scholarly journals New apiaceous hosts of Sclerotinia sclerotiorum in the Cerrado region of Brazil

2011 ◽  
Vol 29 (1) ◽  
pp. 122-124
Author(s):  
A Reis ◽  
WM Nascimento
Keyword(s):  
Sclerotinia Sclerotiorum ◽  
Federal District ◽  
Minas Gerais ◽  
Causal Agent ◽  
White Mold ◽  
Petroselinum Crispum ◽  
Minas Gerais State ◽  
Pathogenicity Tests ◽  
First Time

This paper reports for the first time in the Cerrado region of Brazil the occurrence of white mold caused by Sclerotinia sclerotiorum in coriander (Coriandum sativum), parsley (Petroselinum crispum) and Peruvian carrot (Arracacia xanthorrhiza). The disease was observed on coriander, in Cristalina, Goiás State, on parsley in Gama, the Federal District and on Peruvian carrot in Ibiá, Minas Gerais State. Pathogenicity tests demonstrated that the fungus S. sclerotiorum is the causal agent of the observed symptoms in these plants. The three isolates obtained from naturally infected plants were inoculated in coriander (cv. Verdão), parsley (cv. Lisa Gigante), Peruvian carrot (cv. Amarela de Senador Amaral) and carrot (cv. Forto Nantes) and they were pathogenic to these hosts. The fungus isolates were re-isolated from inoculated plants fulfilling Koch´s postulates and also confirming that S. sclerotiorum is a polyphagous pathogen.

scholarly journals SARS-COV-2 genomic surveillance in the Brazilian Western Amazon region: evolutionary history of epidemic dissemination and genetic signature in Rondônia, Brazil

2020 ◽  
Author(s):  
Luan Felipo Botelho Souza ◽  
Felipe Souza Nogueira Lima ◽  
Tárcio Peixoto Roca ◽  
Alcione de Oliveira dos Santos ◽  
Felipe Gomes Naveca ◽  
...  
Keyword(s):  
Evolutionary History ◽  
Federal District ◽  
Rna Replication ◽  
Minas Gerais ◽  
Northern Region ◽  
The State ◽  
Epidemic Spread ◽  
Incidence And Mortality ◽  
Minas Gerais State ◽  
History Of

Abstract SARS-CoV-2 has spread rapidly around the world, with Brazil currently considered an epicenter of the pandemic. The northern region of the country has the highest incidence and mortality rates. This study aimed to investigate information about the evolutionary history of epidemic spread and genetic aspects of strains isolated on the Western Amazon, in the State of Rondônia, Brazil. It was possible to detect a total of 22 mutations. Some of these alterations may possibly be related to effects on transmissibility, the fidelity of RNA replication, the ability of cancer patients to respond to infection, beyond a mutation that emerged after the introduction of SARS-CoV-2 in Rondônia. At least two events of introduction were detected, corresponding to the B.1 and B.1.1 European lineages. An introduction was observed possibly through Argentina, where strains originated that circulated in the Minas Gerais and Ceará Brazilian states, prior to Rondônia (B.1.), as well as through the Minas Gerais state and the Federal District, which gave rise to strains that spread to Rondônia, from the capital to more rural parts of the state (B.1.1.). The findings show the need to monitor the genetic epidemiology of COVID-19, in order to surveil the virus’s evolution, dispersion and diversity.

Too many floristic inventories? New records in seasonal semi-deciduous forest in the Serra da Mantiqueira in Minas Gerais state answer this question

Rodriguésia ◽  
2021 ◽  
Vol 72 ◽  
Author(s):  
Daniel Elias Ferreira Barbosa ◽  
Geicilaine Alves Basilio ◽  
Luciana Carvalho Pereira ◽  
Diego Rafael Gonzaga ◽  
Alain Chautems ◽  
...  
Keyword(s):  
New Records ◽  
Deciduous Forest ◽  
Minas Gerais ◽  
The State ◽  
Primary Data ◽  
Minas Gerais State ◽  
Great Relevance ◽  
Brazilian Flora ◽  
Floristic Data ◽  
First Time

Abstract The importance of continuously conducting botanical inventories has been questioned in recent decades, generating a lack of investment and interest in this area. However, several applied studies are only possible after obtaining the primary data from such surveys. Despite having the greatest richness of plants known in Brazil, several areas with knowledge gaps remain in Minas Gerais (MG) state. This is the case for the Serra da Mantiqueira, an important area for biodiversity conservation in the country. In this scenario, the phytophysiognomy of Seasonal Semi-deciduous Forest (SSF) deserves attention, as it is broadly distributed and has great relevance in the state, although subsampled. Therefore, this study aimed to present records of species for the flora of MG and discuss the need for floristic surveys in Brazil. These species were recorded in three of 10 studied remnants along expeditions performed between the years of 2012 and 2019 as part of a wide study performed in SSF remnants in the Serra da Mantiqueira which have a deficit of floristic data. Three species are recorded for the first time in MG, one species was rediscovered after more than two centuries from the last collection (which represents its nomenclatural type), in addition to nine other species which must be considered rare in the state. This study contributed to filling gaps in knowledge on Brazilian flora and also demonstrated the relevance of continuing new collections, mainly in specific subsampled areas in the interior of the country such as in SSF remnants.

scholarly journals Species richness of anthophilous butterflies of an Atlantic Forest fragment in Southeastern Brazil

Revista CERES ◽  
2012 ◽  
Vol 59 (5) ◽  
pp. 571-579 ◽  
Author(s):  
Kelen Coelho Cruz ◽  
Sileimar Maria Lelis ◽  
Mariana Aparecida Silva Godinho ◽  
Rúbia Santos Fonseca ◽  
Paulo Sérgio Fiúza Ferreira ◽  
...  
Keyword(s):  
Species Richness ◽  
Atlantic Forest ◽  
Minas Gerais ◽  
The State ◽  
Southeastern Brazil ◽  
Forest Fragment ◽  
Semideciduous Forest ◽  
Minas Gerais State ◽  
First Time

The objectives of this study were to identify anthophilous butterflies on psychophilous flowers of four Asteraceae species in an Atlantic Forest fragment in Viçosa, Minas Gerais State, Southeastern Brazil, and to determine whether there are species in common with other lepidopteran inventories of the Southeastern and Midwestern regions of Brazil. It is the first inventory of anthophilous butterflies of a semideciduous forest fragment in Zona da Mata, State of Minas Gerais. A total of 108 species were recorded, representing the fourth largest lepidopteran survey in this State. The results demonstrated that Asteraceae species may be important tools for monitoring anthophilous butterflies. The similarity with other inventories ranged from 1 to 92.55%. Fifteen species were reported for the first time in the State of Minas Gerais, and among them, Melanis alena and Thisbe irenea were observed in this study only.

Exhuming Saint-Hilaire: revision of the Drosera villosa complex (Droseraceae) supports 200 year-old neglected species concepts

Phytotaxa ◽  
2014 ◽  
Vol 156 (1) ◽  
pp. 1 ◽  
Author(s):  
Paulo Minatel Gonella ◽  
Fernando Rivadavia ◽  
Paulo Takeo Sano ◽  
Andreas Fleischmann
Keyword(s):  
Morphological Characters ◽  
Minas Gerais ◽  
Similar Species ◽  
Distribution Maps ◽  
Narrow Endemic ◽  
Ecological Information ◽  
Minas Gerais State ◽  
Two New Species ◽  
Plateau Central ◽  
First Time

The Drosera villosa complex is here reviewed and includes six species endemic to Brazil: D. villosa, here identified for the first time as a narrow endemic species native to the neighboring highlands of the Serra Negra and Serra do Ibitipoca, in southern Minas Gerais state; D. ascendens, rediscovered nearly 200 years after its description, narrowly endemic to the Diamantina Plateau, central Minas Gerais; D. graomogolensis, endemic to northern Minas Gerais, but here found to be more widespread than previously reported; D. latifolia, a highly polymorphic and widespread taxon, previously placed in synonymy of D. villosa and heretofore misidentified as D. ascendens, is here elevated to species rank; and two new species here described, D. riparia and D. chimaera. Furthermore, two new natural hybrids are reported: D. villosa × D. tomentosa var. glabrata and D. latifolia × D. tomentosa. The morphological characters distinguishing these taxa from each other and from similar species are discussed, together with habitat and ecological information, detailed illustrations and photographs, distribution maps, and a key to the species of the D. villosa complex is provided. 

scholarly journals Progress of White Rot on Garlic Cultivars Planted at Different Times

Plant Disease ◽  
1998 ◽  
Vol 82 (10) ◽  
pp. 1142-1146 ◽  
Author(s):  
Cleide M. F. Pinto ◽  
Luiz A. Maffia ◽  
Richard D. Berger ◽  
Eduardo S. G. Mizubuti ◽  
Vicente W. D. Casali
Keyword(s):  
Management Strategy ◽  
Allium Sativum ◽  
Average Duration ◽  
Minas Gerais ◽  
Causal Agent ◽  
White Rot ◽  
Sclerotium Cepivorum ◽  
Early Planting ◽  
Minas Gerais State ◽  
Epidemiological Parameters

In the region of Amarantina, Minas Gerais state, Brazil, four annual experiments with garlic (Allium sativum) were established in fields infested with Sclerotium cepivorum, causal agent of garlic white rot, to investigate the effect of time of planting on the day when disease was first noticed (tonset), incidence at harvest (yf), duration of epidemics (tf — tonset), and the response of five cultivars to white rot. Most epidemiological parameters were similar among cultivars. In 1986 to 1988, no white rot was observed on garlic planted during the warm temperatures in January. The average onset of white rot occurred at different times dependent on the day of planting as average temperatures decreased from January to May. That is, for February plantings, onset occurred after 93 to 140 days (between 1 June and 5 July); for March plantings, about 90 days (15 to 28 June); for mid-April plantings, about 77 days (1 July); and mid-May plantings, about 66 days (20 July). Because of these different times of onset, the average duration of epidemics was shorter for crops planted in February (30 days) compared to crops planted in March (48 days) or April to May (54 to 69 days). In general, most disease (highest incidence and longest duration) occurred on crops planted in March to May. Therefore, severe losses to white rot would be expected when garlic is planted at the traditional times (March and April) in areas infested with sclerotia of S. cepivorum. The early planting of garlic is recommended as an important management strategy to avoid white rot in areas with these infested soils.

scholarly journals Non-volant small mammals (Rodentia and Didelphimorphia) diversity in an isolated area of the Serra da Mantiqueira, Minas Gerais state, Brazil

2020 ◽  
Vol 15 (3) ◽  
pp. 643-662
Author(s):  
Michel Barros Faria ◽  
Rayque De Oliveira Lanes ◽  
Cibele Rodrigues Bonvicino
Keyword(s):  
Small Mammals ◽  
Minas Gerais ◽  
Mammal Species ◽  
Minas Gerais State ◽  
Extreme North ◽  
Oligoryzomys Flavescens ◽  
First Time ◽  
Excellent Tool ◽  
High Diversity ◽  
Southeastern Atlantic

The southeastern Atlantic Forest of the Zona da Mata Mineira is located in the extreme north of Minas Gerais state, Brazil. The Serra da Mantiqueira, is a mountainous region with a high diversity of small non-volant mammal species, several of which are rare species or endemic lineages. The presence of cryptic species in small mammals makes the karyotype an excellent tool for identification and detection of new lineages. We analyzed the karyotype of 14 species: 11 rodents – Abrawayaomys ruschii, Akodon cursor, Blarinomys breviceps, Delomys sublineatus, Juliomys ossitenuis, Oligoryzomys nigripes, Oligoryzomys flavescens, Oxymycterus dasytrichus, Rhipidomys tribei, Sooretamys angouya, and Thaptomys nigrita; and three marsupials – Monodelphis scalops, Philander quica, and Marmosops incanus. We described for the first time the fundamental autosomal number and the morphology of sex chromosomes of Abrawayaomys ruschii, a rare sigmodontine species, and described a new karyotype for Blarinomys. The revision of published karyotypes of the species herein studied enabled the expansion of the geographic distribution of Oligoryzomys nigripes and Delomys sublineatus.

scholarly journals Bryophytes of the Parque Estadual da Serra do Brigadeiro, an Atlantic Forest Remnant in Southeastern Brazil

Hoehnea ◽  
2020 ◽  
Vol 47 ◽  
Author(s):  
Libia Mayerly Cifuentes-García ◽  
Pedro Bond Schwartsburd ◽  
Denilson Fernandes Peralta
Keyword(s):  
Species Richness ◽  
Atlantic Forest ◽  
Endemic Species ◽  
Minas Gerais ◽  
Tree Bark ◽  
Southeastern Brazil ◽  
Floristic Survey ◽  
Forest Remnant ◽  
Minas Gerais State ◽  
First Time

ABSTRACT The objective was to present the floristic survey of the bryophytes of the Parque Estadual da Serra do Brigadeiro. It included an evaluation of the species richness, as well as information about the substrate preference of each species and its geographic distributions in Brazil. We found 208 taxa of bryophytes: one hornwort, 88 liverworts and 119 mosses. This richness represents ca. 26% of the bryoflora of Minas Gerais State and ca. 13% of that known for Brazil. Eighteen of the bryophytes species are endemic to Brazil, whereas 19 species are recorded for the first time in Minas Gerais. The bryoflora showed preference for tree bark (30%) and rock (23%) as substrates. Our data show that the Parque Estadual da Serra do Brigadeiro is an important area for the diversity conservation of Brazilian bryophytes and maintenance of endemic species of the country.

scholarly journals Distribution and composition of Dragonfly and Damselfly species (Odonata) of the upper Rio das Velhas, Ouro Preto, Minas Gerais State, Brazil

2020 ◽  
Vol 60 ◽  
pp. e20206065
Author(s):  
Walter Francisco de Ávila Júnior ◽  
Gustavo Lisboa Vieira Machado ◽  
Frederico Augusto de Atayde Lencioni ◽  
Marco Antônio Alves Carneiro
Keyword(s):  
Species Richness ◽  
Iucn Red List ◽  
Minas Gerais ◽  
Red List ◽  
Water Bodies ◽  
Critically Endangered ◽  
International Union ◽  
Endemic Genus ◽  
Minas Gerais State ◽  
First Time

This paper describes the composition and distribution of Anisoptera and Zygoptera (Odonata) species of the upper Rio das Velhas in the municipality of Ouro Preto, Minas Gerais State, Brazil. A total of 727 specimens of 40 species were collected near water bodies over a period of 23 months between 2015 and 2017. The families with greatest species richness were Libellulidae (13 species), Coenagrionidae (12 species) and Heteragrionidae and Aeshnidae (4 species each). Notable among the species collected were Perilestes fragilis Hagen in Selys, 1862, inhabiting well-preserved forests, Minagrion waltheri Santos, 1965, pertaining a endemic genus of Brazil and the recently described Heteragrion cauei Ávila-Júnior et al., 2017, and three species recorded for the first time for the state: Elasmothemis alcebiadesi (Santos, 1945); Erythrodiplax melanica Borror, 1942 and Erythrodiplax acantha Borror, 1942, the latter is considered Critically Endangered (CR) by the International Union for Conservation of Nature's (IUCN) Red List.

scholarly journals New altitudinal distribution record and updated geographic distribution of the freshwater crab Trichodactylus fluviatilis Latreille, 1828 (Crustacea, Trichodactylidae)

Check List ◽  
2018 ◽  
Vol 14 (6) ◽  
pp. 977-984
Author(s):  
Vanessa Brito-Fonseca ◽  
Carlos Alencar ◽  
Savio Moraes ◽  
Valéria Vale ◽  
Fúlvio Freire
Keyword(s):  
Geographic Distribution ◽  
Species Distribution ◽  
New Record ◽  
Minas Gerais ◽  
Freshwater Crab ◽  
Altitudinal Distribution ◽  
Minas Gerais State ◽  
First Time ◽  
Distribution Record

The freshwater crab Trichodactylus fluviatilis Latreille, 1828 is recorded here for the first time, at an altitude above 1000 m a.s.l. Sampling was performed in the Grota stream in Campos das Vertentes, Minas Gerais state, Brazil. This new record extends the known altitudinal distribution to 1115 m a.s.l., which significantly contributes to understanding the conditioning limits and factors for this species’ distribution. Moreover, the occurrence of an ectosymbiont platyhelminth of the genus Temnocephala is also reported on the crabs collected.

Sclerotinia sclerotiorum Causes Decay and Forms Sclerotia in Potato Tubers in Idaho

2020 ◽  
Vol 21 (4) ◽  
pp. 335-337
Author(s):  
James W. Woodhall ◽  
Lara Brown ◽  
Miranda Harrington ◽  
Nora Olsen ◽  
Jeff Miller ◽  
...  
Keyword(s):  
Sclerotinia Sclerotiorum ◽  
White Mold ◽  
Potato Tubers ◽  
Dry Rot ◽  
Inoculation Methods ◽  
Tuber Infection ◽  
Agar Plug ◽  
Pathogenicity Tests

Potato tubers (cultivar ‘Austrian Crescent’) displaying a dry rot decay symptom and internal sclerotia were received for diagnosis. Isolations were attempted from symptomatic material, and Sclerotinia sclerotiorum was frequently recovered. Pathogenicity tests for S. sclerotiorum in potato tubers were completed using agar plugs with S. sclerotiorum placed over tuber wounds and through injecting stolon end with a S. sclerotiorum hyphal suspension. Both inoculation methods induced decay symptoms, although these were observed less frequently with the agar plug inoculation (37.5%) compared with hyphal injection (100%). S. sclerotiorum was consistently reisolated from inoculated symptomatic tubers. This symptom is rare, but potato growers should be aware that tuber infection is possible when white mold is present.

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