| Temperature-dependent changes of cell shape during heterophyllous leaf formation in Ludwigia arcuata (Onagraceae). | |
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MedLine Citation:
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PMID: 18309514 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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Although elongation of epidermal cells in submerged leaves is thought to be a common feature of heterophyllous aquatic plants, such elongation has not been observed in Ludwigia arcuata Walt. (Onagraceae). In this study we found that reduced culture temperature induced the elongation of epidermal cells of submerged leaves in L. arcuata. Since such submerged leaves also showed a reduction in the number of epidermal cells aligned across the leaf transverse axis, these data indicate that heterophyllous leaf formation in L. arcuata is partially temperature sensitive, i.e., the elongation of epidermal cells was temperature sensitive while the reduction in the number of epidermal cells did not show such temperature sensitivity. To clarify the mechanisms that cause such temperature sensitivity, we examined the effects of ethylene, which induced the formation of submerged-type leaves on aerial shoots at the relatively high culture-temperature of 28 degrees C. At 23 degrees C, ethylene induced both cell elongation and reduction in the number of epidermal cells across the leaf transverse axis, while cell elongation was not observed at 28 degrees C. Moreover, both submergence and ethylene treatment induced a change in the arrangement of cortical microtubules (MTs) in epidermal cells of developing leaves at 23 degrees C. Such changes in the arrangement of MTs was not induced at 28 degrees C. Factors involved in the temperature-sensitive response to ethylene would be critical for temperature-sensitive heterophyllous leaf formation in L. arcuata. |
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Authors:
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Masashi Sato; Maki Tsutsumi; Akane Ohtsubo; Kanae Nishii; Asuka Kuwabara; Toshiyuki Nagata |
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Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't Date: 2008-02-29 |
Journal Detail:
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Title: Planta Volume: 228 ISSN: 0032-0935 ISO Abbreviation: Planta Publication Date: 2008 Jun |
Date Detail:
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Created Date: 2008-05-20 Completed Date: 2008-12-10 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 1250576 Medline TA: Planta Country: Germany |
Other Details:
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Languages: eng Pagination: 27-36 Citation Subset: IM |
Affiliation:
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Department of Biological Sciences, Graduate School of Science, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-0033, Japan. |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Cell Shape
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drug effects Ethylenes / pharmacology Microtubules / metabolism Onagraceae / cytology*, drug effects, metabolism Plant Leaves / cytology*, drug effects, metabolism Temperature* |
| Chemical | |
Reg. No./Substance:
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0/Ethylenes; 74-85-1/ethylene |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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