Transporte, patogenicidade e transmissibilidade de fungos associados às sementes de pinhão manso

Sá, Danila Alves Corrêa de; Santos, Gil Rodrigues dos; Furtado, Gleiber Quintão; Erasmo, Eduardo Andrea Lemus; Nascimento, Ildon Rodrigues do

doi:10.1590/s0101-31222011000400008

Cited by 12 publications

(14 citation statements)

References 3 publications

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“…The assay was conducted in incubation chamber at 24 ± 2 °C of temperature and photoperiod of 12 hours during seven days (Sá et al, 2011). At the end of this period, the fungi growth was evaluated.…”

Section: Assay I -Incidencementioning

confidence: 99%

“…In order to quantify the spores, a Neubauer chamber was used, and the suspensions were prepared in fungi communities cultivated in PDA media and incubated for eight days, under temperature of 25 ºC and photoperiod of 12 hours (Sá et al, 2011). After the inoculation, the seedlings were maintained in dark humid chamber, for 72 hours and were later transferred to a greenhouse for 20 days.…”

Section: Assay II -Pathogenicitymentioning

confidence: 99%

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Sanitary analysis, transmission and pathogenicity of fungi associated with forage plant seeds in tropical regions of Brazil

et al. 2014

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-Brazil is a major producer and exporter of beef in the world, 90% of the production is made in pasture and 85% of cultivated pastures in the country are Brachiaria sp. With a growing livestock industry in the recent years, several forage plant diseases became significant importance for causing losses in pasture productivity and quality. This study aims at quantifying the species of fungi associated with seeds and their frequency in forage plants from tropical regions of Brazil. Assays were performed considering: incidence, pathogenicity and seed-seedling transmission of fungi associated with seeds. Therefore, 28 lots of forage species seeds produced in the harvest of 2010-2011 were used. Fourteen genera of fungi associated with seeds were found, among which Bipolaris sp., Phoma sp., and Curvularia sp. had pathogenic potential. It was possible to note that Bipolaris sp., is prejudicial to forage seedlings of Brachiaria, Panicum and Crotalaria. Bipolaris sp. and Curvularia sp. have an average of seed-seedling transmission of 100% and 90%, respectively.

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Section: Assay I -Incidencementioning

confidence: 99%

Section: Assay II -Pathogenicitymentioning

confidence: 99%

Sanitary analysis, transmission and pathogenicity of fungi associated with forage plant seeds in tropical regions of Brazil

et al. 2014

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“…Thus, fungal transmission rate depends on the amount and localization of the inoculum in seeds (Sá et al, 2011). Due to this, the inoculation period adopted in this work might have provoked the dissemination of the pathogen to seed embryo tissues.…”

Section: Resultsmentioning

confidence: 99%

Protection of Sideroxylon obtusifolium seeds against Colletotrichum sp. with Caesalpinia ferrea extract

Melo¹,

Medeiros²,

JÃonior³

et al. 2017

Afr. J. Agric. Res.

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Sideroxylon obtusifolium (Roem. & Schul.) Penn. is a native species from Caatinga biome, but due to disorderly exploitation for phytoteraphy industry, it is in danger of extinction. Recent researches report that the diversity of vegetal species in Brazilian semiarid regions, when meticulously assessed through methods that focus on properties of molecules from different plant structures, may present a high potential for the discovery and development of new antifungal substances. The aim of this work was to evaluate the effects of S. obtusifolium seeds treatment with Caesalpinia ferrea extract on the control of Colletotrichum sp. In each treatment, 100 seeds were inoculated with the pathogen through immersion in a suspension of Colletotrichum sp. conidia, and then subjected to the following treatments: Seeds without treatment and not inoculated (T 1 ), seeds infected with Colletotrichum sp. (T 2 ), infected seeds treated with captan fungicide (T 3 ) and infected seeds treated with C. ferrea extract (T 4 ). C. ferrea extract provided a higher protection to S. obtusifolium seeds and seedlings against Colletotrichum sp., indicating that it is a viable and sustainable biotechnological resource against pathogens and a promising molecule for the development of new antifungal substances.

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“…As espécies do gênero Fusarium spp. podem afetar a germinação de sementes, além de causar, também, murchas, podridões, morte de plântulas, aborto de flores e podridões de armazenamento, entre outros sintomas (Sá et al, 2011). Já o gênero Colletotrichum spp.…”

Section: Resultsunclassified

“…Devido ao valor científico e tecnológico agregado às sementes, verifica-se uma crescente demanda por sementes de alta qualidade fisiológica e sanitária; para isso, deve ser avaliada a ocorrência de patógenos nas mesmas (Sá et al, 2011). Alguns patógenos provocam perdas na produtividade de grãos sem, no entanto, afetar a viabilidade das sementes; já outros provocam reduções em rendimento de grãos e causam danos sobre as sementes, as quais terão, como consequência direta, redução da percentagem de germinação e vigor (Vanzolini et al, 2010;Kobayasti et al, 2011).…”

Section: Introductionunclassified

Micro-organismos associados a sementes de pinhão-manso (Jatropha curcas L.)

Panozzo

Zuchi

Pinho

et al. 2013

Agraria

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RESUMOO pinhão-manso é uma cultura perene que se vem destacando como espécie promissora para a produção de biocombustível, pois seus grãos possuem potencial de gerar em torno de 50% de óleo. Por se tratar de uma cultura ainda pouco explorada cientificamente, o conhecimento dos aspectos da associação de micro-organismos às sementes, ainda é incipiente. O objetivo da pesquisa foi avaliar a sanidade e identificar os micro-organismos associados a cinco ecótipos de sementes de pinhão-manso. Os tratamentos utilizados foram diferentes ecótipos de sementes de pinhão-manso provenientes de diversas regiões do estado de Minas Gerais (ecótipo Uberlândia 1, ecótipo Uberlândia 2, ecótipo Janaúba 1, ecótipo Janaúba 2 e ecótipo Janaúba 3) com e sem desinfestação. Para a avaliação das sementes foram realizados os testes de blotter, germinação e o de emergência de plântulas. Pode-se observar que as sementes de pinhão-manso analisadas apresentam alta frequência de espécies fúngicas independente da desinfestação superficial. Os cinco ecótipos de pinhão-manso provenientes de diferentes regiões do estado de Minas Gerais apresentaram elevados percentuais de germinação e de emergência e não houve sintomas aparentes de transmissão de doenças para plântulas oriundas da germinação e da emergência das sementes em estudo.Palavras-chave: germinação, patologia de sementes, sanidade de sementes, teste de blotter, teste de emergência de plântula Microorganisms associated with seeds of Jatropha curcas L.ABSTRACT Jatropha curcas is a perennial crop that stands out as a promising species for biofuel production because their grains have the potential to generate around 50% of oil. Like this culture is still little explored scientifically, the knowledge of aspects of the association of microorganisms with seeds is still incipient. The aim of this research was to evaluate the sanity and identify microorganisms associated with five ecotypes of Jatropha seeds. The treatments were different ecotypes of Jatropha seeds from different regions of the state of Minas Gerais (ecotype Uberlandia 1, ecotypeUberlandia 2, ecotype Janaúba 1,ecotype Janaúba 2 and ecotype Janaúba 3) with and without disinfection. For the evaluation of seeds were carried blotter test, test germination and seedling. It can be observed that the seeds of Jatropha analyzed showed high frequency of fungal species independent of surface disinfection. The five ecotypes of Jatropha curcas from different regions of the state of Minas Gerais showed high levels of germination, which showed no disease transmission to seedlings from the germination study.

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Transporte, patogenicidade e transmissibilidade de fungos associados às sementes de pinhão manso

Cited by 12 publications

References 3 publications

Sanitary analysis, transmission and pathogenicity of fungi associated with forage plant seeds in tropical regions of Brazil

Sanitary analysis, transmission and pathogenicity of fungi associated with forage plant seeds in tropical regions of Brazil

Protection of Sideroxylon obtusifolium seeds against Colletotrichum sp. with Caesalpinia ferrea extract

Micro-organismos associados a sementes de pinhão-manso (Jatropha curcas L.)

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