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초록· 키워드
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Red rot disease has caused a major decline in Pyropia (Nori) crop production in Korea, Japan, and China. To date, only Pythium porphyrae (Pythiales, Oomycetes) has been reported as the pathogen causing red rot disease in Pyropia yezoensis (Rhodophyta, Bangiales). Recently, Pythium chondricola was isolated from the infected blades of Py. yezoensis during molecular analyses using the mitochondrial cox1 region. In this study, we evaluated the pathogenicity of P. chondricola as an algal pathogen of Py. yezoensis. Moreover, a new cox2 marker was developed with high specificity for Pythium species. Subsequent to re-inoculation, P. chondricola successfully infected Py. yezoensis blades, with the infected regions containing symptoms of red rot disease. A novel cox2 marker successfully isolated the cox2 region of Pythium species from the infected blades of Py. yezoensis collected from Pyropia aquaculture farms. cox2 sequences showed 100% identity with that of P. chondricola (KJ595354) and 98% similarity with that of P. porphyrae (KJ595377). The results of the pathogenicity test and molecular analysis confirm that P. chondricola is a new algal pathogen causing red rot disease in Pyropia species. Moreover, it could also suggest the presence of cryptic biodiversity among Korean Pythium species.
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참고문헌 (21)
참고문헌 신청
Arasaki, S / 1947 / Studies on the rot of Porphyra tenera by Pythium / Nippon Suisan Gakkaishi 13:74~90
Arasaki, S / 1968 / A comparison of some physiological aspects in a marine Pythium on the host and on the artificial medium / Bull. Misaki Mar. Biol. Inst. Kyoto Univ 12:203~206
Blouin, N. A / 2011 / Porphyra: a marine crop shaped by stress / Trends Plant Sci 16:29~37
Choi, Y. J / 2015 / Towards a universal barcode of oomycetes: a comparison of the cox1 and cox2 loci / Mol. Ecol. Resour 15:1275~1288
De Cock, A. W. A. M / 1986 / Marine Pythiaceae from decaying seaweeds in the Netherlands / Mycotaxon 25:101~110
Arasaki, S / 1968 / A comparison of some physiological aspects in a marine Pythium on the host and on the artificial medium / Bull. Misaki Mar. Biol. Inst. Kyoto Univ 12:203~206
Blouin, N. A / 2011 / Porphyra: a marine crop shaped by stress / Trends Plant Sci 16:29~37
Choi, Y. J / 2015 / Towards a universal barcode of oomycetes: a comparison of the cox1 and cox2 loci / Mol. Ecol. Resour 15:1275~1288
De Cock, A. W. A. M / 1986 / Marine Pythiaceae from decaying seaweeds in the Netherlands / Mycotaxon 25:101~110
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