Australasian Plant Disease Notes (2023) 18 (8) - First report of Clonostachys

Akshita Jain, Daniel C. Huston, John Wainer, Mike Hodda, Oliver Hayes, Simon Whittock, Elisabeth Darling, Ross Mann, Jacqueline Edwards, Brendan Rodoni and Timothy Sawbridge (2023)
First report of Clonostachys byssicola causing seedling wilt in Litsea deccanensis
Australasian Plant Disease Notes 18 (8)
Abstract: Hop cyst nematode, Heterodera humuli Filipjev, 1934 was found in soil samples collected from hop farms in Bushy Park, Tasmania and in Merriang, Victoria, Australia. Morphological and molecular characteristics were consistent with those described for this species in other parts of the world. Novel gene sequences of ITS rRNA, 28S rRNA and CO1 mtDNA generated from cysts were compared against sequences of H. humuli available on the NCBI GenBank database, demonstrating little to no genetic variation between Australian hop cyst nematode populations and those from other regions. This report provides the first molecular sequence data for H. humuli from Australia and reports a significant range extension of this cyst nematode from Tasmania to the Australian mainland.
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Full text of article
Database assignments for author(s): Jacqueline Edwards, Brendan Rodoni

Research topic(s) for pests/diseases/weeds:
population dynamics/ epidemiology
surveys/sampling/distribution

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Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Heterodera humuli	Hop (Humulus lupulus)	Australia (South+SE)