• Title/Summary/Keyword: Solanum tuberosum

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Black Leg of Potato Plants by Erwinia carotovora subsp. atroseptica (Erwinia carotovora subsp. atroseptica에 의한 감자 흑각병)

  • 박덕환;김준섭;이흥구;함영일;임춘근
    • Plant Disease and Agriculture
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    • v.5 no.1
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    • pp.64-66
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    • 1999

  • Black leg occurred in potato (Solanum tuberosum L.) grown in Pyungchang, Kangwon-Do, Korea. The symptoms began as small water-soaked lesions on stem, and the affected stems discolored black to brown. It became yellow under dry condition. When lower parts of potato were affected in the field, wilting of leaves and desiccation of the stem were developed. The causal organism was isolated from lesions and identified as Erwinia carotovora subsp. atroseptica based on the morphological, physiological and biochemical characteristics. E. carotovora subsp. atroseptica is the first described bacterium which causes black leg in potato in Korea.

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Occurrence of Potato Witches' Broom Caused by a Phytoplasma in Korea (파이토플라스마에 의한 감자빗자루병 발생)

  • 함영일;류경열;조일찬
    • Research in Plant Disease
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    • v.7 no.2
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    • pp.116-119
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    • 2001

  • Witches' broom symptoms were firstly found on tubers of Solanum tuberosum cv, Deijima, showing dense growth of spindly sprouts in Cheju province, Korea. Plantlets from the diseased plants also produced the typical witches' broom symptoms, having densely-growing small leaves when they became adult plants. At the later stages the diseased leaves were blightened. Presence of phytoplasma in plant tissues was confirmed by DAPI-staining fluorescence microscopy and electron microscopy, exhibiting its localization in sieve tubes of stem, petiole, and midrib. This is the first report of potato witches' broom in Korea.

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