7 results about "Monocotyledon" patented technology

Provided are a prime editing system-based method for achieving inversion editing of a large genomic fragment and a composition used. By means of the efficient multi-gene prime editing protein construct ePPEplus in plants, the inversion of large fragments in plants is achieved by means of designing paired pegRNAs (pegL and pegR), and then by means of processes such as reverse transcription, DNA double-stranded annealing, DNA strand synthesis, and repair. The pegL comprises RTT-L, and the pegR comprises RTT-R. The nucleotide sequence of RTT-L is identical to that of strand A at the right terminus of a double-stranded DNA to be inverted. The nucleotide sequence of RTT-R is identical to that of strand B at the left terminus of said DNA. By means of testing in the monocotyledonous plant wheat and dicotyledonous plants Nicotiana benthamiana and tomato, it is indicated that the method is an effective method for mediating precise inversion of large-fragment DNA in plants.

Monocot plants heterozygous for centromeric histone 3 (CenH3) and optionally expressing gene editing constructs, for use in inducing haploids of a monocot target plant and optionally pass-through gene editing are provided. The monocot haploid inducer plants are typically composed of diploid plant cells having only one allele encoding a functional CENH3 protein. The diploid plant cells can also include, for example, one CenH3 allele encoding non-functional CENH3 protein. In some embodiments, the allele encoding non-functional CENH3 protein is a frameshift mutation, protein null allele, an RNA null allele, or a combination thereof. The monocot haploid inducer plant can also include gene editing machinery, such as a site-directed nuclease and optionally a guide RNA stably expressed by cells of the monocot plant. Methods of inducing formation of a target haploid monocot plant while optionally simultaneously modifying the target monocot plant's genome are also provided.

The utility model discloses a light combined arched farmland flying prevention isolation device, including the isolation cover of coverable setting above the plant, the both ends of isolation cover along width direction are detachably penetrated with support piece, the support piece has the elastic deformation ability, and the support piece after bending deformation can maintain isolation cover is round arch structure setting. The utility model provides technical scheme, sets above the monocotyledon or dicotyledon crop with a detachable isolation device, combines good and fixes above the plant before spraying pesticide or herbicide, can avoid pesticide or herbicide mist drop to scatter to above the plant, can play the protection effect to monocotyledon or dicotyledon crop, and whole can be freely combined according to the size of crop area, and the more wide application range is suitable.

Disclosed is a gene for boosting genetic transformation efficiency of wheat and use thereof, which belongs to the field of plant genetic engineering technology. The use of a TaHRF1 gene and an encoded protein thereof can promote integration of an exogenous nucleic acid molecule into a genome of a plant of interest, and boost efficiency of the integration of the nucleic acid molecule, and the transformed plant grows and develops normally. The plant of interest includes, but is not limited to, monocotyledonous plants such as wheat. The present disclosure provides a new and important genetic resource for overcoming the genotype dependence in genetic transformation of wheat.

The present application relates to a kind of monocotyledon green wisteria rapid propagation method, using the characteristics of green wisteria specific tissue cell totipotency, under open condition, using liquid medium to induce green wisteria specific site of in vitro leaf split differentiation, produce regenerative root and regenerative bud, finally form plant.The present application aims at the rapid propagation method of green wisteria leaf, without sterile environment, convenient to take material, easy to operate, low in cost, short in period, high in survival rate, with the advantages of high efficiency, economy, easy to scale, factory, etc., in green wisteria rapid seedling, specific material preservation and propagation has greater application value.

This invention provides a method for establishing a rapid propagation system of *Iris tectorum* through tissue culture using autumn dormant buds. The method uses autumn dormant buds of *Iris tectorum* as explants. Aseptic buds are obtained by removing the base and excess above-ground parts, fixing, peeling, and clamping. The buds are then longitudinally cut to increase the propagation coefficient, inducing clustered lateral buds, and then inducing rooting to form aseptic mature plants. The aseptic rate after 7 days is 57.12%, and the fungal rate is 0.15%. The aseptic rate after 20 days of the first subculture is 84.66%, and the rooting rate after 50 days is 63.33%. This method eliminates the need for callus induction and differentiation stages, significantly shortening and simplifying the time and procedure for obtaining aseptic *Iris tectorum* seedlings. The method is easy to control, low in cost, and highly efficient. It provides a new approach for further subculture or callus redifferentiation to establish a highly efficient rapid propagation system for monocotyledonous plants, and provides a solid foundation for the breeding, asexual reproduction, polyploid breeding, and even genetic engineering breeding research of *Iris tectorum* original species and varieties.

The application discloses corn ZmDLR9 Gene in regulating plant lateral root development belongs to the technical field of plant genetic engineering and crop genetic improvement. ZmDLR9 The gene can not only play a role in promoting lateral root development in corn, but also can replace the function of a homologous gene in dicotyledonous plants Arabidopsis thaliana. Through a back-up experiment, it is proved that ZmDLR9 The gene can save the lateral root development defect of Arabidopsis thaliana homologous protein APUM24 after loss of function, which indicates that the function of the gene in promoting lateral root development has cross-species conservation, and further proves that ZmDLR9 The gene promotes the development of plant lateral roots, and is not a specific regulation mechanism of corn. Therefore, ZmDLR9 The gene regulates the development of plant lateral roots in monocotyledons and dicotyledons, and has important agricultural production application value for cultivating new varieties with more developed lateral root systems, higher nutrient and water absorption efficiency and stronger stress resistance (such as drought resistance and tolerance to barrenness).