摘要:
The invention relates to the cloning, sequencing and characterization of the gene responsible for Quorum Quenching (QQ) activity against Quorum Sensing (QS) signals of the Tenacibaculum sp. strain 20J (CECT7426). Said gene encodes a peptide having at least lactonase activity with a percentage of identity less than 38% with the lactonases described up until now for other species, as well as the sequences of the homologous genes present in other species of the genus Tenacibaculum. Said peptide shows a broad spectrum of activity degrading optionally substituted N-acyl-homoserine lactones (AHLs) of 4-14 carbon atoms in the side chain thereof, is active at pH comprised between 3 and 9, proteinase K- and chymotrypsin-resistant and does not interact with ²-lactam antibiotics.
摘要:
Compositions and methods for controlling pests are provided. The methods involve transforming organisms with a nucleic acid sequence encoding an insecticidal protein. In particular, the nucleic acid sequences are useful for preparing plants and microorganisms that possess insecticidal activity. Thus, transformed bacteria, plants, plant cells, plant tissues and seeds are provided. Compositions are insecticidal nucleic acids and proteins of bacterial species. The sequences find use in the construction of expression vectors for subsequent transformation into organisms of interest, as probes for the isolation of other homologous (or partially homologous) genes. The insecticidal proteins find use in controlling, inhibiting growth or killing lepidopteran, coleopteran, dipteran, fungal, hemipteran, and nematode pest populations and for producing compositions with insecticidal activity.
摘要:
Disclosed is a plant protection agent comprising an amorphous and/or microcrystalline silicon- and phosphorus-containing iron oxide, and a method for controlling plant diseases, comprising the step of applying the plant protection agent.
摘要:
Procedures are described which use solvents to increase the topical insecticidal activity of toxic insect peptides. These procedures comprise drying the peptides, if needed, followed by the addition of either: 1) a polar organic solvent, with or without water, to a dried peptide, or 2) the addition of polar aprotic solvent or other adjuvant to the dried peptide, followed by the addition of either: 1) a polar organic solvent, with or without water, (where a polar aprotic solvent is added first) or 2) a polar aprotic solvent or other adjuvant to the peptide polar organic solvent (where the polar organic solvent is added first), to the peptide formulation.
摘要:
Provided is a bacterial strain which produces a family of mosquitocidal toxins, Xenorhabdus MT, on deposit with the American Type Culture Collection, PTA-6826, insecticidal compositions comprising the mosquitocidal toxin(s) produced by Xenorhabdus MT, a mosquitocidal toxin preparation prepared from spent culture medium, whole culture or cells or a mixture thereof, of Xenorhabdus MT and method of insect control, especially mosquito control. Also provided are microbial compounds (same as mosquitocidal toxins) compositions comprising them and use in formulating therapeutic and other antimicrobial compositions, and methods of use for inhibiting microbial growth and for treating infection.
摘要:
The present invention relates to sequential applications of fluopyram treatment blocks followed by treatment blocks of biological control agents, in particular Bacillus subtilis QST 713 in order to control fungal pathogens.
摘要:
A repellant for repelling root-knot nematodes ( Meloidogyne spp .) that comprises as an active ingredient a substance secreted by a cellular slime mold belonging to the genus Dictyostelium. The substance secreted by the cellular slime mold can be obtained by, for example, culturing the cellular slime mold to form fruiting bodies, then separating the cellular slime mold and extracting. As the cellular slime mold, D. discoideum, D. purpureum, D. mucoroides, D. fasciculatum, D. monochasioides, D. lacteum or D. giganteum may be used. Thus, root-knot nematodes can be repelled without exerting any bad influence upon crops and workers.
摘要:
The present invention relates to a method for modulating plant processes said method being characterized in that a plant is fed with an eco-friendly, plant- and/or algae-derived, biostimulant composition comprising exogenous small RNA molecules. In particular, the method of the invention can be used for modulating physiological or pathological plant processes, such plant growth, plant productivity, fruit quality, quality of produce, plant yield, plant response to abiotic stress and plant resistance to diseases or to infections.