|HELLER, WADE - University Of Hawaii|
|HUGHES, MARC - University Of Hawaii|
|LUIZ, BLAINE - University Of Hawaii|
|BRILL, EVA - University Of Hawaii|
|FRIDAY, JAMES - University Of Hawaii|
|WILLIAMS, ADAM - Hawaii Department Of Land And Natural Resources|
Submitted to: Forest Pathology
Publication Type: Peer Reviewed Journal
Publication Acceptance Date: 7/12/2019
Publication Date: 10/10/2019
Citation: Heller, W.P., Hughes, M.A., Luiz, B.C., Brill, E., Friday, J.B., Williams, A.M., Keith, L.M. 2019. First report of ceratocystis huliohia causing mortality of metrosideros polymorpha trees on the island of Kaua'i, Hawai'i, USA. Forest Pathology. 49(5). https://doi.org/10.1111/efp.12546.
Interpretive Summary: Ceratocystis huliohia is one of two newly described tree pathogens causing rapid ‘ohi‘a death. C. huliohia was recently detected on Kaua‘i, which is the first report of it beyond Hawai‘i Island.
Technical Abstract: The fungus Ceratocystis huliohia was detected for the first time in dead and dying Metrosideros polymorpha trees on the Island of Kaua‘i, Hawai‘i, U.S.A. Fungal isolates were recovered from diseased trees into culture and identities were confirmed by diagnostic qPCR assay and DNA sequencing. Growth chamber inoculations confirmed C. huliohia pathogenicity on M. polymorpha seedlings and subsequently the same fungus was recovered, completing Koch’s postulates. DNA sequence analysis revealed a unique ITS haplotype for Kaua‘i isolates of C. huliohia that has not been found on Hawai‘i Island.