Effect of 1‑Nitronaphthalene on Lipids in Germinating Wheat (Triticum aestivum)
その他(別言語等)
のタイトル
発芽小麦中の脂質に対する1‑ニトロナフタレンの影 響
著者(英) Fukushima Michihiro, Okumura Masaru, Nakano Masuo, Negishi Takashi
journal or
publication title
Research bulletin of Obihiro University.
Natural science
volume 18
number 3
page range 183‑192
year 1993‑10‑25
URL http://id.nii.ac.jp/1588/00001963/
Res. Bull. Obihiro Univ., 18 (1993): 183‑192
E f f e c t o f 1 ‑Nitronaphthalene on L i p i d s i n Germinating Wheat
(Triticum aestivum)ν1ichihiro FUKUSHIMA1, Masaru OKUMURAI, Masuo NAKANO' and Takashi NEGJSHI'
(Receive : May 27, 1993)
Abstract
Wheat plants were germinated under artifical ilIumination with various concen~
trations of 1 ‑nitronaphthalene (1 ‑NN) water solutions (0, 10, 25 and 5uppm).
After seven days, germinating wheats were separated into shoot, root and endosperm, The highest germination ratio of wheat seeds was shown after treatment with 10 ppm
1 ‑NN, but the growth was inhibited by treatment 25 and 50 ppm 1 ‑NN, In the 8hoot, the yield of neutrallipids in concentration (10 and 25 ppm) of 1 ‑NN treat ments increased compared to the control, and glycolipid concentrations in 10 and 25 ppm 1 ‑NN groups decreased than that of the control group. Sterol ester propor tions in the shoot and root with 1 ‑NN treatments increased and free sterol propor tions in the shoot and root decreased compared to the control. The high proportion of linolenic acid was contained in glycolipids or phospholipids of the shoot with 1 ‑ NN treatments as compared to the controls. For 50 ppm 1 ‑NN treatment, the pro portions of 18・3‑18: 3 ‑PE, 18: 2 ‑18: 3 ‑PE and 18: 2 ‑18: 2 ‑PE in the shoot and root were higher th田 thoseof the control group, respectively. The concentra tions of total chlorophyll and chlorophyll a were elevated by treatment with 10 and 25
ppm 1 ‑NN and reduced by treatment with 50 ppm 1 ‑NN group. The concentra tion of 1 ‑naphthylamine was higher than that of 1 ‑NN in each part.
Key words: 1 ‑nitronaphthalene ; germinating wheat ; lipid ; chlorophyll; 1 ‑naph‑
thylamine
183
Introduction
Polycyc1ic aromatic hydrocarbons' CP AHs) are a group of environmental contaminants1‑S), many of which are known to be mutagenic and carcinogenic. 6) P AHs are formed at the elevat ed temperature (8
∞
OC) occurring with combustion processes. 6) Moreover, potent mutagens are derived from nitrification of PAHs and they are called nitrated polycyclic aromatic hydro‑ carbons Cnitro‑PAHs). Of these nitro‑PAHs, a considerable number have direct mutagenicity and carcinogenicity for animals. 7) In particu・
lar, 1 ‑nitronaphthalene (1 ‑NN) has muta‑
1 Department of Bioresource Chemistry, Obihiro University of Agriculture and Veterinary Medicine, Obihiro, Hokkaido 080, Japan
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