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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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Registro Completo

Biblioteca(s):  Embrapa Milho e Sorgo.
Data corrente:  13/07/2022
Data da última atualização:  13/07/2022
Tipo da produção científica:  Artigo em Periódico Indexado
Circulação/Nível:  B - 1
Autoria:  REIS, C. O. dos; MAGALHAES, P. C.; AMBROSIO, A. dos S.; ALMEIDA, L. G.; CARVALHO, D. T.; SOUZA, T. C, de.
Afiliação:  CAROLINE OLIVEIRA DOS REIS, Universidade Federal de Lavras; PAULO CESAR MAGALHAES, CNPMS; ALEXANDRA DOS SANTOS AMBRÓSIO, Universidade Federal de Alfenas; LORENA GABRIELA ALMEIDA, Universidade Federal de Lavras; DIOGO TEIXEIRA CARVALHO, Universidade Federal de Alfenas; THIAGO CORREA DE SOUZA, Universidade Federal de Alfenas.
Título:  Do chitosan and its derivatives have the same protective effect on drought-contrasting maize genotypes? An analysis of physiological and production processes.
Ano de publicação:  2022
Fonte/Imprenta:  Australian Journal of Crop Science, v. 16, n. 2, p. 208-215, 2022.
Idioma:  Português
Conteúdo:  Water stress is among the most severe abiotic stress factors for maize production. The application of chitosan causes various responses in plants, as a function of its structure and concentration. Therefore, chemical modifications were proposed in this study to enhance the biological effects on plants. Hybrid maize plants with drought-contrasting characteristics, were subjected to water deficit and spraying with chitosan (CHI) and semi-synthesized chitosan derivatives, N‑Succinyl (SUC) and N,O‑Dicarboxymethyl (MCA). The obtained data show that the application of CHI and its derivatives (0.5 mg.plant-1 ) led to an increase in production for the two evaluated hybrids in comparison with the control under stress. Regarding leaf gas exchange, over the stress period, it was observed that the application of the MCA derivative yielded greater Pn than the other treatments in plants subjected to drought, in both hybrids. In the evaluation of chlorophyll content, there was an increase in this content through the application of CHI and its derivatives for both maize hybrids under study. With water recovery in plants, the water potential (Ψmd) of those treated with chitosan derivatives was greater than that of the irrigated control plants. In the quantification of proline concentration, higher values were observed in plants treated with MCA derivatives for the drought-sensitive hybrid. Chitosan derivatives, SUC and MCA, were responsible for higher starch concentrations i... Mostrar Tudo
Palavras-Chave:  Quitosana.
Thesagro:  Milho; Seca.
Categoria do assunto:  F Plantas e Produtos de Origem Vegetal
URL:  https://ainfo.cnptia.embrapa.br/digital/bitstream/doc/1144687/1/Do-chitosan-and-its-derivatives-have-the-same-protective-effect.pdf
Marc:  Mostrar Marc Completo
Registro original:  Embrapa Milho e Sorgo (CNPMS)
Biblioteca ID Origem Tipo/Formato Classificação Cutter Registro Volume Status
CNPMS29856 - 1UPCAP - DD
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