Abstract
Diapause-specific peptide (DSP) is an insect antimicrobial peptide, composed of 41 amino acid residues including six cysteines and isolated from diapausing adults of the leaf beetle Gastrophysa atrocyaneais. Recent research results have been demonstrated that in vitro, DSP has selective antifungal activity against the higher animal pathogenic fungus Trichophyton rubrum and the plant phytopathogenic fungus Fusarium solani. To elucidate the effect of DSP on other phytopathogenic fungi, we respectively introduced a Cht1SP-DSP-FLAG fusion gene and Cht1SP-FLAG fusion gene into Arabidopsis ecotype col-0. Transgenic plants expressing Cht1SP-DSP-FLAG fusion gene showed significant resistance to Golovinomyces cichoracearum (biotrophic fungus), Botrytis cinerea (necrotrophic fungus) and Hyaloperonospora arabidopsidis (H. a.) Noco2 (oomycete), whilst transgenic plants expressing Cht1SP-FLAG fusion gene showed no resistance to these pathogens. These results indicated that for many plant pathogenic fungi, DSP has high antimicrobial activity, which suggests that DSP has a huge potential in protecting crops from damage from phytopathogenic fungi.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.