Ciri dan struktur
Paracoccidioides brasiliensis is a nonphotosynthetic eukaryote with a rigid cell wall and organelles very similar to those of higher eukaryotes. Being a dimorphic fungus, it has the ability to grow an oval yeast-like form at 37 °C and an elongated mycelial form produced at room temperature. The mycelial and yeast phases differ in their morphology, biochemistry, and ultrastructure. The yeast form contains large amounts of α-(1,3)-linked glucan. The chitin content of the mycelial form is greater than that of the yeast form, but the lipid content of both phases is comparable. The yeast reproduces by asexual budding, where daughter cells are borne asynchronously at multiple, random positions across the cell surface. Buds begin by layers of cell wall increasing in optical density at a point that eventually gives rise to the daughter cell. Once the bud has expanded, a cleavage plane develops between the nascent cell and the mother cell. Following dehiscence, the bud scar disappears. In tissue, budding occurs inside the granulomatous center of the disease lesion, as visualized by hematoxylin and eosin (H&E) staining of histologic sections. Nonbudding cells measure 5–15 μm in diameter, whereas those with multiple spherical buds measure from 10–20 μm in diameter. In electron microscopy, cells with multiple buds have been found to have peripherally located nuclei and cytoplasm surrounding a large central vacuole. In the tissue form of P. brasiliensis, yeast cells are larger with thinner walls and a narrower bud base than those of the related dimorphic fungus, Blastomyces dermatitidis.
Habitat dan peran ekologis
Although the habitat P. brasiliensis tetap tidak diketahui, biasanya dikaitkan dengan tanah di mana kopi dibudidayakan. Penyakit yang disebabkan oleh P. brasiliensis sebagian besar terbatas secara geografis pada bahasa Latin American countries seperti Brasil, Kolombia, dan Venezuela, dengan jumlah kasus terbesar yang terlihat di Brasil. Keberadaan siklus seksual di P. brasiliensis, didukung oleh data molekuler dan morfologis. Analisis genom komparatif dengan jamur lain yang telah diteliti dengan baik menunjukkan adanya gen yang terkait dengan jenis kelamin di kedua fase ragi dan micelial P. brasiliensis. Also crosses dari isolate dari jenis kawin yang berbeda menyebabkan pembentukan askocarps muda (struktur seksual) dengan terbungkus menyengat hifa terkait dengan tahap awal kawin.
- Habitat atau konteks temuan
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- Substrat
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- Peran atau konteks
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Reproduksi
Paracoccidioides brasiliensis is a dimorphic fungus and one of the two species that cause paracoccidioidomycosis (the other being Paracoccidioides lutzii). The fungus has been affiliated with the family Ajellomycetaceae (division Ascomycota) although a sexual state or teleomorph has not yet been found. The yeast reproduces by asexual budding, where daughter cells are borne asynchronously at multiple, random positions across the cell surface. Buds begin by layers of cell wall increasing in optical density at a point that eventually gives rise to the daughter cell. Once the bud has expanded, a cleavage plane develops between the nascent cell and the mother cell. Following dehiscence, the bud scar disappears.
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.
Catatan distribusi dalam narasi mengikuti sumbernya. Dokumentasi spesimen atau foto mengikuti catatan sumber. Bukti wilayah Indonesia dan penilaian konservasi tidak disimpulkan dari gambar.
Melihat dengan konteks
Dokumentasi Paracoccidioides brasiliensis dari Wikimedia Commons. A slant culture growing the fungus Paracoccidioides brasiliensis during its yeast phase. Identifikasi mengikuti record berkas sumber.
- Jenis
- Fotografi
- Kredit
- CDC
- Lisensi
- Public domain
- Sumber media
- Buka entri sumber
Sumber profil
- [1] Paracoccidioides brasiliensis — Wikipedia (en)
- [2] Catalogue of Life Base2026-09-11 — Paracoccidioides brasiliensis
- [3] Dokumentasi visual — Paracoccidioides brasiliensis
Rujukan halaman ini
Fungi. Paracoccidioides brasiliensis. Rilis data fungi-2026-10-12-expansion-2. https://fungi-atlas.mgadib.chatgpt.site/jamur/paracoccidioides-brasiliensis/.
Status: impor sumber; pemeriksaan editorial per profil belum selesai. Untuk klaim biologis, gunakan rujukan pada bagian terkait dan periksa konteks sumber aslinya.
