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| Registros recuperados : 72 | |
| 41. |  | SOUSA, D. C. de; ROSA, J. D.; MEDEIROS, J. C.; BOECHAT, C. L.; NÓBREGA, R. S. A.; SOUZA, H. A. de; SAGRILO, E. Microbial indicators of soil quality and soybean yield in agricultural production system using cover crops under no-tillage. Australian Journal of Crop Science, v. 17, n. 6, p. 507-515, 2023.| Biblioteca(s): Embrapa Meio-Norte. |
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| 42. | | DIÓGENES, L. C.; NÓBREGA, J. C. A.; NÓBREGA, R. S. A.; ANDRADE JUNIOR, A. S. de; PRAGANA, R. B.; MATIAS, S. S. R. Microbial attributes and carbon and nitrogen stocks in Latosol under irrigated monocropping and intercropping. Revista de Ciências Agrárias, Belém, PA, v. 56, n. 2, p. 106-111, abr./jun. 2013.| Biblioteca(s): Embrapa Meio-Norte. |
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| 43. | | NÓBREGA JÚNIOR, J. E. da; RIET-CORREA, F.; NÓBREGA, R. S.; MEDEIROS, J. M. de; VASCONCELOS, J. S. de; SIMÕES, S. V. D.; TABOSA, I. M. Mortalidade perinatal de cordeiros no semi-árido da Paraíba. Pesquisa Veterinária Brasileira, Rio de Janeiro, v. 25, n. 3, p. 171-178, jul./set., 2005.| Biblioteca(s): Embrapa Caprinos e Ovinos. |
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| 44. | | NÓBREGA, R. S. A.; FERREIRA, P. A. A.; SANTOS, J. G. D. dos; VILAS BOAS, R. C.; NÓBREGA, J. C. A.; MOREIRA, F. M. de S. Efeito do composto de lixo urbano e calagem no crescimento inicial de mudas de Enterolobium contortisiliquum (Vell.) Morong. Scientia Forestalis, Piracicaba, v. 36, n. 79, p 181-189, set. 2008.| Biblioteca(s): Embrapa Florestas. |
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| 45. | | IMAÑA ENCINAS, J.; WOO, J. C.; NÓBREGA, R. C. da; JACINTO, J. M. de M.; PAULA, J. E. de; IMAÑA, C. R. Aplicação do sensoriamento remoto para caracterização ambiental de 80.000 ha às margens do Rio Paraguai. Brasília, DF: UNB, Departamento de Engenharia Florestal, 2000. 28 p. il. (UNB. Departamento de Engenharia Florestal. Comunicações técnicas florestais, v. 2, n. 4).| Biblioteca(s): Embrapa Amazônia Oriental; Embrapa Pantanal; Embrapa Uva e Vinho. |
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| 46. | | TORRES, E. B.; NÓBREGA, R. S. A.; FERNANDES JUNIOR, P. I.; SILVA, L. B.; CARVALHO, G. dos S.; MARINHO, R. de C. N.; PAVAN, B. E. The damage caused by Callosobruchus maculatus on cowpea grains is dependent on the plant genotype. Journal of the Science of Food and Agriculture, v. 96, n. 12, p. 4276-4280, 2016.| Biblioteca(s): Embrapa Semiárido. |
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| 47. | | FIEDLER, N. C.; SOUZA, J. S. de; JACINTO, J. M. de M.; SILVA, J. C.; MEDEIROS, M. B. de; NOBREGA, R. C. da. Combate aos incêndios florestais. Brasília, DF: UNB, Departamento de Engenharia Florestal, 2000. 36 p. il. (UNB. Departamento de Engenharia Florestal. Comunicações técnicas florestais, v. 2, n. 3).| Biblioteca(s): Embrapa Amazônia Oriental. |
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| 48. | | BEIROA, A. M. M.; CABRAL, L. M. C.; BIZZO, H. R.; MATTA, V. M.; BORGES, C. P. NÓBREGA, R.; HABERT, A. C.; PEREIRA, C. C. Obtenção de concentrado de aroma de maracujá por pervaporação (passiflora edulis f. flavicarpa). In.: SIMPÓSIO LATINO AMERICANO DE CIÊNCIA DE ALIMENTOS, 5., 2003, Campinas, SP. Resumos... Campinas, 2003. 1 CD-Rom.| Biblioteca(s): Embrapa Agroindústria de Alimentos. |
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| 49. | | NÓBREGA, R. S. A.; PAULA, A. M. de; VILAS BOAS, R. C.; NÓBREGA, J. C. A.; MOREIRA, F. M. de S. Parâmetros morfológicos de mudas de Sesbania virgata (Caz.) Pers e de Anadenanthera peregrina (L.) cultivadas em substrato fertilizado com composto de lixo urbano. Revista Árvore, Viçosa, v. 32, n. 3, p. 587-597, maio/jun. 2008.| Biblioteca(s): Embrapa Florestas. |
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| 50. | | ALMEIDA, A. L. G. de; ALCANTARA, R. M. C. M. de; NÓBREGA, R. S. A.; NÓBREGA, J. C. A.; LEITE, L. F. C.; SILVA, J. A. L. da. Produtividade do feijão-caupi cv BR 17 Gurguéia inoculado com bactérias diazotróficas simbióticas no Piauí. Agrária, Recife, v. 5, n. 3, p. 364-369, jul./set. 2010.| Biblioteca(s): Embrapa Meio-Norte. |
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| 51. | | COSTA, E. M. da; NÓBREGA, R. S. A.; CARVALHO, F. de; TROCHMANN, A.; FERREIRA, L. de V. M.; MOREIRA, F. M. de S. Promoção do crescimento vegetal e diversidade genética de bactérias isoladas de nódulos de fijão-caupi. Pesquisa Agropecuária Brasileira, Brasília, DF, v. 48, n. 9, p. 1275-1284, set. 2013. Título em inglês: Plant growth promotion and genetic diversity of bacteria isolated from cowpea nodules.| Biblioteca(s): Embrapa Solos / UEP-Recife; Embrapa Unidades Centrais. |
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| 52. | | ASSIS, A. R.; CABRAL, L. M. C.; BIZZO, H. R.; MATTA, V. M.; BORGES, C. P.; NOBREGA, R.; HABERT, A. C.; PEREIRA, C. Recuperação dos componentes do aroma do suco de caju por pervaporação: influência da temperatura do processo. In.: SIMPÓSIO LATINO AMERICANO DE CIÊNCIA DE ALIMENTOS, 5., 2003, Campinas, SP. Resumos... Campinas, 2003. 1 CD-Rom.| Biblioteca(s): Embrapa Agroindústria de Alimentos. |
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| 53. | | BEZERRA, U. A.; CUNHA, J.; VALENTE, F.; NÓBREGA, R. L. B.; ANDRADEM J. M.; MOURA, M. S. B. de; VERHOEF, A.; PEREZ-MARIN, A. M.; GALVÃO, C. O. STEEP: a remotely-sensed energy balance model for evapotranspiration estimation in seasonally dry tropical forests. Agricultural and Forest Meteorology, v. 333, 109408, 2023.| Biblioteca(s): Embrapa Semiárido. |
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| 54. | | LIRA JÚNIOR, M. A.; FRACETTO, G. G. M.; ARAÚJO, A. S. F.; FRACETTO, F. J. C.; NOBREGA, R. S. A.; SILVA, K. da; GALDINO, A. C. Rhizobial Diversity for Tropical Pulses and Forage and Tree Legumes in Brazil. In: KHAN, M. S.; MUSARRAT, J.; ZAIDI, A. (Ed.). Microbes for Legume Improvement. Springer eBooks, 2017. p. 135-151.| Biblioteca(s): Embrapa Roraima. |
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| 56. | | DIÓGENES, L. C.; NÓBREGA, J. C. A.; NÓBREGA, R. S. A.; ANDRADE JUNIOR, A. S. de; SILVA, J. L. da; MATIAS, S. S. R.; SANTOS, G. G. Resistência à penetração e atributos químicos em um latossolo do Piauí sob monocultivos e consórcio de gramíneas irrigados. Irriga, Botucatu, Ed. esp. Grandes Culturas, p. 181-195, 2016.| Biblioteca(s): Embrapa Meio-Norte. |
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| 57. | | MARINHO, R. de C. N.; NÓBREGA, R. S. A.; ZILLI, J. E.; XAVIER, G. R.; SANTOS, C. A. F.; AIDAR, S. de T.; MARTINS, L. M. V.; FERNANDES JUNIOR, P. I. Field performance of new cowpea cultivars inoculated with efficient nitrogen-fixing rhizobial strains in the Brazilian Semiarid. Pesquisa Agropecuária Brasileira, Brasília, DF, v. 49, n. 5, p. 395-402, 2014.| Biblioteca(s): Embrapa Semiárido; Embrapa Unidades Centrais. |
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| 58. | | NASCIMENTO, R. de C.; BARDEN, H. S. S.; ESCOBAR, I. E. C.; CAVALCANTI, M. I. P.; RODRIGUES, D. R.; OLIVEIRA, K. G.; NASCIMENTO, T. R. do; NÓBREGA, R. S. A.; FERNANDES JUNIOR, P. I. Eficiência simbiótica de novos isolados de rizóbio de feijão-caupi oriundos de solos do ecótono Caatinga-Cerrado no Sudoeste do Piauí In: SIMPÓSIO DE MUDANÇAS CLIMÁTICAS E DESERTIFICAÇÃO NO SEMIÁRIDO BRASILEIRO, 4., 2015, Petrolina. Experiências e oportunidades para o desenvolvimento. Petrolina: Embrapa Semiárido, 2015. 1 CD-ROM. (Embrapa Semiárido. Documentos, 262).| Biblioteca(s): Embrapa Semiárido. |
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| 59. | | NASCIMENTO, R. de C.; CAVALCANTI, M. I. P.; CORREIA, A. de J.; ESCOBAR, I. E. C.; FREITAS, A. D. S. de; NÓBREGA, R. S. A.; FERNANDES JUNIOR, P. I. Maize-associated bacteria from the Brazilian semiarid region boost plant growth and grain yield. Symbiosis, v. 83, p. 347-359, 2021.| Biblioteca(s): Embrapa Semiárido. |
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| 60. | | CAVALCANTI, M. I. P.; NASCIMENTO, R. de C.; RODRIGUES, D. R.; ESCOBAR, I. E. C.; FRAIZ, A. C. R.; SOUZA, A. P. de; FREITAS, A. D. S. de; NOBREGA, R. S. A.; FERNANDES JUNIOR, P. I. Maize growth and yield promoting endophytes isolated into a legume root nodule by a cross-over approach. Rhizosphere, v. 15, 100211, Sept. 2020.| Biblioteca(s): Embrapa Semiárido. |
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| Registros recuperados : 72 | |
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Registro Completo
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Biblioteca(s): |
Embrapa Florestas. |
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Data corrente: |
15/09/2008 |
|
Data da última atualização: |
15/09/2008 |
|
Autoria: |
MÉNDEZ, J.; ALVAREZ-OTERO, R.; BRIONES, M. J. I. |
|
Título: |
Morphological and structural aspects of the earthworm calciferous gland and its calcareous secretion. |
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Ano de publicação: |
2008 |
|
Fonte/Imprenta: |
In: INTERNATIONAL COLLOQUIUM ON SOIL ZOOLOGY, 15; INTERNATIONAL COLLOQUIUM ON APTERYGOTA, 12., 2008, Curitiba. Biodiversity, conservation and sustainabele management of soil animal: abstracts. Colombo: Embrapa Florestas. Editors: George Gardner Brown; Klaus Dieter Sautter; Renato Marques; Amarildo Pasini. 1 CD-ROM. |
|
Idioma: |
Inglês |
|
Conteúdo: |
The oesophageal glands of earthworms are commonly referred as calciferous glands and they
are present in all species of the family Lumbricidae. Most studies have mainly focused on the
well-known Lumbricus terrestris, however many structural aspects are still unknown for the
majority of the species included in the family and the significance of their secretions remains
uncertain. In this study we provide new insights into the morphology and ultraestructure of several
earthworm species belonging to three genera (Allolobophora, Dendrobaena and Octolasion)
collected from different locations in Europe. Earthworms were hand-sorted in the field and taken
back to the laboratory for removal of the glands by dissection. The morphological studies of the
mineral phases involved in the calcareous secretions were analysed by field emission scanning
electron microscopy (FE-SEM) of the air dried frozen sections. Results showed that the anatomy
of the glands of these three genera falls into three types: (i) pouches and oesophageal
enlargements present (Octolasion), pouches present but no enlargements (Allolobophora),
pouches absent but enlargements present (Dendrobaena). Calcium secretion usually appears
initially to be a ?milky fluid? and in those species with pouches the calcium carbonate crystals
aggregate resulting in bigger concretions of different sizes. The morphological characterisation
of the mineral secreetion using FE-SEM showed that the glandular segments contained
spherulites usually packing the interlamellae spaces. These spherulithic deposits mainly consisted
of ovoid to spherical particles varying in size. In contrast, all the morphologies detected in the
solid concretions stored in the pouches could be classified into spherulithic, mulberry-like
aggregates and rhombohedral crystals. Coalescence between two or more spheres was
occasionally observed leading to the formation of larger aggregates, and possibly to the ultimate
formation of rhombohedral calcite crystals. These results evidence that the differences in the
anatomy of the gland determine the morphology of the calcareous secretion among different
species. MenosThe oesophageal glands of earthworms are commonly referred as calciferous glands and they
are present in all species of the family Lumbricidae. Most studies have mainly focused on the
well-known Lumbricus terrestris, however many structural aspects are still unknown for the
majority of the species included in the family and the significance of their secretions remains
uncertain. In this study we provide new insights into the morphology and ultraestructure of several
earthworm species belonging to three genera (Allolobophora, Dendrobaena and Octolasion)
collected from different locations in Europe. Earthworms were hand-sorted in the field and taken
back to the laboratory for removal of the glands by dissection. The morphological studies of the
mineral phases involved in the calcareous secretions were analysed by field emission scanning
electron microscopy (FE-SEM) of the air dried frozen sections. Results showed that the anatomy
of the glands of these three genera falls into three types: (i) pouches and oesophageal
enlargements present (Octolasion), pouches present but no enlargements (Allolobophora),
pouches absent but enlargements present (Dendrobaena). Calcium secretion usually appears
initially to be a ?milky fluid? and in those species with pouches the calcium carbonate crystals
aggregate resulting in bigger concretions of different sizes. The morphological characterisation
of the mineral secreetion using FE-SEM showed that the glandular segments contained
spherulites us... Mostrar Tudo |
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LEADER 02856naa a2200145 a 4500
001 1314802
005 2008-09-15
008 2008 bl uuuu u00u1 u #d
100 1 $aMÉNDEZ, J.
245 $aMorphological and structural aspects of the earthworm calciferous gland and its calcareous secretion.
260 $c2008
520 $aThe oesophageal glands of earthworms are commonly referred as calciferous glands and they are present in all species of the family Lumbricidae. Most studies have mainly focused on the well-known Lumbricus terrestris, however many structural aspects are still unknown for the majority of the species included in the family and the significance of their secretions remains uncertain. In this study we provide new insights into the morphology and ultraestructure of several earthworm species belonging to three genera (Allolobophora, Dendrobaena and Octolasion) collected from different locations in Europe. Earthworms were hand-sorted in the field and taken back to the laboratory for removal of the glands by dissection. The morphological studies of the mineral phases involved in the calcareous secretions were analysed by field emission scanning electron microscopy (FE-SEM) of the air dried frozen sections. Results showed that the anatomy of the glands of these three genera falls into three types: (i) pouches and oesophageal enlargements present (Octolasion), pouches present but no enlargements (Allolobophora), pouches absent but enlargements present (Dendrobaena). Calcium secretion usually appears initially to be a ?milky fluid? and in those species with pouches the calcium carbonate crystals aggregate resulting in bigger concretions of different sizes. The morphological characterisation of the mineral secreetion using FE-SEM showed that the glandular segments contained spherulites usually packing the interlamellae spaces. These spherulithic deposits mainly consisted of ovoid to spherical particles varying in size. In contrast, all the morphologies detected in the solid concretions stored in the pouches could be classified into spherulithic, mulberry-like aggregates and rhombohedral crystals. Coalescence between two or more spheres was occasionally observed leading to the formation of larger aggregates, and possibly to the ultimate formation of rhombohedral calcite crystals. These results evidence that the differences in the anatomy of the gland determine the morphology of the calcareous secretion among different species.
700 1 $aALVAREZ-OTERO, R.
700 1 $aBRIONES, M. J. I.
773 $tIn: INTERNATIONAL COLLOQUIUM ON SOIL ZOOLOGY, 15; INTERNATIONAL COLLOQUIUM ON APTERYGOTA, 12., 2008, Curitiba. Biodiversity, conservation and sustainabele management of soil animal: abstracts. Colombo: Embrapa Florestas. Editors: George Gardner Brown; Klaus Dieter Sautter; Renato Marques; Amarildo Pasini. 1 CD-ROM.
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