scholarly journals New records of Celoporthe guangdongensis and Cytospora rhizophorae on mangrove apple in China

2020 ◽  
Vol 8 ◽  
Author(s):  
Long Tian ◽  
Jin Xu ◽  
Dan Zhao ◽  
Hua Qiu ◽  
Hua Yang ◽  
...  
Keyword(s):  
Fungal Pathogens ◽  
New Records ◽  
Production Capacity ◽  
Woody Species ◽  
Cryphonectria Parasitica ◽  
Chestnut Blight ◽  
Mangrove Forests ◽  
Cytospora Chrysosperma ◽  
First Time ◽  
Canker Pathogens

Sonneratia apetala Francis Buchanan-Hamilton (Sonneratiaceae, Myrtales), is a woody species with high adaptability and seed production capacity. S. apetala is widely cultivated worldwide as the main species for mangrove construction. However, the study of diseases affecting S. apetala is limitted, with only a few fungal pathogens being recorded. Cryphonectriaceae (Diaporthales) species are the main pathogens of plants. They can cause canker diseases to several trees and thereby seriously threaten the health of the hosts. These pathogens include Cryphonectria parasitica (Cryphonectriaceae) causing chestnut blight on Castanea (Rigling and Prospero 2017) and Cytospora chrysosperma (Cytosporaceae) causing polar and willow canker to Populus and Salix (Wang et al. 2015) . Therefore, the timely detection of of Cryphonectriaceae canker pathogens on S. apetala is extremely important for protecting the mangrove forests. Two diaporthalean fungi, Celoporthe guangdongensis and Cytospora rhizophorae have been reported for the first time to cause canker on the branches of S. apetala. C. guangdongensis is significantly pathogenic and C. rhizophorae is saprophytic on S. apetala.

scholarly journals Studies of Cryphonectria parasitica (MURR.) BARR subpopulations on Quercus petraea in Ukraine

2011 ◽  
pp. 70-75
Author(s):  
László Radócz ◽  
Gábor Tarcali ◽  
László Irinyi ◽  
Gábor Görcsös
Keyword(s):  
Fungal Pathogens ◽  
Castanea Sativa ◽  
Cryphonectria Parasitica ◽  
Quercus Petraea ◽  
Carpathian Basin ◽  
Chestnut Blight ◽  
Oak Trees ◽  
Compatibility Group ◽  
Laboratory Examinations ◽  
Blight Disease

Chryphonectria parasitica (Murr.) Barr, the casual agent of chestnut blight disease, which is one of the most important fungal pathogens of chestnut (Castanea sativa). The disease seriously affected the chestnut in Northern-America and in Europe as well. It is important to mention that the pathogen does not only infect the chestnut but oak species (Quercus spp.) also. In the Carpathian-Basin, the chestnut is endemic in the Mecsek mountains, in Zala, in Somogy counties but it also can be found in the Danube-Bend. In the Carpathian-Basin (outside Hungary) the chestnut is found in Slovakia, Ukraine, Romania. In our study bark samples infected by Cryphonectria parasitica were collected from Bobovyshche, Serednje and Rostovjatica (Ukraine). The rate of infected chestnut tree were higher than 90% around Bobovyshche and beside chestnut, the symptoms were detected on oak trees as well. We collected bark samples from chestnut and oak as well and then we isolated the pathogen Cryphonectria parasitica in the lab of University of Debrecen. Symptomatological observations, laboratory examinations on fungus morphology, as well as comparisons of ITS sequency homology were made and approved that the causal agent of new disease was Cryphonectria parasitica. Our results proved that the Cryphonectria. parasitica infects oak trees beside chestnut in the Carpathian-Basin. Further studies are needed to determine the VCG (Vegatative Compatibility Group) group of the Cryphonectria parasitica found on oak trees. 

scholarly journals Extending Chestnut Blight Hypovirus Host Range Within Diaporthales by Biolistic Delivery of Viral cDNA

2002 ◽  
Vol 15 (8) ◽  
pp. 780-789 ◽  
Author(s):  
Atsuko Sasaki ◽  
Mari Onoue ◽  
Satoko Kanematsu ◽  
Kouich Suzaki ◽  
Masaki Miyanishi ◽  
...  
Keyword(s):  
Fungal Pathogens ◽  
Cryphonectria Parasitica ◽  
Fungal Species ◽  
Chestnut Blight ◽  
Practical Applications ◽  
Chestnut Blight Fungus ◽  
Delivery Technique ◽  
Virulence Attenuation ◽  
Viral Cdna ◽  
Valsa Ceratosperma

Biolistic bombardment was used to successfully transform three phytopathogenic fungal species with an infectious cDNA clone of the prototypic hypovirus, CHV1-EP713, a genetic element responsible for the virulence attenuation (hypovirulence) of the chestnut blight fungus, Cryphonectria parasitica. The fungal species included two strains each of C. parasitica and Valsa ceratosperma, as well as one strain of Phomopsis G-type (teleomorph Diaporthe Nitschke); all are members of the order Diaporthales but classified into three different genera. A subset of transformants for each of the fungal species contained CHV1-EP713 dsRNA derived from chromosomally integrated viral cDNA. As has been reported for CHV1-EP713 infection of the natural host C. parasitica, biolistic introduction of CHV1-EP713 into the new fungal hosts V. ceratosperma and Phomopsis G-type resulted in altered colony morphology and, more importantly, reduced virulence. These results suggest a potential for hypoviruses as biological control agents in plant-infecting fungal pathogens other than the chestnut blight fungus and closely related species. In addition, the particle delivery technique offers a convenient means of transmitting hypoviruses to potential host fungi that provides new avenues for fundamental mycovirus research and may have practical applications for conferring hypovirulence directly on infected plants in the field.

scholarly journals The development of population structure of Cryphonectria parasitica on European chestnut (Castanea sativa Mill.) in the Experimental Castanetarium Horné Lefantovce, observed over a 12-year study period

2009 ◽  
Vol 36 (No. 2) ◽  
pp. 55-60 ◽  
Author(s):  
K. Adamčíková ◽  
M. Kobza ◽  
G. Juhásová
Keyword(s):  
Population Structure ◽  
Castanea Sativa ◽  
Morphological Characters ◽  
Cryphonectria Parasitica ◽  
Chestnut Blight ◽  
Experimental Plot ◽  
Disease Symptoms ◽  
European Chestnut ◽  
Blight Disease ◽  
First Time

: We studied occurrence of chestnut blight disease in the Experimental Castanetarium Horné Lefantovce, SW Slovakia. The study ran in years 2006–2007 on a set consisting of 889 chestnut trees growing in the clonal orchard on Biological Plot 105. From this number, 857 trees were found healthy without disease symptoms. The chestnut blight disease was identified on 32 of them. The infected trees were examined for presence of pycnidia and perithecia of the causal agent. In all positive cases, the observed morphological characters indicated virulency of the obtained isolates. No hypovirulent isolate was detected on the evaluated experimental plot. In total, six vegetative compatibility (vc) types were specified in the sample consisting of 31 isolates. Our vc types corresponded to the European vc types EU 2, EU 12, EU 13, EU 14, EU 17, EU 19. Two vc types – EU 2 and EU 19 – were dominant. Vc type EU 19 accounted 35.5% and EU 2 32.2% of isolates. The vc type EU 19, which was the most frequent one in the evaluated site, was detected in Slovakia for the first time.

scholarly journals Molecular studies on Cryphonectria parasitica isolates from Carpathian-basin

2011 ◽  
pp. 76-80
Author(s):  
László Irinyi ◽  
Gábor Görcsös ◽  
László Radócz
Keyword(s):  
Molecular Markers ◽  
Fungal Pathogens ◽  
Cryphonectria Parasitica ◽  
Fungal Species ◽  
Carpathian Basin ◽  
Chestnut Blight ◽  
Translation Elongation ◽  
Molecular Analyses ◽  
Molecular Studies ◽  
The Future

Chryphonectria parasitica, the casual agent of chestnut blight, is one of the most important fungal pathogens of chestnut (Castanea spp.) in Europe and Hungary. In this study we analyzed the diversity of 14 Cryphonectria parasitica strains isolated from different location of Carpathian-Basin. For the analyses we used the partial sequences of the translation elongation coding gene, tef1. Our results showed that the tef1 gene, contrary to other fungal species, is not suitable for the molecular analyses of C. parasitica. In the future, for the molecular studies of C. parasitica, we need to use other molecular markers like microsatellites.

scholarly journals Laboratory diagnoses of the isolates of chestnut blight disease fungus Cryphonectria parasitica (MURR. BARR)

2010 ◽  
pp. 45-52
Author(s):  
László Radócz ◽  
László Irinyi ◽  
Károly Egyed
Keyword(s):  
Phylogenetic Relationships ◽  
Fungal Pathogens ◽  
Its Region ◽  
Cryphonectria Parasitica ◽  
Evolutionary Distance ◽  
Its Sequences ◽  
Chestnut Blight ◽  
Parsimony Analysis ◽  
Blight Disease

Chryphonectria parasitica, the casual agent of chestnut blight, is one of the most important fungal pathogens of chestnut (Castanea spp.) in Europe and Hungary. In this study, we analyzed the ITS region of five Cryphonectria parasitica strains isolated from different location of Hungary. The differences among the Cryphonectria parasitica isolates were not insignificant because only two sites were considered as informative for the parsimony analysis. As the differences among geographically different isolates were insignificant, we mean that the evolutionary distance by ITS sequences within Hungarian Cryphonectria parasitica isolates is too small to get well based consequences for the phylogenetic relationships.

scholarly journals Mamíferos del Parque Nacional Nombre de Dios, costa caribeña de Honduras, con nuevos registros para el Departamento de Atlántida

2014 ◽  
Vol 6 (2) ◽  
pp. 233-237
Author(s):  
Julio Enrique Mérida Colindres ◽  
Gustavo Adolfo Cruz
Keyword(s):  
Central America ◽  
Endemic Species ◽  
National Park ◽  
New Records ◽  
Mangrove Forests ◽  
Species List ◽  
Coastal Lakes ◽  
Tropical Wet Forest ◽  
First Time ◽  
Forest C

This is a preliminary species list for the mammals of Nombre de Dios National Park (PNND) based on 5 visits to 8 sampling sites in the following systems: a) low montane wet forest, b) Sub tropical wet forest, c) within the limits of these forests, and d) in Mangrove Forests of two coastal lakes.  We recorded 43 species belonging to 6 orders: Marsupialia, Xenarthra, Chiroptera, Primates, Perissodactyla, and Rodentia. The order with more families was Rodentia (6 = 35%), followed by Chiroptera with (5 = 29%). Nine species are in CITES, three in Appendix I, two in Appendix II  and three in Appendix III. We recorded the bat Hylonycteris underwoodi for the first time for Honduras and an endemic species from Central America Rhogeessa menchaue inhabits the park. There are 24 new records for Atlantis.

New records of Ephemeroptera from the Colombian Orinoco river basin of the Meta department

2017 ◽  
Vol 43 (2) ◽  
pp. 271
Author(s):  
Luis Gonzalo Salinas-Jiménez ◽  
José Ismael Rojas-Peña ◽  
Diana Paola Osorio-Ramírez ◽  
Clara Inés Caro-Caro
Keyword(s):  
River Basin ◽  
New Records ◽  
Andean Region ◽  
Orinoco River ◽  
First Time

There is extensive research of the Ephemeroptera communities taxonomy and ecology in the Andean region of Colombia. However, other regions such as the Orinoquia have been insufficiently studied. From this region, in the Meta department, four species have been registered: Varipes lasiobrachius Lugo-Ortiz & McCafferty, Coryphorus aquilus Peters, Miroculis (Atroari) colombiensis Savage & Peters and Tricorythopsis rondoniensis (Dias, Cruz & Ferreira). The main objective of this study is to report for the first time for this region the species: Mayobaetis ellenae (Mayo), Hydrosmylodon primanus (Eaton), Haplohyphes baritu Domínguez, Camelobaetidus edmundsi Dominique, Mathuriau & Thomas and Nanomis galera Lugo-Ortiz & McCafferty.

Spider diversity in the Bukit Timah Nature Reserve, Singapore

2019 ◽  
Vol 71 ((suppl.1)) ◽  
pp. 209-243
Author(s):  
J.K.H. Koh ◽  
D.J. Court
Keyword(s):  
Nature Reserve ◽  
New Records ◽  
Secondary Forest ◽  
Distinct Species ◽  
Primary Forest ◽  
Preliminary Results ◽  
Vegetation Zones ◽  
Comprehensive Survey ◽  
Quantitative Analyses ◽  
First Time

This paper discusses the preliminary results of the first comprehensive survey of the spiders of the Bukit Timah Nature Reserve (BTNR) in Singapore. Two plots were established in each of the three zones of vegetation, viz., primary forest, old secondary forest, and maturing secondary forest. They were repeatedly sampled over an 18-month period. Sorting of the collection so far suggests that the three vegetation zones harbour rather different spider assemblages. Only ~9% of the total spider fauna recovered was shared by all three zones. The results have also yielded a preliminary picture of dominance, abundance and rarity. Although first intended to obtain a baseline for future quantitative analyses, the survey became a testing ground to modify and refine methodology so as to conduct future quantitative surveys with greater scientific rigour. Taxonomic work on the samples so far shows that the spiders in the BTNR span over 43 families, of which six families are listed for the first time in Singapore. The tally is summarised in an interim checklist of BTNR spiders. The checklist, with a total of 317 entries, shows that there are 158 described species of spiders in BTNR, of which 25 species are new records for Singapore. Another 159 morphospecies are provisionally recognised as distinct species, some of which may be new to science. Our observations during the survey have allowed us to provide a narrative of BTNR spider diversity against a backdrop of their microhabitat specialisation.

New records of aphyllophoroid fungi (Basidiomycota) for the Khanty-Mansi Autonomous Area — Yugra (West Siberia)

2020 ◽  
Vol 54 (2) ◽  
pp. 387-396
Author(s):  
I. V. Stavishenko
Keyword(s):  
Animal Ecology ◽  
New Records ◽  
West Siberia ◽  
The West ◽  
First Time ◽  
Khanty Mansi Autonomous ◽  
Aphyllophoroid Fungi

The paper provides data on records of 29 species of aphyllophoroid fungi new for the the Khanty-Mansi Autonomous Area — Yugra. Among them 10 species (Amaurodon cyaneus, Amyloxenasma allantosporum, Asterostroma laxum, Byssoporia terrestris, Paullicorticium pearsonii, Pseudomerulius montanus, Sistotrema sernanderi, Skeletocutis alutacea, S. ochroalba, Tubulicrinis orientalis) are published for the first time for Siberia, and 3 species (Scytinostroma praestans, Tomentellopsis zygodesmoides, Tubulicrinis strangulatus) are new for the West Siberia. Data on their locations, habitats and substrates in region are indicated. The specimens are kept in the Museum of the Institute of Plant and Animal Ecology of the Ural Branch of the RAS (SVER).

New records of some rare species in the family Hyaloscyphaceae (Ascomycota, Helotiales) from Central Russia

2013 ◽  
Vol 47 ◽  
pp. 135-142
Author(s):  
E. S. Popov
Keyword(s):  
Rare Species ◽  
New Records ◽  
Moscow Region ◽  
North Caucasus ◽  
Central Russia ◽  
The Family ◽  
First Time

Three rare species of discomycetes in the family Hyaloscyphaceae are reported from Central Russia (Oryol and Bryansk Regions). Proliferodiscus tricolor is recorded for the first time in Russia. Comments are made on Aeruginoscyphus sericeus and Eriopezia caesia previously reported only from Moscow Region and North Caucasus respectively.

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