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| Web URL(s): | http://img.kisti.re.kr/soc_img/society//tsk/JDHHBF/1994/v8n1/JDHHBF_1994_v8n1_13.pdf
Last checked: 01/28/2013
Requires: PDF Reader |
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| Publication Type:
| Refereed |
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| Author(s): | Chang, N. K.;
Kim, H. B. |
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| Author Affiliation: | Chang: Department of Biology, College of Education, Seoul National University; Kim: Department of Science Education, Wonkwang University |
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| Title: | Adaptive CO2 fixation and nitrate assimilation of Portulaca oleracea in Zoysia japonica community |
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| Source: | Korean Journal of Turfgrass Science. Vol. 8, No. 1, July 1994, p. 13-18[16-21]. |
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| Publishing Information: | Korea: Turfgrass Society of Korea |
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| # of Pages: | 6 |
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| Keywords: | TIC Keywords: Photosynthesis; Nitrates; Assimilation; Portulaca oleracea; Titratable acidity; Stomatal resistance; Enzyme activity; Carbon dioxide; Zoysia japonica; Acidification; Carboxylase
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| Abstract/Contents: | Presents a study conducted to "elucidate the mechanisms by which CAM [C4 acid metabolism] activity and nitrate assimilation were occured markedly in P. oleracea stems while its leaves had little CAM activity under the natural condition." Details the materials and methods used in the study, stating that "naturally grown P. oleracea plants were sampled from a field in May [1994]. They were potted, and transferred to an open air place near the laboratory and grown for 4 weeks before experimental use." Reports that "acidity level in stems increased gradually during the night, at dawn it dropped a temporary measure and became higher remarkably till 9:00 A.M. In contrast, the acidity of deliated stems increased gradually through the night and even after dawn, and did not show a rapid increase in the morning." Concludes that "the levels of nitrate concentration and of nitrate reductase, nitrate reductase, glutamine, synthesase, glutamate synthase and glutamate dehydrogenase were higher in stems than in leaves. The levels were also higher in the light than in the dark. It would be suggested that cosiderable [considerable] amount of nitrate absorbed from roots be assimilated in stems and nitrate transferred to leaves via stem tissues be reduced there." |
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| Language: | English |
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| References: | 8 |
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| Note: | Abstract appears in Korean
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Chang, N. K., and H. B. Kim. 1994. Adaptive CO2 fixation and nitrate assimilation of Portulaca oleracea in Zoysia japonica community. Korean Journal of Turfgrass Science. 8(1):p. 13-18[16-21]. |
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| Web URL(s):
http://img.kisti.re.kr/soc_img/society//tsk/JDHHBF/1994/v8n1/JDHHBF_1994_v8n1_13.pdf
Last checked: 01/28/2013
Requires: PDF Reader |
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MSU catalog number: b5472572a |
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