Sami Jorge Michereff
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View article: <scp>PCR</scp> With Specific Primers for Detection of <i>Rhizoctonia solani</i> Anastomosis Groups Reveals Lack of Specificity
<span>PCR</span> With Specific Primers for Detection of <i>Rhizoctonia solani</i> Anastomosis Groups Reveals Lack of Specificity Open
Several specific primers based on the internal transcribed spacer (ITS) region of rDNA have been used to discriminate anastomosis groups (AGs) and subgroups in Rhizoctonia solani , but the efficacy of these primers was not evaluated consid…
View article: Development and validation of a standard area diagram (SAD) set for assessing Alternaria black spot severity in pecan leaves
Development and validation of a standard area diagram (SAD) set for assessing Alternaria black spot severity in pecan leaves Open
Pecan (Carya illinoinensis) cultivation is expanding in Argentina, with Catamarca Province emerging as a significant production region. However, fungal diseases such as Alternaria black spot (ABS), caused by Alternaria spp., pose an increa…
View article: Development and Validation of a Standard Area Diagram Set for Assessment of Target Leaf Spot Severity on <scp> <i>Handroanthus serratifolius</i> </scp>
Development and Validation of a Standard Area Diagram Set for Assessment of Target Leaf Spot Severity on <span> <i>Handroanthus serratifolius</i> </span> Open
Target leaf spot, caused by Corynespora cassiicola , is a common disease on Handroanthus serratifolius (yellow ipe) in Brazil. This study aimed to develop and validate a standard area diagram (SAD) set to estimate the severity of target sp…
View article: First Worldwide Report of <i>Fusarium pernambucanum</i> Causing Postharvest Fruit Rot on <i>Citrullus lanatus</i>
First Worldwide Report of <i>Fusarium pernambucanum</i> Causing Postharvest Fruit Rot on <i>Citrullus lanatus</i> Open
Watermelon is grown in Brazil for domestic consumption and export. In March 2022, asymptomatic watermelon fruits were collected in a commercial field located in Apodi, Rio Grande do Norte, Brazil. Fruits were placed in a humid chamber, and…
View article: Diversity of Colletotrichum Species Causing Anthracnose in Chayote in Brazil, with a Description of Two New Species in the C. magnum Complex
Diversity of Colletotrichum Species Causing Anthracnose in Chayote in Brazil, with a Description of Two New Species in the C. magnum Complex Open
Anthracnose caused by Colletotrichum species is the most important disease of chayote (Sicyos edulis) in Brazil. The etiology of chayote anthracnose has been assigned to the species C. orbiculare, an important plant pathogenic fungus also …
View article: Sistemas de produção da Musa spp. no Cariri cearense, Brasil: caracterização, indicadores de sustentabilidade e químicos do solo
Sistemas de produção da Musa spp. no Cariri cearense, Brasil: caracterização, indicadores de sustentabilidade e químicos do solo Open
A banana (Musa spp.) é a fruta mais consumida no mundo. A região do Cariri cearense tem cerca de 2,9 mil hectares cultivados com bananeira, sendo uma das regiões mais produtoras do país. Apesar da importância da produção de banana para a r…
View article: Diversity and pathogenicity of anastomosis groups of Rhizoctonia solani isolates associated with potato diseases in northern Sinaloa, Mexico
Diversity and pathogenicity of anastomosis groups of Rhizoctonia solani isolates associated with potato diseases in northern Sinaloa, Mexico Open
Potato production is affected by Rhizoctonia solani, causing severe yield losses. The most important criterion for distinguishing R. solani isolates is differentiation by anastomosis groups (AGs). However, the limitations of traditional AG…
View article: Correction: Phylogeny of Pseudoperonospora causing downy mildew of Cucurbitaceae in Brazil
Correction: Phylogeny of Pseudoperonospora causing downy mildew of Cucurbitaceae in Brazil Open
View article: Fusarium kalimantanense causing crown rot on banana in Brazil
Fusarium kalimantanense causing crown rot on banana in Brazil Open
View article: Colletotrichum menezesiae sp. nov.: a novel species causing anthracnose on chayote in Brazil
Colletotrichum menezesiae sp. nov.: a novel species causing anthracnose on chayote in Brazil Open
A new pathogenic Colletotrichum species was isolated from chayote (Sicyos edulis) leaves and fruit presenting typical anthracnose symptoms from fields in Ibirité (Minas Gerais state) and Tijucas (Santa Catarina state), Brazil. The species …
View article: Atividade saprofítica de Rhizoctonia em solos do Nordeste brasileiro e relação com propriedades físicas, químicas e microbiológicas
Atividade saprofítica de Rhizoctonia em solos do Nordeste brasileiro e relação com propriedades físicas, químicas e microbiológicas Open
O fungo Rhizoctonia pode sobreviver no solo por longos períodos sem plantas hospedeiras e condições favoráveis, quase exclusivamente na forma de micélio ativo e escleródios, sendo essa estratégia denominada colonização saprofítica. Este tr…
View article: The Brazilian population of <i>Fusarium oxysporum</i> f. sp. <i>cubense</i> is not structured by VCG or by geographic origin
The Brazilian population of <i>Fusarium oxysporum</i> f. sp. <i>cubense</i> is not structured by VCG or by geographic origin Open
Fusarium wilt, caused by the soil-borne fungus Fusarium oxysporum f. sp. cubense (Foc), is considered one of the most destructive diseases of bananas. Paradoxically, knowledge of the genetics of the pathogen population in the Americas is v…
View article: First report of Neofusicoccum batangarum causing grapevine dieback in Brazil
First report of Neofusicoccum batangarum causing grapevine dieback in Brazil Open
View article: Distribution and Pathogenicity of <i>Colletotrichum</i> Species Associated With Mango Anthracnose in Mexico
Distribution and Pathogenicity of <i>Colletotrichum</i> Species Associated With Mango Anthracnose in Mexico Open
Mango anthracnose, caused by Colletotrichum spp., is the most significant disease of mango (Mangifera indica L.) in almost all production areas around the world. In Mexico, mango anthracnose has only been attributed to C. asianum and C. gl…
View article: Phytotoxins produced by Lasiodiplodia laeliocattleyae involved in Botryosphaeria dieback of grapevines in Brazil.
Phytotoxins produced by Lasiodiplodia laeliocattleyae involved in Botryosphaeria dieback of grapevines in Brazil. Open
Botryosphaeria dieback (BD) is an important trunk disease affecting grapevines. Several Lasiodiplodia species have been shown to be involved in BD affecting the perennial organs of grapevine, mainly causing cankers. (R)-(-)-mellein and tyr…
View article: First report of Macrophomina pseudophaseolina causing stem dry rot in cassava in Brazil
First report of Macrophomina pseudophaseolina causing stem dry rot in cassava in Brazil Open
View article: Identification and pathogenicity of <i>Macrophomina</i> species collected from weeds in melon fields in Northeastern Brazil
Identification and pathogenicity of <i>Macrophomina</i> species collected from weeds in melon fields in Northeastern Brazil Open
In this work, a collection of 94 Macrophomina isolates obtained from roots of two weed species, Trianthema portulacastrum and Boerhavia diffusa, collected during surveys conducted during 2015 and 2016 in melon production fields in Northeas…
View article: Diversity, Prevalence, and Virulence of<i>Colletotrichum</i>Species Associated with Lima Bean in Brazil
Diversity, Prevalence, and Virulence of<i>Colletotrichum</i>Species Associated with Lima Bean in Brazil Open
Anthracnose is one of the most important diseases of lima bean in Brazil. Previously, the disease was attributed exclusively to Colletotrichum truncatum. Therefore, this work aimed to characterize the diversity, prevalence, and virulence o…
View article: REACTION OF MELON GENOTYPES TO THE ROOT´S ROT CAUSED BY Monosporascus
REACTION OF MELON GENOTYPES TO THE ROOT´S ROT CAUSED BY Monosporascus Open
Monosporascus root rot and vine decline (MRRVD) is an important disease in the melon crop in Brazil. In our research, we evaluated the reaction of 45 melon genotypes to M. cannonballus in two successive cropping seasons in a greenhouse. Me…
View article: Genetic diversity and population structure of <i>Lasiodiplodia theobromae</i> from different hosts in northeastern Brazil and Mexico
Genetic diversity and population structure of <i>Lasiodiplodia theobromae</i> from different hosts in northeastern Brazil and Mexico Open
Lasiodiplodia theobromae is one of the most frequent fungal pathogens associated with dieback, gummosis, leaf spot, stem‐end rot and fruit rot symptoms in cashew, mango, papaya and grapevine. In this study, the variation in the genetic div…
View article: REACTION OF MELON GENOTYPES TO THE ROOT´S ROT CAUSED BY Monosporascus
REACTION OF MELON GENOTYPES TO THE ROOT´S ROT CAUSED BY Monosporascus Open
Monosporascus root rot and vine decline (MRRVD) is an important disease in the melon crop in Brazil. In our research, we evaluated the reaction of 45 melon genotypes to M. cannonballus in two successive cropping seasons in a greenhouse. Me…
View article: Diversity and pathogenicity of anastomosis groups of Rhizoctonia associated with potato stem canker and black scurf diseases in Brazil
Diversity and pathogenicity of anastomosis groups of Rhizoctonia associated with potato stem canker and black scurf diseases in Brazil Open
View article: Phylogeny, Distribution, and Pathogenicity of <i>Lasiodiplodia</i> Species Associated With Cankers and Dieback Symptoms of Persian Lime in Mexico
Phylogeny, Distribution, and Pathogenicity of <i>Lasiodiplodia</i> Species Associated With Cankers and Dieback Symptoms of Persian Lime in Mexico Open
Persian lime (Citrus latifolia Tan.) is an important and widely cultivated fruit crop in several regions of Mexico. In recent years, severe symptoms of gummosis, stem cankers, and dieback were detected in the Persian lime-producing region …
View article: Soils of Tropical Dry Forest and with Different Crops Presenting Ascospores of Monosporascus cannonballus
Soils of Tropical Dry Forest and with Different Crops Presenting Ascospores of Monosporascus cannonballus Open
The vine decline caused by Monosporascus cannonballus is a limiting factor in different crops in several countries. The objective of this study was to quantify the M. cannonballus ascospores in soils covered with tropical dry forest and ar…
View article: Temporal conidial dispersal pattern of Botryosphaeriaceae species in table-grape vineyards in Northeastern Brazil
Temporal conidial dispersal pattern of Botryosphaeriaceae species in table-grape vineyards in Northeastern Brazil Open
[EN] A field experiment was conducted between mid-August 2016 and mid-October 2017 in four table-grape vineyards in the Siriji Valley, Pernambuco State (Northeastern Brazil), to study the conidial dispersal dynamics of Botryosphaeriaceae f…
View article: ANÁLISE DE ESCALA DIAGRAMÁTICA PARA AVALIAÇÃO DA SEVERIDADE DA ANTRACNOSE DAS VAGENS DE FEIJÃO-FAVA
ANÁLISE DE ESCALA DIAGRAMÁTICA PARA AVALIAÇÃO DA SEVERIDADE DA ANTRACNOSE DAS VAGENS DE FEIJÃO-FAVA Open
A antracnose das vagens, causada pelo fungo Colletotrichum truncatum, é uma importante doença do feijão-fava no Nordeste brasileiro. Devido à inexistência de métodos padronizados para quantificação desta doença no campo, uma escala diagram…
View article: Thiophanate-Methyl Resistance and Fitness Components of <i>Colletotrichum musae</i> Isolates from Banana in Brazil
Thiophanate-Methyl Resistance and Fitness Components of <i>Colletotrichum musae</i> Isolates from Banana in Brazil Open
Anthracnose, caused by Colletotrichum musae, is the most important postharvest disease of banana and is widely distributed among the banana production regions in Brazil. Although thiophanate-methyl is a fungicide frequently used in Brazili…
View article: Standard Area Diagrams for Aiding Severity Estimation: Scientometrics, Pathosystems, and Methodological Trends in the Last 25 Years
Standard Area Diagrams for Aiding Severity Estimation: Scientometrics, Pathosystems, and Methodological Trends in the Last 25 Years Open
Standard area diagrams (SAD) have long been used as a tool to aid the estimation of plant disease severity, an essential variable in phytopathometry. Formal validation of SAD was not considered prior to the early 1990s, when considerable e…
View article: Influência da adubação verde na severidade do declínio-de-monosporascus em solo naturalmente infestado
Influência da adubação verde na severidade do declínio-de-monosporascus em solo naturalmente infestado Open
A incorporacao de materiais vegetais no solo pode exercer influencia sobre as populacoes dos patogenos e/ou suas atividades patogenicas. Este trabalho objetivou avaliar o potencial da adubacao verde na inducao da supressividade ao declinio…