Alternaria brassicicola

Ciri dan struktur

The conidia of A. brassicicola are abundant in the outdoor environment from the months of May to late October in the northern hemisphere, peaking in June and again in October. The conidia are dark brown and smooth-walled, up to 60 x 14μm. The conidia are cylindrical to oblong in shape and are muriform and produced in chains of 8-10 spores. They are firmly attached to conidiophores that are olive-brown, septate, and growing to an upper range of 100-200 μm, although this overall length may vary. Conidia are borne in continuous, chain-like structure, but branching at the base has also been observed. Although conidia can be spread by rain, the most common means of spread is through the air. The fungus grows on epidermal leaf wax of plants, particularly those in the Brassicaceae, and prefers an environment with high humidity and temperature range of 20-30 C. Macroscopically, the mycelium exhibits a range of colour: unpigmented when young, to olive-grey, grey-black at maturity. Colonies of A. brassicicola tend to be dark brown or black in colour.

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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

Alternaria brassicicola is a fungal necrotrophic plant pathogen that causes black spot disease on a wide range of hosts, particularly in the genus of Brassica, including a number of economically important crops such as cabbage, Chinese cabbage, cauliflower, oilseeds, broccoli and canola. Although mainly known as a significant plant pathogen, it also contributes to various respiratory allergic conditions such as asthma and rhinoconjunctivitis. Despite the presence of mating genes, no sexual reproductive stage has been reported for this fungus. In terms of geography, it is most likely to be found in tropical and sub-tropical regions, but also in places with high rain and humidity such as Poland. It has also been found in Taiwan and Israel. Its main mode of propagation is vegetative. The resulting conidia reside in the soil, air and water. These spores are extremely resilient and can overwinter on crop debris and overwintering herbaceous plants. The conidia of A. brassicicola are abundant in the outdoor environment from the months of May to late October in the northern hemisphere, peaking in June and again in October. The conidia are dark brown and smooth-walled, up to 60 x 14μm. The conidia are cylindrical to oblong in shape and are muriform and produced in chains of 8-10 spores.

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Rujukan: [1]

Habitat atau konteks temuan

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Substrat

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Peran atau konteks

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Reproduksi

The conidia of A. brassicicola are abundant in the outdoor environment from the months of May to late October in the northern hemisphere, peaking in June and again in October. The conidia are dark brown and smooth-walled, up to 60 x 14μm. The conidia are cylindrical to oblong in shape and are muriform and produced in chains of 8-10 spores. They are firmly attached to conidiophores that are olive-brown, septate, and growing to an upper range of 100-200 μm, although this overall length may vary. Conidia are borne in continuous, chain-like structure, but branching at the base has also been observed. Although conidia can be spread by rain, the most common means of spread is through the air. The fungus grows on epidermal leaf wax of plants, particularly those in the Brassicaceae, and prefers an environment with high humidity and temperature range of 20-30 C.

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

Konidia Alternaria brassicicola dari kultur PDA berumur dua hari. Batang skala asli: 10 µm. Identitas mengikuti berkas sumber.

Jenis

Mikrograf

Kredit

Seemadua, S. Department of Agriculture, Thailand; PaDIL

Lisensi

CC BY 3.0 AU

Sumber media

Buka entri sumber

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

Dokumentasi tambahan

Sumber profil

1. [1] Alternaria brassicicola — Wikipedia (en)Bagian sumber: Frozen revision 1368922020
   Tanggal penghimpunan sumber: 2026-10-12
   Teks sumber: CC BY-SA4.0 · Wikipedia contributors
2. [2] Catalogue of Life Base2026-09-11 — Alternaria brassicicolaBagian sumber: ColDP NameUsage.tsv ID C9PD; accepted species; source 2073
   Tanggal penghimpunan sumber: 2026-10-12
3. [3] Dokumentasi visual — Alternaria brassicicolaBagian sumber: Identitas mengikuti sumber dokumentasi; bukan penentuan spesimen independen.
   Tanggal penghimpunan sumber: 2026-10-17
   Media sumber: CC BY 3.0 AU · Seemadua, S. Department of Agriculture, Thailand; PaDIL
4. [4] Dokumentasi visual — Alternaria brassicicolaBagian sumber: Identitas mengikuti sumber dokumentasi; bukan penentuan spesimen independen.
   Tanggal penghimpunan sumber: 2026-10-17
   Teks sumber: CC BY 3.0 AU · Seemadua, S. Department of Agriculture, Thailand; PaDIL
5. [5] Dokumentasi visual — Alternaria brassicicolaBagian sumber: Identitas mengikuti sumber dokumentasi; bukan penentuan spesimen independen.
   Tanggal penghimpunan sumber: 2026-10-17
   Teks sumber: CC BY 3.0 AU · Seemadua, S. Department of Agriculture, Thailand; PaDIL