Pseudopestalotiopsis gilvanii INPA 2913 Silva, Gilvan F.; Gualberto, Gilvana F.; Catarino, Aricleia M., Fernandes, Thiago S.

Gualberto, Gilvana F., Catarino, Aricléia De M., Sousa, Thiago F., Cruz, Jeferson C., Hanada, Rogério E., Caniato, Fernanda F. & Silva, Gilvan F., 2021, Pseudopestalotiopsis gilvanii sp. nov. and Neopestalotiopsis formicarum leaves spot pathogens from guarana plant: a new threat to global tropical hosts, Phytotaxa 489 (2), pp. 121-139 : 132-134

Pseudopestalotiopsis gilvanii INPA 2913 Silva, Gilvan F.; Gualberto, Gilvana F.; Catarino, Aricleia M., Fernandes, Thiago S. , sp. nov. MycoBank: MB837806

Etymology: Refers to the first name of the author who designed this study.

Holotype: INPA 2913

Pycnidial conidiomata on PDA, fusiform, ellipsoid or straight. Concolourous conidia measuring 24.02–34.28 × 4.63–7.35 µm, 3–5 septa and 2–5 appendages of 14.86–39.92 µm long ( Table 3 ; Figure 3A–C ). This strain differs from Ps. simitheae by tef1-α (9-bp) and tub2 (27 bp) sequence data ( Figure 4 ).

Culture characteristics: Colonies on PDA with 95 mm of diameter after 7 days at a room temperature of ± 25 °C. Coloration: white with cottony and vigorous aerial mycelium. Numerous black pycnidia in the center of the colony of reverse white with black dots ( Table 3 ; Figure 3A ).

Material examined: Brazil, Amazonas State, Manaus, on leaves of guarana plants ( Paullinia cupana var. sorbilis ), 11 Sep. 2017, G. F. Gualberto, INPA 2913 (holotype), ex-type living culture (INPA 2013) .

Figures

FIGURE 3. Pseudopestalotiopsis gilvanii (strain INPA 2913), aspects of colonies in PDA (A), aspects of conidia (B) and scanning electron microscopy of conidia (C). Neopestalotiopsis formicarum (strain INPA 2916), aspects of colonies in PDA (D), aspects of conidia (E) and scanning electron microscopy of conidia (F).

FIGURE 4. Nucleotides differences in the ITS, tef1-α and tub2 sequences of Pseudopestalotiopsis gilvanii and closely related species. Ten nucleotides up and downstream to the nucleotide variation are in light green.