13 results about "Biotic stress" patented technology

The application belongs to the technical field of molecular plant pathology, and particularly relates to a peanut disease-resistant gene AhNHL24 and application thereof. Through whole genome identification and bioinformatics analysis, 45 NHL family genes (AhNHL) are identified in peanuts, and gene expression analysis shows that most of the AhNHL genes can respond to the induction of biological stress and abiotic stress. Gene disease resistance identification finds that transient overexpression of AhNHL14, AhNHL24 and AhNHL31 can significantly improve the resistance of tobacco and peanuts to Pseudomonas solanacearum, and the disease resistance of AhNHL24 is the strongest. Through transgenic tobacco heterologous overexpression of AhNHL24 and inoculation experiments, it is shown that the peanut and tobacco plants overexpressing AhNHL24 not only have significantly enhanced resistance to Pseudomonas solanacearum, but also have significantly enhanced resistance to Sclerotium rofsii. The application provides an important basis for the cultivation of plant (peanut and tobacco, etc.) broad-spectrum disease-resistant varieties.

This invention discloses an early detection and evaluation method and system for the abiotic stress tolerance of new forest tree germplasm. The method includes: collecting chlorophyll fluorescence indicators, phenotypic indicators, and physiological and biochemical indicators of forest trees under abiotic stress conditions, and performing data cleaning and standardization; performing principal component analysis on the multi-source standardized dataset to screen candidate indicators; performing grey relational analysis using the comprehensive score of forest tree stress tolerance as a reference sequence and the candidate indicators as a comparison sequence; determining the core indicators and their weights based on the variance contribution rate of the principal component analysis and the correlation degree of the grey relational analysis; obtaining the abiotic stress assessment index from the core indicators using a membership function; and classifying the tolerance level of forest tree germplasm using a clustering algorithm based on this index. This invention achieves early, rapid, and accurate evaluation of the abiotic stress tolerance of forest tree germplasm, and can effectively guide forest tree stress resistance breeding work.

Disclosed herein are plant-modifying compositions including a plurality of plant messenger packs (PMPs) (e.g., including a plant extracellular vesicle (EV), or segment, portion, or extract thereof), wherein the PMPs include a plant-modifying agent, and wherein the plant-modifying agent comprising the heterologous RNA. The compositions herein are useful in methods for modifying plants such as to increase plant fitness, wherein the increase in plant fitness comprising an increase in development, growth, yield, resistance to abiotic stressors, or resistance to biotic stressors.

This invention belongs to the field of biological control technology for agricultural diseases, specifically disclosing a method for controlling root rot of Panax notoginseng based on ricinoleic acid. Specifically, this invention provides the application of ricinoleic acid in inhibiting root rot pathogens, wherein the pathogens are... Fusarium oxysporum、Fusarium solani or Ilyonectria vredhoekensis The ricinoleic acid provided by this invention can not only effectively control root rot in Panax notoginseng, but also significantly improve the physiological state of plants under heavy metal and biological stress, and enhance the overall stress resistance and yield of Panax notoginseng. It has outstanding advantages and application potential as a multi-effect, environmentally friendly green plant protection product.

Hypersensitive response eliciting peptides exhibiting improved solubility, stability, resistance to chemical degradation, or a combination of these properties are disclosed. Also disclosed are uses of these peptides or fusion polypeptides or DNA constructs encoding the same for modulating plant biochemical signaling, conferring disease resistance to a plant, enhancing plant growth, conferring tolerance to a plant to a biotic stress, conferring tolerance and resistance to a plant to an abiotic stress, conferring desiccation resistance to a cutting taken from an ornamental plant, conferring postharvest disease resistance or postharvest desiccation resistance to a fruit or vegetable, or enhancing the postharvest life of a fruit or vegetable.

The application belongs to the technical field of plant genetic engineering, and particularly relates to application of LOC_Os01g34560 gene and coded protein thereof in breeding high-temperature-resistant rice; the gene and the coded protein thereof are involved in high-temperature non-biological stress regulation in the flowering stage of rice, and affect the rice yield by affecting the seed setting rate; LOC_Os01g34560 is edited by using a conventional method, so as to change the expression level of the gene, and then new rice germplasm with different expression levels of LOC_Os01g34560 gene is obtained; the rice created by the application has no significant difference in the growth and development of plants and other agronomic characters compared with the parent control, but significantly affects the seed setting rate under high-temperature non-biological stress; the application provides a useful gene resource for genetic improvement of sterile lines, and has important breeding utilization value.

The application belongs to the field of agricultural microorganism technology, and discloses a bacillus strain and application of the bacillus strain in promoting growth of tomatoes and inhibiting fusarium oxysporum. Bacillus pseudomycoides ) SYSU BS000486, which is preserved in the China General Microbiological Culture Collection Center and has a preservation number of CGMCC No. 36880. The bacillus mycoides has obvious antagonistic effect on fusarium oxysporum, can significantly reduce the disease incidence of tomato diseases caused by fusarium oxysporum, and effectively relieves the biological stress of tomato plants caused by infection of fusarium oxysporum. Meanwhile, the bacillus mycoides can promote the growth of plants, so that the stem length and aboveground biomass of the plants are significantly increased. The bacillus mycoides has wide application prospect in the fields of agricultural microbial agent research and development, biological control of crops and green yield increase.

The present invention relates to compositions and methods for increasing tolerance to abiotic stress and / or reducing the consequences of abiotic stress in a plant and / or part thereof. In some aspects, the method comprises contacting a plant and / or part thereof with a first composition comprising one or more of aminoguanidine, L-nitroarginine, L-nitroarginine methyl ester, 2,2'-bipyridine, 4-methylpyrazole, 8-hydroxyquiniline, caprylic acid, pyrazole, naringenin, kaempferol, quercetin, dodecanoic acid, and / or undecanoic acid, and / or one of their salts; and a second composition comprising at least one dicarboxylic acid and / or one of its salts.

The present invention relates to methods of improving plant growth, development and / or resistance to abiotic / biotic stress.

The present invention relates to a plant biostimulant composition comprising: (i) a seaweed, (ii) at least one biostimulant, (iii) at least one surfactant, and (iv) at least one co-formulant, wherein said composition has a pH greater than approximately 9. Optionally, the composition further comprises at least one carrier and / or agriculturally acceptable additives, such as chelating agents and / or rheology aids. The present invention further relates to methods and uses for applying the plant biostimulant composition by soaking to mitigate abiotic stress or to manage crop productivity.

The present disclosure provides compositions, kits, and systems comprising engineered bacteria and agricultural biologicals, and methods of use thereof to treat a plant and improve one or more plant beneficial traits, such as plant yield, nutrient uptake, and resistance to an abiotic or biotic stress. Use of the compositions, kits, and systems disclosed herein may further 5 decrease usage of fertilizers. The disclosure further teaches methods of using engineered bacteria with agricultural biologicals to treat a plant.

The present application relates to natural system simulation technical field, specifically to a mountain park ecological restoration digital twin method and system, in the present application, by constructing multi-directional elevation profile sequence and calculating micro-landform fractal dimension, combining with ellipse fitting technology to generate roughness tensor matrix, accurately quantifying the structural difference of micro-landform in different directions, using water flow velocity vector projection in roughness tensor to analyze equivalent fractal dimension, realizing accurate calculation of surface runoff resistance coefficient dynamic response with flow direction, thereby significantly improving the solving accuracy of hydrodynamic equation under complex terrain, at the same time, introducing environmental biological stress intensity index, based on spatial Euclidean distance as distance attenuation factor and interspecific competition coefficient weighted summation, deeply coupling physical habitat hydrodynamic condition and biological community interspecific competition mechanism, using biological stress correction state transition probability, realizing dynamic prediction of vegetation community succession path.

This invention belongs to the field of plant genetic engineering technology, specifically disclosing the application of the eggplant SmERF114 gene. This invention identifies that SmERF114 can directly bind to the SmDDA1b promoter region. Furthermore, SmERF114 not only participates in eggplant plant resistance to bacterial wilt through the SA signaling pathway of the SmDDA1b pathway, but may also participate in eggplant plant resistance to bacterial wilt through the Eth and ABA signaling pathways. Gene silencing experiments of SmERF114 confirm that SmERF114 positively regulates eggplant resistance to bacterial wilt. Transient overexpression results of SmERF114 further indicate that SmERF114 is a positive regulator in the process of eggplant plant resistance to bacterial wilt. These findings demonstrate that this gene can be applied to improve the plant's resistance mechanism to bacterial wilt, providing a scientific basis for its application in plant resistance to abiotic or biotic stresses.