Targeting microbial pathogens by expression of new recombinant dermaseptin peptides in tobacco

Autor: Mitra Khademi, Farhad Nazarian‐Firouzabadi, Ahmad Ismaili, Reza Shirzadian Khorramabad
Jazyk: angličtina
Rok vydání: 2019
Předmět:
Zdroj: MicrobiologyOpen, Vol 8, Iss 11, Pp n/a-n/a (2019)
Druh dokumentu: article
ISSN: 2045-8827
DOI: 10.1002/mbo3.837
Popis: Abstract Dermaseptin B1 (DrsB1), an antimicrobial cationic 31 amino acid peptide, is produced by Phyllomedusa bicolor. In an attempt to enhance the antimicrobial efficacy of DrsB1, the DrsB1 encoding 93 bp sequence was either fused to the N or C terminus of sequence encoding chitin‐binding domain (CBD) of Avr4 gene from Cladosporium fulvum. Tobacco leaf disk explants were inoculated with Agrobacterium rhizogenes harboring pGSA/CBD‐DrsB1 and pGSA/DrsB1‐CBD expression vectors to produce hairy roots (HRs). Polymerase chain reaction (PCR) was employed to screen putative transgenic tobacco lines. Semi‐quantitative RT‐PCR and western blotting analysis indicated that the expression of recombinant genes were significantly higher, and recombinant proteins were produced in transgenic HRs. The recombinant proteins were extracted from the tobacco HRs and used against Pectobacterium carotovorum, Agrobacterium tumefaciens, Ralstonia solanacearum, and Xanthomonas campestris pathogenic bacteria and Alternaria alternata and Pythium sp. fungi. Two recombinant proteins had a statistically significant (p
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