Root extracts of Bracchiaria humidicola andSaccharum spontaneum to increase N use by sugarcane

Kölln, Oriel Tiago; Franco, Henrique Coutinho Junqueira; Ferreira, Danilo Alves; Vargas, Vitor Paulo; Castro, Saulo Augusto de Quassi; Cantarella, Heitor; Caldana, Camila

doi:10.1590/0103-9016-2015-0093

Cited by 8 publications

(3 citation statements)

References 27 publications

(34 reference statements)

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“…The observed trend could suggest that a microwave power beyond 500 W damaged the structure of polysaccharides (Kölln et al, 2016;Maran et al, 2013;Wang, Y.H. et al, 2014).…”

Section: Screening Experiments A) Effects Of the Microwave Powermentioning

confidence: 97%

RSM-optimization of microwave-assisted extraction of R. laevigata polysaccharides with bioactivities

Gao,

Shen,

Guo

et al. 2023

Emir J Food Agric

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Rosa laevigata Michx. is an edible traditional Chinese medicinal herb that possesses several health benefits. This study optimized the microwave-assisted extraction conditions of polysaccharides from Rosa laevigata fruits and investigated the antimicrobial potency and the antioxidant activity of Rosa laevigata polysaccharides. The microwave power, extraction time, the number of extraction, and the solvent-to-solid ratio were established using a three-factor, three-level Box-Behnken Design (BBD) and Response Surface Methodology (RSM) using screening experiments. Maximum polysaccharides yields were obtained when extraction was done for 18 min at a microwave power of 516 W and using a liquid-solid ratio of 54 mL/g. The polysaccharides yield was 20.37 % under the optimized conditions (predictive value for 20.40 %). This study also determined the antioxidant activity and the antibacterial potency of Rosa laevigata fruits to enhance their functional characterization and medicinal use. The antioxidant experiment showed that when the concentration was 5.0 mg/mL, polysaccharides had the strongest scavenging ability to DPPH free radicals and ABTS free radicals, and the scavenging rate was 83.06 % and 99.38 % respectively. Furthermore, the antibacterial experiment showed that the polysaccharides exhibited prominent inhibition activities, the MIC against Staphylococcus aureus (S. aureus) and Escherichia coli (E. coli) at 3.13 mg/mL and 1.56 mg/mL, respectively. Keywords: Rosa laevigata Michx.; polysaccharides; microwave-assisted extraction; antibacterial activity; antioxidant activity

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“…The observed trend could suggest that a microwave power beyond 500 W damaged the structure of polysaccharides (Kölln et al, 2016;Maran et al, 2013;Wang, Y.H. et al, 2014).…”

Section: Screening Experiments A) Effects Of the Microwave Powermentioning

confidence: 97%

RSM-optimization of microwave-assisted extraction of R. laevigata polysaccharides with bioactivities

Gao,

Shen,

Guo

et al. 2023

Emir J Food Agric

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“…As a urease inhibitor, thiophosphric triamide (NBPT) can reduce NH 3 volatilization by 15-78% [3,4], and hydroquinone (HQ) inhibits urea hydrolysis and affects the ongoing transformation of urea hydrolysate. Nitrification inhibitors can restrain the transformation of NH 4 + into NO 2 − and NO 3 − and then reduce the loss of NO 3 − by leaching [5]. SR/CRF are manufactured by adding a coating to the surface of the fertilizer, and three types of products are there.…”

Section: Introductionmentioning

confidence: 99%

Enhancing Sugarcane Growth and Improving Soil Quality by Using a Network-Structured Fertilizer Synergist

et al. 2023

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High usage and low efficiency of fertilizers not only restrict sugarcane production but also destroy the soil environment in China. To solve this problem, a network-structured nanocomposite as a fertilizer synergist (FS) was prepared based on attapulgite (ATP) and polyglutamic acid (PGA). Field demonstrations were conducted from 2020 to 2021. Leaching tests and characterization were used to evaluate the ability of the network structure to control nutrient loss. The effects of FS on sugarcane growth and field soil quality were also investigated. The results showed FS could effectively reduce nitrogen loss by 20.30% and decrease fertilizer usage by at least 20%. Compared to fertilizer with the same nutrition, fertilizer with FS could enhance sugarcane yield and brix by 20.79% and 0.58 percentage points, respectively. Additionally, FS improved the soil physicochemical properties, including reducing the soil bulk density and increasing the contents of nitrogen, phosphorus, potassium, and organic matter. FS also altered the diversity of the bacteria and improved the bacterial richness. Our study shows this FS has a good ability to control nutrient loss, advance sugarcane agronomic traits, and improve soil quality. This work offers an option for the sustainable development of sugarcane through the novel FS.

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“…In addition, some plants produce inhibitors of nitrification that preserve N in NH4+ form in the soil (Kölln et al, 2016), named biological inhibition (BNI) promoted by plants (Subbarao et al, 2015) (Subbarao et al, 2009) (Zakir et al, 2008). Root extracts from plants used in agriculture (S. spontaneum, species that forms sugarcane hybrids cultivated) or pasture (B. humidicola) (Kölln et al, 2016) or soils cultivated with brachiarias (Fernandes et al, 2011) (Subbarao et al, 2009 in Cerrado biome decrease NO3accumulation in soil, but less than the inhibitory effect of DCD.…”

Section: Inhibition Of Nitrificationmentioning

confidence: 99%

Microbiologia do ciclo do nitrogênio em solos do cerrado

Pires¹

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iv Agradecimentos Agradeço ao meu orientador, Ricardo Krüger, pelo apoio às nossas idéias de pesquisa, esdrúxulas ou não. Obrigada pela liberdade que você nos dá no laboratório. A meu ver, um local de trabalho com liberdade, cobranças medidas e bom humor ajuda muito na fluidez da pesquisa. Seu humor, que não é fácil de entender, sempre me fez sentir em casa, e algumas das suas ironias ficarão marcadas. Tal como os momentos de geekness, como a explicação do nome de 454 para a plataforma de pirosequenciamento.Os trabalhos aqui realizados não existiriam sem o financiamento à pesquisa, especificamente pela FAP-DF, CNPq e CAPES. Agradeço especialmente à última, que financiou a minha bolsa de doutorado no país e no exterior.Agradeço às bancas de qualificação (Professoras Cristine, Mercedes e Sérgio) e de defesa (Professores Cynthia, Mercedes, Alexandre e Helson) desta tese que auxiliaram na discussão e no refinamento deste documento.Agradeço também aos professores colaboradores que fizeram parte mais diretamente das pesquisas apresentadas nesta tese: Gabriela Nardoto, Mercedes Bustamante e Jim Prosser.Entretanto, teria sido mais difícil de realizar esta tese se eu não tivesse ao meu lado parceiros de bancada e de computador: Fabyano, Ju, Re(nata) e Re(gina). E não tão diretamente relacionados ao meu dia-a-dia, mas também parte do grupo, agradeço à Débora, Paula e Samuel. E um especial obrigado à minha amiga que me chama de "orientadora -mirim", Helena Magaldi, que me ajudou muito na leitura e correção dos meus textos.Tenho um agradecimento especial a fazer ao Fabyano, parceiro científico, amigo, colega, nosso Thor do Cerrado. Aquele que me livrou de ataque de cupim e potencial ataque de suçuarana-pesquisador (?). Agradeço imensamente a oportunidade de termos trabalhado juntos. E espero que prospere o nosso plano de continuarmos colaborando em projetos futuros.A pesquisa do sisbiota só foi possível porque conseguimos (Eu e Fabyano) reunir mão-deobra amiga e voluntária para as várias coletas: Renata, Amanda, Lucas, Matias, Hugo e Huguinho.De mesma forma, consegui carregar muita gente para campo para coletar solo na Fazenda Tabapuã dos Pirineus. Agradeço especialmente ao Marciano, que esteve em todas as coletas e me auxiliou com rigor nos meus primeiros experimentos de PCR em tempo real. Agradeço também à Cecília Kosmann, à Carol Benévolo, ao Lucas Pimenta, e novamente à Ju e ao Fabyano.Um agradecimento especial deve ser feito ao Fabiano Nardoto, dono da Fazenda Tabapuã dos Pirineus. Não só permitiu o acesso livre à fazenda para os diferentes tempos de coleta, mas também nos proveu informações sobre a fazenda e a plantação de soja e de milho. 21 days it was possible to detect the activity of AOA with the quantification of amoA transcripts. Moreover, DGGE profiles showed a higher number of AOA amoA gene in the Craibstone-only slurries and similar to the mixed slurries, but lower in the Cerrado-only slurries. This was the first assessment of the N metabolism with metagenomic data and qPCR for ammonia oxidation in the Cerrad...

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Root extracts of Bracchiaria humidicola andSaccharum spontaneum to increase N use by sugarcane

Cited by 8 publications

References 27 publications

RSM-optimization of microwave-assisted extraction of R. laevigata polysaccharides with bioactivities

RSM-optimization of microwave-assisted extraction of R. laevigata polysaccharides with bioactivities

Enhancing Sugarcane Growth and Improving Soil Quality by Using a Network-Structured Fertilizer Synergist

Microbiologia do ciclo do nitrogênio em solos do cerrado

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