Isthmomyces lanceatus

Ciri dan struktur

Asexual morph hyphomycetous. Colonies on CMA white to dark salmon, reverse pale brown, attaining about 2 cm diam. after 20 days at 25 °C. Mycelium partly superficial, partly immersed, composed of branched, septate, slender, hyaline hyphae. Conidiophores macronematous, mononematous, cylindrical, erect, straight, unbranched, 0–1- septate, smooth, hyaline, up to 30 µm long, 3–3.5 µm wide. Conidiogenous cells polyblastic, cylindrical, denticulate, sympodial extended, integrated, terminal, hyaline. Blastoconidia isthmospore, somewhat fusiform, hyaline or subhyaline, smooth, thin-walled, 21.3–39.7 µm long, strongly constricted at the median septum, narrow, tiny, made of two cellular isthmic-segments: i) basal isthmic-segment narrow-clavate, sometimes cylindrical-clavate, truncated at the base, unicellular, 0–1-septate, 12.5–18.5 × 3.0–4.8 µm; ii) apical isthmic-segment broadly obclavate, obspathulate, rounded at the tip, unicellular, 0–1-septate, 13.0–30.0 × 2.3–3.8 µm. Arthroconidia often formed in the aerial mycelium, disarticulated from fertile hyphae. Sexual state: unknown.

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Rujukan: [1]

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

Habitat dan peran ekologis

Isthmomyces lanceatus was first isolated by Beverwijk from leaf of Castanea vesca in steam (Hoog and Hennebert 1983). However, the taxonomic status of this species was Ascomycota incertae sedis. In this study, this is the first report of I. lanceatus isolated from Asia. Morphologically, the conidia of our isolates are larger than the holotype CBS 622.66. Our phylogenetic analysis of combined LSU and ITS sequences reveals that the phylogenetic position of I. lanceatus is in Microthyriaceae and I. lanceatus is close to I. dissimilis in this tree.

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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

Asexual morph hyphomycetous. Colonies on CMA white to dark salmon, reverse pale brown, attaining about 2 cm diam. after 20 days at 25 °C. Mycelium partly superficial, partly immersed, composed of branched, septate, slender, hyaline hyphae. Conidiophores macronematous, mononematous, cylindrical, erect, straight, unbranched, 0–1- septate, smooth, hyaline, up to 30 µm long, 3–3.5 µm wide. Conidiogenous cells polyblastic, cylindrical, denticulate, sympodial extended, integrated, terminal, hyaline. Blastoconidia isthmospore, somewhat fusiform, hyaline or subhyaline, smooth, thin-walled, 21.3–39.7 µm long, strongly constricted at the median septum, narrow, tiny, made of two cellular isthmic-segments: i) basal isthmic-segment narrow-clavate, sometimes cylindrical-clavate, truncated at the base, unicellular, 0–1-septate, 12.5–18.5 × 3.0–4.8 µm; ii) apical isthmic-segment broadly obclavate, obspathulate, rounded at the tip, unicellular, 0–1-septate, 13.0–30.0 × 2.3–3.8 µm.

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

Isthmomyces lanceatus (YMF 1.04794) a conidia b conidiophores and conidiogenous cells. Scale bars: 10 µm (a, b). The arrow indicates septum inside isthmic-segments.

Jenis

Pelat ilmiah

Kredit

Min Qiao, Hua Zheng, Ji-Shu Guo, Rafael F. Castañeda-Ruiz, JianPing Xu, Jie Peng, Ke-Qin Zhang, Ze-Fen Yu

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] Two new asexual genera and six new asexual species in the family Microthyriaceae (Dothideomycetes, Ascomycota) from China — Isthmomyces lanceatusBagian sumber: PMC8648689_section_35
   Tanggal penghimpunan sumber: 2026-10-12
   Teks sumber: CC BY 4.0 · Qiao M, Zheng H, Guo JS, Castañeda-Ruiz RF, Xu JP, Peng J, Zhang KQ, Yu ZF.
2. [2] Catalogue of Life Base2026-09-11 — Isthmomyces lanceatusBagian sumber: ColDP NameUsage.tsv ID B2M9M; accepted species; source 2073
   Tanggal penghimpunan sumber: 2026-10-12
3. [3] Dokumentasi visual — Isthmomyces lanceatusBagian sumber: Individual media record; identification follows the source, not independent determination
   Tanggal penghimpunan sumber: 2026-10-12
   Media sumber: CC BY 4.0 · Min Qiao, Hua Zheng, Ji-Shu Guo, Rafael F. Castañeda-Ruiz, JianPing Xu, Jie Peng, Ke-Qin Zhang, Ze-Fen Yu