β-(3-isoxazolin-5-on-2-yl)-alanine from Pisum: Allelopathic properties and antimycotic bioassay

Schenk, Sigrid U.; Werner, Dietrich

doi:10.1016/0031-9422(91)83706-q

Cited by 37 publications

(12 citation statements)

References 13 publications

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“…According to Barreto (1994) and Parr et al (1990), creeping and faster growing cover crops suppress weed growth by out‐competing them for nutrients, moisture, space, and light. Schenk and Werner (1991) reported that various legumes in the tribe Vicieae (peas, lentils, and vetches) contain beta‐(3‐isoxazolinonyl) alanine, which is released into soil as a root exudate. This chemical can cause reduced growth in seedlings of various plants, and apparently is an allelopathic compound (Bugg, 1996).…”

Section: Resultsmentioning

confidence: 99%

Legume Cover Crops are More Beneficial than Natural Fallows in Minimally Tilled Ugandan Soils

Mubiru

Coyne

2009

Agronomy Journal

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It is important to establish the various eff ects of legume cover crops on soil physicochemical properties because they have been considered for use as improved fallows (with shorter rest periods) to enhance development and maintenance of soil productivity. Our objectives were to assess: (i) aboveground dry matter yields of legume cover crops; and (ii) cover crop eff ects on weed infestation and soil physicochemical properties in a minimum tillage management system. Trials were conducted for 2 yr at Kawanda Agricultural Research Institute and on farmers' fi elds in Mbale and Pallisa districts, eastern Uganda. Th e experiment layout was a Randomized Complete Block Design (RCBD) in a split-plot arrangement with four replications. Natural and improved fallows were established in the second cropping season of 2004. Cover crops used in the improved fallows included mucuna [Mucuna pruriens (L.) DC.var. utiliz], Dolichos lablab (Lablab vulgaris Savi cv. Rongai), canavalia [Canavalia ensiformis (L.) DC.], and crotalaria (Crotalaria paulina Schrank). Th e fallows were reestablished in the same plots in the second cropping season of 2005 aft er maize (Zea mays L.). Canavalia yielded signifi cantly more dry matter than the other fallows regardless of year or site.With an average yield of 169 kg N ha -1 canavalia accumulated signifi cantly more N than the other fallows; all improved fallows produced signifi cantly more N than the natural fallow. Canavalia also accumulated signifi cantly more P than the other fallows; all improved fallows, with the exception of crotalaria, accumulated more P than the natural fallow. Th ere was no signifi cant change in soil physicochemical properties by the improved fallows. All eff ects considered, improved fallows were more benefi cial than natural fallow. A signifi cant improvement in soil physicochemical properties using legume cover crops might be possible, though it may require more than the two cropping cycles used in this study of degraded soils.

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Section: Resultsmentioning

confidence: 99%

Legume Cover Crops are More Beneficial than Natural Fallows in Minimally Tilled Ugandan Soils

Mubiru

Coyne

2009

Agronomy Journal

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“…Pisum sativum is known to possess allelopathic capabilities (Hisashi 2003) and field experiments have shown that residues and extracts of Pisum sativum suppressed the growth of several plant species (Schenk & Werner 1991; Akemo, Regnier & Bennett 2000; Hisashi 2003). At least some of the allelopathic compounds in Pisum such as pisatin, are exuded by roots (Bagga & Straney 2000; Morandi, Gollotte & Camporota 2002).…”

Section: Discussionmentioning

confidence: 99%

Root navigation by self inhibition

Falik

Reides

Gersani

et al. 2005

Plant Cell & Environment

125

114

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Circumventing physical obstacles is critical for a plant's survival and performance. Although the ability of roots to circumvent obstacles has been known for over 100 years, the phenomena and its mechanisms have received relatively little attention. In this study it is demonstrated that roots of Pisum sativum are able to detect and avoid growth towards inanimate obstacles and the hypothesis that this behaviour is based on the sensitivity of roots to their own allelopathic exudates that accumulate in the vicinity of physical obstacles is tested. The development of lateral roots of Pisum sativum towards an obstacle (a piece of nylon string, similar in dimensions to a plant root) was followed. Lateral roots were similar in number, but significantly shorter in the direction of the nylon string. In addition, up to half of the lateral roots that developed towards the nylon string withered, whereas no withering was observed in the absence of the nylon string. These avoidance growth patterns were suppressed in the presence of potassium permanganate or activated carbon, indicating a role of allelopathic exudates in promoting obstacle avoidance. The demonstrated obstacle avoidance by self inhibition could increase plant performance by limiting resource allocation to less promising parts of the root system.

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“…Phenolic compounds and acids such as ferulic, p-hydroxybenzoic, benzoic acid, lauric acid, phthalic acid, vanillic acid, coumarin, cinnamic acid, palmatic acid, succinic acid, adipic acid, stearic acid, scopoletin, citric acid and lactic acid (Lee et al 2006;Hao et al 2006;Ohno et al 2001;Asao et al2002;Jalali 1976;Shen et al 2002;Yu et al 2003;Tsanuo et al 2003;Friebe et al 1995;Grayston et al 1997;Perez and Ormeno-Nunez 1991;Schenk and Werner 1991;Grayling and Hanke 1992;Patrick 1971;Kuwatsuka and Shindo 1973;Blum and Shafer 1988;Sparling et al 1981;Partra and Misra 1992) are widely distributed in plants (Kuwatsuka and Shindo 1973). Most of them have been isolated and identified as allelochemicals that are phytotoxic to plants.…”

Section: Introductionmentioning

confidence: 99%

Allelopathic impact of artificially applied coumarin on Fusarium oxysporum f.sp. niveum

Raza

Liu

et al. 2007

World J Microbiol Biotechnol

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Watermelon production is threatened by fusarium wilt caused by Fusarium oxysporum f.sp. niveum (FON) in continuous cultivation system. Some elements, mainly allelochemicals, released from living roots or decayed plants might be associated with the disease. The purpose of this work was to evaluate the possible impact of coumarin, one kind of watermelon allelochemical, on FON. Furthermore, possible new mechanisms might be investigated during the ecological interactions of plant-microbe. Results showed that coumarin strongly inhibited growth of FON leading to a decrease in its biomass, dry weight of mycelia of FON in a liquid culture. The dry weight was decreased by 62.9% compared with control. The hyphal growth of FON on plates was stopped at high ([400 mg l -1 ) concentrations of coumarin. At 320 mg l -1 , sporulation and enzyme activities of FON were also severely suppressed by coumarin. The yield of conidia, and the activities of proteinase, cellulase, and amylase were reduced by 98.9%, 79.7%, 29.8% and 15.9% respectively. However, conidial germination and mycotoxin (MT) production of FON were greatly stimulated, being increased by 55.7% and 14.9 fold at 320 mg l -1 respectively. We conclude that coumarin acted as an allelochemical substance to inhibit growth and pathogenic enzyme activities of FON but to stimulate mycotoxin production and conidial germination. It was suggested that coumarin acted as a signal transduction element bridging plant and pathogen in the process of plant-microbe interactions.

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β-(3-isoxazolin-5-on-2-yl)-alanine from Pisum: Allelopathic properties and antimycotic bioassay

Cited by 37 publications

References 13 publications

Legume Cover Crops are More Beneficial than Natural Fallows in Minimally Tilled Ugandan Soils

Legume Cover Crops are More Beneficial than Natural Fallows in Minimally Tilled Ugandan Soils

Root navigation by self inhibition

Allelopathic impact of artificially applied coumarin on Fusarium oxysporum f.sp. niveum

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