Germination and growth of Colletotrichum acutatum and Colletotrichum gloeosporioides isolates from coffee in Papua New Guinea and their pathogenicity to coffee berries

Kenny, M. K.; Galea, Victor J.; Price, T. V.

doi:10.1007/s13313-012-0117-7

Cited by 22 publications

(16 citation statements)

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“…Sin embargo, pruebas en dichas condiciones son necesarias para confirmar lo observado en el laboratorio, ya que, para otras especies del género Colletotrichum, los resultados de laboratorio no siempre corresponden con los de campo. Además, es necesario tomar en cuenta que la eficacia de los fungicidas en el campo es influenciada por factores externos, entre ellos la precipitación, el método de aplicación, la cobertura del follaje y la redistribución del fungicida (Wong y Midland, 2007;Kenny et al, 2012). Cuadro 3.…”

Section: Resultados Y Discusiónunclassified

“…Sin embargo, en algunas situaciones, como la selección de fungicidas para su posterior evaluación en campo, se prefiere un método que incluya la inoculación del tejido del hospedante (in vivo), ya que se asemeja más a la situación real (Kenny et al, 2012). Por ello, en este estudio se utilizó el sistema de inoculación en hojas separadas, colocadas en cajas plásticas y en condiciones de laboratorio (Pérez-León et al, 2013).…”

Section: Materiales Y Métodosunclassified

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Combate químico de la antracnosis de Sansevieria trifasciata var. Hahnii en un sistema de hojas separadas.

et al. 2015

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RESUMENCombate químico de la antracnosis de Sansevieria trifasciata var. Hahnii en un sistema de hojas separadas. El objetivo de este trabajo fue evaluar fungicidas para el combate de antracnosis en Sansevieria trifasciata var. Hahnii. Se evaluaron doce fungicidas (solos o en mezcla) sobre la infección y severidad de C. sansevieriae en un sistema de hojas separadas. Los fungicidas utilizados fueron azoxistrobina, boscalid + piraclostrobina, carbendazina + mancozeb, difenoconazol, epoxiconazol + carbendazina, folpet, imazalil, metil tiofanato + mancozeb, miclobutanil y prochloraz. El estudio se llevó a cabo en el Laboratorio de Biotecnología de Plantas del Centro de Investigaciones Agronómicas, Universidad de Costa Rica, durante el primer semestre del año 2012. La aplicación de los tratamientos se realizó por aspersión el día de la inoculación o tres días después de esta (0 y 3 ddi). A los siete, once y quince días después de la inoculación se evaluó el número y diámetro de las lesiones. El fungicida, el momento de aplicación, la interacción fungicida x momento de aplicación y la interacción fungicida x día de evaluación afectaron significativamente (p<0,0001) las variables evaluadas. Azoxistrobina, boscalid + piraclostrobina, carbendazina + mancozeb, epoxiconazol + carbendazina y metil tiofanato + mancozeb proveyeron un 100% de protección de las hojas de Sansevieria durante todo el período de evaluación (quince días), cuando se aplicaron el mismo día de la inocualción (0 ddi). A los 3 ddi, solo epoxiconazol + carbendazina inhibió en un 100% el establecimiento del patógeno (incidencia cero), en las tres evaluaciones. Con los tratamientos azoxistrobina y carbendazina + mancozeb también se obtuvo un 0% de incidencia a los siete y once días de evaluación para el primero y a los siete días para el segundo.Palabras clave: Lengua de suegra, Colletotrichum sansevieriae, fungicidas para C. sansevieriae. ABSTRACTChemical control of anthrachnose of Sansevieria trisfasciata var. Hahnii on a detached-leaf system. The objective of this work was to assess fungicides to combat Sansevieria trifasciata var. Hahnii anthracnose. Twelve fungicides (alone or in mixture) were evaluated on the infection and severity of C. sansevieriae on a detached-leaf system. Fungicides used were azoxystrobin, boscalid + pyraclostrobin, carbendazim + mancozeb, difenoconazole, epoxiconazole + carbendazim, folpet, imazalil, thiophanatemethyl + mancozeb, myclobutanil, and prochloraz. The study was carried out at the Plant Biotechnology Laboratory of the Agricultural Research Center of the University of Costa Rica, during the first semester of 2012. Each chemical treatment was applied by aspersion on the day of inoculation (0 dai) or three days after it (3 dai). The number and diameter of the lesions were evaluated after seven, eleven and fifteen dai. Fungicide, application moment, fungicide x application moment interaction and fungicide x evaluation moment interaction significantly affected (p<0,0001) both evaluated variables. Azoxystrobin, boscalid + p...

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Section: Resultados Y Discusiónunclassified

Section: Materiales Y Métodosunclassified

Combate químico de la antracnosis de Sansevieria trifasciata var. Hahnii en un sistema de hojas separadas.

et al. 2015

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“…Bogo et al 2012, Deng et al 2012, Kenny et al 2012, Parvin et al 2012, and Zhang et al 2012). In this paper we accept both concepts as useful and valid.…”

Section: Introductionmentioning

confidence: 99%

The Colletotrichum gloeosporioides species complex

Weir¹,

Johnston²,

Damm³

2012

Studies in Mycology

1,303

1,129

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The limit of the Colletotrichum gloeosporioides species complex is defined genetically, based on a strongly supported clade within the Colletotrichum ITS gene tree. All taxa accepted within this clade are morphologically more or less typical of the broadly defined C. gloeosporioides, as it has been applied in the literature for the past 50 years. We accept 22 species plus one subspecies within the C. gloeosporioides complex. These include C. asianum, C. cordylinicola, C. fructicola, C. gloeosporioides, C. horii, C. kahawae subsp. kahawae, C. musae, C. nupharicola, C. psidii, C. siamense, C. theobromicola, C. tropicale, and C. xanthorrhoeae, along with the taxa described here as new, C. aenigma, C. aeschynomenes, C. alatae, C. alienum, C. aotearoa, C. clidemiae, C. kahawae subsp. ciggaro, C. salsolae, and C. ti, plus the nom. nov. C. queenslandicum (for C. gloeosporioides var. minus). All of the taxa are defined genetically on the basis of multi-gene phylogenies. Brief morphological descriptions are provided for species where no modern description is available. Many of the species are unable to be reliably distinguished using ITS, the official barcoding gene for fungi. Particularly problematic are a set of species genetically close to C. musae and another set of species genetically close to C. kahawae, referred to here as the Musae clade and the Kahawae clade, respectively. Each clade contains several species that are phylogenetically well supported in multi-gene analyses, but within the clades branch lengths are short because of the small number of phylogenetically informative characters, and in a few cases individual gene trees are incongruent. Some single genes or combinations of genes, such as glyceraldehyde-3-phosphate dehydrogenase and glutamine synthetase, can be used to reliably distinguish most taxa and will need to be developed as secondary barcodes for species level identification, which is important because many of these fungi are of biosecurity significance. In addition to the accepted species, notes are provided for names where a possible close relationship with C. gloeosporioides sensu lato has been suggested in the recent literature, along with all subspecific taxa and formae speciales within C. gloeosporioides and its putative teleomorph Glomerella cingulata.Taxonomic novelties:Name replacement - C. queenslandicum B. Weir & P.R. Johnst. New species - C. aenigma B. Weir & P.R. Johnst., C. aeschynomenes B. Weir & P.R. Johnst., C. alatae B. Weir & P.R. Johnst., C. alienum B. Weir & P.R. Johnst, C. aotearoa B. Weir & P.R. Johnst., C. clidemiae B. Weir & P.R. Johnst., C. salsolae B. Weir & P.R. Johnst., C. ti B. Weir & P.R. Johnst. New subspecies - C. kahawae subsp. ciggaro B. Weir & P.R. Johnst. Typification: Epitypification - C. queenslandicum B. Weir & P.R. Johnst.

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“…gloeosporioides isolates from coffee are pathogenic only on ripe berries and leaves and are unable to infect green berries (Waller et al ., ). This was confirmed in laboratory trials in Papua New Guinea (Kenny et al ., ). The present study showed that all the eight species isolated from coffee in Hainan are pathogenic to red fruits of both coffee varieties.…”

Section: Discussionmentioning

confidence: 97%

Characteristics and distribution of Colletotrichum species in coffee plantations in Hainan, China

Cao

et al. 2019

Plant Pathology

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Anthracnose caused by Colletotrichum species is a serious disease on a range of economically important hosts. To determine the Colletotrichum species in coffee plantations in Hainan, China, 55 isolates were obtained from Coffea arabica (arabica) and C. canephora var. robusta (robusta) in five counties. Initially, partial sequences of glyceraldehyde-3-phosphate dehydrogenase (GAPDH) were used to measure fungal genetic diversity. Then a subset of 23 isolates was selected to represent the range of genetic diversity, varieties and geographic origin for further multilocus phylogenetic analyses. These isolates belong to eight known Colletotrichum species from three Colletotrichum species complexes, including gloeosporioides (C. endophytica, C. fructicola, C. ledongense, C. siamense and C. tropicale), boninense (C. karstii), gigasporum (C. gigasporum), and one singleton species (C. brevisporum). Of these, C. siamense was isolated in all sampled counties and C. fructicola was identified in three counties. The other six species were isolated only in one or two counties. Only C. siamense and C. fructicola were isolated from arabica, whereas all eight species were isolated from robusta. Occurrence of C. brevisporum, C. endophytica, C. ledongense and C. tropicale in coffee has not been reported previously. Pathogenicity tests showed that all eight species were pathogenic to coffee leaves and fruit. In vitro tests showed that Colletotrichum isolates from coffee in Hainan were most sensitive to prochloraz, less sensitive to carbendazim, propiconazole and difenoconazole, and least sensitive to myclobutanil.

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Germination and growth of Colletotrichum acutatum and Colletotrichum gloeosporioides isolates from coffee in Papua New Guinea and their pathogenicity to coffee berries

Cited by 22 publications

References 29 publications

Combate químico de la antracnosis de Sansevieria trifasciata var. Hahnii en un sistema de hojas separadas.

Combate químico de la antracnosis de Sansevieria trifasciata var. Hahnii en un sistema de hojas separadas.

The Colletotrichum gloeosporioides species complex

Characteristics and distribution of Colletotrichum species in coffee plantations in Hainan, China

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