5 results about "Photosystem" patented technology

This invention discloses a method for enhancing the high-temperature resistance of citrus through exogenous spraying of naringin, belonging to the field of agricultural technology. The method involves preparing naringin into a formulation and spraying it exogenously onto the leaves of citrus plants. Experiments show that after treatment with naringin, phenotypic damage such as wilting and curling of citrus seedling leaves under high-temperature stress is significantly alleviated; the maximum photochemical efficiency of photosystem II (Fv / Fm) is significantly increased; electrolyte leakage rate and malondialdehyde content are significantly reduced; and the accumulation of hydrogen peroxide and superoxide anions is effectively inhibited. This invention utilizes naturally sourced naringin to significantly enhance the tolerance of citrus to high-temperature stress through multiple mechanisms, including maintaining photosynthetic system function, protecting cell membrane integrity, inhibiting membrane lipid peroxidation, and scavenging reactive oxygen species. Furthermore, the method is simple to operate, environmentally friendly, and low-cost, making it suitable for stress-resistant citrus cultivation.

The present application relates to the technical field of submerged vegetation restoration, and particularly relates to a river submerged vegetation restoration fixed-point light supplement system with self-cleaning function; the system comprises a waterproof shell, a spectrum-optimized light source module, a secondary optical lens module, an automatic cleaning arm module and an intelligent control core module; wherein: the waterproof shell is used for providing outdoor waterproof protection; the spectrum-optimized light source module is used for outputting an optimized spectrum suitable for photosynthesis of submerged plants; the secondary optical lens module is installed on the spectrum-optimized light source module and is used for adjusting the light angle and light range; the automatic cleaning arm module is used for regularly removing algae and scale on the surface of the waterproof shell to maintain the light transmittance; and the intelligent control core module is used for unified regulation and control of the light source, cleaning action and remote interaction; in the above manner, the effects of spectrum optimization, light adjustment and automatic cleaning are achieved, the photosynthesis and growth of submerged plants are promoted, and the river ecological restoration process is accelerated.

This invention relates to the field of plant stress diagnosis technology, and more particularly to a modulated fluorescence imager that uses blue and green light to calculate the photochemical efficiency Φ of leaf photosystem I. PSI The method described in this invention utilizes a Mini-PAM chlorophyll fluorometer to measure blue and green light excitation in tomato leaves of both the test and control groups to generate fluorescence. Based on the measurement results, the photochemical efficiency Φ of photosystem I is calculated. PSI This allows for the diagnosis of the condition of the crop under test. The photochemical efficiency Φ of the photosystem I mentioned in this invention... PSI It is more sensitive to stress and is more effective in reflecting adverse stress. It is expected to be applied to the early diagnosis of stress in plants, so as to intervene in time and reduce losses.

Provided herein, in some embodiments, are engineered cells and use of the same for increased hydrogen production. In particular, provided herein are genetically engineered cells comprising a polynucleotide encoding a fusion protein comprising a photosystem I (PSI) protein and an algal hydrogenase, as well as methods for producing such genetically engineered cells. Also provided herein are methods for increasing hydrogen (H2) production in cells.

This invention belongs to the field of cultivation technology of Panax notoginseng, a precious Chinese medicinal herb. It relates to a method for preparing and applying a carbon quantum dot nanoemulsion. The method involves mixing an emulsifier and water, then adding an oil phase containing carbon quantum dots, and stirring until homogeneous to obtain a carbon quantum dot nanoemulsion. After diluting the nanoemulsion with water, it can be sprayed onto Panax notoginseng leaves. The results show that the nanoemulsion promotes the accumulation of photosynthetic pigments and enhances the activity of the photosynthetic system in Panax notoginseng leaves, thereby increasing the photosynthesis and photosynthetic product accumulation of Panax notoginseng leaves, and ultimately promoting the accumulation of Panax notoginseng biomass and saponins.