32 results about "Salinity stress" patented technology

The invention relates to a sorbitol dehydrogenase gene derived from haloarcula marismortui and applications thereof. The sorbitol dehydrogenase gene is synthesized by a manual method. The nucleotide sequence of the gene is shown as SEQ ID NO 1. The coded amino acid sequence is shown as SEQ ID NO2. Results of arabidopsis thaliana transformation by utilization of the sorbitol dehydrogenase gene by adopting an agrobacterium floral-dip method show that: the sorbitol dehydrogenase gene can successfully improve the salt tolerance performance of transgenic arabidopsis thaliana, so that the sorbitol dehydrogenase gene can be widely applied in plants under high-salinity stress.

A device for fast realization of shortcut biological denitrification through salinity inhibition combined with fuzzy control and methods thereof pertain to the technical field of sewage biological denitrification of SBR method and are suitable for sewage disposal in nitrogen-containing industry and advanced treatment of town sewage. The invention adjusts the mass concentration of crude salt of inlet water in 5-7.5 g / L (Cond value is 8.92-12.95 mc / cm) to quick realize the accumulation of nitrite in normal temperature above 90 percent by adding crude salt of a certain concentration (the crude salt is obtained directly by basking seawater without any processing) and combining with controlling the time of nitrification and denitrification in real time, the method is designed to solve the problems of long starting time of the existing shortcut biological denitrification technology and difficulty to maintain. The method can not only fast realize the accumulation of nitrite in high proportion stably in reaction system to enable the nitrating types to be fast and long-time stabilized on shortcut nitrification, but also has the advantages of low cost, flexibility in operation and management and seldom causing sludge bulge, etc.

The embodiments of the present invention provide a method and device for detecting the degree of saline-alkali stress in plants. The method includes: acquiring near-infrared spectrum data of the plant to be detected; performing feature extraction on multiple characteristic wavelengths in the near-infrared spectrum data to obtain each characteristic data of each characteristic wavelength; input the characteristic data of each characteristic wavelength into a preset radial basis neural network model, and determine the degree of saline-alkali stress of the plant to be detected according to the output result of the radial basis neural network model ; Wherein, the radial basis neural network model is obtained after training based on the near-infrared spectrum data samples labeled as the known degree of saline-alkali stress. Compared with the current method, this method does not require excessive measuring equipment, and only needs to obtain near-infrared spectral data, so that the canopy leaves will not be damaged. At the same time, through the trained neural network, the degree of saline-alkali stress can be detected simply, efficiently and accurately.

The present invention provides a screening method for selecting plant symbiotic microorganisms enabling plant growth under abiotic stress and / or biotic stress, a microbial mixture of microorganisms which are selected from nature by the method and enables a plant to grow under salinity stress and / or hyperosmotic stress in symbiosis with the plant. Specifically, the present invention provides a screening method for selecting plant symbiotic microorganisms, comprising a first screening step of allowing at least one plant to grow for a predetermined period of time while being partially soaked in a solution containing a microbial mixture under abiotic stress and / or biotic stress, and collecting microorganisms adhering to grown plant to thereby select out the microorganisms as plant symbiotic microorganisms enabling plant growth under the stress.

The invention discloses a rhizosphere growth-promoting bacterium for enhancing the salt-tolerant ability of crops, microbial fertilizer and application thereof. The Bacillus paralicheniformis T1-8 provided by the present invention has a preservation number of CGMCC No.17335. The bacterial strain is inoculated in potted corn and wheat rhizosphere, and can improve the growth indexes of corn and wheat under salt stress. The fermented bacterial liquid is uniformly mixed with common cow dung, pig manure, straw, and composted, and then secondarily fermented to produce a microbial organic fertilizer. The microbial organic fertilizer can increase corn yields in saline-alkali land and improve soil physical and chemical properties to a certain extent. The invention has great significance for the development of functional microbial organic fertilizers (enhancing crops tolerance to salt stress, improving crop yield in saline-alkali land).

The present invention provides a MAP kinase homologue gene, designated EhHOG, isolated from Eurotium herbariorum, a common fungal species from the extreme hypersaline environment of the Dead Sea, capable of improving tolerance of plants and other organisms to abiotic stresses such as osmotic, heat, dehydration, freezing-thawing, oxidative and salinity stress.

A salt-resistant preparation for improving the salt resistance of the wheat and an application method thereof belong to the technical field of improving the salt resistance of the wheat to increase the wheat production. The method comprises the following steps: 1) soaking the salt resistance preparation, wherein, with the overall weight being 1kg , the final composite ingredients are 3-4g of Ca (NO3)2, 1.2-1.5g of KH2PO4, 1.5-2g of KI, 0.35g of MnSO4, 10mg of Na2SeO3, 40-60mg of cytokinin, and the balance water; 2) spraying the salt resistant preparation on the surfaces of leaves, wherein, with the overall weight being 1kg, the final composite ingredients are 1-1.2g of Ca (NO3)2, 0.25-0.3g of KH2PO4, 0.35g of KI, 0.1g of MnSO4, 2mg of Na2SeO3, 2-10mg of cytokinin, and the balance water. Wheat seeds are soaked in the salt resistant preparation once before being planted, and the salt resistant preparation is sprayed on the surfaces of the leaves after fifteen days from the wheat seedlings turn green in the spring of the next year. The invention has the advantages of significantly improving the ratio of emergence of wheat seeds under high salinity stress, promoting the growth of wheat plants, increasing the production of the wheat by 15-20 percent, and being suitable for the soil with salt contents being 0.3 percent.