227 results about "Elicitor" patented technology

A liquid micronutirent elicitor involving a cell to cell signal transduction system within a plant which is applied to propagules (seed and / or plant) causes natural defensive responses to be produced by the seed and / or plant. This substance may exist as a seed coating, irrigation water, and / or foliar spray for a period of time so that the propagules may have enhanced disease control until the propagule develops sufficiently to fend for itself against parasitic nematodes. The benefits of incorporating the solution include increased vigor, blooms, and harvests. Crops include legumes including soybeans, as well as wheat, canola, corn, peanuts, sunflowers, peppers, tomatoes, grapes, and potatoes.

The invention discloses a phellinus igniarius mycelium liquid fermentation method by utilizing a fungal elicitor for improving the yield of flavone of phellinus igniarius, which comprises the steps of: inoculating a fungal elicitor strain for activated culture, and then inoculating and culturing a fungal block to obtain a fungal elicitor mycelium through filtration; then drying, grinding and crushing the fungal elicitor mycelium, adding the crushed fungal elicitor mycelium into ethanol for soaking, filtering the obtained solution, collecting filter residue, orderly adding a mixed solution of chloroform and normal butanol, acetone and water into the filter residue for washing, adding trifluoroacetic acid into a dry substance after the air-drying, performing boiling water bath for 0.5 to 2 hours, then filtering the obtained solution, taking a filtrate for neutralization, standing the filtrate, using a microporous filtering film with the pore diameter between 0.4 and 5mu m to filter the filtrate for sterilization to obtain the fungal elicitor, and cryopreserving the fungal elicitor at the temperature of between 10 and 20 DEG C below zero; inoculating a phellinus igniarius strain for activated culture, and then inoculating a fungal block for fermentation culture; and adding the fungal elicitor into the phellinus igniarius to continue culturing to obtain a phellinus igniarius mycelium within 1 to 5 days of liquid fermentation culture of the phellinus igniarius. The method has simple process, low cost and remarkable effect, can greatly improve the content of the flavone of phellinus igniarius cells, and is a production method with industrialization prospect.

A 23 amino acid peptide, AtPep1, plays an important role as a signaling component of the innate immune system of Arabidopsis. The peptide precursor gene is transcribed in response to elicitors generated by pathogens, and AtPep1 is produced to amplify the signaling pathways. Seven paralogs of the AtproPep1 gene have been identified in the Arabidopsis genome, and orthologs have been identified in species of several agriculturally important families. AtPep1 and its paralogs and orthologs play important roles as endogenous signals to amplify innate immunity. The sequences of two AtPep1 receptors from Arabidopsis are also provided.

The invention discloses the application of burdock fructo-oligosaccharide as disease resistance elicitor in agriculture. Burdock fructo-oligosaccharide is natural oligosaccharide with good water solubility and stability extracted form burdock root. The invention comprises applying burdock fructo-oligosaccharide as disease resistance elicitor to promote plant growth and induce plant disease resistance. Burdock fructo-oligosaccharide can promote plant growth in different seedling stages, reinforce procatarxis of the seedlings, and promote the formation of strong seedlings.

The invention relates to penicillium protein elicitor EPTP and application thereof in improving plant disease resistance. The protein sequence of the EPTP protein elicitor is shown as SEQ ID NO.2, and the molecular weight is 19247 Da. EPTP induces significant increase of activity of phenylalanine ammonialyase, peroxidase and polyphenol oxidase, and when the elicitor induces tobacco anaphylactic reaction, an anaphylactic reaction marker gene hin1 is induced to express; it is indicated through semiquantitative RT-PCR results that EPTP can induce tobacco to obtain systemic acquired resistance, cause up-regulation of the tobacco blade resistance gene transcription level, and induce expression of resistance gene related to the salicylic acid path and the jasmonic acid path. After being applied, EPTP can improve resistance to viruses and pathogenic bacteria by plants, takes effects efficiently, does not pollute environment, reduces dosage of chemical pesticide and has wide application prospects as a plant immunity activator.

The liquid elicitor of chitin and chitosan and micronutrient trace elements of the present invention involves induced systemic resistance (ISR) / innate immunity responses within plants. Dilute solutions are applied to propagules (fractions of microgram per seed and / or plant), which causes natural biotic defense responses by seedlings and / or plants. The application may be as seed coating, irrigation water, and / or foliar spray, wherein propagules bioactivate systemic disease defenses against bacteria, fungi, insects and parasitic nematodes. Benefits include enhanced biocontrol of seed viability, seed germination, seedling vigor, plant growth, flowering and harvest yields for legumes, grains, potatoes, vegetables, fruits, trees, sugar beet, and grass. By nature, this homeopathic invention benefits the entire environment by being natural, biodegradable, and by promoting beneficial soil organisms. This new class of agricultural chemistry will ameliorate adverse effects of toxic pesticides through use of the present invention in integrated pest management (IPM) programs.

The invention discloses a rooting-promoting, disease-resistant and plant-strengthening agent for cotton and a water, fertilizer and pesticide integrated application method. The rooting-promoting, disease-resistant and plant-strengthening agent is mainly prepared from a growth regulator, a microelement, a signal molecule donor and an elicitor capable of improving the disease resistance of the cotton, wherein the growth regulator is prepared from indolebutyric acid, sodium nitrophenolate, naphthylacetic acid and diethyl aminoethyl hexanoate through compounding, the microelement is prepared from zinc sulfate, ferrous sulfate, ammonium molybdate, amino acid powder and ammonium hydrogen phosphate through compounding, the signal molecule donor is NO donor sodium nitroprusside, and the elicitor is a penicillium dry mycelium extracting solution. The problems that a drip irrigation technology does no good to root development and severe diseases are caused by successive cropping to the cotton are solved, the growth regulator accelerates growth of root systems, the physiological function time of the root systems is prolonged, the disease-resistant elicitor enhances the resistance of cotton plants, growth of lateral roots is further promoted in combination of the signal molecule donor, and the disease-resistant response of the cotton plant is promoted. The rooting-promoting, disease-resistant and plant-strengthening agent can promote growth of roots and resist diseases in multiple angles; the agent can be injected into irrigation water through a fertilizer pump, integrated application of water, fertilizer and pesticides in the drip irrigation cotton field of the northwest inland is realized, and the agent can promote growth of roots, resist diseases and strengthen seedlings and has remarkable disease resisting and yield increasing effects.

The invention relates to a plant cell culture technology, in particular to a method for biosynthesizing abietane diterpenoid compounds by using cephalotaxus fortune culture cells. The method comprises the following steps of: placing cephalotaxus fortune cells in a common culture medium, and culturing, wherein50 to 150g of the cells are inoculated in each liter of wet weight of the culture medium; and adding an inducer at the final concentration of 10 to 2,000 mu M and 50 to 200g of adsorbent into each liter of culture medium at the initial stage of cell exponential growth, wherein the inducer is an abiological inducer or fungal elicitor. The method is a biosynthesis method and is stable and environment-friendly; and products are completely adsorbed onto the adsorbent, so that the operation process of separation and purification is greatly simplified, the cost is reduced and industrial production is easy to realize. Meanwhile, seven abietane diterpenoid compounds comprising a new compound are synthesized. The abietane diterpenoid compounds have high bioactivity, and are important lead compounds, and the technology has important commercial application prospect.

Disclosed are peptides that induce an active plant response, but not a hypersensitive response, when applied to plant tissue. These peptides also preferably exhibit improved solubility, stability, resistance to chemical degradation, or a combination of these properties. Use of these peptides or fusion polypeptides, or DNA constructs encoding the same, for modulating plant biochemical signaling, imparting disease resistance to plants, enhancing plant growth, imparting tolerance to biotic stress, imparting tolerance and resistance to abiotic stress, imparting desiccation resistance to cuttings removed from ornamental plants, imparting post-harvest disease or post-harvest desiccation resistance to a fruit or vegetable, or enhancing the longevity of fruit or vegetable ripeness are also disclosed.