Neocamarosporium suaedae Safi & M. Mehrabi-Koushki, 2025

Safi, Atena, Mehrabi-Koushki, Mehdi & Arzanlou, Mahdi, 2025, New species of Neocamarosporium from two halophyte plants in Iran, Phytotaxa 696 (2), pp. 101-116 : 109

Neocamarosporium suaedae Safi & M. Mehrabi-Koushki , sp. nov. ( Fig. 3 )

MycoBank: MB 856827

Holotype: Iran, Khuzestan Province, Shadegan, isolated from Suaeda vermiculata ( Chenopodiaceae ), Dec. 2022, A. Safi (holotype, IRAN 18462 F); ex-type cultures, IRAN 4955 C = SCUA-Saf-P1).

Etymology: The name refers to the host genus Suaeda from which it was isolated.

Morphology on PDA: Conidiomata pycnidial, superficial or semi-immersed, solitary, globose to sub-globose, dark brown to black, with an inconspicuous ostiole or pore, glabrous or with hyphal outgrowths, (127–)174–580 × (117–)167–506 µm; 95% confidence limits = 276–340 × 249–297 µm, (x̄ ± SD = 308 ± 111.5 × 272 ± 83.5 µm, n = 50), Pycnidial wall pseudoparenchymatous, 4–8 layers thick, outer layers composed of more or less textura angularis to prismatica, brown to black, outer layers darker. Conidiophores are reduced to conidiogenous cells. Conidiogenous cells hyaline, solitary, doliiform, enteroblastic, annellidic, integrated, smooth-walled, (2.9–)4.1–8.8 × 2.7–6.1 µm, 95% confidence limits = 5.5–6.7 × 3.9–4.5 µm, (x̄ ± SD = 6.1 ± 1.6 × 4.2 ± 0.8 µm, n = 30). Conidia amerosporous, didymosporous, phragmosporous or dictyosporous, with longitudinal and/or transverse septa, pale brown to brown, smooth-walled, variable in shape, subglobose to ellipsoid, fusiform or oblong; subglobose to ellipsoid conidia 6.5– 11.4(–13.2) × 5.5–7.9 µm, 95% confidence limits = 8.9–9.6 × 6.8–7.1 µm, (x̄ ± SD = 9.3 ± 1.3 × 6.9 ± 0.5 µm, n = 50); fusiform conidia 7.8–12.2(–16.03) × 5.8–8.9 µm, 95% confidence limits = 10.2–11 × 7.3–7.7 µm, (x̄ ± SD = 10.6 ± 1.3 × 7.5 ± 0.7 µm, n = 50); oblong conidia 9.5–13.8 × 7.1–9.8 µm, 95% confidence limits = 10.8–11.4 × 8.4–8.7 µm, (x̄ ± SD = 11.1 ± 1.09 × 8.6 ± 0.5 µm, n = 50). Sexual morph not observed. Chlamydospores not observed.

Culture characteristics: Colonies on PDA reaching 20 mm diam after 8 days of incubation at 25 ± 0.5 °C, circular with undulate margin, floccose, brownish grey with paler margin, with age becoming darker; reverse dark gray to black. Colonies on OA reaching 26 mm diam after 8 days of incubation at 25 ± 0.5 °C, floccose, initially brownish gray with paler margin, with age becoming dark brown and covered by white, woolly mycelial masses; reverse dark brown.

Additional specimen examined: Iran, Khuzestan Province, Shadegan, isolated from Suaeda vermiculata ( Chenopodiaceae ), Dec. 2022, A. Safi (SCUA-Saf-P1-2).

Note: Neocamarosporium suaedae delimited morphologically and phylogenetically from other new and previously known species of Neocamarosporium ( Fig. 1 , see above).

Figures

FIGURE 1. Phylogenetic tree constructed from a maximum likelihood analysis based on the combined ITS, LSU, tef1α and tub2 sequences of Neocamarosporium strains. The tree was rooted to Stemphylium eturmiunum (CPC 38613). Bootstrap values obtained in maximum likelihood (MLBS) and maximum parsimony (MPBS) analyses ≥ 50% and Bayesian posterior probability values (BYPP) ≥ 0.5 are shown at the nodes, respectively.

FIGURE 3. Neocamarosporium suaedae (IRAN 4955C). a–b. 8-days colony on PDA in top and reverse sides, c–d. Colony on OA after 8 days, respectively, e–f. Pycnidia. g. Section of pycnidia. h. Pycnidial wall and conidiogenous cells (arrows). i. Conidia. Scale bars: f: 70 μm, g–i = 20 μm, h: 7 μm.