• Journal of Crop Science and Biotechnology
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• v.11 no.4
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• pp.227-232
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• 2008

Drought stress is one of the major abiotic stresses in agriculture worldwide. We report here a proteomic approach to investigate the impact of post-fertilization drought on grain quality in rice seed endosperm (Oryza sativa cv. IR-64). Plants were stressed for 4 days at 3 days before heading. Total proteins of endosperm were extracted and separated by two-dimensional gel electrophoresis. Not many protein spots showed differential accumulation in drought-stressed samples. More than 400 protein spots were reproducibly detected, including three that were up-regulated and five down-regulated. Mass spectrometry analysis and database searching helped us to identify six spots representing different proteins. Functionally, the identified proteins were related to protein synthesis and carbohydrate metabolism, such as Granule-Bound Starch Synthase (GBSS, Wx protein), which is thought to play a very important role in starch biosynthesis and quality, a very crucial factor in determining rice grain quality.

• KOMUNHWA
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• no.57
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• pp.25-39
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• 2001

Carbonized wheat(Triticum aestivum), barley(Horudeum vulgare) and rice (Oryza sativa) grams were excavated at the AD 3C. old site in Nook-Do Kyungsang-South province. By the sieve floating method 180 grains of wheat, 4 grains of barley and 6 grains of ric

• Korean Journal of Plant Resources
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• v.7 no.1
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• pp.97-101
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• 1994

The effects of NaCl salinity on the leaf photosynthesis and water relation of two cultivars of rice(Oryza sativa L.) , the salt-tolerant cultivar Seohae and the salt-senstive cultivar Iri-380 were exam-ined. Two cultivars of rice were grown for 14 days in nutrient solution at SOmM NaCl. Comparing theieaf Na content of two cultlvars, Seohae showed high accumulation of Na content in the leaf blade, while Iri-380 showed low. The Na content in leaf blade reduced the rate of leaf photosynthesis. Salt-tolerant cultivar Seohae was less decreased the rate of leaf photosynthesis than salt- sensitive cultivarIri-380. And Seohae showed larger decreased the osmotic potential in the leaves than Iri-380. This in-dicates that in the salt-tolerant cultivar, osmotic adjustment is developed under saliniEation.

• Natural Product Sciences
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• v.13 no.4
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• pp.373-377
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• 2007

Antiscratching behavioral effects of the water extract of two black colored rice (BCR) varieties [Oryza sativa L. cv. Heugjinjubyeo (HJ) and Josaengheugchalbyeo (JH)], major pigment of which is cyanindin 3-glucoside, were investigated. Orally administered BCRs' extracts exhibited potent inhibitory activity against scratching behaviors which were induced by compound 48/80 and histamine. The inhibitory effect of Josaengheugchalbyeo in vivo and in vitro were more potent than those of Heugjinjubyeo. These finding suggest that black colored rice, especially Josaengheugchalbyeo, may inhibit scratching behaviors and anaphylaxis reaction by stabilizing membrane.

• Proceedings of the Korean Society of Crop Science Conference
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• 2000.04a
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• pp.62-63
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• 2000

• Proceedings of the Korean Society of Crop Science Conference
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• 2000.04a
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• pp.64-65
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• 2000

• Proceedings of the Korean Society of Crop Science Conference
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• 2000.04a
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• pp.38-39
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• 2000

• Proceedings of the Korean Society of Plant Biotechnology Conference
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• 2005.04a
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• pp.142-142
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• 2005

• 한국생물공학회:학술대회논문집
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• 2005.10a
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• pp.999-999
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• 2005

• Proceedings of the Korean Society of Potoscience Conference
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• 2006.06a
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• pp.23-23
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• 2006