An <i>In Vitro</i> Study of the Nature of Protective Activities of Copper Sulphate, Copper Hydroxide and Copper Oxide Against Conidia of <i>Venturia inaequalis</i>

Montag, J.; Schreiber, Lukas; Schönherr, Jörg

doi:10.1111/j.1439-0434.2006.01132.x

Cited by 19 publications

(18 citation statements)

References 28 publications

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“…Asimismo, y aunque se han utilizado en el olivar prácticamente desde su descubrimiento por Millardet (1885), no se han detectado pobla ciones de hongos tolerantes, al tratarse de fungicidas "multisitio" que afectan a la membrana celular de las esporas sustituyendo otros iones (H + , K + , Ca 2+ y Mg 2 ) esenciales y afectando a las esterasas de membrana. En el interior de la espora, los iones Cu 2+ se fijan sobre diversos grupos químicos (imidazoles, carboxilos, fosfatos, sulfhidrilos, aminas o hidroxilos) presentes en numerosas proteínas y afectan a la cadena de respiración mitocondrial (Montag et al, 2006;Borkow y Gabbay, 2009).…”

Section: Controlunclassified

La Antracnosis del olivo y su efecto en la calidad del aceite

Moral¹,

Xaviér²,

Roca³

et al. 2014

Grasas y Aceites

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SUMMARY:Olive Anthracnose and its effect on oil quality. Olive (Olea europaea subsp. europaea var. europaea) is one of the first domesticated and cultivated trees that is widely distributed in the Mediterranean regions. The Anthracnose, caused by the two complex fungal species Colletotrichum acutatum and C. gloeosporioides, is the most important disease adversely affecting the olive oil quality. Even so, the effect of Anthracnose on oil quality is largely unknown and many questions remain unanswered. This offers a unique opportunity to study how Colletotrichum species, cultivars, infection type (latent or visible) and severity, and other factors that may affect different parameters of oil quality, such us acidity, peroxide value, K232, K270, phenolic compounds, or alkyl esters. This review focuses on the current knowledge of the biology, epidemiology, and management of Anthracnose and its effect on olive oil quality.KEYWORDS: Oil quality; Olive; Soapy rot; Virgin oil RESUMEN: El olivo (Olea europaea subsp. europaea var. europaea) es uno de los primeros cultivos leñosos domesticados. Actualmente el olivo se encuentra ampliamente distribuido por todas las regiones de clima mediterráneo. La Antracnosis, causada por las especies complejas Colletotrichum acutatum y C. gloeosporioides, es la enfermedad del olivo que más afecta a la calidad del aceite. Aun así, el efecto de la Antracnosis en la calidad del aceite es ampliamente desconocido. Por lo que creemos esencial que se afronten estudios encaminados a dilucidar el efecto de las especies del patógeno, el cultivar de olivo y el tipo (latente o visible) y severidad de las infecciones de la aceituna en los distintos parámetros de calidad del aceite como la acidez, índice de peróxidos, K232, K270, compuestos fenólicos o ésteres alquílicos. Esta revisión presenta los conocimientos actuales sobre la biología, epidemiología, control, y efecto en la calidad del aceite de la Antracnosis del olivo.

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Section: Controlunclassified

La Antracnosis del olivo y su efecto en la calidad del aceite

Moral¹,

Xaviér²,

Roca³

et al. 2014

Grasas y Aceites

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“…Firstly, copper is not only toxic to pathogens, but is also phytotoxic, and, when used excessively, causes russetting of fruits (Montag et al, 2006). Firstly, copper is not only toxic to pathogens, but is also phytotoxic, and, when used excessively, causes russetting of fruits (Montag et al, 2006).…”

Section: Use Of Metals In Disease Controlmentioning

confidence: 99%

The impact of transition metals on bacterial plant disease

2013

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Metals play essential roles in many biological processes but are toxic when present in excess. This makes their transport and homoeostatic control of particular importance to living organisms. Within the context of plant-pathogen interactions the availability and toxicity of transition metals can have a substantial impact on disease development. Metals are essential for defensive generation of reactive oxygen species and other plant defences and can be used directly to limit pathogen growth. Metal-based antimicrobials are used in agriculture to control plant disease, and there is increasing evidence that metal hyperaccumulating plants use accumulated metal to limit pathogen growth. Pathogens and hosts compete for available metals, with plants possessing mechanisms to withhold essential metals from invading microbes. Pathogens, meanwhile, use low-metal conditions as a signal to recognise and respond to the host environment. Consequently, metal-sensing systems such as fur (iron) and zur (zinc) regulate the expression of pathogenicity and virulence genes; and pathogens have developed sophisticated strategies to acquire metal during growth in plant tissues, including the production of multiple siderophores. This review explores the impact of transition metals on the processes that determine the outcome of bacterial infection in plants, with a particular emphasis on zinc, iron and copper.

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“…It has been long recognized that Cu-based preservatives afford biocidal activities through free cupric ions in a biological system (McCallan 1949;Montag et al 2006). On the contrary, the extremely low solubility (K sp = 10 -33.78 for malachite) of BCC at neutral pH (Astilleros et al 1998) has raised concerns regarding whether the micronized copper (MC) preservatives are able to provide sufficient soluble Cu for wood protection.…”

Section: Introductionmentioning

confidence: 99%

Quantification of mobilized copper(II) levels in micronized copper-treated wood by electron paramagnetic resonance (EPR) spectroscopy

2013

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Sapwood sawdust from southern pine was treated with micronized copper (MC) under various conditions and the mobilized copper(II) (Cu mob ) concentrations were determined in the treated wood by electron paramagnetic resonance (EPR) spectroscopy. The spectral parameters for the copper sulfate (CuSO 4 )-treated sapwood and those of the MC-treated sapwood were very similar. A linear correlation was found between the intensities of copper (Cu) EPR spectra and those of Cu energydispersive X-ray fluorescence spectroscopy in a series of CuSO 4 -treated sapwood reference samples. Thus, the EPR signal intensities could be reliably correlated to the mass of reacted Cu present using this calibration curve. The amount of the Cu mob in sawdust treated by MC suspensions increased during the first 2-3 days after the initial treatment and then reached a maximum during the 7-day monitoring period. In the case of the treatment with MC alone or MC azole, an increased MC concentration led to an elevated amount of Cu (to a maximum of ∼0.23% Cu) solubilized by the sapwood. If the wood was treated with MC quat, the Cu mob initially increased, but at higher concentrations the Cu mob content decreased, due to the interference by the quat cobiocide on the acid reaction between the wood and the basic Cu carbonate. An examination of commercially-treated wood confirmed the laboratory observations.

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An In Vitro Study of the Nature of Protective Activities of Copper Sulphate, Copper Hydroxide and Copper Oxide Against Conidia of Venturia inaequalis

Abstract: species (ROS) in suspensions of copper hydroxide and copper oxide could not be detected using chemiluminescence analysis. Hence ROS were not formed on the surfaces of copper containing particles and could not be involved in copper toxicity.www.blackwell-synergy.com

Cited by 19 publications

References 28 publications

La Antracnosis del olivo y su efecto en la calidad del aceite

La Antracnosis del olivo y su efecto en la calidad del aceite

The impact of transition metals on bacterial plant disease

Quantification of mobilized copper(II) levels in micronized copper-treated wood by electron paramagnetic resonance (EPR) spectroscopy

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