Gallery
Image Type
Morphological Structure
Clades
Phytophthora spp. in subclade 7a: portion of the seven-loci ML phylogeny featuring the type cultures of 212 described species (by T. Bourret). Notice the position of P. abietivora Ex-type NRRL 66892. Gloria Abad, USDA S&T.
Phytophthora spp. in subclade 7a: Morphological Tabular key (PDF) and Tabular key legends (PDF) in IDphy2 KEY SECTION. Notice the data of P. abietivora Ex-type NRRL 66892. Gloria Abad, USDA S&T.
Phytophthora spp. in subclade 2e: portion of the seven-loci ML phylogeny featuring the type cultures of 212 described species (by T. Bourret). Notice the position of P. acaciae Ex-type AN02. Gloria Abad, USDA S&T.
Phytophthora spp. in subclade 2e: Morphological Tabular key (PDF) and Tabular key legends (PDF) in IDphy2 KEY SECTION. Notice the data of P. acaciae Ex-type AN02. Gloria Abad, USDA S&T.
Phytophthora spp. in subclade 2e: portion of the seven-loci ML phylogeny featuring the type cultures of 212 described species (by T. Bourret). Notice the position of P. acaciivora Ex-type CBS 138638. Gloria Abad, USDA S&T.
Phytophthora spp. in subclade 2e: Morphological Tabular key (PDF) and Tabular key legends (PDF) in IDphy2 KEY SECTION. Notice the data of P. acaciivora Ex-type CBS 138638. Gloria Abad, USDA S&T.
colony morphology after 7 d growth at 20ºC on CA, V8 agar, MEA and PDA (from left to right)
persistent, semi-papillate to papillate, predominantly elongated ovoid sporangia; scale bar = 25µm
![Oogonia with wavy walls containing aplerotic oospores with large ooplasts which turn pale brown on maturity. Antheridia were exclusively amphigynous. Many oospores aborted after the formation of walls. scale bar = 25µm](images/acaciivora-oogonia.jpg)
Oogonia with wavy walls containing aplerotic oospores with large ooplasts which turn pale brown on maturity. Antheridia were exclusively amphigynous. Many oospores aborted after the formation of walls. scale bar = 25µm
![Phytophthora acerina (CPHST BL 114) 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](images/P_acerina_ET_114_fig_for_web.jpg)
Phytophthora acerina (CPHST BL 114) 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 acerina (CPHST BL 114, ex-type) asexual phase and sexual phase (a-b); different shapes of semi-papillate persistent sporangia (a-e); photos by G. Abad, USDA-APHIS-PPQ](images/P. acerina ET 114 asexual phase.S2.W.jpg)
Phytophthora acerina (CPHST BL 114, ex-type) asexual phase and sexual phase (a-b); different shapes of semi-papillate persistent sporangia (a-e); photos by G. Abad, USDA-APHIS-PPQ
![Phytophthora acerina (ex-type CPHST BL 114) sexual phase formed on hemp seed agar (a-c): smooth-walled oogonia with paragynous antheridia and plerotic oospores; photos by G. Abad, USDA-APHIS-PPQ](images/P. acerina ET 114 sexual phase.S3.W.jpg)
Phytophthora acerina (ex-type CPHST BL 114) sexual phase formed on hemp seed agar (a-c): smooth-walled oogonia with paragynous antheridia and plerotic oospores; photos by G. Abad, USDA-APHIS-PPQ
![Phytophthora acerina (ex-type CPHST BL 114) sexual phase formed on hemp seed agar. Smooth-walled oogonium with paragynous antheridium and plerotic oospore. Photo by G. Abad, USDA-APHIS-PPQ.](images/P.acerina-ET-114-oos-5HP.W.jpg)
Phytophthora acerina (ex-type CPHST BL 114) sexual phase formed on hemp seed agar. Smooth-walled oogonium with paragynous antheridium and plerotic oospore. Photo by G. Abad, USDA-APHIS-PPQ.
![Phytophthora acerina (CPHST BL 114, ex-type) asexual phase; semi-papillate persistent sporangium. Photo by G. Abad, USDA-APHIS-PPQ.](images/P.acerina-ET-114-spo-2HP.W.jpg)
Phytophthora acerina (CPHST BL 114, ex-type) asexual phase; semi-papillate persistent sporangium. Photo by G. Abad, USDA-APHIS-PPQ.
![Phytophthora acerina (ex-type CPHST BL 114) sexual phase formed on hemp seed agar. Smooth-walled oogonia with paragynous antheridia and plerotic oospores. Photo by G. Abad, USDA-APHIS-PPQ.](images/P.acerina-ET-114-oos-3HP.W.jpg)
Phytophthora acerina (ex-type CPHST BL 114) sexual phase formed on hemp seed agar. Smooth-walled oogonia with paragynous antheridia and plerotic oospores. Photo by G. Abad, USDA-APHIS-PPQ.
![Phytophthora acerina (ex-type CPHST BL 114) sexual phase formed on hemp seed agar. Smooth-walled oogonia with paragynous antheridia and plerotic oospores. Photo by G. Abad, USDA-APHIS-PPQ.](images/P.acerina-ET-114-oos-4HP.W.jpg)
Phytophthora acerina (ex-type CPHST BL 114) sexual phase formed on hemp seed agar. Smooth-walled oogonia with paragynous antheridia and plerotic oospores. Photo by G. Abad, USDA-APHIS-PPQ.
![Phytophthora acerina (CPHST BL 114, ex-type) asexual phase; semi-papillate persistent sporangium. Photo by G. Abad, USDA-APHIS-PPQ.](images/P.acerina-ET-114-spo1HP.W.jpg)
Phytophthora acerina (CPHST BL 114, ex-type) asexual phase; semi-papillate persistent sporangium. Photo by G. Abad, USDA-APHIS-PPQ.
![Phytophthora acerina (CPHST BL 114, ex-type) asexual phase; semi-papillate persistent sporangium. Photo by G. Abad, USDA-APHIS-PPQ.](images/P.acerina-ET-114-spo2HP.W.jpg)
Phytophthora acerina (CPHST BL 114, ex-type) asexual phase; semi-papillate persistent sporangium. Photo by G. Abad, USDA-APHIS-PPQ.
![Phytophthora acerina (ex-type CPHST BL 114) asexual and sexual phase. Smooth-walled oogonia and semi-papillate persistent sporangium. Photo by G. Abad, USDA-APHIS-PPQ.](images/P.acerina-ET-114-spo-oos-1H.jpg)
Phytophthora acerina (ex-type CPHST BL 114) asexual and sexual phase. Smooth-walled oogonia and semi-papillate persistent sporangium. Photo by G. Abad, USDA-APHIS-PPQ.
![Phytophthora acerina (ex-type CPHST BL 114) asexual and sexual phase. Smooth-walled oogonium and semi-papillate persistent sporangium. Photo by G. Abad, USDA-APHIS-PPQ.](images/P.acerina-ET-114-spo-oosp-6.jpg)
Phytophthora acerina (ex-type CPHST BL 114) asexual and sexual phase. Smooth-walled oogonium and semi-papillate persistent sporangium. Photo by G. Abad, USDA-APHIS-PPQ.
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. acerina Ex-type CBS 133931 = S&T BL114. Gloria Abad, USDA S&T.
Phytophthora spp. in subclade 2c: Morphological Tabular key (PDF) and Tabular key legends (PDF) in IDphy2 KEY SECTION. Notice the data of P. acerina Ex-type CBS 133931 = S&T BL114. Gloria Abad, USDA S&T.
Phytophthora spp. in subclade 10b: portion of the seven-loci ML phylogeny featuring the type cultures of 212 described species (by T. Bourret). Notice the position of P. afrocarpa Ex-type CBS 147467 = S&T BL 204. Gloria Abad, USDA S&T.
Phytophthora spp. in subclade 10b: Morphological Tabular key (PDF) and Tabular key legends (PDF) in IDphy2 KEY SECTION. Notice the data of P. afrocarpa Ex-type CBS 147467 = S&T BL 204. Gloria Abad, USDA S&T.
![persistent, non-papillate, predominantly ovoid sporangia exhibiting internal extended proliferation; scale bar = 20µm](images/afrocarpa-sporangia.jpg)
persistent, non-papillate, predominantly ovoid sporangia exhibiting internal extended proliferation; scale bar = 20µm
![Phytophthora agathidicida (CPHST BL 154) 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](images/P_agathidicida_ET_154.jpg)
Phytophthora agathidicida (CPHST BL 154) 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 agathidicida (ex-type CPHST BL 154) sexual phase formed on hemp seed agar: oogonia with wavy wall and tapered base, amphyginous antheridia, and plerotic, thick-walled oospores; photos by G.Abad, USDA-APHIS-PPQ.](images/P. agathidicida ET 154 oospores GA f tif.jpg)
Phytophthora agathidicida (ex-type CPHST BL 154) sexual phase formed on hemp seed agar: oogonia with wavy wall and tapered base, amphyginous antheridia, and plerotic, thick-walled oospores; photos by G.Abad, USDA-APHIS-PPQ.
![Phytophthora agathidicida (ex-type CPHST BL 154) sexual phase formed on hemp seed agar: oogonium with wavy wall and tapered base, amphyginous antheridium, and plerotic, thick-walled oospore; photo by G.Abad, USDA-APHIS-PPQ.](images/P agathidicida ET 154 oos 2 HPro 3.6.18.jpg)
Phytophthora agathidicida (ex-type CPHST BL 154) sexual phase formed on hemp seed agar: oogonium with wavy wall and tapered base, amphyginous antheridium, and plerotic, thick-walled oospore; photo by G.Abad, USDA-APHIS-PPQ.
![Phytophthora agathidicida (ex-type CPHST BL 154) sexual phase formed on hemp seed agar: oogonia with wavy wall and tapered base, amphyginous antheridia, and plerotic, thick-walled oospores; photos by G.Abad, USDA-APHIS-PPQ.](images/P agathidicida ET 154 oos 1A HPro 3.6.18.jpg)
Phytophthora agathidicida (ex-type CPHST BL 154) sexual phase formed on hemp seed agar: oogonia with wavy wall and tapered base, amphyginous antheridia, and plerotic, thick-walled oospores; photos by G.Abad, USDA-APHIS-PPQ.
![Participants of the 5th IUFRO Phytophthora in Forests and Natural Ecosystems Working Group (March 7-12, 2010, Auckland and Rotorua, New Zealand) attending a presentation at the Waitakere Ranges Regional Park, west of Auckland. At this location iconic native kauri ( Agathis australis ) trees were affected by “kauri dieback” caused by “ Phytophthora taxon agathis ”; photo by Gloria Abad, USDA-APHIS-PPQ.](images/P1_P_agathidicida_NZ_W.jpg)
Participants of the 5th IUFRO Phytophthora in Forests and Natural Ecosystems Working Group (March 7-12, 2010, Auckland and Rotorua, New Zealand) attending a presentation at the Waitakere Ranges Regional Park, west of Auckland. At this location iconic native kauri (Agathis australis) trees were affected by “kauri dieback” caused by “Phytophthora taxon agathis”; photo by Gloria Abad, USDA-APHIS-PPQ.