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Head of Institute: Prof. Oren Tirosh

Administrative manager: Rakefet Kalev

Office Address:
Institute of Biochemistry, Food Science and Nutrition,
Robert H. Smith Faculty of Agriculture, Food and Environment,
The Hebrew University of Jerusalem, 
Herzl 229, Rehovot 7610001, ISRAEL

Tel: +972 - (0)8-9489385
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Email Address: rakefetk@savion.huji.ac.il

Host Specificity and Differential Pathogenicity of Pectobacterium Strains from Dicot and Monocot Hosts

Citation:

Khadka, N. ; Joshi, J. R. ; Reznik, N. ; Chriker, N. ; Nudel, A. ; Zelinger, E. ; Kerem, Z. ; Yedidia, I. Host Specificity and Differential Pathogenicity of Pectobacterium Strains from Dicot and Monocot Hosts. MICROORGANISMS 2020, 8.

Date Published:

OCT

Abstract:

Recent phylogenetic studies have transferred certain isolates from monocot plants previously included in the heterogeneous group of Pectobacterium carotovorum (Pc) to a species level termed Pectobacterium aroidearum. The specificity of Pectobacterium associated infections had received less attention, and may be of high scientific and economic importance. Here, we have characterized differential responses of Pectobacterium isolates from potato (WPP14) and calla lily (PC16) on two typical hosts: Brassica oleracea var. capitata (cabbage) a dicot host; and Zantedeschia aethiopica (calla lily) a monocot host. The results revealed clear host specific responses following infection with the two bacterial strains. This was demonstrated by differential production of volatile organic compounds (VOCs) and the expression of plant defense-related genes (pal, PR-1, lox2, ast). A related pattern was observed in bacterial responses to each of the host's extract, with differential expression of virulence-related determinants and genes associated with quorum-sensing and plant cell wall-degrading enzymes. The differences were associated with each strain's competence on its respective host.