Alternaria alternata
| Authors |
(Fr.) Keissl. |
| Strain |
15021 |
| Classification |
Pleosporales, Pleosporaceae, Alternaria |
| Culture collection |
BCRC FU30216 |
| Detection frequency |
Low |
| Accession number |
LC494360 |
| Figure |
 Fig. 1 5-day-old colony on PDA  Fig. 2 Alternaria alternata. a–c. Conidiophores and conidia. d. Conidia. e. Sporulation on cornmeal agar. (Bars= 5 μm, unless otherwise specified) |
| Colonies |
Colonies on PDA attaining 41-mm at 25 °C after 5 days, margins entire, cottony, grey with white margin; reverse black with white margin. |
| Conidiophores |
Conidiophores erect, arising from submerged or aerial hyphae, brown, simple or with a lateral branch, bearing 1–3 conidiogenous loci, up to 200 µm long, 3–4 µm wide. Secondary conidiophores abundant, arising apically or laterally from conidium body, up to 50 µm long, bearing 1–2 conidiogenous loci. |
| Conidiogenous cells |
Conidiogenous cells tretic, integrated, terminal, sympodial, with thickened scars. |
| Conidia |
Conidia brown, in chains, mostly echinulate, obclavate to obovoid; basal parts of conidial chain consisting of conidia with (2–)3–4 slightly constricted transverse septa and 0–1(–2) longitudinal or oblique septa per transverse sector, 20–39 × 6–10 µm; conidia near the end of chains often shorter , with 0–2 septa and no longitudinal or oblique septum; beak present on all conidia except the terminal conidia, 3–15 µm long. Primary conidial chains often comprised of 2–12 conidia bearing 1–4 lateral seconday conidial chians. Secondary conidial chians abundant, comprised of 1–7 conidia. Tertiary conidial chains sometimes observed, comprised of 1–2 conidia. |
| Note |
Strain 15021 shares 99.62%, 99.83%, 100% identities in ITS, GPD, RPB2 regions respectively with the ex-type strain of Alternaria alternata (CBS 916.96; AF347031, AY278808, KC584375). |
| Pathogenicity |
Alternaria spp. (including A. alternata) can often be found on rice seeds with high infection rates, especially on discolored grain (Ou, 1985). |
| Specimens examined |
Taiwan, Taichung City, rice grains (cultivar Taichung Native 1), Feb 2015, Jie-Hao Ou, 15021 |
| ITS |
GGAGGGATCATTACACAAATATGAAGGCGGGCTGGAATCTCTCGGGGTTACAGCCTTGCTGAATTATTCACCCTTGTCTTTTGCGTACTTCTTGTTTCCTTGGTGGGTTCGCCCACCACTAGGACAAACATAAACCTTTTGTAATTGCAATCAGCGTCAGTAACAAATTAATAATTACAACTTTCAACAACGGATCTCTTGGTTCTGGCATCGATGAAGAACGCAGCGAAATGCGATAAGTAGTGTGAATTGCAGAATTCAGTGAATCATCGAATCTTTGAACGCACATTGCGCCCTTTGGTATTCCAAAGGGCATGCCTGTTCGAGCGTCATTTGTACCCTCAAGCTTTGCTTGGTGTTGGGCGTCTTGTCTCTAGCTTTGCTGGAGACTCGCCTTAAAGTAATTGGCAGCCGGCCTACTGGTTTCGGAGCGCAGCACAAGTCGCACTCTCTATCAGCAAAGGTCTAGCATCCATTAAGCCTTTTTTCAACTTTTGACCTCGGATCAGGTAGGGATACCCGCTGAACTTAA |
| GPD |
GCCGCATTGGCCGTATCGTCTTCCGCAATGCGTAAGTTTCGCCTAACTCGTCGATACAATCTACCAGAGCTGACCGCATGCCACAGTATCGAGCACAACGACGTCGACATTGTCGCCGTAAACGACCCCTTCATCGAGCCCCACTACGCTGTAAGCTTCCCCAAGCACCCACACTACAGCCGCGGCCATCCAAGTTGCGAAAACAGTCCTTGCGATGCGCTAGAGCTCCTCTGTGGTCGCAGAATGCAGGCTAACACATTCAGGCCTACATGCTCAAGTATGACAGCACACACGGCCAGTTCAAGGGTGAGATCAAGGTTGACGGCAACAACCTGACCGTCAACGGCAAGACCATCCGTTTCCACATGGAGAAGGACCCCGCCAACATCCCATGGAGCGAGACCGGCGCTTACTACGTCGTCGAGTCCACCGGTGTCTTCACCACCACCGAGAAGGCCAAGGCTCACTTGAAGGGTGGAGCCAAGAAGGTCGTCATTTCTGCTCCCTCTGCTGACGCCCCCATGTTCGTTATGGGTGTCAACCACGAGACTTACAAGTCTGACATCGAGGTTCTCTCCAACGCCTCTTGCACAACCAACTGCCTTGCTCCCCTTGCCAAGGTTGTCCACGACAAATTCACCATCATTGAGGGTCTCATGACAACCATCCACTCCTACACTGCCACCCAGAAGGTCGTTGACGGCCCCTCCGCTAAGGACTGGCGTGGTGGCCGCACAGCTGCTCAGA |
| RPB2 |
CCGGTGTCTCCCAGGTGTTGAACCGATACACTTACGCCTCCACACTGTCACATTTGCGTCGAACGAATACCCCTGTTGGTCGTGATGGAAAGCTGGCCAAGCCGCGACAACTCCACAACTCTCATTGGGGTCTTGTCTGCCCTGCCGAGACTCCTGAAGGACAGGCTTGTGGTCTGGTTAAGAACCTGTCTTTGATGTGCTATGTTAGTGTCGGTAGTGACGCTTCTCCCATCATCGACTTCATGACACAACGAAACATGCAACTCCTAGAAGAGTATGATCAGAACCAGAACCCCGATGCCACCAAGGTCTTTGTCAACGGTGTCTGGGTTGGTGTCCATTCCAACGCTCAACAACTTGTCACAGTTGTGCAGGAGCTGCGACGAAACGGAACTCTATCCTATGAGATGAGTCTGATTCGTGACATTCGTGACCGAGAGTTCAAGATCTTCACAGATGCTGGCCGTGTCATGAGACCACTGTTCGTTGTTGAGAACGACATTCGGAAGCCAAACCGCAACCACCTCATCTTCACCAAGGAGATCAGTAACAAGCTCAAGCAGGAACAACAAGAGACAAGCACACGACAGGGTTGGAGCCAGGATGAGGTCGAATCAGCTACCTACGGCTGGAGAGGTCTTATTCAAGACGGTGTTGTGGAGTACCTAGACGCTGAAGAGGAGGAGACCGCCATGATAACGTTCTCCCCTGAGGATCTGGAGGAGTGGCGAGAGATGAAATTGGGTTTGCCGGCGGCGGAGCGATCCACCGAGGGTGAGCACCGTCTCCGACGCCTCAAGCCACTACCAGACCCCCGCATCCATGCCTATACTCATTGCGAGATTCATCCGGCTATGATTCTCGGTATCTGTGCCAGTATCATTCCCT
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