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Registro Completo |
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Biblioteca(s): |
Embrapa Semiárido. |
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Data corrente: |
29/11/2019 |
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Data da última atualização: |
29/11/2019 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
FERREIRA, M. A. S. V.; BONNEAU, S.; BRIAND, M.; CESBRON, S.; PORTIER, P.; DARRASSE, A.; GAMA, M. A. S.; BARBOSA, M. A. G.; MARIANO, R. de L. R.; SOUZA, E. B.; JACQUES, M. A. |
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Afiliação: |
Marisa A. S. V. Ferreira; Sophie Bonneau; Martial Briand; Sophie Cesbron; Perrine Portier; Armelle Darrasse; Marco A. S. Gama; MARIA ANGELICA GUIMARAES BARBOSA, CPATSA; Rosa de L. R. Mariano; Elineide B. Souza; Marie-Agnès Jacques. |
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Título: |
Xanthomonas citri pv. viticola affecting grapevine in Brazil: emergence of a successful monomorphic pathogen. |
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Ano de publicação: |
2019 |
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Fonte/Imprenta: |
Frontiers in Plant Science, v. 10, article 489, apr. 2019. |
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DOI: |
10.3389/fpls.2019.00489 |
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Idioma: |
Inglês |
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Conteúdo: |
The pathovar viticola of Xanthomonas citri causes bacterial canker of grapevine. This disease was first recorded in India in 1972, and later in Brazil in 1998, where its distribution is currently restricted to the northeastern region. A multilocus sequence analysis (MLSA) based on seven housekeeping genes and a multilocus variable number of tandem repeat analysis (MLVA) with eight loci were performed in order to assess the genetic relatedness among strains from India and Brazil. Strains isolated in India from three related pathovars affecting Vitaceae species and pathogenic strains isolated from Amaranthus sp. found in bacterial canker-infected vineyards in Brazil were also included. MLSA revealed lack of diversity in all seven genes and grouped grapevine and Amaranthus strains in a monophyletic group in X. citri. The VNTR (variable number of tandem repeat) typing scheme conducted on 107 strains detected 101 haplotypes. The total number of alleles per locus ranged from 5 to 12. A minimum spanning tree (MST) showed that Brazilian strains were clearly separated from Indian strains, which showed unique alleles at three loci. The two strains isolated from symptomatic Amaranthus sp. presented unique alleles at two loci. STRUCTURE analyses revealed three groups congruent with MST and a fourth group with strains from India and Brazil. Admixture among populations were observed in all groups. MST, STRUCTURE and e-BURST analyses showed that the strains collected in 1998 belong to two distinct groups, with predicted founder genotypes from two different vineyards in the same region. This suggest that one introduction of grape planting materials contaminated with genetically distinct strains took place, which was followed by pathogen adaptation. Genome sequencing of one Brazilian strain confirmed typical attributes of pathogenic xanthomonads and allowed the design of a complementary VNTR typing cheme dedicated to X. citri pv. viticola that will allow further epidemiological survey of this genetically monomorphic pathovar. MenosThe pathovar viticola of Xanthomonas citri causes bacterial canker of grapevine. This disease was first recorded in India in 1972, and later in Brazil in 1998, where its distribution is currently restricted to the northeastern region. A multilocus sequence analysis (MLSA) based on seven housekeeping genes and a multilocus variable number of tandem repeat analysis (MLVA) with eight loci were performed in order to assess the genetic relatedness among strains from India and Brazil. Strains isolated in India from three related pathovars affecting Vitaceae species and pathogenic strains isolated from Amaranthus sp. found in bacterial canker-infected vineyards in Brazil were also included. MLSA revealed lack of diversity in all seven genes and grouped grapevine and Amaranthus strains in a monophyletic group in X. citri. The VNTR (variable number of tandem repeat) typing scheme conducted on 107 strains detected 101 haplotypes. The total number of alleles per locus ranged from 5 to 12. A minimum spanning tree (MST) showed that Brazilian strains were clearly separated from Indian strains, which showed unique alleles at three loci. The two strains isolated from symptomatic Amaranthus sp. presented unique alleles at two loci. STRUCTURE analyses revealed three groups congruent with MST and a fourth group with strains from India and Brazil. Admixture among populations were observed in all groups. MST, STRUCTURE and e-BURST analyses showed that the strains collected in 1998 belong to two ... Mostrar Tudo |
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Palavras-Chave: |
MLSA; MLVA; Pathovar viticola; Videira. |
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Thesagro: |
Cancro Bacteriano; Doença; Patógeno; Uva; Vitis Vinifera; Xanthomonas Citri. |
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Thesaurus Nal: |
Bacterial canker; Disease and pest management; Disease control; Grapes. |
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Categoria do assunto: |
H Saúde e Patologia |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/205811/1/Xanthomonas-citri-pv.-viticola-Affecting-Grapevine-in-Brazil-2019.pdf
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Marc: |
LEADER 03214naa a2200421 a 4500
001 2115484
005 2019-11-29
008 2019 bl uuuu u00u1 u #d
024 7 $a10.3389/fpls.2019.00489$2DOI
100 1 $aFERREIRA, M. A. S. V.
245 $aXanthomonas citri pv. viticola affecting grapevine in Brazil$bemergence of a successful monomorphic pathogen.$h[electronic resource]
260 $c2019
520 $aThe pathovar viticola of Xanthomonas citri causes bacterial canker of grapevine. This disease was first recorded in India in 1972, and later in Brazil in 1998, where its distribution is currently restricted to the northeastern region. A multilocus sequence analysis (MLSA) based on seven housekeeping genes and a multilocus variable number of tandem repeat analysis (MLVA) with eight loci were performed in order to assess the genetic relatedness among strains from India and Brazil. Strains isolated in India from three related pathovars affecting Vitaceae species and pathogenic strains isolated from Amaranthus sp. found in bacterial canker-infected vineyards in Brazil were also included. MLSA revealed lack of diversity in all seven genes and grouped grapevine and Amaranthus strains in a monophyletic group in X. citri. The VNTR (variable number of tandem repeat) typing scheme conducted on 107 strains detected 101 haplotypes. The total number of alleles per locus ranged from 5 to 12. A minimum spanning tree (MST) showed that Brazilian strains were clearly separated from Indian strains, which showed unique alleles at three loci. The two strains isolated from symptomatic Amaranthus sp. presented unique alleles at two loci. STRUCTURE analyses revealed three groups congruent with MST and a fourth group with strains from India and Brazil. Admixture among populations were observed in all groups. MST, STRUCTURE and e-BURST analyses showed that the strains collected in 1998 belong to two distinct groups, with predicted founder genotypes from two different vineyards in the same region. This suggest that one introduction of grape planting materials contaminated with genetically distinct strains took place, which was followed by pathogen adaptation. Genome sequencing of one Brazilian strain confirmed typical attributes of pathogenic xanthomonads and allowed the design of a complementary VNTR typing cheme dedicated to X. citri pv. viticola that will allow further epidemiological survey of this genetically monomorphic pathovar.
650 $aBacterial canker
650 $aDisease and pest management
650 $aDisease control
650 $aGrapes
650 $aCancro Bacteriano
650 $aDoença
650 $aPatógeno
650 $aUva
650 $aVitis Vinifera
650 $aXanthomonas Citri
653 $aMLSA
653 $aMLVA
653 $aPathovar viticola
653 $aVideira
700 1 $aBONNEAU, S.
700 1 $aBRIAND, M.
700 1 $aCESBRON, S.
700 1 $aPORTIER, P.
700 1 $aDARRASSE, A.
700 1 $aGAMA, M. A. S.
700 1 $aBARBOSA, M. A. G.
700 1 $aMARIANO, R. de L. R.
700 1 $aSOUZA, E. B.
700 1 $aJACQUES, M. A.
773 $tFrontiers in Plant Science$gv. 10, article 489, apr. 2019.
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Registro original: |
Embrapa Semiárido (CPATSA) |
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 | Acesso ao texto completo restrito à biblioteca da Embrapa Mandioca e Fruticultura. Para informações adicionais entre em contato com cnpmf.biblioteca@embrapa.br. |
Registro Completo
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Biblioteca(s): |
Embrapa Mandioca e Fruticultura. |
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Data corrente: |
29/08/2016 |
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Data da última atualização: |
24/02/2017 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
A - 2 |
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Autoria: |
GONÇALVES, L. P.; ALVES, T. F. O.; MARTINS, C. P. S.; SOUSA, A. O. de; SANTOS, I. C. dos; PIROVANI, C. P.; ALMEIDA, A-A. F.; COELHO FILHO, M. A.; GESTEIRA, A. da S.; SOARES FILHO, W. dos S.; GIRARDI, E. A.; COSTA, M. G. C. |
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Afiliação: |
LUANA P. GONÇALVES, State University of Santa Cruz; TAINA F. O. ALVES, State University of Santa Cruz; CRISTINA P. S. MARTINS, State University of Santa Cruz; AURIZANGELA O. DE SOUSA, State University of Santa Cruz; IVANILDES C. DOS SANTOS, State University of Santa Cruz; CARLOS P. PIROVANI, State University of Santa Cruz; ALEX-ALAN F. ALMEIDA, State University of Santa Cruz; MAURICIO ANTONIO COELHO FILHO, CNPMF; ABELMON DA SILVA GESTEIRA, CNPMF; WALTER DOS SANTOS SOARES FILHO, CNPMF; EDUARDO AUGUSTO GIRARDI, CNPMF; MARCIO G. C. COSTA, State University of Santa Cruz. |
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Título: |
Rootstock-induced physiological and biochemical mechanisms of drought tolerance in sweet orange. |
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Ano de publicação: |
2016 |
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Fonte/Imprenta: |
Acta Physiologiae Plantarum, June, .38- 174, 2016. |
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Série: |
0137-5881 |
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Idioma: |
Inglês |
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Conteúdo: |
The poorly understood physiological and biochemical drought responses induced in sweet orange by citrus rootstocks of contrasting drought tolerance were investigated during a drought/rewatering cycle under controlled conditions. Long-term exposure of the grafted trees to a gradually increasing water deficit and subsequent recovery revealed distinct strategies of drought acclimation that were induced by the different rootstocks. Trees grafted onto the drought-tolerant rootstock ?Cravo? rangpur lime were less water conservative, exhibiting an increased cell-wall elasticity that contributes to turgor maintenance and its related processes of growth and photosynthesis over a wider range of soil?water potentials. On the other hand, the drought-tolerant ?Sunki Tropical? mandarin and drought-sensitive ?Flying Dragon? trifoliate orange rootstocks induced a water conservation strategy by increasing tissue rigidity under drought. ?Sunki Tropical? was also able to induce osmotic adjustment, conferring thereby a more efficient water conservation strategy than ?Flying Dragon? by allowing for turgor maintenance at lower soil?water potentials while attenuating cell dehydration and shrinkage. In contrast to ?Cravo? and ?Sunki Tropical?, trees grafted onto ?Flying Dragon? exhibited a significant photoinhibition of the photosystem II reaction centers, as well as an increased H2O2 production and lipid peroxidation under drought treatment. A significantly higher activity of the antioxidant enzyme GPX was also observed in drought stressed trees grafted onto ?Flying Dragon?. Collectively, these results support the involvement of elastic and osmotic adjustments, as well as the control of oxidative stress, as functional leaf traits associated with the rootstock-induced drought tolerance in sweet orange. MenosThe poorly understood physiological and biochemical drought responses induced in sweet orange by citrus rootstocks of contrasting drought tolerance were investigated during a drought/rewatering cycle under controlled conditions. Long-term exposure of the grafted trees to a gradually increasing water deficit and subsequent recovery revealed distinct strategies of drought acclimation that were induced by the different rootstocks. Trees grafted onto the drought-tolerant rootstock ?Cravo? rangpur lime were less water conservative, exhibiting an increased cell-wall elasticity that contributes to turgor maintenance and its related processes of growth and photosynthesis over a wider range of soil?water potentials. On the other hand, the drought-tolerant ?Sunki Tropical? mandarin and drought-sensitive ?Flying Dragon? trifoliate orange rootstocks induced a water conservation strategy by increasing tissue rigidity under drought. ?Sunki Tropical? was also able to induce osmotic adjustment, conferring thereby a more efficient water conservation strategy than ?Flying Dragon? by allowing for turgor maintenance at lower soil?water potentials while attenuating cell dehydration and shrinkage. In contrast to ?Cravo? and ?Sunki Tropical?, trees grafted onto ?Flying Dragon? exhibited a significant photoinhibition of the photosystem II reaction centers, as well as an increased H2O2 production and lipid peroxidation under drought treatment. A significantly higher activity of the antioxidant enzym... Mostrar Tudo |
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Thesagro: |
Laranja; Porta enxerto. |
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Thesaurus NAL: |
Oranges; Oxidative stress; Rootstocks. |
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Categoria do assunto: |
G Melhoramento Genético |
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Marc: |
LEADER 02741naa a2200325 a 4500
001 2051888
005 2017-02-24
008 2016 bl uuuu u00u1 u #d
100 1 $aGONÇALVES, L. P.
245 $aRootstock-induced physiological and biochemical mechanisms of drought tolerance in sweet orange.$h[electronic resource]
260 $c2016
490 $a0137-5881
520 $aThe poorly understood physiological and biochemical drought responses induced in sweet orange by citrus rootstocks of contrasting drought tolerance were investigated during a drought/rewatering cycle under controlled conditions. Long-term exposure of the grafted trees to a gradually increasing water deficit and subsequent recovery revealed distinct strategies of drought acclimation that were induced by the different rootstocks. Trees grafted onto the drought-tolerant rootstock ?Cravo? rangpur lime were less water conservative, exhibiting an increased cell-wall elasticity that contributes to turgor maintenance and its related processes of growth and photosynthesis over a wider range of soil?water potentials. On the other hand, the drought-tolerant ?Sunki Tropical? mandarin and drought-sensitive ?Flying Dragon? trifoliate orange rootstocks induced a water conservation strategy by increasing tissue rigidity under drought. ?Sunki Tropical? was also able to induce osmotic adjustment, conferring thereby a more efficient water conservation strategy than ?Flying Dragon? by allowing for turgor maintenance at lower soil?water potentials while attenuating cell dehydration and shrinkage. In contrast to ?Cravo? and ?Sunki Tropical?, trees grafted onto ?Flying Dragon? exhibited a significant photoinhibition of the photosystem II reaction centers, as well as an increased H2O2 production and lipid peroxidation under drought treatment. A significantly higher activity of the antioxidant enzyme GPX was also observed in drought stressed trees grafted onto ?Flying Dragon?. Collectively, these results support the involvement of elastic and osmotic adjustments, as well as the control of oxidative stress, as functional leaf traits associated with the rootstock-induced drought tolerance in sweet orange.
650 $aOranges
650 $aOxidative stress
650 $aRootstocks
650 $aLaranja
650 $aPorta enxerto
700 1 $aALVES, T. F. O.
700 1 $aMARTINS, C. P. S.
700 1 $aSOUSA, A. O. de
700 1 $aSANTOS, I. C. dos
700 1 $aPIROVANI, C. P.
700 1 $aALMEIDA, A-A. F.
700 1 $aCOELHO FILHO, M. A.
700 1 $aGESTEIRA, A. da S.
700 1 $aSOARES FILHO, W. dos S.
700 1 $aGIRARDI, E. A.
700 1 $aCOSTA, M. G. C.
773 $tActa Physiologiae Plantarum, June, .38- 174, 2016.
Download
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