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Registro Completo |
Biblioteca(s): |
Embrapa Mandioca e Fruticultura. |
Data corrente: |
31/10/2011 |
Data da última atualização: |
26/05/2023 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Autoria: |
GONÇALVES, F. P.; LOURENÇO, S. A.; STUCHI, E. S.; HAU, B.; AMORIM, L. |
Afiliação: |
FABRÍCIO PACKER GONÇALVES, ESALQ; SILVIA AFONSECA LOURENÇO, ESALQ; EDUARDO SANCHES STUCHI, CNPMF; BERNHARD HAU, Hannover University; LILIAN AMORIM, ESALQ. |
Título: |
Comparative analysis for quantification of citrus variegated chlorosis in the field. |
Ano de publicação: |
2011 |
Fonte/Imprenta: |
Scientia Agricola, Piracicaba, Braz., v. 68, n. 5, p. 562-565, September/October 2011. |
ISSN: |
0103-9016 |
Idioma: |
Inglês |
Conteúdo: |
Citrus Variegated Chlorosis (CVC) caused by Xylella fastidiosa is one of the most important diseases for Brazilian citriculture. The CVC is a vascular disease with a long incubation period and symptoms similar to other disorders, and this factors difficult the CVC quantification in the field. Two methods of CVC assessment were compared in this study. The first method was based on a descriptive rating scale with four ratings, commonly used for the disease quantification. The second one was based on the incidence of symptomatic branches. The quantification of CVC through these two methods was carried out in a 10-year-old 'Natal' sweet orange orchard. The descriptive scale considered the symptoms of the entire plant. The disease incidence was evaluated in 36 branches in each plant. The assessments were conducted by three raters in 144 plants in July 2006 and July 2007 as well as in March and November 2008. The descriptive scale did not allow an accurate assessment and resulted in a moderate strength of agreement among the raters. On the other hand, the incidence quantification of CVC through the symptomatic branches showed high repeatability among the raters. We suggest the use of incidence of symptomatic branches as variable for CVC quantification. |
Palavras-Chave: |
CVC. |
Thesagro: |
Doença de Planta. |
Categoria do assunto: |
O Insetos e Entomologia |
Marc: |
LEADER 01881naa a2200205 a 4500 001 1904478 005 2023-05-26 008 2011 bl uuuu u00u1 u #d 022 $a0103-9016 100 1 $aGONÇALVES, F. P. 245 $aComparative analysis for quantification of citrus variegated chlorosis in the field.$h[electronic resource] 260 $c2011 520 $aCitrus Variegated Chlorosis (CVC) caused by Xylella fastidiosa is one of the most important diseases for Brazilian citriculture. The CVC is a vascular disease with a long incubation period and symptoms similar to other disorders, and this factors difficult the CVC quantification in the field. Two methods of CVC assessment were compared in this study. The first method was based on a descriptive rating scale with four ratings, commonly used for the disease quantification. The second one was based on the incidence of symptomatic branches. The quantification of CVC through these two methods was carried out in a 10-year-old 'Natal' sweet orange orchard. The descriptive scale considered the symptoms of the entire plant. The disease incidence was evaluated in 36 branches in each plant. The assessments were conducted by three raters in 144 plants in July 2006 and July 2007 as well as in March and November 2008. The descriptive scale did not allow an accurate assessment and resulted in a moderate strength of agreement among the raters. On the other hand, the incidence quantification of CVC through the symptomatic branches showed high repeatability among the raters. We suggest the use of incidence of symptomatic branches as variable for CVC quantification. 650 $aDoença de Planta 653 $aCVC 700 1 $aLOURENÇO, S. A. 700 1 $aSTUCHI, E. S. 700 1 $aHAU, B. 700 1 $aAMORIM, L. 773 $tScientia Agricola, Piracicaba, Braz.$gv. 68, n. 5, p. 562-565, September/October 2011.
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Embrapa Mandioca e Fruticultura (CNPMF) |
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Biblioteca(s): |
Embrapa Meio Ambiente. |
Data corrente: |
03/01/2019 |
Data da última atualização: |
03/01/2019 |
Tipo da produção científica: |
Artigo em Anais de Congresso |
Autoria: |
MENDES, R. |
Afiliação: |
RODRIGO MENDES, CNPMA. |
Título: |
Rhizosphere interactions for disease suppression and biocontrol. |
Ano de publicação: |
2018 |
Fonte/Imprenta: |
In: AUSTRALASIAN SOILBORNE DISEASES SYMPOSIUM, 10., 2018, Adelaide. Proceedings... Adelaide: National Wine Centre of Australia, 2018. |
Páginas: |
2 p. |
Idioma: |
Inglês |
Conteúdo: |
Microbial communities play a pivotal role in the functioning of superior organisms by influencing their physiology and development (1). While many members of the rhizosphere microbiome are beneficial to plant growth, also plant pathogenic microorganisms colonize the rhizosphere striving to break through the protective microbial shield and to overcome the innate plant defense mechanisms in order to cause disease (2). To infect root tissue, pathogens have to compete with members of the rhizosphere microbiome for available nutrients and microsites. In disease-suppressive soils, pathogens are strongly restricted in growth by the activities of specific rhizosphere microorganisms (3). Using metagenomics and metatranscriptomics studies we postulate that the invading pathogen induces, directly or via the plant, stress responses in the rhizobacterial community that lead to shifts in microbiome composition and to activation of antagonistic traits that restrict pathogen infection. Therefore, upon attack by a fungal root pathogen, plants can exploit microbial consortia from soil for protection against infections (4). In this context, we hypothesized that breeding towards resistance against soilborne pathogens influences the assembly of microbial communities and the abundance of specific functional traits associated with protection provided by the rhizosphere microbiome (5). Here, we will discuss recent discoveries on rhizosphere interactions and soilborne pathogens aiming to elucidate the role of the rhizosphere microbiome in reducing disease impacts. MenosMicrobial communities play a pivotal role in the functioning of superior organisms by influencing their physiology and development (1). While many members of the rhizosphere microbiome are beneficial to plant growth, also plant pathogenic microorganisms colonize the rhizosphere striving to break through the protective microbial shield and to overcome the innate plant defense mechanisms in order to cause disease (2). To infect root tissue, pathogens have to compete with members of the rhizosphere microbiome for available nutrients and microsites. In disease-suppressive soils, pathogens are strongly restricted in growth by the activities of specific rhizosphere microorganisms (3). Using metagenomics and metatranscriptomics studies we postulate that the invading pathogen induces, directly or via the plant, stress responses in the rhizobacterial community that lead to shifts in microbiome composition and to activation of antagonistic traits that restrict pathogen infection. Therefore, upon attack by a fungal root pathogen, plants can exploit microbial consortia from soil for protection against infections (4). In this context, we hypothesized that breeding towards resistance against soilborne pathogens influences the assembly of microbial communities and the abundance of specific functional traits associated with protection provided by the rhizosphere microbiome (5). Here, we will discuss recent discoveries on rhizosphere interactions and soilborne pathogens aiming to elucidate t... Mostrar Tudo |
Thesagro: |
Controle biológico; Doença de planta; Fauna microbiana; Rizosfera. |
Thesaurus NAL: |
Biological control; Microbial communities; Suppressive soils. |
Categoria do assunto: |
S Ciências Biológicas |
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/189665/1/2018AA09.pdf
|
Marc: |
LEADER 02241nam a2200205 a 4500 001 2102901 005 2019-01-03 008 2018 bl uuuu u00u1 u #d 100 1 $aMENDES, R. 245 $aRhizosphere interactions for disease suppression and biocontrol.$h[electronic resource] 260 $aIn: AUSTRALASIAN SOILBORNE DISEASES SYMPOSIUM, 10., 2018, Adelaide. Proceedings... Adelaide: National Wine Centre of Australia$c2018 300 $a2 p. 520 $aMicrobial communities play a pivotal role in the functioning of superior organisms by influencing their physiology and development (1). While many members of the rhizosphere microbiome are beneficial to plant growth, also plant pathogenic microorganisms colonize the rhizosphere striving to break through the protective microbial shield and to overcome the innate plant defense mechanisms in order to cause disease (2). To infect root tissue, pathogens have to compete with members of the rhizosphere microbiome for available nutrients and microsites. In disease-suppressive soils, pathogens are strongly restricted in growth by the activities of specific rhizosphere microorganisms (3). Using metagenomics and metatranscriptomics studies we postulate that the invading pathogen induces, directly or via the plant, stress responses in the rhizobacterial community that lead to shifts in microbiome composition and to activation of antagonistic traits that restrict pathogen infection. Therefore, upon attack by a fungal root pathogen, plants can exploit microbial consortia from soil for protection against infections (4). In this context, we hypothesized that breeding towards resistance against soilborne pathogens influences the assembly of microbial communities and the abundance of specific functional traits associated with protection provided by the rhizosphere microbiome (5). Here, we will discuss recent discoveries on rhizosphere interactions and soilborne pathogens aiming to elucidate the role of the rhizosphere microbiome in reducing disease impacts. 650 $aBiological control 650 $aMicrobial communities 650 $aSuppressive soils 650 $aControle biológico 650 $aDoença de planta 650 $aFauna microbiana 650 $aRizosfera
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