• Title/Summary/Keyword: plant diseases

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Soilborne Diseases of Mulberry and their Management

  • Sharma, D.D.;Naik, V.Nishitha;Chowdary, N.B.;Mala, V.R.
    • International Journal of Industrial Entomology and Biomaterials
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    • v.7 no.2
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    • pp.93-106
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    • 2003
  • Soilborne diseases pose a serious problem for mulberry cultivation during nursery plantation and established gardens, which cause severe loss in revenue generation of mulberry growers as compared to foliar diseases. Various soilborne diseases affect mulberry. Among them, root knot and root rot affect the established plantation resulting in severe loss in leaf yield apart from deterioration in leaf quality, which is a pre-requisite in successful sericulture to get the good quality of cocoons. Besides, stem-canker, cutting rot, collar rot and die-back, affect the initial establishment and survivability of mulberry plantation in nursery. The problem is difficult to handle, due to the complex nature of the diseases and also involvement of various biotic and abiotic factors. This is compounded by the occurrence of disease complex (especially nematode + soilborne pathogenic microbes) in established mulberry gardens, which facilitates quick spread of the disease and enhance the plant mortality, resulting substantial loss in leaf yield. Therefore, prevention and timely control measures need to be taken up to protect the mulberry plants from different soilborne plant pathogens. In this review article, symptomatology, epidemiology, disease cycle and control measures of soilborne diseases of mulberry are discussed.

Review of Disease Incidences of Major Crops of the South Korea in 2005 (2005년 주요 농작물 병해 발생개황)

  • Myung, Inn-Shik;Hong, Sung-Kee;Lee, Young-Kee;Choi, Hyo-Won;Shim, Hong-Sik;Park, Jin-Woo;Park, Kyung-Seok;Lee, Sang-Yeop;Lee, Seong-Don;Lee, Su-Heon;Choi, Hong-Su;Kim, Yong-Gi;Shin, Dong-Bum
    • Research in Plant Disease
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    • v.12 no.3
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    • pp.153-157
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    • 2006
  • In 2005, average temperature was lower, and average rainfall was less than those of previous year. The diseases of rice, barley, pepper, chinese melon, apple and oriental pear were surveyed. Bacterial blight, bacterial grain rot, and panicle disease of rice, black rot of pear, and white rot and bitter rot of apple were severe. Especially, brown rot of rice occurred four times higher than those of previous year. Panicle blight of rice increased about 3 times, compared with the previous year, presumed that the higher rainy days, rainfall and RH promoted spread of the fungal pathogens to panicles of rice. The diseases of rice leaf blast, sudden wilt syndrome, downy mildew and powdery mildew of chinese melon in plastic greenhouse, and virus diseases of hot pepper occurred distinctly less than those of the previous year. Another diseases surveyed occurred similar or less.

Draft Genome Sequence of a Chitinase-Producing Biocontrol Bacterium, Lysobacter antibioticus HS124

  • Gardener, Brian B. McSpadden;Kim, In Seon;Kim, Kil Yong;Kim, Young Cheol
    • Research in Plant Disease
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    • v.20 no.3
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    • pp.216-218
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    • 2014
  • Lysobacter antibiocus HS124 is a chitinase-producing rhizobacterium with proven capacities to suppress plant diseases. Bacterial cultures of L. antibioticus HS124 showed strong biocontrol efficacies against various plant diseases compared to those of bacterial cultures of Bacillus subtilis QST713 which is an active ingredient of a commercial biopesticide, Serenade. Here, we report the draft genome sequence and automated annotation of strain HS124. This draft genome sequence indicates the novelty of L. antibiocus HS124 and a subset of gene functions that may be related to its biocontrol activities.