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Morphological Structure

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Phytophthora bishii

Phytophthora bishii (CPHST BL 6) sexual phase of the ex-type: oospores with paragynous antheridia; photo by G. Abad, USDA-APHIS-PPQ.

Phytophthora bishii

Phytophthora bishii (CPHST BL 6) sexual phase of the ex-type: oospores; photo by G. Abad, USDA-APHIS-PPQ.

Phytophthora bishii

Phytophthora bishii (CPHST BL 6) sexual phase of the ex-type: oospores with paragynous antheridia; photo by G. Abad, USDA-APHIS-PPQ.

Phytophthora bishii

Phytophthora bishii (CPHST BL 6) asexual phase of the ex-type: sporangia with  external proliferation; photo by G. Abad, USDA-APHIS-PPQ.


Phytophthora bishii

Phytophthora bishii (CPHST BL 6) sexual phase of the ex-type: oospores with paragynous antheridia; photo by G. Abad, USDA-APHIS-PPQ.

Phytophthora bishii

Phytophthora bishii (CPHST BL 6) asexual phase of the ex-type: semipapillate persistent sporangium; photo by G. Abad, USDA-APHIS-PPQ.

Phytophthora bishii

Phytophthora bishii (CPHST BL 6) asexual phase of the ex-type: semipapillate persistent sporangium; photo by G. Abad, USDA-APHIS-PPQ.

Phytophthora bishii

Phytophthora bishii (CPHST BL 6) sexual phase of the ex-type: aplerotic oospore with paragynous antheridium; photo by G. Abad, USDA-APHIS-PPQ.


Phytophthora bishii

Phytophthora bishii (CPHST BL 6) asexual phase of the ex-type: semipapillate persistent sporangium; photo by G. Abad, USDA-APHIS-PPQ.

Phytophthora bishii

Phytophthora bishii (CPHST BL 6) asexual phase of the ex-type: semipapillate persistent sporangia borne on simple sympodial sporangiophore; photo by G. Abad, USDA-APHIS-PPQ.

Phytophthora bishii

Phytophthora bishii (CPHST BL 6) asexual phase of the ex-type: semipapillate persistent sporangia borne on simple sympodial sporangiophore; photo by G. Abad, USDA-APHIS-PPQ.

Phytophthora bishii

Phytophthora bishii (CPHST BL 6) asexual phase of the ex-type: hyphal swellings; photo by G. Abad, USDA-APHIS-PPQ.


Phytophthora bishii

Phytophthora bishii (CPHST BL 6) asexual phase of the ex-type: semipapillate persistent sporangia borne on simple sympodial sporangiophore; photo by G. Abad, USDA-APHIS-PPQ.

Phytophthora bishii

Phytophthora bishii (CPHST BL 6) asexual phase of the ex-type: hyphal swellings; photo by G. Abad, USDA-APHIS-PPQ.

Phytophthora bishii

Phytophthora bishii (CPHST BL 6) asexual phase of the ex-type: hyphal swellings; photo by G. Abad, USDA-APHIS-PPQ.

Phytophthora boehmeriae
Phytophthora spp. in subclade 10a: portion of the seven-loci ML phylogeny featuring the type cultures of 212 described species (by T. Bourret). Notice the position of P. boehmeriae Ex-type CBS 291.29 = S&T BL 32G. Gloria Abad, USDA S&T.

Phytophthora boehmeriae
Phytophthora spp. in subclade 10a: Morphological Tabular key (PDF) and Tabular key legends (PDF) in IDphy2 KEY SECTION. Notice the data of P. boehmeriae Ex-type CBS 291.29 = S&T BL 32G. Gloria Abad, USDA S&T.
Phytophthora boehmeriae

Phytophthora boehmeriae (CPHST BL 79) colony 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 boehmeriae

Phytophthora boehmeriae (CPHST BL 32G ex-type) (a) colony morphology on potato dextrose agar, (b-g) asexual phase; (a-c) sporangia originated in unbranched or sympodially branching sporangiophores, (d-g) sporangia papillated caducous with short pedicels, (d-f) sporangia globose, (g) sporangium with irregular shape; photos by Gloria Abad, USDA-APHIS-PPQ

Phytophthora boehmeriae

Phytophthora boehmeriae (CPHST BL 32G ex-type) sexual phase: (a-d) oogonia smooth-walled with amphigynous antheridia almost spherical in shape and plerotic oospores, (b, c) antheridia with digitated projections; photos by Gloria Abad, USDA-APHIS-PPQ.


Phytophthora boehmeriae

Neighbor-joining phylogenetic tree with 1000 bp based on the ITS rDNA region of Phytophthora species in Clade 10 showing the position of Phytophthora boehmeriae ex-type (in red) and the cluster of the "sensu stricto". Other clusters correspond to P. gondwanenwsis (2017) and putative new species in P. like boehmeriae "complex". Phythophthora parvispora in Clade 9 is the outgroup.

Phytophthora boehmeriae

Phytophthora species in Clade 10 (ITS rDNA). Notice the position of the cluster of the "sensu stricto" of P. boehmeriae, in relation of the position of P. gondwanensis and other related clusters. Blue arrows point the position of sequences from the the ex-type and red arrows show the position of misidentifications.

Phytophthora boehmeriae

Phytophthora boehmeriae (CPHST BL 32G ex-type) asexual phase: sympodially branching sporangiophores. Sporangia papillate, caducous, with short pedicels.

Phytophthora boehmeriae

Phytophthora boehmeriae (CPHST BL 32G ex-type) asexual phase: sympodially branching sporangiophores. Sporangia papillate, caducous, with short pedicels.


Phytophthora boehmeriae

Phytophthora boehmeriae (CPHST BL 32G ex-type) asexual phase: sporangium globose, papillate, caducous, with short pedicel. Photo by Gloria Abad, USDA-APHIS-PPQ.

Phytophthora boehmeriae

Phytophthora boehmeriae (CPHST BL 32G ex-type) asexual phase: sporangium globose, papillate, caducous, with short pedicel. Photo by Gloria Abad, USDA-APHIS-PPQ.

Phytophthora boehmeriae

Phytophthora boehmeriae (CPHST BL 32G ex-type) asexual phase: sporangium papillate, caducous, with short pedicel. Photo by Gloria Abad, USDA-APHIS-PPQ.

Phytophthora boehmeriae

Phytophthora boehmeriae (CPHST BL 32G ex-type) asexual phase: sporangium with irregular shape, papillate, caducous. Photo by Gloria Abad, USDA-APHIS-PPQ.


Phytophthora boehmeriae

Phytophthora boehmeriae (CPHST BL 32G ex-type) sexual phase: oogonium smooth-walled with amphigynous antheridium almost spherical in shape with plerotic oospore. Note digitated projection on antheridium. Photo by Gloria Abad, USDA-APHIS-PPQ.

Phytophthora boehmeriae

Phytophthora boehmeriae (CPHST BL 32G ex-type) sexual phase: oogonium smooth-walled with amphigynous antheridium almost spherical in shape with plerotic oospore. Note digitated projection on antheridium. Photo by Gloria Abad, USDA-APHIS-PPQ.

Phytophthora boehmeriae

Phytophthora boehmeriae (CPHST BL 32G ex-type) sexual phase: oogonium smooth-walled with amphigynous antheridium almost spherical in shape with plerotic oospore; photo by Gloria Abad, USDA-APHIS-PPQ.

Phytophthora boehmeriae

Phytophthora boehmeriae (CPHST BL 32G ex-type) sexual phase: oogonium smooth-walled with amphigynous antheridium almost spherical in shape with plerotic oospore. Photo by Gloria Abad, USDA-APHIS-PPQ.