Litylenchus crenatae(LITYCR)
Distribution details in Canada (Ontario)
Current pest situation evaluated by EPPO on the basis of information dated
2019: Absent, unreliable record
EPPO Reporting Service (2019/083) : it is suspected that the emerging 'Beech Leaf Disease' observed in parts of North America might be associated with Litylenchus crenatae, but this remains to be confirmed.
EPPO Reporting Service (2020/082) : Nematode populations collected in Ohio (initially identified as L. crenatae), Pennsylvania and Ontario were further studied. Results showed that North American nematode populations differed in morphology, host range, and ribosomal DNA marker from those in Japan. Therefore, it was proposed to consider the North American nematode associated with beech leaf disease as a new subspecies of L. crenatae, and to call it: Litylenchus crenatae mccannii.
EPPO Reporting Service (2020/082) : Nematode populations collected in Ohio (initially identified as L. crenatae), Pennsylvania and Ontario were further studied. Results showed that North American nematode populations differed in morphology, host range, and ribosomal DNA marker from those in Japan. Therefore, it was proposed to consider the North American nematode associated with beech leaf disease as a new subspecies of L. crenatae, and to call it: Litylenchus crenatae mccannii.
* Carta LK, Handoo ZA, Li S, Kantor M, Bauchan G, McCann D, Gabriel CK, Yu Q, Reed S, Koch J, Martin D, Burke DJ (2020) Beech leaf disease symptoms caused by newly recognized nematode subspecies Litylenchus crenatae mccannii (Anguinata) described from Fagus grandifolia in North America. Forest Pathology, e12580. https://doi.org/10.1111/efp.12580
* Ewing CJ, Hausman CE, Pogacnik J, Slot J, Bonello P (2018) Beech leaf disease: an emerging forest epidemic. Forest Pathology e12488. DOI: 10.1111/efp.12488
* Ewing CJ, Hausman CE, Pogacnik J, Slot J, Bonello P (2018) Beech leaf disease: an emerging forest epidemic. Forest Pathology e12488. DOI: 10.1111/efp.12488
| Country | State | Status | |
|---|---|---|---|
| United States of America | Ohio | Absent, unreliable record | |
| United States of America | New York | Absent, unreliable record | |
| United States of America | Pennsylvania | Absent, unreliable record | |
| United States of America | Absent, unreliable record |