01 / Morfologi

Ciri dan struktur

Alternaria Leaf Blight is a foliar disease of carrots caused by the fungus Alternaria dauci. Alternaria dauci is included in the porri species group of Alternaria, which is classified for having large conidium and a long, slender filiform beak. Because many of the members of this group have similar morphology, Alternaria dauci has also been classified as formae specialis of carrots, or A. porri f. sp. dauci. Despite their findings, reports of A. dauci colonization on non-carrot hosts continues to be debated because the use of Koch's Postulates on recovered isolates of A. dauci is challenging and is rarely reported; in addition, few reports are often made of such infections in field settings. The lesions can be irregularly shaped, and will often appear on older leaves first. Older leaves are the most susceptible to infection; when approximately 40% of the leaf surface area has become infected by Alternaria dauci, the leaf will completely yellow, collapse, and die. It is during extended conditions of warm, moist weather that lesions can coalesce and cause entire tops of carrot plants to die off, a phenomenon that is sometimes mistaken for frost damage. The symptoms of this disease are also commonly confused with Cercospora Leaf Blight of carrots as well as bacterial blight, and microscopic analysis is frequently needed to accurately diagnose the pathogen. A. dauci produces characteristically dark to olive-brown hyphae and elongated conidiophores, with conidia typically borne singly. Petiole infection can also occur without any lesion development on leaflets, and A. dauci can additionally result in damping-off of seedlings, seed stalk blight, and inflorescence infections.

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Rujukan: [1]

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

02 / Kehidupan

Habitat dan peran ekologis

Alternaria Leaf Blight is penyakit daun wortel yang disebabkan oleh jamur Alternaria dauci. Alternaria dauci termasuk dalam kelompok spesies porri Alternaria, yang diklasifikasikan karena memiliki konidium besar dan bihun panjang dan ramping filiform. Because many dari anggota kelompok ini memiliki morfologi yang sama, Alternaria dauci juga diklasifikasikan sebagai formae specialis dari wortel, atau A. porri f. sp. dauci. Penemuan Despite their, laporan kolonialisasi A. dauci pada inang non-karot terus diperdebatkan karena penggunaan isolate A. dauci yang dipetik Postulates on oleh Koch sulit dan jarang dilaporkan; selain itu, jarang ada laporan infeksi semacam itu dalam pengaturan lapangan. Lesi dapat berbentuk tidak teratur, dan sering kali muncul pada daun yang lebih tua terlebih dahulu. Older leaves paling rentan terhadap infeksi; ketika sekitar 40% dari permukaan daun telah terinfeksi oleh Alternaria dauci, daun akan menjadi kuning, runtuh, dan mati. Saat cuaca hangat dan lembab, lesi dapat bergabung dan menyebabkan seluruh puncak tanaman wortel mati, fenomena yang kadang-kadang dianggap salah dengan kerusakan akibat es. Gejala penyakit ini juga sering kali bingung dengan wortel Daun Cercospora Blight of serta penyakit bakteri, dan seringkali perlu analisis mikroskopis untuk mendiagnosis patogen dengan akurat.

Rujukan: [1]

Habitat atau konteks temuan
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Substrat
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Temukan hubungan serupa
03 / Siklus hidup

Reproduksi

Alternaria Leaf Blight is a foliar disease of carrots caused by the fungus Alternaria dauci. Alternaria dauci is included in the porri species group of Alternaria, which is classified for having large conidium and a long, slender filiform beak. Because many of the members of this group have similar morphology, Alternaria dauci has also been classified as formae specialis of carrots, or A. porri f. sp. dauci. Despite their findings, reports of A. dauci colonization on non-carrot hosts continues to be debated because the use of Koch's Postulates on recovered isolates of A. dauci is challenging and is rarely reported; in addition, few reports are often made of such infections in field settings.

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

Rujukan: [1]

Sinonim menurut acuan taksonomi rilis: Alternaria brassicae var. dauci; Alternaria carotae; Macrosporium carotae; Macrosporium dauci; Sporidesmium exitiosum var. dauci
04 / Batas informasi

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.

05 / Dokumentasi

Melihat dengan konteks

Pelat ilmiah Alternaria dauci yang memperlihatkan koloni, konidiofor, dan konidia. Identifikasi dan keterangan mengikuti Gambar 2 pada sumber.

Jenis
Pelat ilmiah
Kredit
Khalid M Ghoneem; Abdulaziz A Al-Askar; Seham M A El-Gamal; Ehsan M Rashad; Elsherbiny A Elsherbiny; Shafik D Ibrahim; Samy A Marey; WesamEldin I A Saber
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.

06 / Rujukan

Sumber profil

  1. [1] Alternaria dauci — Wikipedia (en)Bagian sumber: Frozen revision 1311908674
    Tanggal penghimpunan sumber: 2026-10-12
    Teks sumber: CC BY-SA4.0 · Wikipedia contributors
  2. [2] Catalogue of Life Base2026-09-11 — Alternaria dauciBagian sumber: ColDP NameUsage.tsv ID 669Z5; accepted species; source 2073
    Tanggal penghimpunan sumber: 2026-10-12
  3. [3] Dokumentasi visual — Alternaria dauciBagian sumber: Identitas mengikuti sumber dokumentasi; bukan penentuan spesimen independen.
    Tanggal penghimpunan sumber: 2026-10-17
    Media sumber: CC BY 4.0 · Khalid M Ghoneem; Abdulaziz A Al-Askar; Seham M A El-Gamal; Ehsan M Rashad; Elsherbiny A Elsherbiny; Shafik D Ibrahim; Samy A Marey; WesamEldin I A Saber

Adaptasi teks: CC BY-SA 4.0. Wikipedia contributors — Alternaria dauci — Wikipedia (en)

Uraian asli dan riwayat sumber

Riwayat atau halaman sumber

Ringkasan sumber

Alternaria Leaf Blight is a foliar disease of carrots caused by the fungus Alternaria dauci. Alternaria dauci is included in the porri species group of Alternaria, which is classified for having large conidium and a long, slender filiform beak. Because many of the members of this group have similar morphology, Alternaria dauci has also been classified as formae specialis of carrots, or A. porri f. sp. dauci. Despite their findings, reports of A. dauci colonization on non-carrot hosts continues to be debated because the use of Koch's Postulates on recovered isolates of A. dauci is challenging and is rarely reported; in addition, few reports are often made of such infections in field settings.

Revisi sumber

Morfologi sumber

Alternaria Leaf Blight is a foliar disease of carrots caused by the fungus Alternaria dauci. Alternaria dauci is included in the porri species group of Alternaria, which is classified for having large conidium and a long, slender filiform beak. Because many of the members of this group have similar morphology, Alternaria dauci has also been classified as formae specialis of carrots, or A. porri f. sp. dauci. Despite their findings, reports of A. dauci colonization on non-carrot hosts continues to be debated because the use of Koch's Postulates on recovered isolates of A. dauci is challenging and is rarely reported; in addition, few reports are often made of such infections in field settings. The lesions can be irregularly shaped, and will often appear on older leaves first. Older leaves are the most susceptible to infection; when approximately 40% of the leaf surface area has become infected by Alternaria dauci, the leaf will completely yellow, collapse, and die. It is during extended conditions of warm, moist weather that lesions can coalesce and cause entire tops of carrot plants to die off, a phenomenon that is sometimes mistaken for frost damage. The symptoms of this disease are also commonly confused with Cercospora Leaf Blight of carrots as well as bacterial blight, and microscopic analysis is frequently needed to accurately diagnose the pathogen. A. dauci produces characteristically dark to olive-brown hyphae and elongated conidiophores, with conidia typically borne singly. Petiole infection can also occur without any lesion development on leaflets, and A. dauci can additionally result in damping-off of seedlings, seed stalk blight, and inflorescence infections.

Revisi sumber

Ekologi sumber

Alternaria Leaf Blight is a foliar disease of carrots caused by the fungus Alternaria dauci. Alternaria dauci is included in the porri species group of Alternaria, which is classified for having large conidium and a long, slender filiform beak. Because many of the members of this group have similar morphology, Alternaria dauci has also been classified as formae specialis of carrots, or A. porri f. sp. dauci. Despite their findings, reports of A. dauci colonization on non-carrot hosts continues to be debated because the use of Koch's Postulates on recovered isolates of A. dauci is challenging and is rarely reported; in addition, few reports are often made of such infections in field settings. The lesions can be irregularly shaped, and will often appear on older leaves first. Older leaves are the most susceptible to infection; when approximately 40% of the leaf surface area has become infected by Alternaria dauci, the leaf will completely yellow, collapse, and die. It is during extended conditions of warm, moist weather that lesions can coalesce and cause entire tops of carrot plants to die off, a phenomenon that is sometimes mistaken for frost damage. The symptoms of this disease are also commonly confused with Cercospora Leaf Blight of carrots as well as bacterial blight, and microscopic analysis is frequently needed to accurately diagnose the pathogen.

Revisi sumber

Struktur reproduksi sumber

Alternaria Leaf Blight is a foliar disease of carrots caused by the fungus Alternaria dauci. Alternaria dauci is included in the porri species group of Alternaria, which is classified for having large conidium and a long, slender filiform beak. Because many of the members of this group have similar morphology, Alternaria dauci has also been classified as formae specialis of carrots, or A. porri f. sp. dauci. Despite their findings, reports of A. dauci colonization on non-carrot hosts continues to be debated because the use of Koch's Postulates on recovered isolates of A. dauci is challenging and is rarely reported; in addition, few reports are often made of such infections in field settings.

Revisi sumber

Rujukan halaman ini

Fungi. Alternaria dauci. Rilis data fungi-2026-10-12-expansion-2. https://fungi-atlas.mgadib.chatgpt.site/jamur/alternaria-dauci/.

Status: impor sumber; pemeriksaan editorial per profil belum selesai. Untuk klaim biologis, gunakan rujukan pada bagian terkait dan periksa konteks sumber aslinya.