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Registro Completo |
Biblioteca(s): |
Embrapa Meio Ambiente. |
Data corrente: |
10/12/2019 |
Data da última atualização: |
10/12/2019 |
Tipo da produção científica: |
Resumo em Anais de Congresso |
Autoria: |
MENDES, R. |
Afiliação: |
RODRIGO MENDES, CNPMA. |
Título: |
The protective action of the rhizosphere microbiome against soilborne diseases. |
Ano de publicação: |
2019 |
Fonte/Imprenta: |
In: CONGRESSO BRASILEIRO DE FITOPATOLOGIA, 51., 2019, Recife. Os avanços da fitopatologia na era genômica: anais. Recife: SBF, UFRPE, 2019. |
Páginas: |
p. 841. |
Idioma: |
Português |
Conteúdo: |
The rhizosphere microbiome plays a pivotal role in the functioning of plants by influencing their physiology and development. 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. The rhizosphere is the infection court where soilborne pathogens establish a parasitic relationship with the plant. 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. We postulate that the invading pathogenic fungus 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. Although the importance of the rhizosphere microbiome for plant growth has been widely recognized, for the vast majority of rhizosphere microorganisms no knowledge exists. To enhance plant growth and health, it is essential to know which microorganism is present in the rhizosphere microbiome and what they are doing. We will discuss the main functions of rhizosphere microorganisms and how they impact on health and disease. We discuss the mechanisms involved in the multitrophic interactions and chemical dialogues that occur in the rhizosphere. Finally, we highlight several strategies to redirect or reshape the rhizosphere microbiome in favor of microorganisms that are beneficial to plant growth and health. MenosThe rhizosphere microbiome plays a pivotal role in the functioning of plants by influencing their physiology and development. 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. The rhizosphere is the infection court where soilborne pathogens establish a parasitic relationship with the plant. 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. We postulate that the invading pathogenic fungus 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. Although the importance of the rhizosphere microbiome for plant growth has been widely recognized, for the vast majority of rhizosphere microorganisms no knowledge exists. To enhance plant growth and health, it is essential to know which microorganism is present in the rhizosphere microbiome and what they are doing. We will discuss the main functions of rhizosphere microorganisms and how they impact on health and disease. We discuss the mechanisms involv... Mostrar Tudo |
Thesagro: |
Rizosfera. |
Thesaurus Nal: |
Microbiome. |
Categoria do assunto: |
H Saúde e Patologia |
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/206656/1/RA-MendesR-51CBFitopatologia-2019-p841palestra.pdf
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Marc: |
LEADER 02273nam a2200145 a 4500 001 2116537 005 2019-12-10 008 2019 bl uuuu u00u1 u #d 100 1 $aMENDES, R. 245 $aThe protective action of the rhizosphere microbiome against soilborne diseases.$h[electronic resource] 260 $aIn: CONGRESSO BRASILEIRO DE FITOPATOLOGIA, 51., 2019, Recife. Os avanços da fitopatologia na era genômica: anais. Recife: SBF, UFRPE$c2019 300 $ap. 841. 520 $aThe rhizosphere microbiome plays a pivotal role in the functioning of plants by influencing their physiology and development. 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. The rhizosphere is the infection court where soilborne pathogens establish a parasitic relationship with the plant. 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. We postulate that the invading pathogenic fungus 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. Although the importance of the rhizosphere microbiome for plant growth has been widely recognized, for the vast majority of rhizosphere microorganisms no knowledge exists. To enhance plant growth and health, it is essential to know which microorganism is present in the rhizosphere microbiome and what they are doing. We will discuss the main functions of rhizosphere microorganisms and how they impact on health and disease. We discuss the mechanisms involved in the multitrophic interactions and chemical dialogues that occur in the rhizosphere. Finally, we highlight several strategies to redirect or reshape the rhizosphere microbiome in favor of microorganisms that are beneficial to plant growth and health. 650 $aMicrobiome 650 $aRizosfera
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Registro original: |
Embrapa Meio Ambiente (CNPMA) |
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Biblioteca(s): |
Embrapa Acre. |
Data corrente: |
31/08/2020 |
Data da última atualização: |
28/06/2021 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Circulação/Nível: |
A - 2 |
Autoria: |
ANDRADE, J. P. N.; GOMEZ-LÉON, V. E.; ANDRADE, F. S.; CARVALHO, B. P.; LACOUTH, K. L.; GARCIA, F. Z.; JACOB, J. C. F.; SALES, J. N. S.; WILTBANK, M. C.; MELLO, M. R. B. |
Afiliação: |
Joao P. N. Andrade, Universidade Federal Rural do Rio de Janeiro / University of Wisconsin-Madison; Victor E. Gomez-Leon, University of Wisconsin-Madison; Fabiana S. Andrade, Universidade Federal Rural do Rio de Janeiro / University of Wisconsin-Madison; BRUNO PENA CARVALHO, CPAF-AC; Karen L. Lacouth, Universidade Federal do Acre; Felipe Z. Garcia, Universidade Federal Rural do Rio de Janeiro; Júlio C. F. Jacob, Universidade Federal Rural do Rio de Janeiro; José N. S. Sales, Universidade Federal de Lavras; Milo C. Wiltbank, University of Wisconsin-Madison; Marco R.B. Mello, Universidade Federal Rural do Rio de Janeiro. |
Título: |
Development of a novel 21-day reinsemination program, ReBreed21, in Bos indicus heifers. |
Ano de publicação: |
2020 |
Fonte/Imprenta: |
Theriogenology, v. 115, p. 125-131, Oct. 2020. |
ISSN: |
0093-691X |
DOI: |
https://doi.org/10.1016/j.theriogenology.2020.04.021 |
Idioma: |
Inglês |
Conteúdo: |
The aim was to develop a program for resynchronization of ovulation (ReBreed21) that allowed reinsemination of non-pregnant Bos indicus heifers every 21 d using timed AI (TAI) without the need for detection of estrus. The Rebreed21 program begins 12 d after previous TAI (Day 0) by inserting an intravaginal P4 implant (Day 12) that is removed 7 d later (Day 19) combined with treatment with 300 IU of eCG. On Day 21, early pregnancy diagnosis (Doppler PD) is performed based on CL vascularity. Nonpregnant (NP) heifers immediately received AI combined with 100 mg of GnRH. The program is replicated 12 d after second TAI to produce a breeding season (BS) of 42 d with 3 potential TAIs. Two experiments were conducted as a proof of concept for this rapid rebreeding program. In Experiment 1, 76 heifers were enrolled in ReBreed21, as explained above. In Experiment 2, 300 Nellore heifers were synchronized for 1st TAI and randomly assigned to one of two groups: ReBreed21 (n = 147) or another early resynchronization procedure, Resynch14 (n = 153) with P4 implant inserted 14 d after previous TAI plus 50 mg of long-acting injectable P4; 8 d later P4 implant removed (Day 22) and early Doppler PD performed; NP heifers received 150 mg of cloprostenol, 0.5 mg of ECP, and 300 IU of eCG with TAI on Day 24. In both experiments, the largest follicle (LF) was measured at each Resynch TAI. Ultrasound was later used to confirm the early Doppler PD and to determine ovulation (OV) to Resynch at 12 d after TAI in ReBreed21 (Day 33 of pregnancy) and 14 d after TAI in Resynch14 (Day 38 of pregnancy). Final PD was performed 40 d after 3rd TAI. Results for Experiment 1 were: diameter of LF 11.8 ± 0.23 mm; 88.9% OV; 20.5% false positives; 38.1% P/AI at 1st TAI; 44.4% overall P/AI for ReBreed21 TAIs; 72.3% total pregnant at end of BS. In experiment 2, Rebreed21 vs. Resynch14 were different for: diameter of LF (10.9 ± 0.17 vs. 10.0 ± 0.17 mm, P = 0.0003), heifers with LF < 8.5 mm (10.2 vs. 26.4%, P = 0.04), or LF 11 mm (50.0 vs. 37.2%, P = 0.001), and P/AI at first TAI (29.3% [43/147] vs. 20.3% [31/153], P = 0.074) but similar for OV (overall 86.8% [239/275], P = 0.82), false positives (P = 0.52) overall P/AI for Resynch TAIs (33.6 vs. 28.8%, P = 0.4), and total pregnant at end of BS (58.5% [86/147] vs. 55.6% [85/153], P = 0.64). In addition, median time to pregnancy was 9 d earlier (P = 0.0007) for ReBreed21 than Resynch14. Thus, ReBreed21 is a novel protocol that allows earlier reinseminations than Resynch14 but with similar fertility. MenosThe aim was to develop a program for resynchronization of ovulation (ReBreed21) that allowed reinsemination of non-pregnant Bos indicus heifers every 21 d using timed AI (TAI) without the need for detection of estrus. The Rebreed21 program begins 12 d after previous TAI (Day 0) by inserting an intravaginal P4 implant (Day 12) that is removed 7 d later (Day 19) combined with treatment with 300 IU of eCG. On Day 21, early pregnancy diagnosis (Doppler PD) is performed based on CL vascularity. Nonpregnant (NP) heifers immediately received AI combined with 100 mg of GnRH. The program is replicated 12 d after second TAI to produce a breeding season (BS) of 42 d with 3 potential TAIs. Two experiments were conducted as a proof of concept for this rapid rebreeding program. In Experiment 1, 76 heifers were enrolled in ReBreed21, as explained above. In Experiment 2, 300 Nellore heifers were synchronized for 1st TAI and randomly assigned to one of two groups: ReBreed21 (n = 147) or another early resynchronization procedure, Resynch14 (n = 153) with P4 implant inserted 14 d after previous TAI plus 50 mg of long-acting injectable P4; 8 d later P4 implant removed (Day 22) and early Doppler PD performed; NP heifers received 150 mg of cloprostenol, 0.5 mg of ECP, and 300 IU of eCG with TAI on Day 24. In both experiments, the largest follicle (LF) was measured at each Resynch TAI. Ultrasound was later used to confirm the early Doppler PD and to determine ovulation (OV) to Resynch at 12 d afte... Mostrar Tudo |
Palavras-Chave: |
Cruce de animales; Inseminación artificial; Métodos de mejoramiento genético; Ovulación; Razas zebú; ReBreed21; Ressincronização; Resynchronization; Vaquilla. |
Thesagro: |
Bos Indicus; Gado Nelore; Gado Zebu; Inseminação Artificial; Novilho; Ovulação; Reprodução Animal. |
Thesaurus NAL: |
Animal breeding; Artificial insemination; Breeding methods; Heifers; Nellore; Ovulation; Zebu breeds. |
Categoria do assunto: |
L Ciência Animal e Produtos de Origem Animal |
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/215666/1/27022.pdf
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Marc: |
LEADER 04040naa a2200529 a 4500 001 2124659 005 2021-06-28 008 2020 bl uuuu u00u1 u #d 022 $a0093-691X 024 7 $ahttps://doi.org/10.1016/j.theriogenology.2020.04.021$2DOI 100 1 $aANDRADE, J. P. N. 245 $aDevelopment of a novel 21-day reinsemination program, ReBreed21, in Bos indicus heifers.$h[electronic resource] 260 $c2020 520 $aThe aim was to develop a program for resynchronization of ovulation (ReBreed21) that allowed reinsemination of non-pregnant Bos indicus heifers every 21 d using timed AI (TAI) without the need for detection of estrus. The Rebreed21 program begins 12 d after previous TAI (Day 0) by inserting an intravaginal P4 implant (Day 12) that is removed 7 d later (Day 19) combined with treatment with 300 IU of eCG. On Day 21, early pregnancy diagnosis (Doppler PD) is performed based on CL vascularity. Nonpregnant (NP) heifers immediately received AI combined with 100 mg of GnRH. The program is replicated 12 d after second TAI to produce a breeding season (BS) of 42 d with 3 potential TAIs. Two experiments were conducted as a proof of concept for this rapid rebreeding program. In Experiment 1, 76 heifers were enrolled in ReBreed21, as explained above. In Experiment 2, 300 Nellore heifers were synchronized for 1st TAI and randomly assigned to one of two groups: ReBreed21 (n = 147) or another early resynchronization procedure, Resynch14 (n = 153) with P4 implant inserted 14 d after previous TAI plus 50 mg of long-acting injectable P4; 8 d later P4 implant removed (Day 22) and early Doppler PD performed; NP heifers received 150 mg of cloprostenol, 0.5 mg of ECP, and 300 IU of eCG with TAI on Day 24. In both experiments, the largest follicle (LF) was measured at each Resynch TAI. Ultrasound was later used to confirm the early Doppler PD and to determine ovulation (OV) to Resynch at 12 d after TAI in ReBreed21 (Day 33 of pregnancy) and 14 d after TAI in Resynch14 (Day 38 of pregnancy). Final PD was performed 40 d after 3rd TAI. Results for Experiment 1 were: diameter of LF 11.8 ± 0.23 mm; 88.9% OV; 20.5% false positives; 38.1% P/AI at 1st TAI; 44.4% overall P/AI for ReBreed21 TAIs; 72.3% total pregnant at end of BS. In experiment 2, Rebreed21 vs. Resynch14 were different for: diameter of LF (10.9 ± 0.17 vs. 10.0 ± 0.17 mm, P = 0.0003), heifers with LF < 8.5 mm (10.2 vs. 26.4%, P = 0.04), or LF 11 mm (50.0 vs. 37.2%, P = 0.001), and P/AI at first TAI (29.3% [43/147] vs. 20.3% [31/153], P = 0.074) but similar for OV (overall 86.8% [239/275], P = 0.82), false positives (P = 0.52) overall P/AI for Resynch TAIs (33.6 vs. 28.8%, P = 0.4), and total pregnant at end of BS (58.5% [86/147] vs. 55.6% [85/153], P = 0.64). In addition, median time to pregnancy was 9 d earlier (P = 0.0007) for ReBreed21 than Resynch14. Thus, ReBreed21 is a novel protocol that allows earlier reinseminations than Resynch14 but with similar fertility. 650 $aAnimal breeding 650 $aArtificial insemination 650 $aBreeding methods 650 $aHeifers 650 $aNellore 650 $aOvulation 650 $aZebu breeds 650 $aBos Indicus 650 $aGado Nelore 650 $aGado Zebu 650 $aInseminação Artificial 650 $aNovilho 650 $aOvulação 650 $aReprodução Animal 653 $aCruce de animales 653 $aInseminación artificial 653 $aMétodos de mejoramiento genético 653 $aOvulación 653 $aRazas zebú 653 $aReBreed21 653 $aRessincronização 653 $aResynchronization 653 $aVaquilla 700 1 $aGOMEZ-LÉON, V. E. 700 1 $aANDRADE, F. S. 700 1 $aCARVALHO, B. P. 700 1 $aLACOUTH, K. L. 700 1 $aGARCIA, F. Z. 700 1 $aJACOB, J. C. F. 700 1 $aSALES, J. N. S. 700 1 $aWILTBANK, M. C. 700 1 $aMELLO, M. R. B. 773 $tTheriogenology$gv. 115, p. 125-131, Oct. 2020.
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