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    Author(s): Henry Amerson; C. Dana Nelson; Thomas L. Kubisiak; E.George Kuhlman; Saul Garcia
    Date: 2015
    Source: Forests. 6(8): 2739-2761
    Publication Series: Scientific Journal (JRNL)
    Station: Southern Research Station
    PDF: Download Publication  (202.36 KB)


    Nearly two decades of research on the host-pathogen interaction in fusiform rust of loblolly pine is detailed. Results clearly indicate that pathotype-specific genes in the host interacting with pathogen avirulence cause resistance as defined by the non-gall phenotype under favorable environmental conditions for disease development. In particular, nine fusiform rust resistance genes (Fr genes) are described here including the specific methods to determine each and their localization on the reference genetic map of loblolly pine. Understanding how these and other apparent Fr genes in loblolly pine and other rust-susceptible pines impact resistance screening, parental and progeny selection, and family and clonal deployment is an important area in forest genetics research and operational tree breeding. The documentation of these Fr genes is a key piece of information towards gaining that understanding and ultimately improving breeding and deployment strategies.

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    Amerson, Henry V.; Nelson, C. Dana; Kubisiak, Thomas L.; Kuhlman, E.George; Garcia, Saul. 2015. Identification of nine pathotype-specific genes conferring resistance to fusiform rust in loblolly pine (Pinus taeda L.). Forests. 6(8): 2739-2761. 23 p. DOI: 10.3390/f6082739


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    host-pathogen genetics, gene-for-gene interaction, resistance genes, Pinus taeda, Cronartium quercuum f.sp. fusiforme, fusiform rust, Fr genes, genetic markers

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