60 results about "Biotic stress" patented technology

The invention relates to the technical field of marine ecological environment monitoring, in particular to a marine ecological environment assessment early warning system based on big data and AI, which comprises a multi-source data fusion module, a dynamic feature extraction module, a meteorological disturbance coefficient calculation module, an ecological index generation module and a coupling early warning generation module. Wherein the multi-source data fusion module is used for collecting multi-source data in real time; the dynamic feature extraction module is used for extracting 72-hour change gradients of the three types of core parameters; the meteorological disturbance coefficient calculation module is used for calculating and outputting a meteorological disturbance coefficient; the ecological index generation module is used for generating a water quality deterioration index and a biological stress index; and the coupling early warning generation module is used for outputting an ecological risk level signal. According to the method, meteorological interference is reduced in real time, water quality deterioration and biological stress indexes are subjected to weighted fusion, the marine ecological environment risk is accurately evaluated, and scientific support is provided for ecological protection and pollution early warning.

The invention belongs to the technical field of plant genetic engineering and molecular breeding, and particularly relates to application of a soybean GmUGT72E1 gene in regulation and control of soybean plant height and enhancement of resistance of soybeans to drought and alkali stress. Plant height is a key agronomic character influencing lodging resistance and photosynthetic efficiency of soybeans, drought and alkali stress are core abiotic stress factors restricting yield and quality of the soybeans, and the three factors jointly lead to remarkable global soybean yield reduction loss. Gene cloning, vector construction and transgenic function verification prove that overexpression of the GmUGT72E1 gene can reduce the plant height of soybeans by 15%-25%, meanwhile, the tolerance of the soybeans to drought and alkali stress is remarkably improved, the relative water content of leaves under the drought stress is increased by 25%-30% compared with that of wild type leaves, and chlorophyll under the alkali stress is increased by 40%-50% compared with that of the wild type leaves. According to the application disclosed by the invention, the dual regulation and control functions of the GmUGT72E1 gene are defined, key gene resources and technical support are provided for soybean dwarf stress-resistant collaborative improvement, dwarf stress-resistant soybean varieties can be cultivated by means of transgenosis, gene editing and the like, and the application has important agricultural application value.

The present invention relates to a method of preventing or alleviating the effect of abiotic stress in a plant, which involves applying to the plant, including plant seeds or to a plant growth medium, an effective amount of phenylalanine and / or any salt or solvate thereof and a seaweed extract.

Provided herein are compositions and methods to improve plant resistance to abiotic and biotic stress, thereby improving crop yield. Provided herein are compositions including zinc, copper, and an acid, where the acid is selected from citric acid, sulfuric acid, oxalic acid, humic acid, fulvic acid, boric acid, acetic acid, and a combination thereof. Certain embodiments optionally include ammonium sulfate. Compositions described herein have plant priming activity where the plant's defenses against abiotic and biotic stress are boosted.

Disclosed herein is a method of using resin acids as defense gene inducers for biotic stress in a plant. Also disclosed herein are a composition including rosin and a method of using the composition as a defense gene inducer for biotic stress in a plant.

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.

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

The present application relates to the technical field of marine ecological environment monitoring, and particularly relates to a marine ecological environment assessment and early warning system based on big data and AI, comprising a multi-source data fusion module, a dynamic feature extraction module, a meteorological disturbance coefficient calculation module, an ecological index generation module and a coupling early warning generation module; wherein: the multi-source data fusion module is used for real-time collection of multi-source data; the dynamic feature extraction module is used for extraction of 72-hour change gradients of three types of core parameters; the meteorological disturbance coefficient calculation module is used for calculation and output of meteorological disturbance coefficients; the ecological index generation module is used for generation of water quality deterioration indexes and biological stress indexes; and the coupling early warning generation module is used for output of ecological risk grade signals. Through real-time reduction of meteorological interference and weighted fusion of water quality deterioration and biological stress indexes, the present application can accurately assess marine ecological environment risks and provide scientific support for ecological protection and pollution early warning.

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

Provided is an agent for improving abiotic stress tolerance in a plant, said agent being capable of further improving the effect of improving abiotic stress tolerance using a compound such as ergothioneine. The agent for improving abiotic stress tolerance of plants according to the present invention comprises: a first component that is a compound represented by formula (I), a tautomer thereof, or an agronomically acceptable salt thereof; and at least one second component selected from the group consisting of an amino acid, a peptide having a length of 2-10 amino acids, a betaine, an organic acid or a salt thereof, a nucleic acid base, a vitamin, and a sugar or a sugar alcohol. (In formula (I), R1 and R2 independently represent a hydrogen atom or an alkyl group having 1-4 carbon atoms, and R3, R4, and R5 independently represent an alkyl group having 1-4 carbon atoms)

The invention discloses application of a nifU2 gene in inhibition of plant cell ferroptosis, and belongs to the technical field of gene engineering. The invention provides an effect of a plant iron-sulfur cluster transporter nifU2 in regulation and control of plant iron-sulfur clusters, and solves the problem of the effect of the plant iron-sulfur cluster transporter in ferroptosis in the prior art. The nifU2 participates in the process of plant ferroptosis, and participates in plant antiviral response by inhibiting ferroptosis. According to the application, nifU2 is identified as a regulatory factor of ferroptosis in plant cells for the first time, and subsequent exploration of ferroptosis related host factors and regulatory mechanisms thereof under other biological stress conditions is facilitated.

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.

This disclosure relates to alloploidy plants and hybrid alloploidy plants having desirable properties such as resistance to abiotic or biological stressors, which can be used as rootstock for cultivated tomato varieties. This disclosure further relates to composite plants that include the alloploidy plants described herein as rootstock. This disclosure further relates to methods for producing alloploidy plants and plant parts, as well as hybrid alloploidy plants and plant parts. In some embodiments, the techniques described herein relate to methods for producing unnatural stress-tolerant composite tomato plants, comprising providing a stress-tolerant allotetraploid tomato plant as rootstock, providing a Solanum lycopersicum variety as scion, grafting the scion onto the rootstock, thereby producing an unnatural stress-tolerant composite tomato plant.

The invention discloses an application of corn E3 ubiquitinase in enhancing the resistance of corn to corn stem rot and drought. The name of the corn E3 ubiquitinating enzyme is ZmWIPF2, and the corn E3 ubiquitinating enzyme is shown as a sequence 2 in a sequence table. When the corn is subjected to abiotic stress such as drought and biological stress such as stem rot, the ZmWIPF2 cooperates with related genes to regulate and control the corn to resist the stem rot and drought and respond to pathogenic bacterium infection and drought stress. The ZmWIPF2 gene contains a zinc finger structural domain and an RING-H2 structural domain, wherein RING-Ubox is an E3 ubiquitin ligase. Transgenic material verification proves that the gene can improve the stress resistance of corn, has important significance for breeding stress-resistant corn varieties, and is suitable for wide popularization.

The present disclosure relates to Cucurbitaceae allotetraploid plants and hybrid allopolyploid plants having desirable traits, such as resistance to an abiotic or biotic stressor, which may be used as rootstock for cultivated varieties. The disclosure further relates to composite Cucurbitaceae plants comprising the allopoly ploid plants described herein as the rootstock. The disclosure further relates to methods of producing Cucurbitaceae allopolyploid plants and hybrid allopolyploid plants.

The invention belongs to the technical field of genetic engineering breeding, and discloses a wheat disease-resistant factor gene TaPsaF and application thereof. A TaPsaF gene sequence is analyzed, and a TaPsaF-GFP fusion protein is constructed, so that the localization of the TaPsaF-GFP fusion protein in cell chloroplast is determined. An overexpression and silence vector of the TaPsaF gene is successfully constructed by using a gene engineering technology, and wheat is transformed by using an agrobacterium-mediated method to obtain a transgenic wheat material. Functional verification shows that over-expression of the TaPsaF gene can significantly enhance the resistance of wheat to stripe rust, and silencing of the gene leads to reduction of the resistance. Gene resources and a technical path are provided for wheat stripe rust resistance molecular breeding, the blank of the TaPsaF protein in biological stress response mechanism research is filled up, and the TaPsaF protein has important significance for guaranteeing food safety.

The invention relates to aromatic carboxylic acid ionic derivatives, wherein anion is represented by a general formula (I) or (II), and cation is selected from cation M+ and a cation of general formula (III), wherein the formulae (I), (II) and (III) are defined in the description, for use as a plant stimulant in plant growth regulation and / or in regulation of plant metabolic processes, and also—in case of ionic derivatives, wherein the anion is defined by the general formula (II)—for preventing the effects of biotic stress caused by the activity of viruses, bacteria and / or fungi. The invention also relates to a plant stimulation method and use of aromatic carboxylic acid ionic derivatives as active compounds for the production of compositions for stimulating plants by regulating their growth and / or metabolic processes, and in case of derivatives, wherein the anion is defined by the general formula (II)—also for preventing the effects of biotic stress caused by the activity of viruses, bacteria and / or fungi.

Drought is one of the biggest problems in the world. Drought in agricultural production soils also increases the salinity of the soil. The plant is more than one abiotic in natüre encounters stress. In this process, if the plant reacts to the antioxidant enzymes and survives, it is called a resistant plant. The enzyme response is insufficient and the increase in the level of TBARS causes plant deaths. This invention organic fertilizer strengthens the plant antioxidant enzyme and protects the plant against drought and salt stress.

Aromatic alkyl carboxylic acids and ester derivatives thereof useful for promoting plant growth, yield, and protect against abiotic and biotic stresses. The present invention relates to the use of aromatic alkyl carboxylic acids and ester derivatives thereof, or an agriculturally acceptable salt thereof, to increase growth and / or yield of a plant, at any developmental stage, as compared to the non-treated plant of the same species and at the same developmental stage. It also relates to the use of the compound to further increase in the adaptability of the plant to biotic and abiotic stresses.

The present invention relates to a composition comprising (i) seaweed, (ii) oil, and (iii) at least two surfactants wherein the pH of the composition ranges from about 3 to about 6. Optionally, the composition further comprises at least one agriculturally acceptable carrier and / or additive, such as a chelating agent and / or a rheological aid. The invention also relates to a method and use of seed treatment of a plant biostimulant composition for mitigating abiotic stress or managing crop productivity.

The invention relates to a method for improving abiotic stress resistance of rice and the rice, and belongs to the technical field of biological gene engineering. According to the method for improving the abiotic stress resistance of the rice, an upstream open reading frame sequence SEQ ID NO.1 of a GGP gene of the rice is modified, so that the rice is resistant to salt stress. According to the invention, a conservative open reading frame (uORF) influencing the translation efficiency of the L-galactose synthesis key gene GGP upstream of the rice vitamin C is identified, and the function of the L-galactose synthesis key gene GGP is determined through a dual-luciferase reporter vector. GGPuORF of the rice is knocked out through a CRISPR / Cas9 technology, and the rice which is remarkably improved in the aspects of abiotic stress resistance such as saline-alkaline tolerance and the like is created.

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.

The present disclosure relates to eggplant and pepper allotetraploid plants and hybrid allopolyploid plants having desirable traits, such as resistance to an abiotic or biotic stressor, which may be used as rootstock for cultivated varieties. The disclosure further relates to composite eggplants and pepper plants comprising the allopolyploid plants described herein as the rootstock. The disclosure further relates to methods of producing eggplant and pepper allopolyploid plants and hybrid allopolyploid plants.

The invention 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 totally identified in peanuts, and gene expression analysis shows that most AhNHL genes can respond to induction of biological stress and abiotic stress. The gene disease resistance identification finds that the instantaneous overexpression of AhNHL14, AhNHL24 and AhNHL31 can significantly improve the resistance of tobacco and peanut to ralstonia solanacearum, and the disease resistance of AhNHL24 is the strongest. The transgenic tobacco heterologous overexpression AhNHL24 and inoculation experiments show that not only is the resistance of peanut and tobacco plants for overexpression AhNHL24 obviously enhanced to ralstonia solanacearum, but also the resistance to sclerotium rolfsii is also obviously enhanced. The invention provides an important basis for cultivation of broad-spectrum disease-resistant varieties of plants (peanuts, tobaccos and the like).

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 invention discloses a method for preventing and controlling maize chlorotic mottle virus by using an anti-disease gene ZmCDPK7 and application of the anti-disease gene ZmCDPK7, and belongs to the technical field of plant protection. According to the application, through instantaneous silencing of the ZmCDPK7, an overexpression and knockout line of the ZmCDPK7 is constructed, the resistance reaction of the overexpression and knockout line to maize chlorotic mottle virus infection is analyzed, and it is proved that the ZmCDPK7 positively regulates the immunity of maize to the MCMV. In order to further clarify the molecular mechanism of the ZmCDPK7 for regulating and controlling immunity, interaction between the ZmCDPK7 and a key pathogenic factor P31 of the MCMV is discovered and proved through technologies such as yeast two-hybridization and bimolecular fluorescence complementation. ROS detection proves that the ROS content of the ZmCDPK7 knockout strain is higher than that of a wild type after MCMV infection. In biological and abiotic stress reactions, the resistance of the ZmCDPK7 knockout strain to biological and abiotic stress is proved to be reduced.

The invention relates to the technical field of genes, and particularly discloses a Dendrobium sphaeroides DhCOR413PM1 gene, which is characterized in that the nucleotide sequence of the Dendrobium sphaeroides DhCOR413PM1 gene is as shown in SEQ ID NO: 1, or the Dendrobium sphaeroides DhCOR413PM1 gene encodes a protein with the same function and has a nucleotide sequence which has at least more than 90% of sequence identity with SEQ ID NO: 2; according to the invention, the cold response protein gene DhCOR413PM1 is identified and separated from dendrobium nobile, the gene, as a specific COR413 family member of a plant, shows a remarkable up-regulation expression characteristic under the stress of low temperature, drought and salt, and the encoding protein of the gene is positioned in plasma membrane, has a conservative transmembrane structural domain and functional domain, and can be used for preparing the cold response protein gene DhCOR413PM1. The gene is a key regulatory factor for plants to respond to multiple abiotic stress.

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

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.