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http://hdl.handle.net/2440/44090
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Type: | Journal article |
Title: | Boron toxicity tolerance in barley arising from efflux transporter amplification |
Author: | Sutton, T. Baumann, U. Hayes, J. Collins, N. Shi, B. Schnurbusch, T. Hay, A. Mayo, G. Pallotta, M. Tester, M. Langridge, P. |
Citation: | Science, 2007; 318(5855):1446-1449 |
Publisher: | Amer Assoc Advancement Science |
Issue Date: | 2007 |
ISSN: | 0036-8075 1095-9203 |
Organisation: | Australian Centre for Plant Functional Genomics (ACPFG) |
Statement of Responsibility: | Tim Sutton, Ute Baumann, Julie Hayes, Nicholas C. Collins, Bu-Jun Shi, Thorsten Schnurbusch, Alison Hay, Gwenda Mayo, Margaret Pallotta, Mark Tester and Peter Langridge |
Abstract: | Both limiting and toxic soil concentrations of the essential micronutrient boron represent major limitations to crop production worldwide. We identified Bot1, a BOR1 ortholog, as the gene responsible for the superior boron-toxicity tolerance of the Algerian barley landrace Sahara 3771 (Sahara). Bot1 was located at the tolerance locus by high-resolution mapping. Compared to intolerant genotypes, Sahara contains about four times as many Bot1 gene copies, produces substantially more Bot1 transcript, and encodes a Bot1 protein with a higher capacity to provide tolerance in yeast. Bot1 transcript levels identified in barley tissues are consistent with a role in limiting the net entry of boron into the root and in the disposal of boron from leaves via hydathode guttation. |
Keywords: | Saccharomyces cerevisiae; Hordeum; Plant Roots; Boron Compounds; Boron; Membrane Transport Proteins; Plant Lectins; Plant Proteins; Chromosome Mapping; Transcription, Genetic; Amino Acid Sequence; Base Sequence; Biological Transport; Genes, Plant; Quantitative Trait Loci; Molecular Sequence Data |
RMID: | 0020073585 |
DOI: | 10.1126/science.1146853 |
Appears in Collections: | Australian Centre for Plant Functional Genomics publications |
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