Broad antifungal activity of ?-isoxazolinonyl-alanine, a non-protein amino acid from roots of pea (Pisum sativum L.) seedlings

Schenk, Sigrid U.; Lambein, Fernand; Werner, Dietrich

doi:10.1007/bf00335768

Cited by 23 publications

(12 citation statements)

References 18 publications

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“…In addition, the difficulties in collecting and culturing aquatic microorganisms, and the high polarity of water, which determines that compounds with optimum logP values for water transport do not easily cross low polarity systems such as cell membranes, are difficulties inherent to aquatic ecosystems that challenge allelopathic studies and call for methodological approaches different than those used in terrestrial studies. Finally, a too narrowed focus on herbicidal or pesticidal (Kessler 1989;Schenk et al 1991;Takikawa et al 1995) compounds search and an excessively ''terrestrial'' point of view can be other factors that difficult at the beginning the development of aquatic allelopathy.…”

Section: Introductionmentioning

confidence: 96%

Allelopathic agents from aquatic ecosystems: potential biopesticides models

et al. 2007

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Allelopathy is usually regarded as a terrestrial science and little attention has been paid to the allelochemicals involved in the interactions between aquatic autotrophs. Also, chemicals involved in the interaction between algae (macro or microscopic) and their environment are not often acknowledged as allelopathic. Allelopathy is a key factor for explaining microalgae assemblages, community structure and the dynamics of the populations within the ecosystem. Herein we present an overview of what is known in this field, describing the chemicals yet identified and which kind of interactions are they involved in.

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Section: Introductionmentioning

confidence: 96%

Allelopathic agents from aquatic ecosystems: potential biopesticides models

et al. 2007

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“…This effect increased with increase of the concentration of the amino acid until a complete inhibition was observed at concentration above 40%. Schenk et al (1991) reported that Rhizoctonia solani did not show a reduced mycelium growth rate in the presence of β-isoxazolin-5-on-2-YL)-alanine (βIA) isolated from root extracts and root exudates of pea seedlings, but the formation of sclerotia was significantly inhibited at 50 ppm βIA. Also, mycelia of Botrytis cinerea and Pythium ultimum showed significantly inhibited growth rates at 50 and 250 -500 ppm βIA, respectively.…”

Section: Resultsmentioning

confidence: 99%

“…In plants, t he is olation and s truct urall y elucidat ed -is oxazoli n-5-on-2-yl)-alani ne (βIA), a het eroc yclic non-protei n ami no acid isolat ed from root extr acts or r oot exudates of pea seedlings, acts as a potent grow t h inhibitors of s ever al euk aryotic organisms , including yeas ts, p hyt opat hog enic fungi, unic ellular green algae, and higher plants (Schenk et al, 1991).…”

mentioning

confidence: 99%

Control of some sugar beet pathogens using beta-alanine in vitro and in vivo

Ali¹,

Mostafa²,

Eweis³

2017

Egypt. J. Exp. Biol. (Bot.)

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ABSTRACT:Bet a (β) -alanine is a natur ally occ urring nonproteing enic ami no acid . β-alanine suppressed t he growt h activities of s ugar beet pathogens R hizoc tonia sol ani K uhn (A G2-2), Sclerotium rolfsii S acc. and F usarium s olani (Mart) S acc.w hen applied t o t he growt h medium at diff erent concentr ations (12.5 -100 µg/ ml). W hen ap plied to soil, β-alanine suppressed f ungal inf ecti on of tw o s ugar beet cultivars Ras poly and TO P. In abs enc e of β -alanine, R. s olani w as t he m ost virul ent agains t c vs. Ras poy and TO P. Vir ulence w as directly c orrel ated wit h t he ac tivities of cell wall-degrading enz ym es produc ed by thes e pathogens in viv o. R educ ed virulenc e of R . solani, S. rolf sii and F . s olani under β-alanine stress was due t o d ecreas ed inocul um potential of the pathogens as res ult of the reduction of t he c ell wall -degrading enz ymes . Growt h par amet ers i ncluding emergence, plant length and dry weight of s ugar beet were signific antl y i ncreased at all inv estigated β-alanine c oncentr ations. T he infection rat e was signific antl y d ecreased with incr easi ng β -alanine stress , w hereas the t ot al s ugar reducing val ues (TRV) was signific antl y increased in t he tes ted sug ar beet c ultiv ars. The res ults indicated the p ossibility of the test ed amino acid for protecti on of s ugar beet plant c ultiv ars ag ainst f ungal inf ecti on. KEY WORDS:Sugar beet pathogens, β -alanine, growth activiti es, c ell w all -degrading enz ym es, sug ar cont ents. CORRESP ONDENCE:Mo ham ed E w ei s Department of Botany and Microbiol ogy, Facul t y of Sci ence, Cairo U niv ersit y,

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“…Although several studies have demonstrated the importance of proteases for virulence, to my knowledge, the specific ability of legume pathogens to degrade the antimicrobial proteins of their hosts appears to have received little or no attention. Schenk et al (1991) reported the production of beta-(isoxazolin-5-on-2-yl)-alanine, a heterocyclic non-protein amino acid from root extracts and root exudates of pea seedlings. The compound was a potent inhibitor of several eukaryotic organisms, including the phytopathogenic fungi, Botrytis cinera, Pythium ultimum, and Rhizoctonia solani.…”

Section: Overcoming Defence Properties Of Legumesmentioning

confidence: 99%

Counteracting virulence mechanisms of grain legume pathogens

Strange

2006

Euphytica

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Broad antifungal activity of ?-isoxazolinonyl-alanine, a non-protein amino acid from roots of pea (Pisum sativum L.) seedlings

Cited by 23 publications

References 18 publications

Allelopathic agents from aquatic ecosystems: potential biopesticides models

Allelopathic agents from aquatic ecosystems: potential biopesticides models

Control of some sugar beet pathogens using beta-alanine in vitro and in vivo

Counteracting virulence mechanisms of grain legume pathogens

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