Summary
The nucleotide sequence and derived amino acid sequence of a cDNA clone (BLT4) for a low temperature induced barley gene were determined. This gene, together with a small family of related genes, was shown to reside on chromosome 3. The BLT4 clone has homology with genes in wheat and oats. Its expression was studied in oats and in barley doubled haploid lines segregating for spring/winter habit and for frost hardiness. These analyses show that elevated steady state levels of BLT4 mRNA are produced in shoot meristematic tissue after 3 days low positive temperature treatment. The low temperature response was found in all barley doubled haploid lines and was therefore not associated specifically with either the spring/winter habit or frost hardiness. Elevated levels of BLT4 mRNA were also seen in drought-stressed barley and it is likely that this is a gene encoding a low molecular weight protein that is responsive to dehydrative stresses, such as cold and drought.
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Communicated by E. Meyerowitz
The EMBL accession number for BLT4 is X56547 H. vulgare cDNA
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Dunn, M.A., Hughes, M.A., Zhang, L. et al. Nucleotide sequence and molecular analysis of the low temperature induced cereal gene, BLT4. Molec. Gen. Genet. 229, 389–394 (1991). https://doi.org/10.1007/BF00267460
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DOI: https://doi.org/10.1007/BF00267460