摘要:
Disclosed is substantially pure DNA encoding an Arabidopsis thaliana Rps2 polypeptide, substantially pure Rps2 polyneptide; and methods of using such DNA to express the Rps2 polypeptide in plant cells and whole plants to provide, in transgenic plants, disease resistance to pathogens. Also disclosed are conserved regions characteristic of the RPS family and primers and probes for the identification and isolation of additional RPS disease-resistance genes.
摘要:
The invention relates to a method of identifying a plant disease-resistance gene that includes the steps of (a) providing a plant tissue sample; (b)introducing by biolistic transformation into the plant tissue sample a candidate plant disease-resistance gene; (c) expressing the candidate plant disease-resistance gene within the plant tissue sample; and (d) determining whether the plant tissue sample exhibits a disease-resistance response, whereby a response identifies a plant disease-resistance gene.
摘要:
Disclosed is substantially pure DNA encoding an Arabidopsis thaliana Rps2 polypeptide; substantially pure Rps2 polypeptide; and methods of using such DNA to express the Rps2 polypeptide in plant cells and whole plants to provide, in transgenic plants, disease resistance to pathogens. Also disclosed are conserved regions characteristic of the RPS family and primers and probes for the identification and isolation of additional RPS disease-resistance genes.
摘要:
Disclosed is a new plant resistance gene family, the members of which encode plant resistance polypeptides having P-loop and LRR structural motifs. Also disclosed are substantially pure plant DNAs encoding such polypeptides. The invention further involves transgenic plants and transformed host cells that express these DNAs and exhibit enhanced disease resistance to plant pathogens.
摘要:
Disclosed is substantially pure DNA encoding an Arabidopsis thaliana Rps2 polypeptide; substantially pure Rps2 polypeptide; and methods of using such DNA to express the Rps2 polypeptide in plant cells and whole plants to provide, in transgenic plants, disease resistance to pathogens. Also disclosed are conserved regions characteristic of the RPS family and primers and probes for the identification and isolation of additional RPS disease-resistance genes.
摘要:
Nucleic acid molecules (cDNAs and genes) that confer resistance to the plant pathogen Xanthomonas campestris are disclosed. These molecules may be introduced into plants that are otherwise susceptible to infection by this bacterium in order to enhance resistance.
摘要:
A process for identifying a plant having disease tolerance comprising administering to a plant an inhibitory amount of ethylene and screening for ethylene insensitivity, thereby identifying a disease tolerant plant, is described. Plants identified by the foregoing process are also described.
摘要:
Methods and compositions for making citrus plants with enhanced resistance to Asiatic citrus canker (ACC) and other forms of citrus canker caused by Xanthomonas are provided. The methods involve transforming citrus plant cells with polynucleotide constructs comprising a promoter operably linked to nucleotide sequence that encodes a protein that is capable of triggering cell death in a citrus plant. The promoters of the invention are inducible by one or more Xanthomonas strains that cause citrus canker. Isolated nucleic acid molecules and expression cassettes comprising such polynucleotide constructs and promoters are further provided. Citrus plants with enhanced resistance to citrus canker are also provided.
摘要:
Bs2 resistance proteins that confer resistance to the plant pathogen Xanthomonas campestris are disclosed. These proteins may be expressed in transgenic plants that are otherwise susceptible to infection by this bacterium in order to enhance resistance.
摘要:
DNA sequences encoding for ice nucleation activity are isolated and introduced into unicellular hosts. The modified hosts demonstrate ice nucleation activity analogous to the DNA source host. The cellular products find use in inhibiting supercooling.