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Biblioteca(s):  Embrapa Milho e Sorgo.
Data corrente:  25/03/2022
Data da última atualização:  20/03/2023
Tipo da produção científica:  Artigo em Periódico Indexado
Autoria:  VASCONCELOS, M. J. V. de; FIGUEIREDO, J. E. F.; OLIVEIRA, M. F. de; SCHAFFERT, R. E.; RAGHOTHAMA, K. G.
Afiliação:  MARIA JOSE VILACA DE VASCONCELOS, CNPMS; JOSE EDSON FONTES FIGUEIREDO, CNPMS; MAURILIO FERNANDES DE OLIVEIRA, CNPMS; ROBERT EUGENE SCHAFFERT, CNPMS; KACHANDRA G. RAGHOTHAMA, Purdue University.
Título:  Plant phosphorus use efficiency in acid tropical soil.
Ano de publicação:  2022
Fonte/Imprenta:  Revista Brasileira de Milho e Sorgo, v. 21, e1259, 2022.
DOI:  https://doi.org/10.18512/rbms2022vol21e1259
Idioma:  Inglês
Conteúdo:  ABSTRACT - Phosphorus is an essential macronutrient for plant growth and development. However, phosphorus availability is low in many soils, and the plant?s ability to acquire phosphorus from the rhizosphere is critical in the acid soils of the Brazilian Cerrado. In addition, high levels of fixed phosphate (Pi) in many soils reduce the phosphorus availability to the plants. Thus, Pi deficiency is a significant concern for crop growth and high yields in tropical soils. The intra- and interspecific variations in plant growth under Pi-limiting conditions are complex traits controlled by many induced or suppressed genes, comprising an intricate epistatic regulatory network interacting within cells and the external environment. The microRNA genes (miRNAs), a class of regulators that induce, degrade or repress mRNA transcription and translation, are another critical aspect of this network. As a result, changes in morphology (growth and root architecture) and physiological (enzymes, organic acids, and anthocyanin) can be observed in plants under Pi stress. Furthermore, symbiotic associations with phosphatesolubilizing bacteria and mycorrhizal fungi increase the phosphorus availability to plants. Therefore, understanding the mechanisms involved in plant adaptation to phosphorus deficiency is critical for developing cultivars adapted to low phosphorus levels in the Brazilian Cerrado. This review addresses the molecular mechanisms controlling P-acquisition and P-use by plants and disc... Mostrar Tudo
Palavras-Chave:  Pi transporters; Pi-use efficiency; Transportador de fosfato.
Thesagro:  Eficiência Nutricional; Fósforo; Solo Ácido.
Thesaurus Nal:  Acid soils.
Categoria do assunto:  S Ciências Biológicas
URL:  https://ainfo.cnptia.embrapa.br/digital/bitstream/item/232945/1/Plant-phosphorus.pdf
Marc:  Mostrar Marc Completo
Registro original:  Embrapa Milho e Sorgo (CNPMS)
Biblioteca ID Origem Tipo/Formato Classificação Cutter Registro Volume Status URL
CNPMS29791 - 1UPCAP - DD
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Biblioteca(s):  Embrapa Florestas.
Data corrente:  04/01/2017
Data da última atualização:  07/11/2019
Tipo da produção científica:  Artigo em Periódico Indexado
Circulação/Nível:  A - 1
Autoria:  DOMÍNGUEZ, A.; BROWN, G. G.; SAUTTER, K. D.; OLIVEIRA, C. M. R. de; VASCONCELOS, E. C. de; NIVA, C. C.; BARTZ, M. L. C.; BEDANO, J. C.
Afiliação:  ANAHÍ DOMÍNGUEZ, CONICET; GEORGE GARDNER BROWN, CNPF; KLAUS DIETER SAUTTER, UNIVERSIDADE POSITIVO; CINTIA MARA RIBAS DE OLIVEIRA, UNIVERSIDADE POSITIVO; ELIANE CARVALHO DE VASCONCELOS, UNIVERSIDADE POSITIVO; CINTIA CARLA NIVA, CPAC; MARIE LUISE CAROLINA BARTZ, UNIVERSIDADE POSITIVO; JOSÉ CAMILO BEDANO, CONICET.
Título:  Toxicity of AMPA to the earthworm Eisenia andrei Bouché, 1972 in tropical artificial soil.
Ano de publicação:  2016
Fonte/Imprenta:  Scientific Reports, London, v. 6, Article 19731, 21 Jan. 2016. 8 p.
DOI:  10.1038/srep19731
Idioma:  Inglês
Conteúdo:  Aminomethylphosphonic acid (AMPA) - one of glyphosate's main metabolites - has been classified as persistent in soils, raising concern regarding the widespread use of glyphosate in agriculture and forestry. Glyphosate may have negative or neutral effects on soil biota, but no information is available on the toxicity of AMPA to soil invertebrates. Therefore our aim was to study the effect of AMPA on mortality and reproduction of the earthworm species Eisenia andrei using standard soil ecotoxicologica I methods (ISO). Field-relevant concentrations of AMPA had no significant effects on mortality in acute or chronic assays. Except at the highest concentration tested, a significant biomass loss was observed compared to controls in the chronic assay. The number of juveniles and cocoons increased with higher concentrations of AMPA applied, but their mean weights decreased. This mass loss indicates higher sensitivity of juveniles than adults to AMPA. Our results suggest that earthworms coming from parents grown in contaminated soils may have reduced growth, limiting their beneficial roles in key soil ecosystem functions. Nevertheless, further research is needed to better understand the mechanisms underlying the sublethal effects observed here.
Palavras-Chave:  Aminomethylphosphonic Acid; Earthworm; Ecotoxicological Assessement; Foetida; Herbicide Glyphosate; Solo tropical artificial.
Thesagro:  Aminoácido; Herbicida; Minhoca; Recuperação do solo; Solo tropical.
Thesaurus NAL:  Aminomethylation; Biomass; Degradation; Dynamics; Ecotoxicology; Herbicides; Pesticides.
Categoria do assunto:  P Recursos Naturais, Ciências Ambientais e da Terra
URL:  https://ainfo.cnptia.embrapa.br/digital/bitstream/item/152734/1/2016-G.Brown-SR-Toxicity-of-AMPA.pdf
Marc:  Mostrar Marc Completo
Registro original:  Embrapa Florestas (CNPF)
Biblioteca ID Origem Tipo/Formato Classificação Cutter Registro Volume Status
CNPF55522 - 1UPCAP - PP
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