Gallery

Image Type

Morphological Structure

Clades


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Phytophthora oleae
Phytophthora spp. in Clade 2d: portion of the seven-loci ML phylogeny featuring the type cultures of 212 described species (by T. Bourret). Notice the position of P. oleae Ex-type CBS 141871 = S&T BL 219. Gloria Abad, USDA S&T.
Phytophthora oleae
Phytophthora spp. in Clade 2d: Morphological Tabular key (PDF) and Tabular key legends (PDF) in IDphy2 KEY SECTION. Notice the data of P. oleae Ex-type CBS 141871 = S&T BL 219. Gloria Abad, USDA S&T.
Phytophthora oreophila
Phytophthora spp. in subclade 6a: portion of the seven-loci ML phylogeny featuring the type cultures of 212 described species (by T. Bourret). Notice the position of P. oreophila Ex-type CBS 144708. Gloria Abad, USDA S&T.
Phytophthora oreophila
Phytophthora spp. in subclade 6a: Morphological Tabular key (PDF) and Tabular key legends (PDF) in IDphy2 KEY SECTION. Notice the data of P. oreophila Ex-type CBS 144708. Gloria Abad, USDA S&T.

Phytophthora oreophila

colony morphology after 5 d growth at 20ºC on carrot agar, V8 agar, malt extract agar, and potato-dextrose agar (from left to right)

Phytophthora oreophila

persistent, non-papillate, predominantly ovoid sporangia; scale bar = 25µm.

Phytophthora oreophila

Oogonia with wavy walls containing aplerotic oospores, with large ooplasts which turn pale brown on maturity. Antheridia were exclusively paragynous, generally situated adjacent to the oogonial stalk; scale bar = 25µm.

Phytophthora ornamentata
Phytophthora spp. in subclade 6b: portion of the seven-loci ML phylogeny featuring the type cultures of 212 described species (by T. Bourret). Notice the position of P. ornamentata Ex-type CBS 140647 = S&T BL 152. Gloria Abad, USDA S&T.

Phytophthora ornamentata
Phytophthora spp. in subclade 6b: Morphological Tabular key (PDF) and Tabular key legends (PDF) in IDphy2 KEY SECTION. Notice the data of P. ornamentata Ex-type CBS 140647 = S&T BL 152. Gloria Abad, USDA S&T.
Phytophthora ornamentata

Phytophthora ornamentata (CPHST BL 152) colonies of the ex-type grown for 7 days on (a) V8® Agar, (b) potato dextrose agar, and (c) malt extract agar; photo by Krysta Jennings and Leandra Knight, USDA-APHIS-PPQ

Phytophthora ornamentata

Phytophthora ornamentata colony morphology of the ex-type (PH152 – Bruno Scanu) grown for 5 days at 20°C on (a) carrot agar, (b) potato dextrose agar; photos by Bruno Scanu and Antonio Franceschini, Università degli Studi di Sassari, Italy

Phytophthora ornamentata

Phytophthora ornamentata morphology of the ex-type (PH152 – Bruno Scanu): (a–c) asexual phase, (a) mature nonpapillate elongated persistent sporangium; (b) elongated sporangium showing internal proliferation; (c) globose to subglobose hyphal swellings with radiating hyphae; (d, e) sexual phase, ornamented oogonium, (d) with amphigynous antheridium; (e) with paragynous antheridium and finger-like projection; photos by Bruno Scanu and Antonio Franceschini


Phytophthora ornamentata

extensive dieback and mortality of Pistacia lentiscus caused by Phytophthora ornamentata in Sardinia, Italy; photo by Bruno Scanu, Università degli Studi di Sassari, Italy

Phytophthora pachypleura
Phytophthora spp. in subclade 2c: portion of the seven-loci ML phylogeny featuring the type cultures of 212 described species (by T. Bourret). Notice the position of P. pachypleura Ex-type CABI IMI502404 (AVA) = S&T BL 146. Gloria Abad, USDA S&T.
Phytophthora pachypleura
Phytophthora spp. in subclade 2c: Morphological Tabular key (PDF) and Tabular key legends (PDF) in IDphy2 KEY SECTION. Notice the data of P. pachypleura Ex-type CABI IMI502404 (AVA) = S&T BL 146. Gloria Abad, USDA S&T.
Phytophthora pachypleura

Phytophthora pachypleura (CPHST BL 146) colonies of the ex-type grown for 7 days on (a) V8® Agar, (b) potato dextrose agar, and (c) malt extract agar; photo by Krysta Jennings and Leandra Knight, USDA-APHIS-PPQ


Phytophthora pachypleura

Phytophthora pachypleura (ex-type CPHST BL 146) sexual phase: (a–c) gold-brown oogonia with paragynous antheridia and plerotic oospores, (d–g) oogonia with tapered bases and paragynous antheridia; photos by Gloria Abad, USDA-APHIS-PPQ.

Phytophthora pachypleura

Phytophthora pachypleura (ex-type, 1 BH-2013 strain RHS 53593.1) homothallic sexual phase: smooth-walled oogonia, with paragynous antheridia, sometimes with tapered bases. Oospores can be plerotic or aplerotic; photo by Beatrice Henricot, The Royal Horticultural Society.

Phytophthora pachypleura

Phytophthora pachypleura (ex-type, 1 BH-2013 strain RHS 53593.1) asexual phase: semipapillate, sometimes bipapillate, persistent sporangia with distorted shapes and hyphal swellings in sporangiophores; photos by Beatrice Henricot, The Royal Horticultural Society.

Phytophthora pachypleura

Phytophthora pachypleura (ex-type CPHST BL 146) sexual phase: (a) gold-brown oogonium with paragynous antheridia and plerotic oospore with ooplast, and young oogonium, (b) aplerotic oospore in smooth-walled oogonium with paragynous diclinous antheridium; photos by Gloria Abad, USDA-APHIS-PPQ.


Phytophthora pachypleura

Phytophthora pachypleura (ex-type CPHST BL 146) sexual phase: gold-brown oogonium with paragynous antheridia and plerotic oospore with ooplast, and young oogonium; photo by Gloria Abad, USDA-APHIS-PPQ.

Phytophthora pachypleura

Phytophthora pachypleura (ex-type CPHST BL 146) sexual phase: oogonium with tapered base and paragynous antheridium; photo by Gloria Abad, USDA-APHIS-PPQ.

Phytophthora pachypleura

Phytophthora pachypleura (ex-type CPHST BL 146) sexual phase: gold-brown oogonium with paragynous antheridium and plerotic oospore; photo by Gloria Abad, USDA-APHIS-PPQ.

Phytophthora pachypleura

Phytophthora pachypleura (ex-type CPHST BL 146) sexual phase: oogonium with tapered base and paragynous antheridium; photo by Gloria Abad, USDA-APHIS-PPQ.


Phytophthora pachypleura

Phytophthora pachypleura (ex-type CPHST BL 146) sexual phase: oogonium with tapered base and paragynous antheridium; photo by Gloria Abad, USDA-APHIS-PPQ.

Phytophthora pachypleura

Phytophthora pachypleura (ex-type CPHST BL 146) sexual phase: oogonium with tapered base and paragynous antheridium; photo by Gloria Abad, USDA-APHIS-PPQ.

Phytophthora pachypleura

Phytophthora pachypleura (ex-type CPHST BL 146) sexual phase: oogonium with paragynous antheridium and plerotic oospore; photo by Gloria Abad, USDA-APHIS-PPQ.

Phytophthora pachypleura

Phytophthora pachypleura (ex-type CPHST BL 146) sexual phase: aplerotic oospore in smooth-walled oogonium with paragynous diclinous antheridium; photo by Gloria Abad, USDA-APHIS-PPQ.


Phytophthora pachypleura

Phytophthora pachypleura (ex-type CPHST BL 146) sexual phase: gold-brown oogonia with paragynous antheridia and plerotic oospores; photo by Gloria Abad, USDA-APHIS-PPQ.

Phytophthora palmivora (in progress - Abad et al. 2023b)
Phytophthora spp. in Clade 4: portion of the seven-loci ML phylogeny featuring the type cultures of 212 described species (by T. Bourret). Notice the position of P. palmivora selected specimen CBS 305.62 = S&T BL 105. Gloria Abad, USDA S&T.
Phytophthora palmivora (in progress - Abad et al. 2023b)
Phytophthora spp. in Clade 4: Morphological Tabular key (PDF) and Tabular key legends (PDF) in IDphy2 KEY SECTION. Notice the data of P. palmivora selected specimen CBS 305.62 = S&T BL 105. Gloria Abad, USDA S&T.
Phytophthora palmivora (in progress - Abad et al. 2023b)

Phytophthora palmivora (CPHST BL 105) colonies of the selected specimen #1 grown for 7 days on (a) V8® Agar, (b) potato dextrose agar, and (c) malt extract agar; photo by Krysta Jennings and Leandra Knight, USDA-APHIS-PPQ