| The role of lateral roots in bypass flow in rice (Oryza sativa L.). | |
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MedLine Citation:
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PMID: 19930130 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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Although an apoplastic pathway (the so-called bypass flow) is implicated in the uptake of Na(+) by rice growing in saline conditions, the point of entry of this flow into roots remains to be elucidated. We investigated the role of lateral roots in bypass flow using the tracer trisodium-8-hydroxy-1,3,6-pyrenetrisulphonic acid (PTS) and the rice cv. IR36. PTS was identified in the vascular tissue of lateral roots using both epifluorescence microscopy and confocal laser scanning microscopy. Cryo-scanning electron microscopy and epifluorescence microscopy of sections stained with berberine-aniline blue revealed that the exodermis is absent in the lateral roots. We conclude that PTS can move freely through the cortical layers of lateral roots, enter the stele and be transported to the shoot via the transpiration stream. |
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Authors:
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Bualuang Faiyue; Mohammed J Al-Azzawi; Timothy J Flowers |
Publication Detail:
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Type: Journal Article Date: 2009-11-17 |
Journal Detail:
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Title: Plant, cell & environment Volume: 33 ISSN: 1365-3040 ISO Abbreviation: Plant Cell Environ. Publication Date: 2010 May |
Date Detail:
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Created Date: 2010-06-03 Completed Date: 2010-08-18 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 9309004 Medline TA: Plant Cell Environ Country: United States |
Other Details:
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Languages: eng Pagination: 702-16 Citation Subset: IM |
Affiliation:
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Department of Biology and Environmental Science, School of Life Sciences, University of Sussex, Brighton BN19QG, UK. B.Faiyue@sussex.ac.uk |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Biological Transport Humidity Microscopy, Confocal Microscopy, Electron, Scanning Microscopy, Fluorescence Oryza sativa / anatomy & histology, physiology* Plant Roots / anatomy & histology*, physiology* Plant Shoots / chemistry Plant Transpiration Polyethylene Glycols / pharmacology Pyrenes / metabolism Silicon / pharmacology Sulfonic Acids / metabolism |
| Chemical | |
Reg. No./Substance:
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0/8-hydroxy-1,3,6-pyrenetrisulfonic acid; 0/Polyethylene Glycols; 0/Pyrenes; 0/Sulfonic Acids; 7440-21-3/Silicon |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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