Advances in understanding molecular mechanisms of fungicide resistance and molecular detection of resistant genotypes in phytopathogenic fungi

Ma, Zhonghua; Michailides, Themis J.

doi:10.1016/j.cropro.2005.01.011

Cited by 509 publications

(349 citation statements)

References 63 publications

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“…However, resistance is overcome by the genetic diversity of fungal pathogens as well as by genotype × environmental interactions (Bayles et al, 2000). Repeated fungicide treatments generate important economic losses, emergence of resistant pathogen populations, and potential environmental impacts (Ma and Michailides, 2005). Therefore, alternative environment-friendly methods for the management of fungal plant pathogens remain to be urgently investigated.…”

Section: Introductionmentioning

confidence: 99%

The role of silicon (Si) in increasing plant resistance against fungal diseases

Sakr

2016

Hellenic Plant Protection Journal

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Summary The use of silicon (Si) in agriculture has attracted a great deal of interest from researchers because of the numerous benefits of this element to plants. The use of silicon has decreased the intensity of several diseases in crops of great economic importance. In this study, the relationship between silicon nutrition and fungal disease development in plants was reviewed. The current review underlines the agricultural importance of silicon in crops, the potential for controlling fungal plant pathogens by silicon treatment, the different mechanisms of silicon-enhanced resistance, and the inhibitory effects of silicon on plant pathogenic fungi in vitro. By combining the data presented in this paper, a better comprehension of the relationship between silicon treatments, increasing plant resistance, and decreasing severity of fungal diseases could be achieved.

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Section: Introductionmentioning

confidence: 99%

The role of silicon (Si) in increasing plant resistance against fungal diseases

Sakr

2016

Hellenic Plant Protection Journal

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“…Indeed, numerous negative effects have been documented on human health, natural flora and fauna or even on agricultural production and sustainability through the decimation of beneficial natural enemies of pests and parasites (Wilson & Tisdell 2001). Moreover, when used systematically, chemicals lose efficiency due to rapid selection of resistance in targeted organisms (Gullino et al 2000;Ma & Michailides 2005;Urban & Lebeda 2006). Altogether, the need for improved control of agricultural pests and diseases and the necessity to reduce the use of chemicals require a change in the paradigm of crop protection.…”

Section: Introductionmentioning

confidence: 99%

Landscape epidemiology of plant diseases

Plantegenest

May

Fabre³

2007

J. R. Soc. Interface.

203

195

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Many agricultural landscapes are characterized by a high degree of heterogeneity and fragmentation. Landscape ecology focuses on the influence of habitat heterogeneity in space and time on ecological processes. Landscape epidemiology aims at applying concepts and approaches originating from landscape ecology to the study of pathogen dynamics at the landscape scale. However, despite the strong influence that the landscape properties may have on the spread of plant diseases, landscape epidemiology has still received little attention from plant pathologists. Some recent methodological and technological progress provides new and powerful tools to describe and analyse the spatial patterns of host-pathogen interactions. Here, we review some important topics in plant pathology that may benefit from a landscape perspective. These include the influence of: landscape composition on the global inoculum pressure; landscape heterogeneity on pathogen dynamics; landscape structure on pathogen dispersal; and landscape properties on the emergence of pathogens and on their evolution.

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“…Because of the rapid development of resistance of phytopathogenic fungi against fungicides (Ma & Michailides, 2005) a great need exists for alternative crop protection compounds. No previously published data could however be found on the in vitro fungi-toxic effect of soluble potassium silicate on phytopathogenic fungi.…”

Section: Introductionmentioning

confidence: 99%

In-vitroinhibition of mycelial growth of several phytopathogenic fungi by soluble potassium silicate

Bekker

Kaiser

Merwe

et al. 2006

South African Journal of Plant and Soil

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Soluble silicon has been reported to suppress some plant diseases, but in vitro inhibition of phytopathogenic fungi has not been demonstrated. In the current study in-vitro dose-responses towards soluble potassium silicate (20.7% Si0 2 ) were determined for Phytophthora cinnamomi, Sc/erotinia sc/erotiorum, , pythium F-group, Mucor pusi/lus, Drechs/era sp, Fusarium oxysporum, F. so/ani, A/temaria so/ani, Col/etotrichum coccodes, Verticil/ium theobromae, Curvu/aria lunata and Stemphylium herbarum. Inhibition of mycelial growth was doserelated with 100% inhibition at 80 ml (pH 11.7) and 40 ml (pH 11.5) soluble potassium silicate per litre of agar, for all fungi tested with the exception of Drechs/era sp. and F. oxysporum at 40 ml in one experiment. Only Sc/erotinia sc/erotiorum and Phytophthora cinnamomiwere completely inhibited at all soluble potassium silicate concentrations between 5 and 80 ml.r1 agar, while all the other fungi were only partially inhibited at potassium silicate concentrations of 5, 10 and 20 ml.r 1 agar. Percentage inhibition was positively correlated with dosage. Soluble potassium silicate raised the pH of unameliorated agar from 5.6 to 10.3 and 11.7 at potassium silicate concentrations of 5 and 80 ml.r 1 agar respectively. Subsequent investigations into the effect of pH in the absence of potassium silicate showed that fungal growth was only partially inhibited at pH 10.3 and 11.7. Clearly, potassium silicate had an inhibitory effect on fungal growth in vitro and this was mostly fungicidal rather than attributed to a pH effect.

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Advances in understanding molecular mechanisms of fungicide resistance and molecular detection of resistant genotypes in phytopathogenic fungi

Cited by 509 publications

References 63 publications

The role of silicon (Si) in increasing plant resistance against fungal diseases

The role of silicon (Si) in increasing plant resistance against fungal diseases

Landscape epidemiology of plant diseases

In-vitroinhibition of mycelial growth of several phytopathogenic fungi by soluble potassium silicate

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