Abstract: The present invention relates to a gene encoding Synechocystis putative DNA binding stress protein (SyDBSP protein) derived from cyanobacteria Synechocystis PCC6906; a method for enhancing the salt tolerance of a plant comprising transforming a plant cell with a recombinant vector comprising the SyDBSP gene and overexpressing the SyDBSP gene; a plant having enhanced salt tolerance produced by the aforementioned method, and seed of the plant.

Abstract: The present invention relates to a gene encoding SyGT (Synechocystis glucosyl transferase) protein derived from cyanobacteria (Synechocystis) PCC 6906, a method for enhancing salt tolerance of a plant comprising transforming a plant cell with a recombinant vector comprising the SyGT gene and overexpressing the SyGT gene, a plant having enhanced salt tolerance produced by the method, and seed of the plant.

Abstract: The present invention relates to a plastid transformation system capable of preventing second recombination events of heterologous genes inserted into plastid genomes. More specifically, this invention relates to a plastid transformation vector carrying a promoter and a terminator derived from organisms other than tobacco. The inventive recombinant expression vector for plastid transformation is capable of mass-producing exogenous proteins on a level par with conventional vectors carrying promoter/terminator couples of tobacco origin. At the same time, it is capable of preventing second recombination events within plastids. Thus, the vector of this invention is greatly useful in producing transgenic plants since it can effect a secure introduction of heterologous genes and support normal transformation and heterologous gene expression.

Abstract: The present invention relates to a method for increasing salt tolerance of a plant by overexpressing SyFBP/SBPase gene isolated from Synechocystis, a plant and seed having increased salt tolerance ability that is produced by the same method, a composition for increasing salt tolerance of a plant in which gene encoding SyFBP/SBPase is comprised, and a recombinant vector for the transformation of chloroplasts in which gene encoding SyFBP/SBPase is comprised.

Abstract: The present invention relates to a method for enhancement of photosynthesis and biomass of a plant by plastid transformation with MDH gene, more precisely a method for enhancement of photosynthesis and biomass of C3 plant by plastid transformation system with MDH gene. The MDH plastid transgenic plant prepared by the method of the present invention exhibits not only increased photosynthesis efficiency but also increased growth rate, leaf area, stem diameter and biomass of the plant, compared with the control plant. Therefore, the plastid transformed C3 plant prepared by C4 type gene introduction can be effectively used for enhancing photosynthesis and biomass of the plant.

Abstract: The present invention relates to a plastid transformation system capable of preventing second recombination events of heterologous genes inserted into plastid genomes. More specifically, this invention relates to a plastid transformation vector carrying a promoter and a terminator derived from organisms other than tobacco. The inventive recombinant expression vector for plastid transformation is capable of mass-producing exogenous proteins on a level par with conventional vectors carrying promoter/terminator couples of tobacco origin. At the same time, it is capable of preventing second recombination events within plastids. Thus, the vector of this invention is greatly useful in producing transgenic plants since it can effect a secure introduction of heterologous genes and support normal transformation and heterologous gene expression.

Abstract: The objective of this invention is to enhance the efficiency of plastid transformation using nuclear transformed plants in which the microbial recombinase A(recA) is to target to (or expressed in) the plastid. This invention will be better explained by the following detailed descriptions. A plant is transformed with a nuclear transformation vector containing the microbial recA gene added with a plastid targeting sequence. In this nuclear transformed plant, the frequency of plastid transformation is enhanced greater than two-folds due to increased homologous recombination between the plastid transformation vector carrying genes of interest (or target genes) and the plastid genome. In addition, because plastid transformation is accomplished through a gradual process, adventitious shoots selected after being subjected to plastid transformation should be cut into explants, and then shoots regenerated from the explants are to be reselected until all of the plastids in the shoots are uniformly transformed.

Abstract: The present invention provides a novel receptor kinase and the gene thereof which can be used for activating plant defense systems against several pathogens such as fungi. The receptor kinase CHRK1 of this present invention has an extracellular domain similar to a chitinase, and whose gene expression is stimulated by infection of TMV. In addition, the receptor kinase CHRK1 contains a chitin-binding activity as well as a kinase activity so that it binds to chitin of fungal cell wall as a chitin receptor, stimulates a kinase domain, and thus effectively activates versatile plant defense systems. Therefore, the receptor kinase CHRK1 of this present invention can be used for developing plants having high resistance to fungi.

Abstract: A process for the preparation of an antiviral plant, which comprises transforming a plant with an expression vector containing a lactoferrin (Lf) gene and culturing the transformed plant.