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Phytophthora agathidicida B.S. Weir, Beever, Pennycook & Bellgard 2015

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Phytophthora agathidicida B.S. Weir, Beever, Pennycook & Bellgard in Weir et al., Phytotaxa 205 29 (2015)
Phytophthora agathidicida B.S. Weir, Beever, Pennycook & Bellgard 2015
Weir, B.S.; Paderes, E.P.; Anand, N; Uchida, J.Y.; Pennycook, S.R.; Bellgard, S.E.; Beever, R.E. 2015: A taxonomic revision of Phytophthora Clade 5 including two new species, Phytophthora agathidicida and P. cocois. Phytotaxa 205(1): 21-38.

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Uncertain
Present
New Zealand
Political Region
Weir, B.S.; Paderes, E.P. et al. (2015)
Phytophthora agathidicida (as P. heveae) was first recorded in New Zealand in 1974. Its origin is uncertain but its low genetic diversity and recent impact as a pathogen suggest an origin outside New Zealand [BSW - 2015]

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B.S. Weir, Beever, Pennycook & Bellgard
B.S. Weir, Beever, Pennycook & Bellgard
Weir, B.S.; Paderes, E.P.; Anand, N; Uchida, J.Y.; Pennycook, S.R.; Bellgard, S.E.; Beever, R.E. 2015: A taxonomic revision of Phytophthora Clade 5 including two new species, Phytophthora agathidicida and P. cocois. Phytotaxa 205(1): 21-38.
2015
29
ICN
Phytophthora agathidicida B.S. Weir, Beever, Pennycook & Bellgard 2015
species
Phytophthora agathidicida
Latin noun: agathid- (linguistic stem of Agathis) and -cida (suffix: one who kills) — the Agathis-killer.
New Zealand. Coromandel: Great Barrier Island, from bleeding lesion on trunk of Agathis australis (D. Don) Lindl. ex Loudon, 23 Mar. 2006, R.E. Beever REB316-14, dried culture specimen, holotype PDD 91595; ex-holotype living culture preserved in a metabolically inactive state as ICMP 17027 = WPC P15175

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Chromista
Oomycota
Oomycetes
Peronosporales
Peronosporaceae
Phytophthora
agathidicida

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Weir, B.S.; Paderes, E.P.; Anand, N; Uchida, J.Y.; Pennycook, S.R.; Bellgard, S.E.; Beever, R.E. 2015: A taxonomic revision of Phytophthora Clade 5 including two new species, Phytophthora agathidicida and P. cocois. Phytotaxa 205(1): 21-38.

Phytophthora agathidicida B.S. Weir, Beever, Pennycook & Bellgard 2015

NEW ZEALAND. Northland: Trounson Park, trunk lesion of Agathis australis, 23 Mar. 2010, N. Waipara, culture REB 327-41 = ICMP 18404; Northland: Trounson Park, soil under A. australis, 23 Mar. 2010, A. Vannini, culture 327-60 = ICMP 18410; Northland: Raetea, trunk lesion of A. australis, 23 Mar. 2010, N. Waipara, culture 327-34 = ICMP 18401; Northland: Waipoua Forest, near Tane Mahuta, trunk lesion of A. australis, 23 Mar. 2010, N. Waipara, culture 327-47 = ICMP 18407; Northland: Waipoua Forest, trunk lesion of A. australis, 23 Mar. 2010, N. Waipara, culture 327-53 = ICMP 18408; Coromandel: Great Barrier Island, from wood of A. australis, Mar. 1972, P. Gadgil, culture ATCC 32256 = FRI 135 = ICMP 16471; Coromandel: Great Barrier Island, Kaiarara, from bleeding lesion on trunk of A. australis, 21 May 2009, N. Waipara, culture REB 326-154 = ICMP 18360; Auckland: Pakiri, trunk lesion of A. australis, 18 Nov. 2008, R.E. Beever, REB326-1 = ICMP 18244; Auckland: Waitakere Ranges, Cascades, from bleeding lesion on trunk of A. australis, 7 Oct. 2009, R.E. Beever, culture REB 326-221 = ICMP 18358; Auckland: Huia, soil under A. australis, 23 Mar. 2010, A. Vannini, culture 327-46 = ICMP 18406.
Differs from other Phytophthora Clade 5 species in its oogonium ornamentation with occasional and slightly raised protuberances, and its larger mean oospore diameter (31.9 µm). Found in association with Agathis australis. Differs from P. cocois and P. heveae in its DNA barcode sequence of ITS; differs from all other Phytophthora species in its DNA sequence of the ND1 gene. Description:—The species is homothallic, with isolates forming oogonia quickly (3–4 days) and abundantly on V8A. Oogonia are globose with a mean width of 31.9 μm, and ranging between (22.2–)29.7–32.2–32.7(–45) μm. Oogonium wall ornamentation is mildly stipulate. Oospores nearly fill the oogonia with a mean width of 27.7 μm, and ranging between (19.8–)25–27.5–29.7(–35) μm. Antheridia are amphigynous, globose some with knots at the base. Sporangia are globose to ovoid-ellipsoid, papillate, borne terminally from long thin branched sporangiophores and could be formed via internal proliferation. Sporangia are non-caducous (although some isolates have a somewhat defined septum near the base of the sporangium, see Fig. 5H). Sporangia have a mean width of 28.4 μm, and ranging between (12.4–)24.8–27.7–32.2(–50) μm, and a mean length of 39.6 μm, and ranging between (14.9–)32.4–37.5–47.5(–75) μm. Vegetative hyphae are simple, with slight swellings, and lacking chlamydospores in culture. Colony morphology after 7 days was very uniform across the isolates tested on most of the media examined. Colonies are loosely aerial. On 5% clarified V8-juice agar, there is a weakly stellate radial pattern. Minimum growth temperature 6°C; maximum 25°C; optimum 21.5°C. Complete morphometric statistics are presented in Table 3.
Known only from kauri (Agathis australis) trees and associated soil in northern (<38°S) New Zealand’s mixed podocarp broad-leaf forest.
Disease and management:—The root and collar rot of kauri (colloquially termed “kauri dieback”) is the subject of a long term management response led by the Ministry of Primary Industries, Department of Conservation, regional councils (Auckland, Bay of Plenty, Northland, Waikato), in partnership with the Tangata Whenua Roopu. Delimitation surveys have confirmed impacts upon kauri of all age classes, in forest remnants and plantations, throughout its geographic range. Phytosanitary measures have been put in place in high-access regional parks to control the spread of the pathogen by foot-traffic, and the use of phosphite to control the disease in planta has also commenced.
NEW ZEALAND. Coromandel: Great Barrier Island, from bleeding lesion on trunk of Agathis australis (D. Don) Lindl. ex Loudon, 23 Mar. 2006, R.E. Beever REB316-14, dried culture specimen, holotype PDD 91595; ex-holotype living culture preserved in a metabolically inactive state as ICMP 17027 = WPC P15175.

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Phytophthora agathidicida B.S. Weir, Beever, Pennycook & Bellgard 2015
Phytophthora agathidicida B.S. Weir, Beever, Pennycook & Bellgard
Byers, Alexa K.; Condron, Leo et al. Byers, Alexa K.; Condron, Leo; O'Callaghan, Maureen; Waipara, Nick; Black, Amanda
Phytophthora agathidicida B.S. Weir, Beever, Pennycook & Bellgard 2015
Phytophthora agathidicida B.S. Weir, Beever, Pennycook & Bellgard
Guo, Yanan; Dupont, Pierre‐Yves et al. (2020)
Phytophthora agathidicida B.S. Weir, Beever, Pennycook & Bellgard 2015
Phytophthora agathidicida B.S. Weir, Beever, Pennycook & Bellgard
McCarthy, Charley G. P.; Fitzpatrick, David A. (2017)
Phytophthora agathidicida B.S. Weir, Beever, Pennycook & Bellgard 2015
Phytophthora agathidicida B.S. Weir, Beever, Pennycook & Bellgard
Studholme, D.J.; McDougal, R.L. et al. (2016)
Phytophthora agathidicida B.S. Weir, Beever, Pennycook & Bellgard 2015
Phytophthora agathidicida B.S. Weir, Beever, Pennycook & Bellgard
Weir, B.S.; Paderes, E.P. et al. (2015)
Phytophthora agathidicida B.S. Weir, Beever, Pennycook & Bellgard 2015
Phytophthora de Bary 1876 [1875]

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Phytophthora agathidicida B.S. Weir, Beever, Pennycook & Bellgard 2015
[Not available]
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Etymology
Latin noun: agathid- (linguistic stem of Agathis) and -cida (suffix: one who kills) — the Agathis-killer.
typification
New Zealand. Coromandel: Great Barrier Island, from bleeding lesion on trunk of Agathis australis (D. Don) Lindl. ex Loudon, 23 Mar. 2006, R.E. Beever REB316-14, dried culture specimen, holotype PDD 91595; ex-holotype living culture preserved in a metabolically inactive state as ICMP 17027 = WPC P15175

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c00a06fa-1fb6-4721-90bc-3143eed8ebfd
scientific name
Names_Fungi
18 June 2014
28 November 2024
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