8 results about "Guard cell" patented technology

The invention discloses a mask scavenging valve with a bionic guard cell opening and closing function, which comprises an outer breathable waterproof layer, a middle breathable switch layer and an inner breathable water-absorbing layer, the outer breathable waterproof layer is fixedly connected with the edge of the inner breathable water-absorbing layer, and the middle breathable switch layer is arranged between the outer breathable waterproof layer and the inner breathable water-absorbing layer; a valve cavity is formed in the middle ventilation switch layer, a valve port is formed in the middle of the valve cavity, a supporting ring is fixed in the valve port, at least two positions of the side edges of the supporting ring are fixed to the inner wall of the valve cavity through elastic separation layers, and a water suction valve element is arranged in the valve cavity. The expansion and contraction change of the water suction valve element drags the supporting ring to control opening and closing of the valve port. The mask has the advantages that the mask is constructed according to the opening and closing function principle of bionic plant guard cells, the water absorption valve element expands and contracts in the process of absorbing and removing water vapor, the supporting ring is pulled to control automatic opening and closing of the valve port, the water vapor in the mask is reduced, the mask cannot rise to be attached to glasses, and the wearing comfort is enhanced.

A method for generating a plant having improved growth and / or yield. The method comprises increasing the size of one or more guard cells in a plant compared to a guard cell size in an independent wild

Provided is a method for generating a plant having improved growth and / or yield. The method comprises selectively increasing the size of one or more guard cells in a plant wherein the guard cell size is increased compared to guard cell size in an independent wild type control plant of the same species under the same environmental conditions. The ratio of guard cell size to leaf epidermal cell size in the plant is increased as compared to the ratio in the control plant. Also provided is a plant obtainable by the method; a gene construct; a transformed plant part or plant progeny; and a plant part, plant tissue, plant organ, plant cell, plant protoplast, embryo, callus culture, pollen grain or seed, derived or obtained from the plant.

The invention provides a method for promoting water loss of tobacco leaves difficult to flue-cure based on photoinduction of in-vitro leaf stomata opening, and belongs to the technical field of tobacco leaf modulation.The method includes the steps that after a standard tobacco leaf sample is selected and pretreated, soaking treatment is conducted through a photoresponse synergistic solution containing a fluridone abscisic acid antagonist and an ethylene diamine tetraacetic acid calcium ion chelating agent; and carrying out light induction under a narrow-spectrum blue light LED light source to activate a guard cell blue light receptor and inhibit an abscisic acid signal channel at the same time so as to realize continuous opening of pores. According to the method, after a portable photosynthetic measuring system monitors that stomatal conductance reaches the standard, tobacco leaves are transferred to a multi-layer drying system, a stomatal water potential gradient model and a PI D control system are used for dynamically adjusting drying parameters, and it is ensured that moisture is efficiently and evenly evaporated; finally, the drying effect is comprehensively evaluated through chromatic aberration measurement, tissue elasticity analysis and aroma precursor substance content evaluation, and the technical problem that in the drying process of the tobacco leaves difficult to bake, air holes are closed, and consequently water evaporation is slow is solved.

The present invention belongs to the technical field of protoplast separation, and relates to a reagent, a kit and a method for separating populus alba guard cell protoplasts. The present invention provides a reagent for separating populus alba guard cell protoplasts, comprising enzyme solution I and enzyme solution II; the enzyme solution I comprises: 0.5% cellulase R-10, 0.02% macerozyme R-10, 0.25 M D-mannitol, 20 mM KCl, 20 mM MES, 10 mM CaCl2, 0.2% BSA and water; the enzyme solution II comprises: 1.5% cellulase R-10, 0.02% macerozyme R-10, 0.4 M D-mannitol, 20 mM KCl, 20 mM MES, 10 mM CaCl2, 0.2% BSA and water. The reagent of the present invention can achieve efficient separation of populus alba guard cell protoplasts, and the obtained protoplasts have high purity, integrity and large quantity.

The utility model discloses an automatic monitoring and collecting system for leaf surface potential in a crop seedling stage. The crop seedling stage leaf surface potential automatic monitoring and acquisition system comprises a leaf surface potential detection device, a leaf surface potential acquisition device and a leaf surface potential gathering device, the leaf surface potential detection device comprises a detection frame, a detection platform and a shading assembly, and the detection frame is provided with a shading cover and a gooseneck type optical fiber; an electric signal acquisition probe is arranged on the detection platform, the shading assembly comprises a base and a shading plate, one end of the shading plate is connected with the base, and the shading plate is driven by the base to be switched back and forth between a first position and a second position; the potential acquisition device is used for collecting leaf surface electric signal information; and the leaf surface potential summarizing device is used for summarizing the collected leaf surface potential information. And plant mesophyll cells, guard cells and the like are induced to generate potential change with high reproducibility through instantaneous strong light stimulation, so that high-flux lossless acquisition of plant leaf surface potential is realized.

This invention belongs to the field of plant regulation and protein engineering technology, specifically relating to a fusion protein that regulates endogenous ABA signaling based on optogenetics and its applications. Specifically, this invention, based on optogenetics, fuses the protein kinase OST1 from the ABA signal transduction component with the optogenetic element cpLOV2, which can be activated / inactivated through dark / light treatment. This achieves the goal of using light to transmit and block ABA signals within the cell to regulate stomatal movement, thereby increasing plant biomass and achieving high and sustainable crop yields, thus possessing significant practical application value.

The invention discloses a method for promoting opening of plant stomata through optogenetics, and belongs to the technical field of plant growth and development research. By activating the light-operated hydrogen ion pump PPR protein, the length and width of the plant stomata can be regulated and controlled, the stomata opening and closing can be controlled, the opening of the plant stomata is promoted, and the stomata conductance of the plant is improved. The light-operated hydrogen ion pump PPR protein is transferred into guard cells, and the length and width of the pores are regulated and controlled under the illumination condition, so that the opening and closing of the pores are controlled. The opening and closing mechanism does not depend on frequent stimulation of external conditions, but accelerates transmembrane transport of hydrogen ions by means of illumination, so that accurate regulation and control of plant stomata can be realized.