Allelopathic substance exuded from a serious weed, germinating barnyard grass (Echinochloa crus-galli L.), roots

T. Yamamoto; K. Yokotani-Tomita; S. Kosemura; S. Yamamura; K. Yamada; K. Hasegawa

doi:10.1007/PL00007050

Allelopathic substance exuded from a serious weed, germinating barnyard grass (Echinochloa crus-galli L.), roots

T. Yamamoto, K. Yokotani-Tomita, S. Kosemura, S. Yamamura, K. Yamada, K. Hasegawa

Faculty of Law

Research output: Contribution to journal › Article › peer-review

20 Citations (Scopus)

Abstract

The allelopathy of a serious weed, barnyard grass (Echinochloa crus-galli L.), was investigated. Root exudates of young barnyard grass showed allelopathic effects and plant-selective activity and inhibited root elongation of all plants tested. With respect to shoot growth, the exudates did not show inhibition of barnyard grass only. The allelopathic substance was isolated and identified as p-hydroxymandelic acid by NMR. pHydroxymandelic acid strongly inhibited shoot growth and root elongation of all plants tested. The effects of three congeners of p-hydroxymandelic acid were tested on rice shoot growth. In the biological activity exhibited in rice, shoot growth was related to the hydroxyl groups.

Original language	English
Pages (from-to)	65-67
Number of pages	3
Journal	Journal of Plant Growth Regulation
Volume	18
Issue number	2
DOIs	https://doi.org/10.1007/PL00007050
Publication status	Published - 1999 Jan 1

Keywords

Allelopathic substance
Allelopathy
Barnyard grass (Echinochloa crus-galli L.)
P-Hydroxymandelic acid
Plant growth regulator
Root exudate

ASJC Scopus subject areas

Agronomy and Crop Science
Plant Science

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10.1007/PL00007050

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title = "Allelopathic substance exuded from a serious weed, germinating barnyard grass (Echinochloa crus-galli L.), roots",

abstract = "The allelopathy of a serious weed, barnyard grass (Echinochloa crus-galli L.), was investigated. Root exudates of young barnyard grass showed allelopathic effects and plant-selective activity and inhibited root elongation of all plants tested. With respect to shoot growth, the exudates did not show inhibition of barnyard grass only. The allelopathic substance was isolated and identified as p-hydroxymandelic acid by NMR. pHydroxymandelic acid strongly inhibited shoot growth and root elongation of all plants tested. The effects of three congeners of p-hydroxymandelic acid were tested on rice shoot growth. In the biological activity exhibited in rice, shoot growth was related to the hydroxyl groups.",

keywords = "Allelopathic substance, Allelopathy, Barnyard grass (Echinochloa crus-galli L.), P-Hydroxymandelic acid, Plant growth regulator, Root exudate",

author = "T. Yamamoto and K. Yokotani-Tomita and S. Kosemura and S. Yamamura and K. Yamada and K. Hasegawa",

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AU - Yamamoto, T.

AU - Yokotani-Tomita, K.

AU - Kosemura, S.

AU - Yamamura, S.

AU - Yamada, K.

AU - Hasegawa, K.

PY - 1999/1/1

Y1 - 1999/1/1

N2 - The allelopathy of a serious weed, barnyard grass (Echinochloa crus-galli L.), was investigated. Root exudates of young barnyard grass showed allelopathic effects and plant-selective activity and inhibited root elongation of all plants tested. With respect to shoot growth, the exudates did not show inhibition of barnyard grass only. The allelopathic substance was isolated and identified as p-hydroxymandelic acid by NMR. pHydroxymandelic acid strongly inhibited shoot growth and root elongation of all plants tested. The effects of three congeners of p-hydroxymandelic acid were tested on rice shoot growth. In the biological activity exhibited in rice, shoot growth was related to the hydroxyl groups.

AB - The allelopathy of a serious weed, barnyard grass (Echinochloa crus-galli L.), was investigated. Root exudates of young barnyard grass showed allelopathic effects and plant-selective activity and inhibited root elongation of all plants tested. With respect to shoot growth, the exudates did not show inhibition of barnyard grass only. The allelopathic substance was isolated and identified as p-hydroxymandelic acid by NMR. pHydroxymandelic acid strongly inhibited shoot growth and root elongation of all plants tested. The effects of three congeners of p-hydroxymandelic acid were tested on rice shoot growth. In the biological activity exhibited in rice, shoot growth was related to the hydroxyl groups.

KW - Allelopathic substance

KW - Allelopathy

KW - Barnyard grass (Echinochloa crus-galli L.)

KW - P-Hydroxymandelic acid

KW - Plant growth regulator

KW - Root exudate

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Allelopathic substance exuded from a serious weed, germinating barnyard grass (Echinochloa crus-galli L.), roots

Abstract

Keywords

ASJC Scopus subject areas

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