Involvement of Calcium/Calmodulin Signaling in Cercosporin Toxin Biosynthesis by<i>Cercospora</i><i>nicotianae</i>

Chung, Kwong T.

doi:10.1128/aem.69.2.1187-1196.2003

Cited by 54 publications

(54 citation statements)

References 50 publications

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“…Cercosporin production was observed three days after inoculation as a red or redpurple pigment in the agar. This knowledge is comparable with results of Daub & Ehrenshaft (2000) and Chung (2003). Studies on the cercosporin toxin produced by Cercospora species have documented an important role for this toxin in pathogenesis of host plants.…”

Section: Discussionsupporting

confidence: 78%

“…The success of this group of fungi as pathogens is attributed to their production of a toxin, cercosporin, first isolated in 1957 by Kuyama and Tamura, which is considered to be a primary pathogenicity factor (Daub & Ehrenshaft 2000). Many plant pathogenic Cercospora species produced light-activated non-host-selective perylenequinone toxins that are toxic to most organisms, including plants, animals and microorganisms via the generation of activated oxygen species, particularly singlet oxygen (Chung 2003). In our experiments cercosporin was produced by the fungus Cercospora microsora Sacc.…”

Section: Discussionmentioning

confidence: 99%

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Leaf spot disease on Tilia cordata caused by the fungus Cercospora microsora

Bernadovičová

Ivanová

2008

Biologia

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Increased incidence of leaf spots on many tree species, up to the presence of peripheral importance only, including linden trees was noticed recently. First massive and continuous occurence of the fungus Cercospora microsora Sacc. [teleomorph Mycosphaerella millegrana (Cook.) Schröet., Mycosphaerella microsora Syd.], causal agent of anthracnose on linden trees (Tilia cordata Mill.) grown in urban plantings in Slovakia was reported. Along with this, certain of the important growth characteristics of this fungus were studied under laboratory conditions. To specify Cercospora biology mycelial growth of C. microsora in pure hyphal cultures was observed in relation to medium and locality. One-way ANOVA has confirmed a statistically significant influence of both factors, culture medium and locality on growth rate values of C. microsora. The effect of these factors has not proved unambiguously in all cases. In the case of one locality (Nitra), the significant influence of used media has not been proved (P > 0.05). PDAg showed generally as the most suitable medium, inducing the most intensive growth in three localities (41.06 mm/week on average). Comparing three localities, the effect of this factor is not so unambiguous. Growth rate values from the localities Bratislava and Pribeta indicate unsuitability of medium A for the fast radial growth. A Tukey test separately conducted for the factors medium and the locality revealed the significant combinations of means (P ≤ 0.05).

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Section: Discussionsupporting

confidence: 78%

Section: Discussionmentioning

confidence: 99%

Leaf spot disease on Tilia cordata caused by the fungus Cercospora microsora

Bernadovičová

Ivanová

2008

Biologia

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“…In yeast, for example, 11 more targets for CaM other than calcineurin were identified (851). The calmodulin/calcineurin signaling pathway is required for appropriate stress responses, mitosis, growth (852)(853)(854), and other pathways, like toxin production (855). In T. reesei, calmodulin was shown to be essential for secretion of xylanases (839).…”

Section: Genomes Of T Reesei T Virens and T Atroviride Respectimentioning

confidence: 99%

The Genomes of Three Uneven Siblings: Footprints of the Lifestyles of Three Trichoderma Species

Schmoll

Dattenböck

Carreras-Villaseñor

et al. 2016

Microbiol Mol Biol Rev

165

195

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SUMMARYThe genusTrichodermacontains fungi with high relevance for humans, with applications in enzyme production for plant cell wall degradation and use in biocontrol. Here, we provide a broad, comprehensive overview of the genomic content of these species for “hot topic” research aspects, including CAZymes, transport, transcription factors, and development, along with a detailed analysis and annotation of less-studied topics, such as signal transduction, genome integrity, chromatin, photobiology, or lipid, sulfur, and nitrogen metabolism inT. reesei,T. atroviride, andT. virens, and we open up new perspectives to those topics discussed previously. In total, we covered more than 2,000 of the predicted 9,000 to 11,000 genes of eachTrichodermaspecies discussed, which is >20% of the respective gene content. Additionally, we considered available transcriptome data for the annotated genes. Highlights of our analyses include overall carbohydrate cleavage preferences due to the different genomic contents and regulation of the respective genes. We found light regulation of many sulfur metabolic genes. Additionally, a new Golgi 1,2-mannosidase likely involved inN-linked glycosylation was detected, as were indications for the ability ofTrichodermaspp. to generate hybrid galactose-containingN-linked glycans. The genomic inventory of effector proteins revealed numerous compounds unique toTrichoderma, and these warrant further investigation. We found interesting expansions in theTrichodermagenus in several signaling pathways, such as G-protein-coupled receptors, RAS GTPases, and casein kinases. A particularly interesting feature absolutely unique toT. atrovirideis the duplication of the alternative sulfur amino acid synthesis pathway.

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“…Paralelamente se trabajó con un testigo comercial (Sigma, lote 35082-49-6). La concentración de cercosporina se determinó midiendo la absorbancia de los sobrenadantes obtenidos a 480 nm y utilizando un coeficiente de extinción molar de 23.300 [4]. Dichos experimentos se realizaron por duplicado.…”

Section: Capacidad De Producción De Cercosporina In Vitrounclassified

Cercospora kikuchii aislada en la provincia de Santa Fe (Argentina): variabilidad genética y producción de cercosporina in vitro

González

Turino

Rapela

et al. 2008

Revista Iberoamericana de Micología

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Los objetivos del trabajo fueron analizar la variabilidad genética y la producción de cercosporina in vitro de los aislamientos regionales de Cercospora kikuchii obtenidos a partir de soja cultivada en la región centro-norte de la provincia de Santa Fe (Argentina) y evaluar si existía relación entre los perfiles de RAPD obtenidos y la producción de la toxina. Se utilizó la cepa C. kikuchii NBRC 6711 y 13 aislamientos obtenidos de plantas de soja, con síntomas de tizón de la hoja. La producción y cuantificación de cercosporina se analizó previo cultivo en agar papa dextrosa. La toxina se extrajo en medio alcalino y su concentración se determinó por espectrofotometría. La población de C. kikuchii estudiada resultó variable genéticamente, detectándose nueve grupos, y en su capacidad de producir cercosporina in vitro. No se encontró relación entre la producción de la toxina y los perfiles por RAPD.

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Involvement of Calcium/Calmodulin Signaling in Cercosporin Toxin Biosynthesis byCercosporanicotianae

Cited by 54 publications

References 50 publications

Leaf spot disease on Tilia cordata caused by the fungus Cercospora microsora

Leaf spot disease on Tilia cordata caused by the fungus Cercospora microsora

The Genomes of Three Uneven Siblings: Footprints of the Lifestyles of Three Trichoderma Species

Cercospora kikuchii aislada en la provincia de Santa Fe (Argentina): variabilidad genética y producción de cercosporina in vitro

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