Abstract
As a step toward greater understanding of the genetics of verticillium wilt resistance in plants, we report the sequencing of a candidate wilt resistance gene, mVe1, from the mint diploid model species, Mentha longifolia (Lamiaceae). mVe1 is a putative homolog of tomato (Solanum lycopersicum L.) verticillium wilt (Ve) resistance genes. The mVe1 gene has a coding region of 3,051 bp. The predicted mVe1 protein contains a leucine-rich repeat domain, a common feature of plant disease resistance proteins. We compared 13 mVe1 alleles from three mint species. These alleles shared 96.2–99.6% nucleotide identity. We analyzed four M. longifolia populations segregating with respect to mVe1 alleles and wilt resistance versus susceptibility and found one association between mVe1 genotype and wilt phenotype. We conclude that mVe1 may play a role in mint verticillium wilt resistance, but variation for resistance in our segregating progenies is likely polygenic. Therefore, further investigations of mVe1 and identification of additional candidate genes are both warranted.
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Acknowledgments
We thank Estelle Hrabak and Dennis Mathews for their careful manuscript reviews and helpful comments. This is New Hampshire Agricultural Experiment Station (NHAES) contribution #2370. This work was supported by NHAES grant NH0433 and by the Mint Industry Research Council.
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Communicated by S. Hohmann.
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Vining, K., Davis, T. Isolation of a Ve homolog, mVe1, and its relationship to verticillium wilt resistance in Mentha longifolia (L.) Huds. Mol Genet Genomics 282, 173–184 (2009). https://doi.org/10.1007/s00438-009-0454-6
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DOI: https://doi.org/10.1007/s00438-009-0454-6