Novel disease control compounds: the potential to ‘immunize’ plants against infection

Lyon, G. D.; Regliński, T.; Newton, A. C.

doi:10.1111/j.1365-3059.1995.tb01664.x

Cited by 147 publications

(71 citation statements)

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“…This indicates that the resistance mechanisms are present in all cultivars but are not normally triggered by the pathogen, or at least not rapidly enough to prevent successful infection. Whilst this argument would suggest that all/many genotypes can be made resistant by treatment with resistance elicitor, in practice there are cultivar interactions (Reglinski et al, 1994b;Newton, unpublished data) and pathogen-species interactions (Lyon et al, 1995). There is, as yet, no evidence that there are subspecific pathogen interactions, but concern has been expressed that there could be, and therefore resistance elicitors could prove to be no more effective or durable crop protectants than fungicides.…”

Section: Is Induced Resistance Sustainable or Will Pathogens Mutate Tmentioning

confidence: 99%

“…There are many reports in the literature which demonstrate the concept of induced resistance in laboratory or glasshouse experiments, including abiotic and biotic elicitors, either in a pure form or as a crude mixture (Lyon et al, 1995). Most of these elicitors have not been tested under field conditions and some have been shown to have side-effects such as phytotoxicity.…”

Section: Will Induced Resistance Work In the Field?mentioning

confidence: 99%

“…This letter aims to draw attention to important issues relating to the possible implementation of this concept as part of an integrated disease control strategy. Whilst some of these topics have been discussed elsewhere (Lyon et al, 1995) we wish to highlight factors that, for some people, offer new and exciting opportunities whilst, for others, may offer genuine concerns for both food safety and sustainable disease control.…”

Section: Introductionmentioning

confidence: 99%

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Do resistance elicitors offer new opportunities in integrated disease control strategies?

Lyon¹,

Newton²

1997

Plant Pathology

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Section: Is Induced Resistance Sustainable or Will Pathogens Mutate Tmentioning

confidence: 99%

Section: Will Induced Resistance Work In the Field?mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Do resistance elicitors offer new opportunities in integrated disease control strategies?

Lyon¹,

Newton²

1997

Plant Pathology

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“…(Chet 1987) ou les rhizobactéries du genre Pseudomonas (Lemanceau et Alabouvette 1993) suscite un intérêt grandissant, même si les exemples de commercialisation sont encore peu nombreux. Une autre avenue potentiellement attrayante est la résistance systémique induite basée sur le concept de la prémunition (Lyon et al 1995). Introduit en 1961 par Ross, ce concept avait initialement pour fondement l'observation qu'une plante pré-inoculée par un microorganisme non pathogène déve-138 loppait une résistance accrue à l'égard d'agents pathogènes.…”

Section: Introductionunclassified

La résistance induite : une nouvelle stratégie de défense des plantes contre les agents pathogènes

Benhamou¹,

Picard

2005

phyto

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Tout au long de leur co-évolution, les plantes et les microorganismes pathogènes ont développé des relations complexes résultant d'un échange constant d'informations moléculaires. Les agents pathogènes ont élaboré toute une gamme de stratégies offensives pour parasiter les plantes et en contrepartie, les plantes ont déployé un arsenal défensif similaire à bien des égards aux défenses immunitaires animales. Les percées récentes en biologie moléculaire et en transformation des végétaux ont démontré que sensibiliser une plante à répondre plus rapidement à l'infection pouvait lui conférer une protection accrue contre des microorganismes virulents. Un aspect important dans la mise en évidence du rôle joué par les molécules de défense au niveau de l'expression de la résistance est une connaissance exacte de leur localisation spatio-temporelle dans les tissus en état de stress. Afin de cerner le processus associé à l'induction de résistance chez les plantes, l'effet d'éliciteurs biologiques, microbiens et chimiques sur la réponse cellulaire des plantes envers une attaque pathogène a fait l'objet d'investigations et les mécanismes impliqués dans le phénomène ont été étudiés. Dans tous les cas, il a été montré qu'une corrélation existait entre la réponse globale de la plante et des changements dans la biochimie et la physiologie des cellules, lesquels étaient accompagnés de modifications structurales incluant la formation d'appositions pariétales riches en callose et l'infiltration de composés phénoliques aux sites de pénétration potentielle par l'agent pathogène. L'activation du sentier des phénylpropanoïdes est un phénomème crucial dans la restriction de la croissance de l'agent pathogène et dans la survie des cellules-hôtes en conditions de stress. Bien qu'il n'existe que peu d'exemples d'application pratique de la résistance induite en tant que méthode de lutte contre les maladies des plantes, les résultats obtenus à partir de quelques expériences menées en plein champ et en serre sont encourageants et indiquent que cette approche a le potentiel de devenir une stratégie de lutte efficace et durable contre toute une gamme d'agents pathogènes.During the course of their coevolution, plants and pathogens have evolved an intricate relationship resulting from a continuous exchange of molecular information. Pathogens have developed an array of offensive strategies to parasitize plants and, in turn, plants have deployed a wide range of defense mechanisms similar in some respects to the immune defenses produced in animais. The recent advances in molecular biology and plant transformation have provided evidence that sensitizing a plant to respond more rapidly to infection could confer increased protection against virulent pathogens. One important facet in ascertaining the significance of defense molecules in plant disease resistance isthe exact knowledgeof their spatio-temporal distribution in stressed plant tissues. In an effort to understand the process associated with the induction of plant disease resistance, the effect of ...

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“…Recent research efforts concentrate on the use of ecofriendly methods of disease control such as biological control, use of induced resistance by biotic and abiotic means (Lyon et al, 1995) and use of biodegradable natural products, especially from medicinal plants ). Many workers have tested crude plant extracts against several plant pathogens (Chakravorty & Pariya 1977;Asthana et al, 1982;Chaturvedi et al, 1987;Prithiviraj et al, 1996) as well as active principles from plants (Maillard et al, 1987;Kobayashi et al, 1987;Singh et al, 1988Singh et al, , 1990Prithivaraj et al, 1997).…”

Section: Introductionmentioning

confidence: 99%

Antifungal activity of bergenin, a constituent of Flueggea microcarpa

et al. 1997

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The antifungal activity of bergenin against some plant pathogenic fungi, namely, Alternaria alternata, A. brassicae, A. carthami, Fusarium udum, F. oxysporum f.sp. ciceri, Curvularia lunata and Erysiphe pisi, was studied. Bergenin as its monosodium salt was effective against all the fungi and the effective dose for complete inhibition of spore germination varied from 15 mg mL ¹1 for F. udum to 125 mg mL ¹1 for E. pisi. Experiments on the effect of bergenin on powdery mildew development under glasshouse conditions revealed that it can control powdery mildew of pea at 2000 mg mL ¹1 by postinoculation treatment, the results being comparable with those of carbendazim (1000 mg mL ¹1 ) and wettable sulfur (2000 mg mL ¹1 ). It affected hyphal elongation and the number of primary and secondary branches.

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Novel disease control compounds: the potential to ‘immunize’ plants against infection

Cited by 147 publications

References 148 publications

Do resistance elicitors offer new opportunities in integrated disease control strategies?

Do resistance elicitors offer new opportunities in integrated disease control strategies?

La résistance induite : une nouvelle stratégie de défense des plantes contre les agents pathogènes

Antifungal activity of bergenin, a constituent of Flueggea microcarpa

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