• Proceedings of the Plant Resources Society of Korea Conference
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• 2007.11a
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• pp.329.1-329.1
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• 2007

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• Proceedings of the Korean Society of Plant Pathology Conference
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• 2005.04a
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• pp.78.2-79
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• 2005

• Proceedings of the Korean Society of Plant Pathology Conference
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• 2005.04a
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• pp.45.2-46
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• 2005

• Molecules and Cells
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• v.28 no.2
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• pp.131-137
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• 2009

Plant defensins are small (5-10 kDa) basic peptides thought to be an important component of the defense pathway against fungal and/or bacterial pathogens. To understand the role of plant defensins in protecting plants against the brown planthopper, a type of insect herbivore, we isolated the Brassica rapa Defensin 1 (BrD1) gene and introduced it into rice (Oryza sativa L.) to produce stable transgenic plants. The BrD1 protein is homologous to other plant defensins and contains both an N-terminal endoplasmic reticulum signal sequence and a defensin domain, which are highly conserved in all plant defensins. Based on a phylogenetic analysis of the defensin domain of various plant defensins, we established that BrD1 belongs to a distinct subgroup of plant defensins. Relative to the wild type, transgenic rices expressing BrD1 exhibit strong resistance to brown planthopper nymphs and female adults. These results suggest that BrD1 exhibits insecticidal activity, and might be useful for developing cereal crop plants resistant to sap-sucking insects, such as the brown planthopper.

• Proceedings of the Korean Society of Plant Pathology Conference
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• 2002.11a
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• pp.81.1-81
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• 2002

• Research in Plant Disease
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• v.11 no.2
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• pp.89-92
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• 2005

In 2004, average temperature was higher, and rainfall was less than those of previous year, The diseases of rice, barley, pepper, chinese melon, apple and oriental pear were surveyed. Seedling diseases, leaf blast, sheath blight and bacterial blight of rice, phytophthova blight, virus diseases and anthracnose of pepper, and sudden wilt syndrome and powdery mildew of chinese melon grown in plastic greenhouse were severe. Especially, sheath blight and bacterial blight of rice occurred two times higher than those of previous year, Panicle blight of rice decreased about 4 times, compared with the previous year, presumed that the lower rainy days, rainfall and RH suppressed spread of the fungal pathogens to panicles of rice. Lower rainfall during mid- and late Aug caused three-times less occurrence of phytophtora blight of red-pepper than that of the previous year, Another diseases surveyed occurred similar or less than those of the previous year.

• Proceedings of the Korean Society of Plant Pathology Conference
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• 2005.04a
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• pp.50.1-50.1
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• 2005

• Bulletin of the Korean Chemical Society
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• v.34 no.5
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• pp.1541-1542
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• 2013

• Plant Resources
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• v.8 no.3
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• pp.258-262
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• 2005

In autumn, to determine the optimal planting date and plant density of rapeseed in southern areas of Korea, Yudal variety for autumn sowing, the highest yielding variety was grown under three different planting dates and five different plant densities. Yield components such as plant height, ear length, number of seedling stand per $m^2$, number of branches and pod length were highest at the plots with Sep. 30 of planting date and 30/20 cm drilling of plant density. Yield of seed, oil and 1,000 grains weight were highest at the Sep.30 of planting date and 30/20 cm drilling of plant density. Judging from the results reported above, at optimum planting date and plant density of rapeseed seemed to be Sep.30 of planting date and 30/20cm plant density in autumn sowing.

• The Plant Pathology Journal
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• v.26 no.2
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• pp.110-114
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• 2010

WRKY transcription factors are known to be involved in many different biological processes including plant response to biotic stress, abiotic stress, and plant development. WRKY proteins are extensively studied in Arabidopsis. Recently, reports on WRKY proteins are rapidly increasing in the other plant species, especially in rice. Therefore, this review will discuss the function of rice WRKY proteins reported so far.