Phytophthora drechsleri (in progress - Abad et al. 2023b)

Phytophthora drechsleri (CPHST BL 140, selected specimen) asexual phase: nonpapillate persistent sporangium with tapered base; photo by Gloria Abad, USDA-APHIS-PPQ.

Phytophthora drechsleri (in progress - Abad et al. 2023b)

Phytophthora drechsleri (CPHST BL 140, selected specimen) asexual phase: nonpapillate persistent sporangia originated in unbranched sporangiophores; photo by Gloria Abad, USDA-APHIS-PPQ.

Phytophthora drechsleri (in progress - Abad et al. 2023b)

Phytophthora drechsleri (CPHST BL 140, selected specimen) asexual phase: nonpapillate persistent sporangium; photo by Gloria Abad, USDA-APHIS-PPQ.

Phytophthora drechsleri (in progress - Abad et al. 2023b)

Phytophthora drechsleri (CPHST BL 140, selected specimen) asexual phase: nonpapillate persistent sporangia with tapered bases; photo by Gloria Abad, USDA-APHIS-PPQ.

Phytophthora drechsleri (in progress - Abad et al. 2023b)

Phytophthora drechsleri (CPHST BL 140, selected specimen) asexual phase: nonpapillate persistent sporangia; photo by Gloria Abad, USDA-APHIS-PPQ.

Phytophthora drechsleri (in progress - Abad et al. 2023b)

Phytophthora drechsleri (CPHST BL 140, selected specimen) asexual phase: nonpapillate persistent sporangia and hyphal swellings in sporangiophore; photo by Gloria Abad, USDA-APHIS-PPQ.

Phytophthora drechsleri (in progress - Abad et al. 2023b)

Phytophthora drechsleri (CPHST BL 140, selected specimen) asexual phase: nonpapillate persistent sporangia; photo by Gloria Abad, USDA-APHIS-PPQ.

Phytophthora drechsleri (in progress - Abad et al. 2023b)

Phytophthora drechsleri (CPHST BL 140, selected specimen) asexual phase: different shapes of nonpapillate persistent sporangia and hyphal swellings; photo by Gloria Abad, USDA-APHIS-PPQ.

Phytophthora elongata
Phytophthora spp. in Clade 2e: portion of the seven-loci ML phylogeny featuring the type cultures of 212 described species (by T. Bourret). Notice the position of P. elongata Ex-type CBS 125799 = S&T BL 62. Gloria Abad, USDA S&T.

Phytophthora elongata
Phytophthora spp. in Clade 2e: Morphological Tabular key (PDF) and Tabular key legends (PDF) in IDphy2 KEY SECTION. Notice the data of P. elongata Ex-type CBS 125799 = S&T BL 62. Gloria Abad, USDA S&T. 

Phytophthora elongata

Phytophthora elongata colonies grown for 7 days at 20°C on: (a) V8® agar, (b) carrot agar, (c) malt extract agar, (d) potato-dextrose agar

Phytophthora elongata

semipapillate sporangia of Phytophthora elongata on V8 agar flooded with soil extract: (a) ovoid, with external proliferation; (b) mature elongated-obpyriform sporangium; (c) limoniform, with external proliferation; (d) empty ovoid sporangium with a conspicuous basal plug and a mature elongated-obturbinate sporangium; (e) ovoid sporangium and large distorted sporangium with elongated curved apex and a tapering base; (f) mature sporangia germinating directly

Phytophthora elongata

(a) mature oogonia with aplerotic oospore and paragynous antheridium; (b) oogonium with plerotic, slightly golden-brown oospore and paragynous antheridium (c) excentric reniform oogonium with tapering base, markedly aplerotic, slightly golden-brown oospore and paragynous antheridium; (d) oogonium with plerotic oospore and very long thick oogonial stalk; (e) oogonium with plerotic, golden-brown oospore, very long oogonial stalk and paragynous antheridium

Phytophthora emzansi
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. emzansi Ex-type CBS 147464 = S&T BL 210. Gloria Abad, USDA S&T.

Phytophthora emzansi
Phytophthora spp. in subclade 2c: Morphological Tabular key (PDF) and Tabular key legends (PDF) in IDphy2 KEY SECTION. Notice the data of P. emzansi Ex-type CBS 147464 = S&T BL 210. Gloria Abad, USDA S&T.

Phytophthora emzansi

persistent, semi-papillate, predominantly ovoid sporangia, usually solitary but sometime is loose sympodia; scale bar = 25µm

Phytophthora emzansi

oogonia with smooth walls containing plerotic oospores; antheridia were exclusively amphigynous; scale bar = 20µm

Phytophthora erythroseptica (in progress - Abad et al. 2023b)
Phytophthora spp. in subclade 8a: portion of the seven-loci ML phylogeny featuring the type cultures of 212 described species (by T. Bourret). Notice the position of P. erythroseptica selected specimen CBS 148925 = S&T BL 80. Gloria Abad, USDA S&T.

Phytophthora erythroseptica (in progress - Abad et al. 2023b)
Phytophthora spp. in subclade 8a: Morphological Tabular key (PDF) and Tabular key legends (PDF) in IDphy2 KEY SECTION. Notice the data of P. erythroseptica selected specimen CBS 148925 = S&T BL 80. Gloria Abad, USDA S&T.

Phytophthora erythroseptica (in progress - Abad et al. 2023b)

Phytophthora erythroseptica (CPHST BL 80) colonies of the ex-epitype 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 erythroseptica (in progress - Abad et al. 2023b)

Phytophthora erythroseptica (CPHST BL 36G) colonies of a selected specimen 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 erythroseptica (in progress - Abad et al. 2023b)

Phytophthora erythroseptica (CPHST BL 36G, selected specimen) asexual phase: (a-g) sporangia nonpapillated produced in simple sympodial (b-d) or in unbranched sporangiophores (e, g); photos by Gloria Abad, USDA-APHIS-PPQ.

Phytophthora erythroseptica (in progress - Abad et al. 2023b)

Phytophthora erythroseptica (CPHST BL 36G, selected specimen) sexual phase: (a-d) oogonia with amphigynous antheridia and aplerotic oospores, (b) antheridium with digitate projection; photos by Gloria Abad, USDA-APHIS-PPQ

Phytophthora erythroseptica (in progress - Abad et al. 2023b)

pink rot of potatoes caused by Phytophthora erythroseptica, photo from Le Plant de Pomme de Terre - Francais, The French Industry

Phytophthora erythroseptica (in progress - Abad et al. 2023b)

Phytophthora erythroseptica (CPHST BL 36G, selected specimen) asexual phase: sporangia nonpapillated produced in simple sympodial sporangiophores; photo by Gloria Abad, USDA-APHIS-PPQ.

Phytophthora erythroseptica (in progress - Abad et al. 2023b)

Phytophthora erythroseptica (CPHST BL 36G, selected specimen) asexual phase: sporangia nonpapillated produced in simple sympodial sporangiophores; photo by Gloria Abad, USDA-APHIS-PPQ.

Phytophthora erythroseptica (in progress - Abad et al. 2023b)

Phytophthora erythroseptica (CPHST BL 36G, selected specimen) asexual phase: sporangium nonpapillated produced in unbranched sporangiophore; photo by Gloria Abad, USDA-APHIS-PPQ.

Phytophthora erythroseptica (in progress - Abad et al. 2023b)

Phytophthora erythroseptica (CPHST BL 36G, selected specimen) asexual phase: sporangium nonpapillated produced in unbranched sporangiophore; photo by Gloria Abad, USDA-APHIS-PPQ.

Phytophthora erythroseptica (in progress - Abad et al. 2023b)

Phytophthora erythroseptica (CPHST BL 36G, selected specimen) asexual phase: sporangium nonpapillated produced in unbranched sporangiophore; photo by Gloria Abad, USDA-APHIS-PPQ.

Phytophthora erythroseptica (in progress - Abad et al. 2023b)

Phytophthora erythroseptica (CPHST BL 36G, selected specimen) asexual phase: sporangia nonpapillated produced in simple sympodial sporangiophores; photo by Gloria Abad, USDA-APHIS-PPQ.

Phytophthora erythroseptica (in progress - Abad et al. 2023b)

Phytophthora erythroseptica (CPHST BL 36G, selected specimen) asexual phase: sporangia nonpapillated produced in simple sympodial sporangiophores; photo by Gloria Abad, USDA-APHIS-PPQ.

Phytophthora erythroseptica (in progress - Abad et al. 2023b)

Phytophthora erythroseptica (CPHST BL 36G, selected specimen) sexual phase: oogonium with amphigynous antheridium and aplerotic oospore; photo by Gloria Abad, USDA-APHIS-PPQ.