Trichophyton verrucosum

Ciri dan struktur

Trichophyton verrucosum is very slow-growing compared to other dermatophytes. In culture, it is characterized by being flat, white/cream colour, having an occasional dome, with a glabrous texture, known as the variant album, however other variations are also found: T. verrucosum var. ochraceum has a flat, yellow, glabrous colony; T. verrucosum var. discoides has a gray-white, flat, and tomentose colony; and T. verrucosum var. autotrophicum is rarely seen and is associated with sheep. Under a microscope, macronidia are rare, and have a rat-tail or string bean shape, while micronidia are tear-shaped and have been only observed in laboratories when grown under enriched conditions. It lacks a teleomorph (sexual) stage. At 37 °C (the only dermatophyte with an optimum growth temperature this high), chlamydospores become thick-walled and found in long chains. Macronidia are more commonly produced on BCP-milk solids-yeast extract agar, and only on colonies over 7 days old. Under refrigeration, it will die. Regions infected with T. verrucosum will fluoresce under a blacklight in cattle, but not in humans.

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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

Trichophyton verrucosum is very slow-growing compared to other dermatophytes. In culture, it is characterized by being flat, white/cream colour, having an occasional dome, with a glabrous texture, known as the variant album, however other variations are also found: T. verrucosum var. ochraceum has a flat, yellow, glabrous colony; T. verrucosum var. discoides has a gray-white, flat, and tomentose colony; and T. verrucosum var. autotrophicum is rarely seen and is associated with sheep. Under a microscope, macronidia are rare, and have a rat-tail or string bean shape, while micronidia are tear-shaped and have been only observed in laboratories when grown under enriched conditions. It lacks a teleomorph (sexual) stage. At 37 °C (the only dermatophyte with an optimum growth temperature this high), chlamydospores become thick-walled and found in long chains. Macronidia are more commonly produced on BCP-milk solids-yeast extract agar, and only on colonies over 7 days old. Under refrigeration, it will die. Regions infected with T. verrucosum will fluoresce under a blacklight in cattle, but not in humans. Trichophyton verrucosum is thought to have evolved from a soil-dwelling ancestor that migrated to its contemporary cattle host, losing many features that it previously required for survival in soil habitats through genetic drift, including vitamin prototrophy, urease activity, and the ability to perforate hair.

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

Rujukan: [1]

Habitat atau konteks temuan

kultur yang didokumentasikan

Substrat

tanah

Peran atau konteks

Belum dikategorikan pada rilis ini.

Reproduksi

Trichophyton verrucosum is very slow-growing compared to other dermatophytes. In culture, it is characterized by being flat, white/cream colour, having an occasional dome, with a glabrous texture, known as the variant album, however other variations are also found: T. verrucosum var. ochraceum has a flat, yellow, glabrous colony; T. verrucosum var. discoides has a gray-white, flat, and tomentose colony; and T. verrucosum var. autotrophicum is rarely seen and is associated with sheep. Under a microscope, macronidia are rare, and have a rat-tail or string bean shape, while micronidia are tear-shaped and have been only observed in laboratories when grown under enriched conditions. It lacks a teleomorph (sexual) stage.

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.
• Original geographic, specimen and life-cycle scope retained; source import awaits individual editorial review.
• 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

Dokumentasi Trichophyton verrucosum dari Wikimedia Commons. Chlamydospores of Trichophyton verrucosum grown for 7 d on Bromocresol purple milk solids glucose agar at 37 C. Identifikasi mengikuti record berkas sumber.

Jenis

Fotografi

Kredit

Medmyco

Lisensi

CC BY-SA 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] Trichophyton verrucosum — Wikipedia (en)Bagian sumber: Frozen revision 1377808597
   Tanggal penghimpunan sumber: 2026-10-12
   Teks sumber: CC BY-SA4.0 · Wikipedia contributors
2. [2] Catalogue of Life Base2026-09-11 — Trichophyton verrucosumBagian sumber: ColDP NameUsage.tsv ID 58HJ3; accepted species; source 2073
   Tanggal penghimpunan sumber: 2026-10-12
3. [3] Dokumentasi visual — Trichophyton verrucosumBagian sumber: Individual media record; identification follows the source, not independent determination
   Tanggal penghimpunan sumber: 2026-10-12
   Media sumber: CC BY-SA 4.0 · Medmyco