Nigrospora philosophiae-doctoris

Ciri dan struktur

Sexual morph: Not observed. Asexual morph: Hyphae interwoven, initially hyaline, becoming pale brown to yellowish-brown with age, darkening to light brown near sporulating regions, septate, thick-walled, frequently branched, 1.5–4.8 µm in diameter. Conidiophores reduced to conidiogenous cells. Conidiogenous cells initially hyaline, maturing to pale brown or yellowish-brown, predominantly solitary but occasionally clustered (2–3 cells), phialidic or subglobose, 2.5–11.4 × 3.0–8.1 µm (av. ± S.D. = 8.1 ± 2.2 × 7.1 ± 2.0). Conidia borne singly on hyphae, rarely in sparse clusters, initially light yellowish-brown, turning black or dark brown at maturity, smooth-walled, aseptate, subglobose to ellipsoidal, 13.7–18.9 × 10.4–17.8 µm (av. ± S.D. = 16.3 ± 1.1 × 13.4 ± 1.9).

Sebagian uraian ditampilkan dalam bahasa sumber; terjemahannya belum tersedia atau belum lolos pemeriksaan.

Rujukan: [1]

Pengukuran mengikuti objek, spesimen atau kultur, dan metode yang disebutkan sumber. Baca uraian asli untuk konteks lengkap.

Habitat dan peran ekologis

Nigrospora philosophiae-doctoris was first isolated from Disporum sessile (Colchicaceae) (Chen et al. 2022). Petrović et al. (2023) demonstrated that N. philosophiae-doctoris is a causal agent of olive leaf spot disease. Subsequently, Yan et al. (2025) isolated this species from lesions on Camellia japonica and reported it as a novel pathogen causing camellia leaf spot. Phylogenetic analyses confirmed that the two strains isolated in this study, CFCC 72628 and CFCC 72637, clustered within the same clade as N. philosophiae-doctoris (ex-type strain CGMCC 3.20540) with strong statistical support (ML / BI = 100/1) (Fig. 2). Morphologically, these strains exhibited conidiophores reduced to conidiogenous cells, mostly solitary, 2.5–11.4 × 3.0–8.1 µm (literature range: 4–9.5 × 3–7.5 µm); conidia were black, subglobose, and measured 13.7–18.9 × 10.4–17.8 µm (literature range: 11–16 × 8–14 µm), although slightly larger than those described by Chen et al. (2022), but all other morphological characteristics aligned with those described by Chen et al. (2022). Based on integrated phylogenetic and morphological evidence, these strains were conclusively identified as N. philosophiae-doctoris. This represents the first report of this fungal species on Juniperus chinensis and Platycladus orientalis.

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Rujukan: [1]

Habitat atau konteks temuan

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Substrat

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Peran atau konteks

Belum dikategorikan pada rilis ini.

Reproduksi

Sexual morph: Not observed. Asexual morph: Hyphae interwoven, initially hyaline, becoming pale brown to yellowish-brown with age, darkening to light brown near sporulating regions, septate, thick-walled, frequently branched, 1.5–4.8 µm in diameter. Conidiophores reduced to conidiogenous cells. Conidiogenous cells initially hyaline, maturing to pale brown or yellowish-brown, predominantly solitary but occasionally clustered (2–3 cells), phialidic or subglobose, 2.5–11.4 × 3.0–8.1 µm (av. ± S.D. = 8.1 ± 2.2 × 7.1 ± 2.0). Conidia borne singly on hyphae, rarely in sparse clusters, initially light yellowish-brown, turning black or dark brown at maturity, smooth-walled, aseptate, subglobose to ellipsoidal, 13.7–18.9 × 10.4–17.8 µm (av. ± S.D. = 16.3 ± 1.1 × 13.4 ± 1.9).

Sebagian uraian ditampilkan dalam bahasa sumber; terjemahannya belum tersedia atau belum lolos pemeriksaan.

Rujukan: [1]

Catatan identitas dan cakupan

• Nama diterima mengikuti Catalogue of Life Base2026-09-11; uraian mempertahankan konsep dan nama sumber aslinya.
• Preserve original treatment localities, hosts and substrate scope. Materials examined describe documented specimens, not the full global range.
• Impor dan terjemahan otomatis belum diperiksa editorial per profil. Struktur reproduktif yang disebutkan tidak membuktikan seluruh siklus hidup diketahui.
• Pengukuran pada uraian mengikuti spesimen, kultur, dan metode sumber; angka tidak diperluas ke semua populasi.

Melihat dengan konteks

Nigrospora philosophiae-doctoris (CFCC 72628, CFCC 72637). A. Diseased scale leaves habit of Platycladus orientalis; B. Healthy strobili habit of Juniperus chinensis; C. Colony surface on PDA; D, E. Conidia; F–I. Conidiogenous cells. Scale bars: 10 µm (D–I).

Jenis

Pelat ilmiah

Kredit

Zixian Bi, Yingying Wu, Shuji Li, Chengming Tian

Lisensi

CC BY 4.0

Sumber media

Buka entri sumber

Gambar menunjukkan objek menurut identifikasi sumber, bukan verifikasi independen spesimen oleh Fungi. Tidak ada skala baru yang ditambahkan.

Sumber profil

1. [1] New species and records of ascomycetes on cypress in Beijing, China — Nigrospora philosophiae-doctorisBagian sumber: PMC12550508_section_66
   Tanggal penghimpunan sumber: 2026-10-12
   Teks sumber: CC BY 4.0 · Bi Z, Wu Y, Li S, Tian C.
2. [2] Catalogue of Life Base2026-09-11 — Nigrospora philosophiae-doctorisBagian sumber: ColDP NameUsage.tsv ID B2Q5Y; accepted species; source 2073
   Tanggal penghimpunan sumber: 2026-10-12
3. [3] Dokumentasi visual — Nigrospora philosophiae-doctorisBagian sumber: Individual media record; identification follows the source, not independent determination
   Tanggal penghimpunan sumber: 2026-10-12
   Media sumber: CC BY 4.0 · Zixian Bi, Yingying Wu, Shuji Li, Chengming Tian