L‐3,4‐Dihydroxyphenyla1anine(L‐DOPA)によるキュウリ幼植物の生育阻害作用の特性

Translated title of the contribution: Characteristics of Growth Inhibitory Effect of L-3, 4-Dihydroxyphenylalanine (L-DOPA) on Cucumber Seedlings.

中嶋 直子, 平舘 俊太郎, 藤井 義晴

Research output: Contribution to journalArticle

Abstract

When cucumber seeds were sown on agar containing L-3, 4-dihydroxyphenylalanine (L-DOPA), the growth of cucumber seedlings was strongly inhibited by L-DOPA immediately after sowing. However, they recovered from the inhibitory effect of L-DOPA 12 days after sowing. Throughout the experimental period, blacking of agar was observed in the medium containing L-DOPA due to chemical alteration of L-DOPA in agar associated with a polymerization reaction. In the roots of cucumber seedlings treated with L-DOPA, accumulation of L-DOPA and free amino acids was observed compared with the control. Especially, the amount of tyrosine and phenylalanine with a similar chemical structure to that of L-DOPA increased remarkably.<br>It was assumed that the increase was due to the metabolim of L-DOPA to other harmless amino acids. This transformation of L-DOPA could be one of the detoxification mechanisms responsible for the recovery from the inhibitory effects of L-DOPA.
Original languageJapanese
Pages (from-to)132-138
Number of pages7
Journal雑草研究
Volume44
Issue number2
DOIs
Publication statusPublished - 1999

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L-dopa
cucumbers
seedlings
agar
sowing
phenylalanine
polymerization
chemical structure
free amino acids
tyrosine

Cite this

@article{638e8efd2b4d4c90be78ee2e19b4e02d,
title = "L‐3,4‐Dihydroxyphenyla1anine(L‐DOPA)によるキュウリ幼植物の生育阻害作用の特性",
abstract = "When cucumber seeds were sown on agar containing L-3, 4-dihydroxyphenylalanine (L-DOPA), the growth of cucumber seedlings was strongly inhibited by L-DOPA immediately after sowing. However, they recovered from the inhibitory effect of L-DOPA 12 days after sowing. Throughout the experimental period, blacking of agar was observed in the medium containing L-DOPA due to chemical alteration of L-DOPA in agar associated with a polymerization reaction. In the roots of cucumber seedlings treated with L-DOPA, accumulation of L-DOPA and free amino acids was observed compared with the control. Especially, the amount of tyrosine and phenylalanine with a similar chemical structure to that of L-DOPA increased remarkably.It was assumed that the increase was due to the metabolim of L-DOPA to other harmless amino acids. This transformation of L-DOPA could be one of the detoxification mechanisms responsible for the recovery from the inhibitory effects of L-DOPA.",
author = "直子 中嶋 and 俊太郎 平舘 and 義晴 藤井",
year = "1999",
doi = "10.3719/weed.44.132",
language = "Japanese",
volume = "44",
pages = "132--138",
journal = "雑草研究",
issn = "0372-798X",
publisher = "日本雑草学会",
number = "2",

}

TY - JOUR

T1 - L‐3,4‐Dihydroxyphenyla1anine(L‐DOPA)によるキュウリ幼植物の生育阻害作用の特性

AU - 中嶋, 直子

AU - 平舘, 俊太郎

AU - 藤井, 義晴

PY - 1999

Y1 - 1999

N2 - When cucumber seeds were sown on agar containing L-3, 4-dihydroxyphenylalanine (L-DOPA), the growth of cucumber seedlings was strongly inhibited by L-DOPA immediately after sowing. However, they recovered from the inhibitory effect of L-DOPA 12 days after sowing. Throughout the experimental period, blacking of agar was observed in the medium containing L-DOPA due to chemical alteration of L-DOPA in agar associated with a polymerization reaction. In the roots of cucumber seedlings treated with L-DOPA, accumulation of L-DOPA and free amino acids was observed compared with the control. Especially, the amount of tyrosine and phenylalanine with a similar chemical structure to that of L-DOPA increased remarkably.It was assumed that the increase was due to the metabolim of L-DOPA to other harmless amino acids. This transformation of L-DOPA could be one of the detoxification mechanisms responsible for the recovery from the inhibitory effects of L-DOPA.

AB - When cucumber seeds were sown on agar containing L-3, 4-dihydroxyphenylalanine (L-DOPA), the growth of cucumber seedlings was strongly inhibited by L-DOPA immediately after sowing. However, they recovered from the inhibitory effect of L-DOPA 12 days after sowing. Throughout the experimental period, blacking of agar was observed in the medium containing L-DOPA due to chemical alteration of L-DOPA in agar associated with a polymerization reaction. In the roots of cucumber seedlings treated with L-DOPA, accumulation of L-DOPA and free amino acids was observed compared with the control. Especially, the amount of tyrosine and phenylalanine with a similar chemical structure to that of L-DOPA increased remarkably.It was assumed that the increase was due to the metabolim of L-DOPA to other harmless amino acids. This transformation of L-DOPA could be one of the detoxification mechanisms responsible for the recovery from the inhibitory effects of L-DOPA.

U2 - 10.3719/weed.44.132

DO - 10.3719/weed.44.132

M3 - 記事

VL - 44

SP - 132

EP - 138

JO - 雑草研究

JF - 雑草研究

SN - 0372-798X

IS - 2

ER -