling of border-like cells, which accumulate as a sheath that covers the 0-to 4-mm tip within 1 week. Although root elongation under friction caused basipetal peeling, lateral root caps were minimally trimmed as compared with hydroponic roots. 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source MEDLINE; Jstor Complete Legacy; Oxford University Press Journals All Titles (1996-Current); EZB-FREE-00999 freely available EZB journals; PubMed Central
subjects Acacia - cytology
Acacia - genetics
Acacia - growth & development
Borderlands
Cell Growth Processes - genetics
Cell Growth Processes - physiology
Cell Physiological Phenomena
Cell walls
Daughter cells
Glycine max - cytology
Original
Plant cells
Plant Root Cap - cytology
Plant Root Cap - genetics
Plant Root Cap - growth & development
Plant roots
Plants
Root cap
Root growth
Soybeans
Woody plants
title A cell-type-specific defect in border cell formation in the Acacia mangium root cap developing an extraordinary sheath of sloughed-off cells
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