| A new screening technique for salinity resistance in rice (Oryza sativa L.) seedlings using bypass flow. | |
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MedLine Citation:
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PMID: 22171658 Owner: NLM Status: Publisher |
Abstract/OtherAbstract:
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A lack of screening techniques delays progress in research on salinity resistance in rice. In this study, we report our test of the hypothesis that an apoplastic pathway (the so-called bypass flow) causes a difference in salt resistance between rice genotypes and can be used in screening for salinity resistance. Fourteen-day-old seedlings of low- and high-Na(+) -transporting recombinant inbred lines (10 of each) of rice IR55178 were treated with 50 mM NaCl and 0.2 mM trisodium-8-hydroxy-1,3,6-pyrenetrisulphonic acid (PTS), a bypass flow tracer, for short (4 d) and long (90 d) periods of time. The results showed that the average shoot Na(+) concentration and bypass flow for high-Na(+) -transporting lines were 1.4 and 2.4 times higher than those of low-Na(+) -transporting lines, respectively. There was a positive linear correlation between the percentage of bypass flow and Na(+) concentrations in the shoots, suggesting that the difference in Na(+) transport in rice is a consequence of different degrees of bypass flow. Moreover, a high correlation was found between bypass flow and seedling survival after prolonged salt stress: the lower the magnitude of bypass flow, the greater seedling survival. We conclude that bypass flow could be used as a new screening technique for salt resistance in rice. © 2011 Blackwell Publishing Ltd. |
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Authors:
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Bualuang Faiyue; Mohammed J Al-Azzawi; Timothy J Flowers |
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Publication Detail:
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Type: JOURNAL ARTICLE Date: 2011-12-15 |
Journal Detail:
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Title: Plant, cell & environment Volume: - ISSN: 1365-3040 ISO Abbreviation: - Publication Date: 2011 Dec |
Date Detail:
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Created Date: 2011-12-16 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 9309004 Medline TA: Plant Cell Environ Country: - |
Other Details:
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Languages: ENG Pagination: - Citation Subset: - |
Copyright Information:
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© 2011 Blackwell Publishing Ltd. |
Affiliation:
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School of Life Sciences, University of Sussex, Brighton BN1 9QG, UK. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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