| Toward understanding the different function of two types of parenchyma cells in bamboo culms. | |
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MedLine Citation:
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PMID: 11867698 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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The bamboo, woody monocot, has two types of parenchyma cells in the ground tissues of its culm, in contrast to a single type of parenchyma cell in rice, maize and other major crop species. The distribution of cell wall components, including lignin, (1-->3), (1-->4)-beta-D-glucans (MGs), the highly-substituted glucuronoarabinoxylans (hsGAXs) and low-branched xylans (lbXs) in ground parenchyma tissue of Phyllostachys heterocycla var. pubescens culms was studied at various developmental stages using light microscopy (LM), UV-microscopy, transmission electron microscopy (TEM) and immunolabeling techniques. The short parenchyma cell walls were lignified in 2-month-old bamboo culms just as the long parenchyma cell walls were. The lignified regions were confined to the portions in contact with the long parenchyma cell walls, while the walls at the cell corner region never lignified, even in 7-year-old culms. Significant differences were also found in the hemicellulose distribution between the short and long parenchyma cell walls. In bamboo parenchyma tissue, MGs were localized in short parenchyma cell walls and few were found in long parenchyma cell walls in both young and 7-year-old culms. The distribution of hsGAXs was similar to that of MGs in young culms, but they only appeared in the cell corner region of short parenchyma cells in old culms. Low-branched xylans were distributed in the lignified, but not in unlignified parenchyma cell walls. Based on this evidence, the differences of function in both short and long parenchyma cells in a bamboo culm are discussed. |
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Authors:
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Xin-Qiang He; Kiyoshi Suzuki; Shinichi Kitamura; Jin-Xing Lin; Ke-Ming Cui; Takao Itoh |
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Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't |
Journal Detail:
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Title: Plant & cell physiology Volume: 43 ISSN: 0032-0781 ISO Abbreviation: Plant Cell Physiol. Publication Date: 2002 Feb |
Date Detail:
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Created Date: 2002-02-27 Completed Date: 2002-06-20 Revised Date: 2009-11-19 |
Medline Journal Info:
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Nlm Unique ID: 9430925 Medline TA: Plant Cell Physiol Country: Japan |
Other Details:
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Languages: eng Pagination: 186-95 Citation Subset: IM |
Affiliation:
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College of Life Sciences, Peking University, Beijing, 100871 China. |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Cell Wall
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metabolism,
physiology,
ultrastructure Glucans / metabolism* Immunohistochemistry Lignin / metabolism Microscopy, Confocal Microscopy, Electron Plant Structures / cytology, physiology*, ultrastructure Poaceae / cytology, physiology*, ultrastructure Polysaccharides / metabolism Xylans / metabolism beta-Glucans* |
| Chemical | |
Reg. No./Substance:
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0/Glucans; 0/Polysaccharides; 0/Xylans; 0/beta-Glucans; 0/glucuronoarabinoxylan; 55965-23-6/beta-glucan, (1-3)(1-4)-; 8024-50-8/hemicellulose; 9005-53-2/Lignin |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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