Pestalotiopsis abietis C. M. Tian &amp; M. Gu 2021, sp. nov.
Creators: name: Gu, Mo
name: Hu, Dong-Wei
name: Han, Bing
name: Jiang, Ning
name: Tian, Cheng-Ming
Publisher: name: Zenodo
Year: 2021
Subjects: Biodiversity
Taxonomy
Fungi
Ascomycota
Sordariomycetes
Amphisphaeriales
Pestalotiopsidaceae
Pestalotiopsis
Pestalotiopsis abietis

description: <i>Pestalotiopsis abietis</i> C.M. Tian &amp; M. Gu, <i>sp. nov.</i>Figure 2 <b>MycoBank no:</b> MB 832473. <i>Etymology</i>:— <i>abietis</i>, named after the host <i>Abies fargesii</i> <b>Asexual morph</b>: <i>Conidiomata</i> pycnidial in culture on PDA, globose, scattered or gregarious and confluent, semi-immersed, dark brown, 100–650 μm diam. <i>Conidiophores</i> often reduced to conidiogenous cells. <i>Conidiogenous cells</i> discrete ampulliform to lageniform, smooth, thin-walled, hyaline, with 1–2 proliferations, sometimes remain vegetative. <i>Conidia</i> 19.9–31.2 × 5.8–8.0 μm (<i>x</i> = 24.0 × 6.8 μm), fusiform, straight to slightly curved, 4–septate, basal cell conic to obconic, hyaline or slightly olivaceous, thin and verruculose, 2.4–8 μm long (<i>x</i> = 4.7 μm), with three median cells, doliform, concolourous, olivaceous, septa and periclinal walls darker than the rest of the cell, together 11.4–17.6 μm long (<i>x</i> = 14.8 μm) second cell from base 3.5–6.4 μm (<i>x</i> = 5 μm); third cell 3.8–6.1 μm (<i>x</i> = 4.9 μm); fourth cell 4– 5.8 μm (<i>x</i> = 4.9 μm); apical cell hyaline, conic, 2.4–6 μm long (<i>x</i> = 4.3 μm); with 1–3 tubular apical appendages (mainly 3), arising from the apex of the apical cell, 7.6–20.6 μm long (<i>x</i> = 14.1 μm); basal appendage 1.3–5.2 μm long. ......continued on the next page ......continued on the next page ......continued on the next page The ex-type strains are marked with *, and NA means not available. <i>Culture characteristics:</i> —Colonies on PDA attaining 25–45 mm diam after 7 d at 25 °C, with smooth edge, whitish, with sparse aerial mycelium on the surface with black, gregarious conidiomata; reverse similar in color. <i>Materials examined:</i> — CHINA, Shaanxi Prov., Ningshan County, Qinling Mountain, Huoditang forest park, 33°26’7”N 108°26’48”E, 1570 m a.s.l., on needles of <i>Abies fargesii</i>, N. Jiang &amp; C.M. Tian, 3 July 2018 (Holotype BJFC-S1584, ex-type CFCC 53011; <i>ibid.</i> living culture CFCC 53012 and CFCC 53013). <i>Notes:</i> —This new species is introduced as molecular data showed it to be distinct, which is also supported by morphological traits. In the phylogram, <i>P. abietis</i> appears most closely related to <i>P. parva</i>. However, <i>P. parva</i> has shorter conidia compared with <i>P. abietis</i> (16.5–20 μm in <i>P. parva</i> vs. 19.9–31.2 μm in <i>P. abietis</i>) (Maharachchikumbura <i>et al.</i> 2014b). Therefore, we confirmed that <i>P. abietis</i> could be described as a new taxon.
description: Published as part of <i>Gu, Mo, Hu, Dong-Wei, Han, Bing, Jiang, Ning &amp; Tian, Cheng-Ming, 2021, Pestalotiopsis abietis sp. nov. from Abies fargesii in China, pp. 93-105 in Phytotaxa 509 (1)</i> on pages 96-101, DOI: 10.11646/phytotaxa.509.1.4, http://zenodo.org/record/5426012
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