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Biblioteca(s): |
Embrapa Florestas. |
Data corrente: |
26/01/2010 |
Data da última atualização: |
28/01/2010 |
Autoria: |
VALE, A. T. do; ROCHA, L. R.; MENEZZI, C. H. S. D. |
Título: |
Massa específica básica da madeira de Pinus caribaea var. hondurensis cultivado em cerrado. |
Ano de publicação: |
2009 |
Fonte/Imprenta: |
Scientia Forestalis, São Paulo, n. 84, p. 387-394, dez. 2009. |
Idioma: |
Português |
Palavras-Chave: |
Massa específica; Radial; Variação axial. |
Thesaurus Nal: |
Pinus caribaea var. hondurensis. |
Categoria do assunto: |
-- |
Marc: |
LEADER 00567naa a2200181 a 4500 001 1631161 005 2010-01-28 008 2009 bl uuuu u00u1 u #d 100 1 $aVALE, A. T. do 245 $aMassa específica básica da madeira de Pinus caribaea var. hondurensis cultivado em cerrado. 260 $c2009 650 $aPinus caribaea var. hondurensis 653 $aMassa específica 653 $aRadial 653 $aVariação axial 700 1 $aROCHA, L. R. 700 1 $aMENEZZI, C. H. S. D. 773 $tScientia Forestalis, São Paulo$gn. 84, p. 387-394, dez. 2009.
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Embrapa Florestas (CNPF) |
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Registro Completo
Biblioteca(s): |
Embrapa Meio Ambiente. |
Data corrente: |
11/02/2016 |
Data da última atualização: |
12/02/2016 |
Tipo da produção científica: |
Resumo em Anais de Congresso |
Autoria: |
ROSSMANN, M.; CHIARAMONTE, J. B.; MENDES, R. |
Afiliação: |
M. ROSSMANN; J. B. CHIARAMONTE, ESALQ/USP; RODRIGO MENDES, CNPMA. |
Título: |
Quantification of the mycorrhizal fungal community associated with a modern wheat cultivar (Triticum aestivum) and with a wheat ancestor. |
Ano de publicação: |
2015 |
Fonte/Imprenta: |
In: CONGRESSO BRASILEIRO DE MICROBIOLOGIA, 28., Florianópolis. Anais... Florianópolis: Sociedade Brasileira de Microbiologia, 2015. Ref. 1865-1. |
Idioma: |
Inglês |
Conteúdo: |
Abstract: Plant breeding is an important instrument to improve crop productivity. However, studies have shown that plant breeding, as well as the use of management practices such as tillage and fertilization, influence the plant root microbiome and also may have caused reduction in the genetic diversity of modern cultivars when compared to their ancestors. As the rhizosphere microbiome can profoundly impact plant growth, nutrition and health, we hypothesized that plant breeding can negatively affect the recruitment of beneficial microbes in the rhizosphere and interactions with their favorable microbial partners. A greenhouse experiment was conducted to assess the composition of the rhizosphere mycorrhizal fungi community in wheat (Triticum aestivum) varieties, modern cultivars and wheat ancestors. Plants were grown in forest and agricultural soils, collected in wheat cultivation area in São Paulo, Brazil. The DNA was extracted from rhizospheric soil collected in the flowering stage, and the r RNA 18S gene copy number of mycorrhizal fungi was determined using quantitative real-time PCR (qPCR). The bulk soil presented less mycorrhizal fungi than rhizospheric soil of modern cultivars and more than rhizospheric soil of wheat ancestors indicating that these materials can be more selective in recruiting and structuring the rhizosphere microbiome. Modern cultivars were more intensely colonized by mycorrhizal fungi compared to ancestral genotypes and therefore possibly more dependent on these microorganisms. The results do not evidence that new crop plant genotypes lost their ability to respond to mycorrhizal due to agricultural and breeding practices, and further analyses needs to be performed. MenosAbstract: Plant breeding is an important instrument to improve crop productivity. However, studies have shown that plant breeding, as well as the use of management practices such as tillage and fertilization, influence the plant root microbiome and also may have caused reduction in the genetic diversity of modern cultivars when compared to their ancestors. As the rhizosphere microbiome can profoundly impact plant growth, nutrition and health, we hypothesized that plant breeding can negatively affect the recruitment of beneficial microbes in the rhizosphere and interactions with their favorable microbial partners. A greenhouse experiment was conducted to assess the composition of the rhizosphere mycorrhizal fungi community in wheat (Triticum aestivum) varieties, modern cultivars and wheat ancestors. Plants were grown in forest and agricultural soils, collected in wheat cultivation area in São Paulo, Brazil. The DNA was extracted from rhizospheric soil collected in the flowering stage, and the r RNA 18S gene copy number of mycorrhizal fungi was determined using quantitative real-time PCR (qPCR). The bulk soil presented less mycorrhizal fungi than rhizospheric soil of modern cultivars and more than rhizospheric soil of wheat ancestors indicating that these materials can be more selective in recruiting and structuring the rhizosphere microbiome. Modern cultivars were more intensely colonized by mycorrhizal fungi compared to ancestral genotypes and therefore possibly more depende... Mostrar Tudo |
Palavras-Chave: |
Crop breeding; Mycorrhizal community; Plant-microbe interactions; Rhizosphere microbiome. |
Thesagro: |
Trigo; Triticum Aestivum. |
Categoria do assunto: |
S Ciências Biológicas |
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/138854/1/2015RA-074.pdf
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Marc: |
LEADER 02500nam a2200205 a 4500 001 2036666 005 2016-02-12 008 2015 bl uuuu u00u1 u #d 100 1 $aROSSMANN, M. 245 $aQuantification of the mycorrhizal fungal community associated with a modern wheat cultivar (Triticum aestivum) and with a wheat ancestor.$h[electronic resource] 260 $aIn: CONGRESSO BRASILEIRO DE MICROBIOLOGIA, 28., Florianópolis. Anais... Florianópolis: Sociedade Brasileira de Microbiologia, 2015. Ref. 1865-1.$c1865 520 $aAbstract: Plant breeding is an important instrument to improve crop productivity. However, studies have shown that plant breeding, as well as the use of management practices such as tillage and fertilization, influence the plant root microbiome and also may have caused reduction in the genetic diversity of modern cultivars when compared to their ancestors. As the rhizosphere microbiome can profoundly impact plant growth, nutrition and health, we hypothesized that plant breeding can negatively affect the recruitment of beneficial microbes in the rhizosphere and interactions with their favorable microbial partners. A greenhouse experiment was conducted to assess the composition of the rhizosphere mycorrhizal fungi community in wheat (Triticum aestivum) varieties, modern cultivars and wheat ancestors. Plants were grown in forest and agricultural soils, collected in wheat cultivation area in São Paulo, Brazil. The DNA was extracted from rhizospheric soil collected in the flowering stage, and the r RNA 18S gene copy number of mycorrhizal fungi was determined using quantitative real-time PCR (qPCR). The bulk soil presented less mycorrhizal fungi than rhizospheric soil of modern cultivars and more than rhizospheric soil of wheat ancestors indicating that these materials can be more selective in recruiting and structuring the rhizosphere microbiome. Modern cultivars were more intensely colonized by mycorrhizal fungi compared to ancestral genotypes and therefore possibly more dependent on these microorganisms. The results do not evidence that new crop plant genotypes lost their ability to respond to mycorrhizal due to agricultural and breeding practices, and further analyses needs to be performed. 650 $aTrigo 650 $aTriticum Aestivum 653 $aCrop breeding 653 $aMycorrhizal community 653 $aPlant-microbe interactions 653 $aRhizosphere microbiome 700 1 $aCHIARAMONTE, J. B. 700 1 $aMENDES, R.
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