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Article

Phytophthora podocarpi sp. nov. from Diseased Needles and Shoots of Podocarpus in New Zealand

1
Scion (New Zealand Forest Research Institute Ltd.), Private Bag 3020, Rotorua 3010, New Zealand
2
Department of Primary Industries and Regional Development, Diagnostics and Laboratory Services, Sustainability and Biosecurity, 3 Baron-Hay Court, Kennsington, South Perth, WA 6151, Australia
3
The New Zealand Institute for Plant and Food Research Ltd., 74 Gerald Street, Lincoln 7608, New Zealand
*
Author to whom correspondence should be addressed.
Academic Editor: Julio Javier Diez
Forests 2022, 13(2), 214; https://doi.org/10.3390/f13020214
Received: 23 December 2021 / Revised: 12 January 2022 / Accepted: 19 January 2022 / Published: 31 January 2022
(This article belongs to the Section Forest Health)
Foliage samples from Podocarpus totara with severe needle browning and needle loss in the lower part of the crown were observed in 2011 in the Gisborne region of New Zealand. A Phytophthora genus-specific test applied directly to the needles gave a strong positive result, and subsequent isolations yielded colonies of a slow-growing oomycete. Morphological examination in vitro revealed a Phytophthora species. Preliminary comparisons of the rDNA (ITS), and ras-related protein (Ypt) gene regions with international DNA sequence revealed low sequence similarity to species from the downy mildew genus Peronospora, as well as clade 3 Phytophthora species. Other studies have also demonstrated the close relationship with Peronospora. The species was given the interim designation Phytophthora taxon tōtara pending further examination. Here, we formally describe Phytophthora podocarpi sp. Nov. and its associated disease, tōtara needle blight. View Full-Text
Keywords: tōtara; foliar disease; needle disease; phylogeny; diagnostics; detection tōtara; foliar disease; needle disease; phylogeny; diagnostics; detection
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MDPI and ACS Style

Dobbie, K.; Scott, P.; Taylor, P.; Panda, P.; Sen, D.; Dick, M.; McDougal, R. Phytophthora podocarpi sp. nov. from Diseased Needles and Shoots of Podocarpus in New Zealand. Forests 2022, 13, 214. https://doi.org/10.3390/f13020214

AMA Style

Dobbie K, Scott P, Taylor P, Panda P, Sen D, Dick M, McDougal R. Phytophthora podocarpi sp. nov. from Diseased Needles and Shoots of Podocarpus in New Zealand. Forests. 2022; 13(2):214. https://doi.org/10.3390/f13020214

Chicago/Turabian Style

Dobbie, Kiryn, Peter Scott, Pam Taylor, Preeti Panda, Diya Sen, Margaret Dick, and Rebecca McDougal. 2022. "Phytophthora podocarpi sp. nov. from Diseased Needles and Shoots of Podocarpus in New Zealand" Forests 13, no. 2: 214. https://doi.org/10.3390/f13020214

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