16 results about "Diseases plants" patented technology

The invention relates to the technical field of image or video recognition or understanding, and discloses an areca yellows early warning method based on regular economic forest multi-dimensional symptom analysis, in the method, the unique morphology of areca and various morphological changes which are invisible under trees but visible in remote sensing during the period that areca suffers from yellows are fully utilized, and the areca yellows early warning effect is achieved. And the multiple symptoms are combined to form a multi-symptom matching degree, so that the misrecognition problem can be eliminated in an auxiliary manner when specific symptoms exist. When the specific symptoms do not exist, whether the disease of the current areca-nut forest belongs to the infectious disease or not is indirectly judged according to the distribution characteristics of the multi-symptom matching degree in time and space by utilizing the distribution characteristics and the disease course development rule when the areca-nut is cultivated as an economic arbor, and if yes, the disease of the current areca-nut forest belongs to the infectious disease; and considering that the areca yellows occupy a large proportion in the areca infectious diseases, the pathogen detection cannot be infeasible due to entrainment of a large number of irrelevant diseased plant samples when the pathogen detection is carried out at the moment. The above points are combined to realize early warning of areca yellows.

This invention belongs to the field of biodetection technology, specifically relating to a primer set, kit, and application for detecting *Alternaria solani* brown spot disease. The base sequences of the primer set are shown in SEQ ID NO.1~SEQ ID NO.5. Based on the primer set, this invention utilizes loop-mediated isothermal amplification technology for the rapid detection of *Alternaria solani*, accurately detecting the fungus from the complex pathogenic environment in diseased plant tissues. The rapid detection system described in this invention exhibits high specificity and sensitivity, with a detection limit of 0.246 fg / μL for *Alternaria solani* DNA. Using the rapid detection system provided by this invention, *Alternaria solani* can be detected rapidly, conveniently, accurately, and sensitively from field samples within 45 minutes, which is simpler and more efficient than traditional symptom identification methods and ordinary molecular detection methods.

The invention belongs to the technical field of biological detection, and particularly relates to a primer group and a kit for detecting new plum brown spot and application of the primer group and the kit, and base sequences of the primer group are shown as SEQ ID NO.1-SEQ ID NO.5. Based on the primer group, the loop-mediated isothermal amplification technology is used for rapid detection of the alternaria nepalensis, and the alternaria nepalensis can be accurately detected from a complex pathogenic bacterium environment in diseased plant tissues. The rapid detection system disclosed by the invention is good in specificity and high in sensitivity, and the detection limit of the DNA of the alternaria nepalensis is 0.246 fg / mu L. By utilizing the rapid detection system provided by the invention, the alternaria nepalensis can be rapidly, simply, accurately and sensitively detected from a field sample within 45 minutes, and compared with a traditional symptom recognition method and a common molecular detection method, the rapid detection system is simpler and more efficient.

The application discloses long-chain non-coding RNA lncRNA109897 for promoting walnut resistance to anthracnose and application thereof. The application provides an RNA molecule, which is a lncRNA and is named as LncRNA109897, as shown in sequence 1 of a sequence table. The application also provides a DNA molecule, which is a DNA molecule for coding LncRNA109897 and is named as LncRNA109897 gene, as shown in sequence 3 of the sequence table. The application also protects an anti-disease plant breeding method, which comprises the following steps: introducing the LncRNA109897 gene into a starting plant to obtain a transgenic plant with higher disease resistance than the starting plant. The application has great application and popularization value for plant anthracnose resistance breeding, in particular, walnut anthracnose resistance breeding.

The application discloses a primer composition for detecting Pythium sylvesterianum based on LAMP technology and application thereof, and belongs to the technical field of microorganism detection; the primer composition is a LAMP primer composition designed according to a specific sequence shown in SEQ ID NO. 1. The application adopts a method for rapidly detecting Pythium sylvesterianum, the pathogenic bacterium of stem base rot of raw ginger, based on loop-mediated isothermal amplification technology, and establishes a perfect detection and field real-time detection system for soil samples, water source samples and diseased plant samples, thereby opening up a new train of thought and method for the measurement and prediction of field crop diseases, winning valuable time for the prevention and control of related diseases, and reducing the loss caused by diseases to a certain extent.

The present application belongs to the technical field of fruit tree disease prevention and control, and particularly relates to a method for removing sporadic citrus Huanglongbing trees in citrus orchards. According to the epidemiological characteristics of citrus Huanglongbing, the control strategy of 'completely removing diseased plants, strictly preventing and controlling citrus psyllids, and comprehensively preventing and controlling' is implemented at sporadic disease points in the diffusion front area. The sporadic disease point orchards are promptly cleaned of diseased trees, and the diffusion front area is comprehensively prevented and controlled to prevent the disease from occurring again. In this way, disease information and risk warnings can be promptly released, the removal of diseased trees and the strict prevention and control of citrus psyllids can be achieved, the invasion and reproduction of exogenous psyllids can be hindered, the risk of healthy seedlings getting sick can be reduced, and the spread of citrus Huanglongbing can be blocked. The present application provides technical support for delaying the further spread of citrus Huanglongbing and saves human and material resources.

The present disclosure relates generally to a composition comprising nucleic acids adsorbed onto layered double hydroxide (LDH) nanoparticles coated in positively charged proteins, and methods of introducing the adsorbed nucleic acids into plants and plant tissues using the composition. For example, the LDH nanoparticles of the present disclosure can be used to deliver a nucleic acid of interest to a plant or part thereof for a range of purposes including, but not limited to, protecting plants from pests and diseases, plant trait manipulation, and / or plant gene editing. The present disclosure also generally relates to the use of lysozyme for enhancing uptake and internalization of LDH nanoparticles by plants and plant tissues. For example, the present disclosure relates to methods of enhancing uptake and internalization of a plant or plant tissue with LDH nanoparticles by pre-treating the plant or plant tissue with lysozyme prior to incubating the plant or plant tissue with the LDH nanoparticles. The present disclosure also relates to a method for preparing the composition.

This invention relates to the field of plant disease control technology, and in particular to the application of dihydroxyacetone (DHA) in the control of root rot and / or the promotion of plant growth. This invention found that DHA can effectively antagonize the growth of the pathogen *Fusarium graminearum*, with an inhibition rate of 36.14%–48.65%. In soil culture experiments, at 7 days, both high concentrations (1M) and low concentrations (5mM) of DHA showed good control effects on maize root rot, with disease control efficacy reaching 14.17% and 27.08%, respectively. Simultaneously, both showed good growth-promoting effects; low concentrations of DHA increased the aboveground biomass of maize by 65.30% compared to diseased plants. At 14 days, the control efficacy of high concentrations (1M) and low concentrations (5mM) of DHA against maize root rot was 15.24% and 33.05%, respectively, and low concentrations of DHA increased the aboveground biomass of maize by 135.32% compared to diseased plants.

The invention belongs to the technical field of biology, and particularly relates to a bacillus amyloliquefaciens strain sf28 and application thereof. The bacillus amyloliquefaciens strain sf28 is separated from rhizosphere soil of a peanut southern blight diseased plant, and the bacillus amyloliquefaciens strain sf28 has the effects of resisting fungi and bacteria and can effectively prevent and treat various plant diseases; comprise peanut bacterial wilt, peanut southern blight, peanut fruit rot, peanut root rot, peanut crown rot, ligustrum lucidum canker and tobacco root rot, and the potting test control effect on the peanut southern blight and the peanut bacterial wilt is remarkable.

The invention belongs to the technical field of microorganisms, and discloses an African trichoderma harzianum strain and application thereof in inhibition of a fusarium graminearum source. The African trichoderma harzianum is separated from wheat field soil, the strain number of the African trichoderma harzianum is XY8-4, and the preservation number of the African trichoderma harzianum is CGMCC (China General Microbiological Culture Collection Center) No.41512. The strain can inhibit the growth of fusarium graminearum hyphae and the generation and germination of conidia, has a hyperparasitism effect, can also significantly inhibit the fusarium graminearum from forming ascocysts on sick residues, reduces the number of initial infection sources, can be applied to preparation of a wheat scab biocontrol agent, and has a broad application prospect. Microbial resources and technical approaches are provided for reducing the use of chemical pesticides and realizing green prevention and control of the gibberellic disease.

The invention discloses a colza sclerotiniose clubroot resistance evaluation method, and relates to the technical field of stress-resistant colza screening and evaluation. Comprising the following steps: 8-10 days after rape seedling emergence, diluting the plasmodiophora brassicae spore concentration to 2 * 10 < 6 > / mL to 3 * 10 < 6 > / mL by using sterile water, then mixing a plasmodiophora brassicae spore suspension and a sclerotinia sclerotiorum hypha suspension in equal proportion, and enabling the bacterial suspension liquid to slowly flow down along plant stems and be immersed into root soil along the positions 0.5-1 cm away from the basal parts of rape plant stems; the method comprises the following steps of: culturing at the constant temperature of 25 DEG C and the relative humidity of more than 90% in the presence of light for 16 hours and darkness for 8 hours alternately, observing the symptoms of roots, basal stems or petioles after 30 days, carrying out disease grading of the clubroot and the sclerotiniose, then calculating disease indexes according to the grading and the number of diseased plants at each stage, and further evaluating the resistance grades of the sclerotiniose and the clubroot according to the disease indexes. According to the evaluation method disclosed by the invention, disease occurrence conditions can be created under indoor conditions, so that sclerotinia sclerotiorum and plasmodiophora brassicae infect hosts at the same time, the evaluation time can be shortened, and meanwhile, the defect that the resistance evaluation of different diseases in different growth periods of the rape cannot truly reflect the resistance level of the hosts is overcome.

This invention provides a method, system, device, and storage medium for diagnosing diseased plants and detecting missing plants, relating to the field of diseased plant diagnosis and missing plant detection. The method includes: acquiring target images of plants within a target area and generating target orthophotos based on the target images; dividing the target orthophotos into multiple target window images using a set sliding window; inputting the multiple target window images into a detection model to obtain detection information corresponding to each target window image; the detection information includes: the geographical location of the plant and the disease severity level of the plant; when the disease severity level is zero, it indicates a missing plant; the detection model is established using machine learning methods; this invention can quickly and accurately detect plants.

The application relates to the technical field of data processing, and discloses a peanut anti-rhizoctonia solani breeding strategy analysis method and system based on a growth cycle. The method comprises the following steps: collecting and analyzing peanut growth period characteristic data to obtain a growth cycle characteristic database; comparing phenotypes of healthy plants and diseased plants to establish an anti-rhizoctonia solani early warning model; performing real-time monitoring according to the early warning model to obtain a risk early warning result; tracking the growth period based on the early warning result to establish an anti-rhizoctonia solani resistance scoring system; obtaining strain stability parameters through environmental response analysis; and finally determining excellent strains and forming an anti-rhizoctonia solani breeding scheme. Through the establishment of a data monitoring and analysis system for the whole growth period, dynamic evaluation and early warning of the anti-rhizoctonia solani performance of plants are realized, and the accuracy and efficiency of the selection and breeding of anti-rhizoctonia solani varieties are improved.

The invention discloses a rice deubiquitination enzyme gene OsZUFSP as well as cloning and application of the rice deubiquitination enzyme gene OsZUFSP. The OsZUFSP is a deubiquitination enzyme gene separated from rice, is composed of 1245 basic groups, and encodes a ZUFSP type deubiquitination enzyme with the molecular weight of 46 kDa and positioned in a cell nucleus and cytoplasm, namely the OsZUFSP. The OsZUFSP participates in the rice ubiquitination removal process and responds to the biological stress response of southern rice black-streaked dwarf virus invasion. The phenotypes of mutant rice with the OsZUFSP gene knocked out and over-expressed transgenic rice are not obviously different from those of wild rice, but the resistance of the mutant rice with the OsZUFSP gene knocked out to the southern rice black-streaked dwarf virus is enhanced, the symptoms of diseased plants are relieved, the susceptibility of the transgenic rice with the OsZUFSP gene over-expressed to the southern rice black-streaked dwarf virus is enhanced, and the resistance of the mutant rice with the OsZUFSP gene knocked out to the southern rice black-streaked dwarf virus is reduced. The symptom of the diseased plant is aggravated, which indicates that the OsZUFSP gene positively regulates and controls the southern rice black-streaked dwarf virus to infect rice Therefore, the gene can be knocked out through a gene editing technology to improve the resistance of the rice to the southern rice black-streaked dwarf virus.

The invention discloses a fluorescent quantitative PCR (Polymerase Chain Reaction) primer group, a kit and a method for detecting tomato neck and root rot germs and application. Belongs to the technical field of gene detection. Sequence homology comparison is carried out on the tomato neck and root rot pathogen and other fusarium oxysporum genomes, a specific site for detecting the tomato neck and root rot pathogen is determined, and the sequence is as shown in SEQ ID NO.19. The site is further utilized to design an amplification primer group, a kit and a detection method, a real-time fluorescent quantitative PCR detection system of the FORL is established, the system is good in specificity, high in sensitivity, strong in repeatability and high in accuracy, can detect genome DNA of the tomato neck and root rot bacteria, the sensitivity is 16.4 pg / mu L, the quantity of the bacteria in infected plants can be rapidly and accurately identified, and the method is suitable for popularization and application. And a scientific basis is provided for early prevention and treatment of tomato neck and root rot.

This invention relates to molecular diagnostic tools for C. fimbriata to monitor and manage the pathogen in sweetpotato and other crop and forest systems where C. fimbriata can cause significant disease issues. Provided herein are methods to quickly detect and identify C. fimbriata in soil, wash water, diseased plants, or other complex samples.