• 제목/요약/키워드: bacterial grain rot

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Burkholdera glumae에 의한 벼의 세균성 잎집썩음 증상의 발생 (Occurrence of the Bacterial Sheath Rot of Rice Plant by Burkholderia glumnae)

  • 임진우
    • 식물병과 농업
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    • 제5권2호
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    • pp.111-114
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    • 1999
  • A bacterial disease of rice plant that rotted the sheath to brown was found in rice plants at Tanbuk Uisong Kyungbuk in June 1999, When the bacterial isolates from the diseased rice plants were inoculated to health plant by the artificial needle prick method the same symptoms were examined. According to its characteristics and pathogenicity on the his plant the causal bacterium was identified as Burkholderia glumae which is known as the pathogen of bacterial grain rot of rice.

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Relation between Disease Incidence of Bacterial Grain Rot of Rice and Weather Conditions

  • Noh, Tae-Hwan;Kim, Hyung-Moo;Song, Wan-Yeob;Lee, Du-ku;Kang, Mi-Hyung;Shim, Hyeong-Kwon
    • Plant Resources
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    • 제7권1호
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    • pp.36-38
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    • 2004
  • Bacterial grain rot of rice caused by Burkholderia glumae was examined between weather condition and disease incidence. From 1998 to 2000, average disease incidence was 3.0 % without difference in survey regions. However, it was related closely to amount of rainfall that disease incidence higher in 1998 and 2000 to 3.0 % and 3.6 % respectively than 2.3 in 1999 relatively small volum of rainfall season.

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세균성 벼알마름병의 연구동향 (Current Status of Bacterial Grain Rot of Rice in Korea)

  • 송완엽;김형무
    • 식물병과 농업
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    • 제5권1호
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    • pp.1-7
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    • 1999
  • The grain rot of caused by Bukholderia glumae was fist reported in japan in 1955 and then reported in other countries as well as in Korea in 1986. The pathogen causes both seedling and grain rot of rice but it cannot attack any other parts of adult rice plant. Bacterial colonies grow slowly, and are circular and greyish white. The causal bacterium is Gram-negative and rod shape with 1-3 polar flagella, and produce a diffusible yellow-greenish nonfluorescent pigment on King's medium B. Biochemical characteristics such as negative in arginine dehydrolase, oxidase reaction and nitrate reduction and positive in lecithinase, and the utilization of L-arginine and inositol are useful in differentiation of this from other nonfluorescent bacteria pathogenic to rice. This pathogenic bacterium had belonged to the genus of Pseudomonas but recently was transferred to the new genus Burkholderia on the basis of physiological characteristics and DNA-DNA hybridization data. However, other characteristics such as colony heterogenicity or colonial variation after subcultures, phytotoxin, secreting antibiotics, and relationship between yellow greenish pigment production and pathogenicity need to be clarified more. To develop an effective control strategy for this disease, understanding of detailed life cycle of the disease and critical environmental factors affecting disease development is prerequisite. Although 5,435 ha of rice paddy in Korea was infested during 1998, there is no exact estimation of yield losses and distribution of the pathogen. The review will focus on recent progress on the understanding of the bacteriological and ecological characteristics of the causal bacterium and control means of the disease.

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Occurrence of Burkholderia glumae on Rice and Field Crops in Korea

  • Kim, Jin-Woo;Kang, Yong-Sung;Kim, Jung-Gun;Choi, Ok-Hee;Hwang, In-Gyu
    • The Plant Pathology Journal
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    • 제26권3호
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    • pp.271-272
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    • 2010
  • Burkholderia glumae causes bacterial rice grain rot and bacterial wilt on many field crops. We developed a simple diagnostic streak method for the isolation of B. glumae from diseased plant material. The geographical distribution of 178 Korean isolates shows that B. glumae is widely spread in South Korea.

출수기 기상환경이 세균성 벼알마름병 발생에 미치는 영향 (Influence of Weather Condition at Heading Period on the Development of Rice Bacterial Grain Rot Caused by Burkholderia glumae)

  • 차광홍;이용환;고숙주;박서기;박인진
    • 식물병연구
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    • 제7권3호
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    • pp.150-154
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    • 2001
  • 세균성벼알마름병의 발생 예측 모델을 만들기 위하여 출수기의 기상 환경과 병 발생과의 관계를 자료분석(1992~2000)과 온실 및 포장시험을 통해 조사하였다. 세균성벼알마름병의 발생이 많은 해는 '94, '95, '98, 2000년이었고, 중만생종 출수기인 8월 상.중순에 고온이 지속되면서 연속강우가 많았다. 반면 병 발생이 적었던 '93년은 강우량과 강우일수는 많았으나 저온이었고, '97년에는 온도는 높았으나 강우가 적은 경향이었다. 출수기에 접종 후 습실처리 하였을 때(24시간 이상) $10^2$cfu/ml에서부터 발병하기 시작하여 접종농도가 높을수록 발병도가 높아져 $10^{8}$ cfu/ml에서는 86.1%의 발병도를 보였다. 습실처리를 하지 않은 경우에는 $10^{8}$ cfu/ml에서만 12.5% 발병하였다. 또한 발병도가 증가함에 따라 천립중과 등숙률이 현저히 감소하였다.

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Disease Ecology and Forecasting of Rice Bacterial Grain Rot

  • Cha, Kwang-Hong;Lee, Yong-Hwan;Ko, Sug-Ju;Ahn, Woo-Yeop;Kim, Young-Cheol
    • 한국식물병리학회:학술대회논문집
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    • 한국식물병리학회 2003년도 정기총회 및 추계학술발표회
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    • pp.24-24
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    • 2003
  • Since Rice bacterial grain rot (RGBR) was reported at 1986 in Korea, it has been severely occurred in 1994, 1995, 1998, and especially around 16,609 ha in 2000, and became a major disease in rice cultivation field. This study was focused on investigation of ecology of RGBR, weather conditions that affect development of epidemics, and development of an effective RGBR forecast system based on weather conditions during the rice heading period.(중략)

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