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Registro Completo |
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Biblioteca(s): |
Embrapa Café; Embrapa Unidades Centrais. |
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Data corrente: |
15/02/2011 |
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Data da última atualização: |
07/07/2011 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
GEROMEL, C.; FERREIRA, L. P.; DAVRIEUX, F.; GUYOT, B.; RIBEYRE, F.; SCHOLZ, M. B. dos S.; PEREIRA, L. F. P.; VAAST, P.; POT, D.; LEROY, T.; ANDROCIOLI FILHO, A.; VIEIRA, L. G. E.; MAZZAFERA, P.; MARRACCINI, P. |
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Afiliação: |
CLARA GEROMEL, UNICAMP; LÚCIA PIRES FERREIRA, IAPAR; FABRICE DAVRIEUX, CIRAD-UMR; BERNARD GUYOT, CIRAD-UMR; FABIENNE RIBEYRE, CIRAD-UMR; MARIA BRÍGIDA DOS SANTOS SCHOLZ, IAPAR; LUIZ FILIPE PROTASIO PEREIRA, SAPC; PHILIPPE VAAST, CIRAD-UPR; DAVID POT, IAPAR/CIRAD-UMR; THIERRY LEROY, CIRAD-UMR; ARMANDO ANDROCIOLI FILHO, IAPAR; LUIZ GONZAGA ESTEVES VIEIRA, IAPAR; PAULO MAZZAFERA, UNICAMP; PIERRE MARRACCINI, IAPAR/CIRAD-UMF. |
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Título: |
Effects of shade on the development and sugar metabolism of coffee (Coffea arabica L.) fruits. |
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Ano de publicação: |
2008 |
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Fonte/Imprenta: |
PLANT PHYSIOLOGY AND BIOCHEMISTRY, v.46, n.5-6, p.569-579, may-june, 2008. |
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Páginas: |
569-579 |
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Idioma: |
Inglês |
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Conteúdo: |
Coffee fruits grown in shade are characterized by larger bean size than those grown under full-sun conditions. The present study assessed the effects of shade on bean characteristics and sugar metabolism by analyzing tissue development, sugar contents, activities of sucrose metabolizing enzymes and expression of sucrose synthase-encoding genes in fruits of coffee (Coffea arabica L.) plants submitted to full-sun (FS) and shade (SH) conditions. Evolution of tissue fresh weights measured in fruits collected regularly from flowering to maturation indicated that this increase is due to greater development of the perisperm tissue in the shade. The effects of light regime on sucrose and reducing sugar (glucose and fructose) contents were studied in fresh and dry coffee beans. Shade led to a significant reduction in sucrose content and to an increase in reducing sugars. In pericarp and perisperm tissues, higher activities of sucrose synthase (EC 2.4.1.13) and sucrose-phosphate synthase (SPS: EC 2.4.1.14) were detected at maturation in the shade compared with full sun. These two enzymes also had higher peaks of activities in developing endosperm under shade than in full sun. It was also noted that shade modified the expression of SUS-encoding genes in coffee beans; CaSUS2 gene transcripts levels were higher in SH than in FS. As no sucrose increase accompanied these changes, this suggests that sucrose metabolism was redirected to other metabolic pathways that need to be identified. |
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Palavras-Chave: |
Fruit development; Sugar metabolism. |
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Thesagro: |
Coffea Arábica. |
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Thesaurus Nal: |
Gene expression; Shade; Sucrose synthase. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/29378/1/Effects-of-shade.pdf
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Marc: |
LEADER 02512naa a2200361 a 4500
001 1880536
005 2011-07-07
008 2008 bl uuuu u00u1 u #d
100 1 $aGEROMEL, C.
245 $aEffects of shade on the development and sugar metabolism of coffee (Coffea arabica L.) fruits.$h[electronic resource]
260 $c2008
300 $a569-579
520 $aCoffee fruits grown in shade are characterized by larger bean size than those grown under full-sun conditions. The present study assessed the effects of shade on bean characteristics and sugar metabolism by analyzing tissue development, sugar contents, activities of sucrose metabolizing enzymes and expression of sucrose synthase-encoding genes in fruits of coffee (Coffea arabica L.) plants submitted to full-sun (FS) and shade (SH) conditions. Evolution of tissue fresh weights measured in fruits collected regularly from flowering to maturation indicated that this increase is due to greater development of the perisperm tissue in the shade. The effects of light regime on sucrose and reducing sugar (glucose and fructose) contents were studied in fresh and dry coffee beans. Shade led to a significant reduction in sucrose content and to an increase in reducing sugars. In pericarp and perisperm tissues, higher activities of sucrose synthase (EC 2.4.1.13) and sucrose-phosphate synthase (SPS: EC 2.4.1.14) were detected at maturation in the shade compared with full sun. These two enzymes also had higher peaks of activities in developing endosperm under shade than in full sun. It was also noted that shade modified the expression of SUS-encoding genes in coffee beans; CaSUS2 gene transcripts levels were higher in SH than in FS. As no sucrose increase accompanied these changes, this suggests that sucrose metabolism was redirected to other metabolic pathways that need to be identified.
650 $aGene expression
650 $aShade
650 $aSucrose synthase
650 $aCoffea Arábica
653 $aFruit development
653 $aSugar metabolism
700 1 $aFERREIRA, L. P.
700 1 $aDAVRIEUX, F.
700 1 $aGUYOT, B.
700 1 $aRIBEYRE, F.
700 1 $aSCHOLZ, M. B. dos S.
700 1 $aPEREIRA, L. F. P.
700 1 $aVAAST, P.
700 1 $aPOT, D.
700 1 $aLEROY, T.
700 1 $aANDROCIOLI FILHO, A.
700 1 $aVIEIRA, L. G. E.
700 1 $aMAZZAFERA, P.
700 1 $aMARRACCINI, P.
773 $tPLANT PHYSIOLOGY AND BIOCHEMISTRY$gv.46, n.5-6, p.569-579, may-june, 2008.
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Registro original: |
Embrapa Café (CNPCa) |
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Registro Completo
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Biblioteca(s): |
Embrapa Meio Ambiente. |
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Data corrente: |
16/03/2012 |
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Data da última atualização: |
30/10/2019 |
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Tipo da produção científica: |
Artigo em Anais de Congresso |
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Autoria: |
RAMOS, N. P.; PACKER, A. P.; VIEIRA, H. B.; MORICONI, W.; ASSIS, M. C. de; ROSSETTO, R. |
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Afiliação: |
NILZA PATRICIA RAMOS, CNPMA; ANA PAULA CONTADOR PACKER, CNPMA; HENRIQUE BARROS VIEIRA, CNPMA; WALDEMORE MORICONI, CNPMA; MARTA CAMARGO DE ASSIS, CNPMA; RAFFAELLA ROSSETTO, APTA. |
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Título: |
Weed population under different amounts of sugarcane straw in São Paulo State, Brazil. |
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Ano de publicação: |
2011 |
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Fonte/Imprenta: |
In: INTERNATIONAL SUGAR CONFERENCE, 4., 2011. Nova Delhi. Balancing sugar and energy production in developing countries: sustainable technologies and marketing strategies. Proceedings... Nova Delhi: IAPSIT, 2011. p. 127-129. |
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Idioma: |
Inglês |
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Conteúdo: |
Abstract: Maintenance of the straws on the soil surface has been proved essential for environrnental quality of the sugarcane productive system in Brazil. However, this practice requires changes in the current management systems used around the country. This requires the use of tolerant varieties to the presence of straw residue on the soil surface, improvement in fertilization process, and also pest, disease and weeds control. In this context, this study aimed to evaluate the incidence of weed populations in the sugarcane cultivation under different levels of straw, in order to support possible changes in the management of these plants. Treatments were based on five levels of straw left on the soil surface at harvest, as follows: 0% - 25% - 50% - 75% - 100%, arranged in a randomized block design with four replications. The weeds evaluation was performed using the square method randomly thrown on the floor throughout the experiment area, reaching a total of ten samples per plot. This method was used to determine the density (plants/m2) and absolute frequency (%) of the predominant species individuais in three assessments (34, 106 and 177 days after harvesting). It was observed the predominance of the species Cyperus rotundus L. and Cynodon dactylon L. Pers. independently of treatments applied. At 34 days after harvest Cyperus rotundus was the more frequent weed in the treatments with low and no straw respectively, however with 106 pos-harvests the presence of higher levels of straw (75% and 100%) privileged the growth of this species. Results shown that there was a tendency to increase the number of Cyperus rotundus individuais per area with the development sugarcane cycle, due to the increase in the layer of straw left on the soil. MenosAbstract: Maintenance of the straws on the soil surface has been proved essential for environrnental quality of the sugarcane productive system in Brazil. However, this practice requires changes in the current management systems used around the country. This requires the use of tolerant varieties to the presence of straw residue on the soil surface, improvement in fertilization process, and also pest, disease and weeds control. In this context, this study aimed to evaluate the incidence of weed populations in the sugarcane cultivation under different levels of straw, in order to support possible changes in the management of these plants. Treatments were based on five levels of straw left on the soil surface at harvest, as follows: 0% - 25% - 50% - 75% - 100%, arranged in a randomized block design with four replications. The weeds evaluation was performed using the square method randomly thrown on the floor throughout the experiment area, reaching a total of ten samples per plot. This method was used to determine the density (plants/m2) and absolute frequency (%) of the predominant species individuais in three assessments (34, 106 and 177 days after harvesting). It was observed the predominance of the species Cyperus rotundus L. and Cynodon dactylon L. Pers. independently of treatments applied. At 34 days after harvest Cyperus rotundus was the more frequent weed in the treatments with low and no straw respectively, however with 106 pos-harvests the presence of higher levels o... Mostrar Tudo |
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Palavras-Chave: |
Agricultural residue; Cana-de-açúcar; Sugarcane straw. |
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Thesagro: |
Palha; Praga de planta. |
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Thesaurus NAL: |
Soil conservation; Straw; Sugarcane; weeds. |
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Categoria do assunto: |
H Saúde e Patologia |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/55898/1/2011AA77.pdf
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Marc: |
LEADER 02714nam a2200277 a 4500
001 1919152
005 2019-10-30
008 2011 bl uuuu u00u1 u #d
100 1 $aRAMOS, N. P.
245 $aWeed population under different amounts of sugarcane straw in São Paulo State, Brazil.$h[electronic resource]
260 $aIn: INTERNATIONAL SUGAR CONFERENCE, 4., 2011. Nova Delhi. Balancing sugar and energy production in developing countries: sustainable technologies and marketing strategies. Proceedings... Nova Delhi: IAPSIT, 2011. p. 127-129.$c2011
520 $aAbstract: Maintenance of the straws on the soil surface has been proved essential for environrnental quality of the sugarcane productive system in Brazil. However, this practice requires changes in the current management systems used around the country. This requires the use of tolerant varieties to the presence of straw residue on the soil surface, improvement in fertilization process, and also pest, disease and weeds control. In this context, this study aimed to evaluate the incidence of weed populations in the sugarcane cultivation under different levels of straw, in order to support possible changes in the management of these plants. Treatments were based on five levels of straw left on the soil surface at harvest, as follows: 0% - 25% - 50% - 75% - 100%, arranged in a randomized block design with four replications. The weeds evaluation was performed using the square method randomly thrown on the floor throughout the experiment area, reaching a total of ten samples per plot. This method was used to determine the density (plants/m2) and absolute frequency (%) of the predominant species individuais in three assessments (34, 106 and 177 days after harvesting). It was observed the predominance of the species Cyperus rotundus L. and Cynodon dactylon L. Pers. independently of treatments applied. At 34 days after harvest Cyperus rotundus was the more frequent weed in the treatments with low and no straw respectively, however with 106 pos-harvests the presence of higher levels of straw (75% and 100%) privileged the growth of this species. Results shown that there was a tendency to increase the number of Cyperus rotundus individuais per area with the development sugarcane cycle, due to the increase in the layer of straw left on the soil.
650 $aSoil conservation
650 $aStraw
650 $aSugarcane
650 $aweeds
650 $aPalha
650 $aPraga de planta
653 $aAgricultural residue
653 $aCana-de-açúcar
653 $aSugarcane straw
700 1 $aPACKER, A. P.
700 1 $aVIEIRA, H. B.
700 1 $aMORICONI, W.
700 1 $aASSIS, M. C. de
700 1 $aROSSETTO, R.
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Embrapa Meio Ambiente (CNPMA) |
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