Search Results - (Author, Cooperation:A. B. Bleecker)

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  1. 1
    T. Xu ; N. Dai ; J. Chen ; S. Nagawa ; M. Cao ; H. Li ; Z. Zhou ; X. Chen ; R. De Rycke ; H. Rakusova ; W. Wang ; A. M. Jones ; J. Friml ; S. E. Patterson ; A. B. Bleecker ; Z. Yang
    American Association for the Advancement of Science (AAAS)
    Published 2014
    Staff View
    Publication Date:
    2014-03-01
    Publisher:
    American Association for the Advancement of Science (AAAS)
    Print ISSN:
    0036-8075
    Electronic ISSN:
    1095-9203
    Topics:
    Biology
    Chemistry and Pharmacology
    Computer Science
    Medicine
    Natural Sciences in General
    Physics
    Keywords:
    Arabidopsis/*enzymology/genetics ; Cell Membrane/*enzymology ; Indoleacetic Acids/*metabolism ; Plant Leaves/enzymology/genetics ; Plant Proteins/*metabolism ; Protein Kinases/genetics/*metabolism ; Receptors, Cell Surface/*metabolism ; Signal Transduction ; rho GTP-Binding Proteins/*metabolism
    Published by:
    Latest Papers from Table of Contents or Articles in Press
  2. 2
    Bleecker, A. B. ; Schuette, J. L. ; Kende, H.
    Springer
    Published 1986
    Staff View
    ISSN:
    1432-2048
    Keywords:
    Cell division ; Cell elongation ; Intercalary meristem ; Meristem (intercalary) ; Oryza (internode growth) ; Submergence
    Source:
    Springer Online Journal Archives 1860-2000
    Topics:
    Biology
    Notes:
    Abstract Submergence of the stem induces rapid internodal elongation in deepwater rice (Oryza sativa L. cv. “Habiganj Aman II”). A comparative anatomical study of internodes isolated from airgrown and partially submerged rice plants was undertaken to localize and characterize regions of growth and differentiation in rice stems. Longitudinal sections were examined by light and scanning-electron microscopy. Based on cell-size analysis, three zones of internodal development were recognized: a zone of cell division and elongation at the base of the internode, designated the intercalary meristem (IM); a zone of cell elongation without concomitant cell division; and a zone of cell differentiation where neither cell division nor elongation occur. The primary effects of submergence on internodal development were a threefold increase in the number of cells per cell file resulting from a decrease in the cell-cycle time from 24 to 7 h within the IM; an expansion of the cell-elongation zone from 5 to 15 mm leading to a threefold greater final cell length; and a suppression of tissue differentiation as indicated by reduced chlorophyll content and a lack of secondary wall formation in xylem and cortical sclerenchyma. These data indicate that growth of deepwater-rice internoes involves a balance between elongation and differentiation of the stem. Submergence shifts this balance in favor of growth.
    Type of Medium:
    Electronic Resource
    URL:
    Articles: DFG German National Licenses