Potato cyst nematodes’ routine analyses: morphology and/or PCR?
Autor(a) principal: | |
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Data de Publicação: | 2019 |
Outros Autores: | , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
Texto Completo: | https://doi.org/10.19084/rca.17062 |
Resumo: | Potato cyst nematodes (PCN), Globodera rostochiensis and G. pallida, are a serious threat to potato crops worldwide. Due to the risk these two species pose, a national survey was implemented starting in 2010 aiming to know the presence and distribution of these quarantine nematodes in Portugal. This fact has led to an increasing demand to accurately identify the PCN species present in the fields. Usually, the identification is based on morphology followed by molecular analysis. Considering there is at least one laboratory in the EU certified for morphological identification of PCN, the aim of this study was to look into the possibility of using only morphological diagnostic characters for routine purposes. Forty cysts of Globodera were used, for morphological and molecular analyses. Morphological analysis allowed the identification of 23 cysts as G. rostochiensis and 17 cysts as G. pallida and the molecular results revealed that 9 cysts were G. rostochiensis and 31 cysts were G. pallida. Thus, morphological and molecular analyses matched 65%, concluding that in our routine analyses only an initial morphological approach followed by molecular methods enables a reliable identification of PCN species. So, it is recommended to combine both methods. PCR can be ruled out only if the purpose is to detect Globodera nematodes, which is the case of the seed potato fields where the presence of round-cyst nematodes will interdict the seed production. |
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Potato cyst nematodes’ routine analyses: morphology and/or PCR?Análises de rotina para detecção de nemátodes de quisto da batateira: morfologia e/ou PCR?GeralPotato cyst nematodes (PCN), Globodera rostochiensis and G. pallida, are a serious threat to potato crops worldwide. Due to the risk these two species pose, a national survey was implemented starting in 2010 aiming to know the presence and distribution of these quarantine nematodes in Portugal. This fact has led to an increasing demand to accurately identify the PCN species present in the fields. Usually, the identification is based on morphology followed by molecular analysis. Considering there is at least one laboratory in the EU certified for morphological identification of PCN, the aim of this study was to look into the possibility of using only morphological diagnostic characters for routine purposes. Forty cysts of Globodera were used, for morphological and molecular analyses. Morphological analysis allowed the identification of 23 cysts as G. rostochiensis and 17 cysts as G. pallida and the molecular results revealed that 9 cysts were G. rostochiensis and 31 cysts were G. pallida. Thus, morphological and molecular analyses matched 65%, concluding that in our routine analyses only an initial morphological approach followed by molecular methods enables a reliable identification of PCN species. So, it is recommended to combine both methods. PCR can be ruled out only if the purpose is to detect Globodera nematodes, which is the case of the seed potato fields where the presence of round-cyst nematodes will interdict the seed production.Os nemátodes de quisto da batateira (NQB), Globodera rostochiensis e G. pallida, são uma ameaça para a cultura da batata a nível mundial. Devido ao risco que estas duas espécies representam, foi implementado um programa de prospeção nacional a partir de 2010 com o objectivo de detetar a presença e conhecer a distribuição destes nemátodes de quarentena em Portugal. Este facto intensificou a necessidade de determinar com precisão as espécies de NQB presentes nos campos de batata. Geralmente, esta identificação é baseada na avaliação das características morfológicas, confirmada de seguida pela análise molecular. Considerando que existe pelo menos um laboratório na União Europeia certificado para a identificação morfológica de NQB, o objetivo deste estudo foi investigar a possibilidade de identificar estas espécies apenas através das características morfológicas, em análises de rotina. Para as análises morfológicas e moleculares foram utilizados 40 quistos de Globodera sp.. A análise morfológica permitiu identificar 23 quistos como G. rostochiensis e 17 quistos como G. pallida, enquanto que os resultados moleculares para os mesmos quistos permitiram a identificação de 9 quistos como G. rostochiensis e 31 quistos como G. pallida. As análises morfológicas e moleculares apenas coincidiram em 65% dos casos. Concluiu-se que nas nossas análises de rotina apenas a utilização das duas abordagens permite a identificação precisa de espécies de NQB, sendo por isso recomendado combinar sempre os dois métodos. A análise molecular pode ser excluída somente se o objetivo visar a deteção de nemátodes do género Globodera, como é o caso dos campos de batata de semente, onde a presença de qualquer espécie destes nemátodes interditará a produção de semente.Sociedade de Ciências Agrárias de Portugal2019-03-10T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articlehttps://doi.org/10.19084/rca.17062eng2183-041X0871-018XInácio, Maria L.Camacho, Maria J.Rusinque, LeidyNóbrega, FilomenaAndrade, Eugéniainfo:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2022-09-06T09:25:09Zoai:ojs.revistas.rcaap.pt:article/17062Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T15:31:13.876174Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse |
dc.title.none.fl_str_mv |
Potato cyst nematodes’ routine analyses: morphology and/or PCR? Análises de rotina para detecção de nemátodes de quisto da batateira: morfologia e/ou PCR? |
title |
Potato cyst nematodes’ routine analyses: morphology and/or PCR? |
spellingShingle |
Potato cyst nematodes’ routine analyses: morphology and/or PCR? Inácio, Maria L. Geral |
title_short |
Potato cyst nematodes’ routine analyses: morphology and/or PCR? |
title_full |
Potato cyst nematodes’ routine analyses: morphology and/or PCR? |
title_fullStr |
Potato cyst nematodes’ routine analyses: morphology and/or PCR? |
title_full_unstemmed |
Potato cyst nematodes’ routine analyses: morphology and/or PCR? |
title_sort |
Potato cyst nematodes’ routine analyses: morphology and/or PCR? |
author |
Inácio, Maria L. |
author_facet |
Inácio, Maria L. Camacho, Maria J. Rusinque, Leidy Nóbrega, Filomena Andrade, Eugénia |
author_role |
author |
author2 |
Camacho, Maria J. Rusinque, Leidy Nóbrega, Filomena Andrade, Eugénia |
author2_role |
author author author author |
dc.contributor.author.fl_str_mv |
Inácio, Maria L. Camacho, Maria J. Rusinque, Leidy Nóbrega, Filomena Andrade, Eugénia |
dc.subject.por.fl_str_mv |
Geral |
topic |
Geral |
description |
Potato cyst nematodes (PCN), Globodera rostochiensis and G. pallida, are a serious threat to potato crops worldwide. Due to the risk these two species pose, a national survey was implemented starting in 2010 aiming to know the presence and distribution of these quarantine nematodes in Portugal. This fact has led to an increasing demand to accurately identify the PCN species present in the fields. Usually, the identification is based on morphology followed by molecular analysis. Considering there is at least one laboratory in the EU certified for morphological identification of PCN, the aim of this study was to look into the possibility of using only morphological diagnostic characters for routine purposes. Forty cysts of Globodera were used, for morphological and molecular analyses. Morphological analysis allowed the identification of 23 cysts as G. rostochiensis and 17 cysts as G. pallida and the molecular results revealed that 9 cysts were G. rostochiensis and 31 cysts were G. pallida. Thus, morphological and molecular analyses matched 65%, concluding that in our routine analyses only an initial morphological approach followed by molecular methods enables a reliable identification of PCN species. So, it is recommended to combine both methods. PCR can be ruled out only if the purpose is to detect Globodera nematodes, which is the case of the seed potato fields where the presence of round-cyst nematodes will interdict the seed production. |
publishDate |
2019 |
dc.date.none.fl_str_mv |
2019-03-10T00:00:00Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
https://doi.org/10.19084/rca.17062 |
url |
https://doi.org/10.19084/rca.17062 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
2183-041X 0871-018X |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.publisher.none.fl_str_mv |
Sociedade de Ciências Agrárias de Portugal |
publisher.none.fl_str_mv |
Sociedade de Ciências Agrárias de Portugal |
dc.source.none.fl_str_mv |
reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação instacron:RCAAP |
instname_str |
Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
instacron_str |
RCAAP |
institution |
RCAAP |
reponame_str |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
collection |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
repository.name.fl_str_mv |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
repository.mail.fl_str_mv |
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1799130177801814016 |