Phytophthora idaei

Phytophthora ideai (ex-type CPHST BL 38) sexual phase: smooth-walled, pigmented oogonium with and paragynous antheridium; photo by Gloria Abad, USDA-APHIS-PPQ.

Phytophthora idaei

Phytophthora ideai (ex-type CPHST BL 38) sexual phase: smooth-walled, pigmented oogonium with amphyginous antheridium; photo by Gloria Abad, USDA-APHIS-PPQ.

Phytophthora idaei

Phytophthora ideai (ex-type CPHST BL 38) sexual phase: smooth-walled, pigmented oogonia with amphyginous antheridia; photo by Gloria Abad, USDA-APHIS-PPQ.

Phytophthora idaei

Phytophthora ideai (ex-type CPHST BL 38) sexual phase: smooth-walled, comma-shaped, and pigmented oogonium with tapered base; photo by Gloria Abad, USDA-APHIS-PPQ.

Phytophthora idaei

Phytophthora ideai (ex-type CPHST BL 38) sexual phase: smooth-walled, pigmented oogonium with tapered base and paragynous antheridium; photo by Gloria Abad, USDA-APHIS-PPQ.

Phytophthora idaei

Phytophthora ideai (ex-type CPHST BL 38) sexual and asexual phases: pigmented oospore and papillate sporangium; photo by Gloria Abad, USDA-APHIS-PPQ.

Phytophthora idaei

Phytophthora ideai (ex-type CPHST BL 38) sexual phase: smooth-walled, comma-shaped, and pigmented oogonium with tapered base and paragynous antheridium; photo by Gloria Abad, USDA-APHIS-PPQ.

Phytophthora idaei

Phytophthora ideai (ex-type CPHST BL 38) asexual phase: persistent papillate sporangia produced in simple lax sympodium sporangiophores; photo by Gloria Abad, USDA-APHIS-PPQ.

Phytophthora idaei

Phytophthora ideai (ex-type CPHST BL 38) asexual phase: papillate sporangium; photo by Gloria Abad, USDA-APHIS-PPQ.

Phytophthora idaei

Phytophthora ideai (ex-type CPHST BL 38) asexual phase: persistent papillate sporangia produced in irregular lax sympodium sporangiophores; photo by Gloria Abad, USDA-APHIS-PPQ.

Phytophthora idaei

Phytophthora ideai (ex-type CPHST BL 38) asexual phase: papillate sporangium with external proliferation; photo by Gloria Abad, USDA-APHIS-PPQ.

Phytophthora ilicis (in progress - Abad et al. 2023b)
Phytophthora spp. in Clade 3: portion of the seven-loci ML phylogeny featuring the type cultures of 212 described species (by T. Bourret). Notice the position of P. ilicis selected specimen CBS 149896 = S&T BL 39. Gloria Abad, USDA S&T.

Phytophthora ilicis (in progress - Abad et al. 2023b)
Phytophthora spp. in Clade 3: Morphological Tabular key (PDF) and Tabular key legends (PDF) in IDphy2 KEY SECTION. Notice the data of P. ilicis selected specimen CBS 149896 = S&T BL 39. Gloria Abad, USDA S&T.  

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

Phytophthora ilicis (CPHST BL 39) 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 ilicis (in progress - Abad et al. 2023b)

Phytophthora ilicis (selected specimen CPHST BL 39) asexual phase:(a) semipapillate persistent sporangia with pedicels and (b, c) knobby mycelia; photos by Gloria Abad, USDA-APHIS-PPQ.

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

Phytophthora ilicis (selected specimen CPHST BL 39) sexual phase: plerotic oospores with smooth-walled oogonia with amphigynous antheridia; photos by Gloria Abad, USDA-APHIS-PPQ.

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

canopy defoliation on Ilex aquifolium caused by Phytophthora ilicis in Sardinia, Italy; photo by Bruno Scanu and Antonio Franceschini. Università degli Studi di Sassari, Italy

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

fresh lesion around axillary node of an Ilex aquifolium leaf caused by Phytophthora ilicis in Sardinia, Italy; photo by Bruno Scanu and Antonio Franceschini. Università degli Studi di Sassari, Italy

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

bleeding lesion on the stem of Ilex aquifolium caused by Phytophthora ilicis in Sardinia, Italy; photo by Bruno Scanu and Antonio Franceschini. Università degli Studi di Sassari, Italy

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

Phytophthora ilicis (selected specimen CPHST BL 39) sexual phase: plerotic oospore with smooth-walled oogonium with amphigynous antheridium; photo by Gloria Abad, USDA-APHIS-PPQ.

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

Phytophthora ilicis (selected specimen CPHST BL 39) sexual phase: plerotic oospore with smooth-walled oogonium with amphigynous antheridium; photo by Gloria Abad, USDA-APHIS-PPQ.

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

Phytophthora ilicis (selected specimen CPHST BL 39) sexual phase: plerotic oospore with smooth-walled oogonium with amphigynous antheridium; photo by Gloria Abad, USDA-APHIS-PPQ.

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

Phytophthora ilicis (selected specimen CPHST BL 39) asexual phase: semipapillate persistent sporangia with pedicels; photo by Gloria Abad, USDA-APHIS-PPQ.

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

Phytophthora ilicis (selected specimen CPHST BL 39) asexual phase: knobby mycelia; photo by Gloria Abad, USDA-APHIS-PPQ.

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

Phytophthora ilicis (selected specimen CPHST BL 39) asexual phase: knobby mycelia; photo by Gloria Abad, USDA-APHIS-PPQ.

Phytophthora infestans (in progress - Abad et al. 2023b)
Phytophthora spp. in subclade 1c: portion of the seven-loci ML phylogeny featuring the type cultures of 212 described species (by T. Bourret). Notice the position of P. infestans Ex-epitype CBS 147289, T30-4. Gloria Abad, USDA S&T.

Phytophthora infestans (in progress - Abad et al. 2023b)
Phytophthora spp. in subclade 1c: Morphological Tabular key (PDF) and Tabular key legends (PDF) in IDphy2 KEY SECTION. Notice the data of P. infestans Ex-epitype CBS 147289, T30-4. Gloria Abad, USDA S&T.

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

Phytophthora infestans (CPHST BL 142) 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 infestans (in progress - Abad et al. 2023b)

Phytophthora infestans (A1 x A2) heterothallic sexual phase: (a–d) smooth-walled oogonia with amphigynous antheridia and plerotic oospores; photos by Gloria Abad USDA-APHIS-PPQ.

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

Phytophthora infestans (CPHST BL 142, selected specimen) asexual phase: (a, b) sporangia in sporangiophores; (c) sporangia external germination; (d–h) papillate sporangia with caducous short pedicels; photos by Gloria Abad, USDA-APHIS.

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

Phytophthora infestans (A1 x A2) heterothallic sexual phase: (a–d) smooth-walled oogonium with amphigynous antheridium and a plerotic oospore; photo by Gloria Abad USDA-APHIS-PPQ.

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

Phytophthora infestans (A1 x A2) heterothallic sexual phase: (a–d) smooth-walled oogonium with amphigynous antheridium and a plerotic oospore; photo by Gloria Abad USDA-APHIS-PPQ.