Preparation and characterization of nano-sized calcium carbonate as controlled release pesticide carrier for validamycin against Rhizoctonia solani

Qian, Kun; Shi, Tianyu; Tang, Tao; Zhang, Shaoliang; Liu, Xili; Cao, Yongsong

doi:10.1007/s00604-010-0523-x

Cited by 143 publications

(82 citation statements)

References 30 publications

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“…Validamycin A (35), the most active compound of the complex, is a fungicide that inhibits trehalases, enzymes that carry out the degradation of the nonreducing disaccharide trehalose [368][369][370] in plants, insects, and fungi as well as enhancing trehalose accumulation in transgenic plants. It is widely used in rice-producing countries in Asia to control sheath blight disease of the rice plants caused by the fungus Rhizoctonia solani [371][372][373][374][375][376][377][378][379][380][381][382][383][384][385].…”

Section: International Journal Of Carbohydrate Chemistrymentioning

confidence: 99%

Biosynthesis and Biological Activity of Carbasugars

Roscales

Plumet

2016

International Journal of Carbohydrate Chemistry

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The first synthesis of carbasugars, compounds in which the ring oxygen of a monosaccharide had been replaced by a methylene moiety, was described in 1966 by Professor G. E. McCasland's group. Seven years later, the first true natural carbasugar (5a-carba-R-D-galactopyranose) was isolated from a fermentation broth of Streptomyces sp. MA-4145. In the following decades, the chemistry and biology of carbasugars have been extensively studied. Most of these compounds show interesting biological properties, especially enzymatic inhibitory activities, and, in consequence, an important number of analogues have also been prepared in the search for improved biological activities. The aim of this review is to give coverage on the progress made in two important aspects of these compounds: the elucidation of their biosynthesis and the consideration of their biological properties, including the extensively studied carbapyranoses as well as the much less studied carbafuranoses.

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Section: International Journal Of Carbohydrate Chemistrymentioning

confidence: 99%

Biosynthesis and Biological Activity of Carbasugars

Roscales

Plumet

2016

International Journal of Carbohydrate Chemistry

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“…The surface-functionalized silica nanoparticle (SNP) developed by Debnath et al, 2011 (about 15-30 nm) caused 90% mortality in Sitophilus oryzae when comparing its effectiveness with conventional silica (> 1 µm). Qian et al, 2011 achieved 2 weeks of validamycin sustained release when nano-sized calcium carbonate (nano-CC) was used. Guan et al, 2010 encapsulated imidacloprid with a coating of chitosan and sodium alginate through layer-by-layer self-assembly, increasing its speed rate in soil applications.…”

Section: Production Of Nano-agrochemicalsmentioning

confidence: 99%

Nanotechnology and Food Industry

Gutiérrez¹,

Mussons²,

Gatón³

et al. 2012

Scientific, Health and Social Aspects of the Food Industry

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“…Polyketides have attracted great attention since these compounds have been widely applied as antibacterial drugs in medicine. Recently, some of polyketides such as validamycin, venturicidin, trichodermin, nikkomycin showed fine activities against plant pathogen fungi and have been widely applied as important biocontrol products (Rhodes et al, 1961;Bago et al, 1996;Yang et al, 2010;Qian et al, 2011). Most of polyketides have been isolated from Streptomyces, so Streptomyces play a key role due to their ability to produce numerous different polyketides.…”

Section: Introductionmentioning

confidence: 99%

Analysis of the Ketosynthase Genes in Streptomyces and Its Implications for Preventing Reinvestigation of Polyketides with Bioactivities

Qiu¹,

Liu²,

Yu³

et al. 2012

JAS

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Cucumber wilt by Fusarium oxysporium f sp. cucumarinum is one of the most important soil-borne diseases. Among control strategies for plant soil-borne pathogen, biocontrol systems eliminate neither pathogen nor disease but bring them into natural balance. Polyketides form the largest part of the known natural products, and most of them come from actinomycetes especially streptomyces. Analysis for the ketosynthase genes in streptomyces can implicate new polyketides. In the course of the screening for producers of polyketides with antifungal activities, 117 strains were isolated. The screening program was performed by means of PCR amplification using degenerated primers corresponding to type II ketosynthase (KS) genes. Among 117 isolates, 33 isolates showed antifungal activities and 17 isolates showed positive amplification signal. Antagonism of the 17 isolates against Fusarium oxysporium f sp. cucumarinum, Bacillus subtilis and Erwinia carotovora subsp. carotovora in vitro were analyzed. The diversities of KS-II gene from the 17 isolates were abundant based on phylogenetic tree analysis. The 17 isolates were divided into 6 clades based on KS-II gene sequence. The results showed that different isolates which belong to the same species present different antagonism activities and also the different streptomyces species showed different bioactivities. Among 17 isolates, isolates DQ1, DQ23, GAN1, HVG60 and HVG71 have the potential ability to produce new type polyketides. This method may not only prevent reinvestigation to find bioactive molecules described previously, but also alleviate some of the biases introduced by using conventional cultivation techniques.

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Preparation and characterization of nano-sized calcium carbonate as controlled release pesticide carrier for validamycin against Rhizoctonia solani

Cited by 143 publications

References 30 publications

Biosynthesis and Biological Activity of Carbasugars

Biosynthesis and Biological Activity of Carbasugars

Nanotechnology and Food Industry

Analysis of the Ketosynthase Genes in Streptomyces and Its Implications for Preventing Reinvestigation of Polyketides with Bioactivities

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