Homoserine and asparagine are host signals that trigger in planta expression of a pathogenesis gene in Nectria haematococca.

@article{Yang2005HomoserineAA,
  title={Homoserine and asparagine are host signals that trigger in planta expression of a pathogenesis gene in Nectria haematococca.},
  author={Zhennai Yang and Linda M. Rogers and Yuanda Song and Wenjin Guo and Pappachan E. Kolattukudy},
  journal={Proceedings of the National Academy of Sciences of the United States of America},
  year={2005},
  volume={102 11},
  pages={4197-202}
}
Some pathogenesis-related genes are expressed in fungi only when the pathogen is in the host, but the host signals that trigger these gene expressions have not been identified. Virulent Nectria haematococca infects pea plants and requires either pelA, which is induced by pectin, or pelD, which is induced only in planta. However, the host signal(s) that trigger pelD expression was unknown. Here we report the isolation of the host signals and identify homoserine and asparagine, two free amino… CONTINUE READING

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