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https://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 |
DOI: | 10.1126/science.1146853 |
Appears in Collections: | Aurora harvest Australian Centre for Plant Functional Genomics publications |
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