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Effect of 1-Nitronaphthalene on Lipids in Germinating Wheat (Triticum aestivum)

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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/

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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 

‑NN, but the growth was inhibited by treatment 25 and 50 ppm 1 ‑NN, In the  8hoot, the yield of neutrallipids in concentration  (1and 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 183‑18: 3 ‑PE, 18: 2 ‑18: 3 ‑PE and 18: 2 ‑18: 2 ‑PE in the shoot  and root were higher ththoseof 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 contaminants1S),  many of which are known to be mutagenic and  carcinogenic. 6) AHs are formed at the elevat  ed  temperature  (8

OC)  occurring  with  com 

bustion 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,  considerable number have direct mutagenicity  and carcinogenicity for  animals. 7)  In  particu

lar, ‑nitronaphthalene  (1 ‑NN) has muta‑

Department of Bioresource Chemistry, Obihiro University of Agriculture and Veterinary Medicine,  Obihiro, Hokkaido 080, Japan 

71 

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