Infection and dispersal processes of Pseudomonas syringae pv. coriandricola on coriander

Stephen Refshaugr, Murali Nayudu, John Vranjic, Clive Bock

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

An Australian isolate of Pseudomonas syringae pv. coriandricola (Psc) was used to study aspects of dispersal of the pathogen and infection of coriander. Needle inoculation of Psc in the stem of coriander resulted in up to 94% plant mortality. The total biomass of inoculated plants decreased significantly four weeks after inoculation as compared to the control plants. Systemic infection was rapid and one week after inoculation a bacterial population of about 104 to 108 cfu g-1 was isolated from different parts of the stems and roots. Surface contamination of coriander seed with Psc prior to planting resulted in low disease incidence (8%). However, spray inoculation of healthy coriander plants with Psc at concentrations equal to or greater than 103 CFU mL-1 caused disease on the leaves, suggesting infection was common through the stomata. Splash dispersal of Psc was demonstrated, with disease being observed on surrounding coriander seedlings. Psc bacteria were dispersed up to 70 cm from the inoculum source
Original languageEnglish
Pages (from-to)42-50
Number of pages9
JournalPhytopathologia Mediterranea
Volume49
Issue number1
Publication statusPublished - 2010
Externally publishedYes

Fingerprint

Coriandrum sativum
Pseudomonas syringae
infection
coriander seed
stems
stomata
disease incidence
inoculum
planting
seedlings
pathogens
bacteria
leaves

Cite this

Refshaugr, Stephen ; Nayudu, Murali ; Vranjic, John ; Bock, Clive. / Infection and dispersal processes of Pseudomonas syringae pv. coriandricola on coriander. In: Phytopathologia Mediterranea. 2010 ; Vol. 49, No. 1. pp. 42-50.
@article{4eca48aa05a44a688c7ab479b702d631,
title = "Infection and dispersal processes of Pseudomonas syringae pv. coriandricola on coriander",
abstract = "An Australian isolate of Pseudomonas syringae pv. coriandricola (Psc) was used to study aspects of dispersal of the pathogen and infection of coriander. Needle inoculation of Psc in the stem of coriander resulted in up to 94{\%} plant mortality. The total biomass of inoculated plants decreased significantly four weeks after inoculation as compared to the control plants. Systemic infection was rapid and one week after inoculation a bacterial population of about 104 to 108 cfu g-1 was isolated from different parts of the stems and roots. Surface contamination of coriander seed with Psc prior to planting resulted in low disease incidence (8{\%}). However, spray inoculation of healthy coriander plants with Psc at concentrations equal to or greater than 103 CFU mL-1 caused disease on the leaves, suggesting infection was common through the stomata. Splash dispersal of Psc was demonstrated, with disease being observed on surrounding coriander seedlings. Psc bacteria were dispersed up to 70 cm from the inoculum source",
keywords = "coriander-blight, coriandrum-sativum, epidemology, disease-spread",
author = "Stephen Refshaugr and Murali Nayudu and John Vranjic and Clive Bock",
year = "2010",
language = "English",
volume = "49",
pages = "42--50",
journal = "Phytopathologia Mediterranea",
issn = "0031-9465",
publisher = "Firenze University Press",
number = "1",

}

Refshaugr, S, Nayudu, M, Vranjic, J & Bock, C 2010, 'Infection and dispersal processes of Pseudomonas syringae pv. coriandricola on coriander', Phytopathologia Mediterranea, vol. 49, no. 1, pp. 42-50.

Infection and dispersal processes of Pseudomonas syringae pv. coriandricola on coriander. / Refshaugr, Stephen; Nayudu, Murali; Vranjic, John; Bock, Clive.

In: Phytopathologia Mediterranea, Vol. 49, No. 1, 2010, p. 42-50.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Infection and dispersal processes of Pseudomonas syringae pv. coriandricola on coriander

AU - Refshaugr, Stephen

AU - Nayudu, Murali

AU - Vranjic, John

AU - Bock, Clive

PY - 2010

Y1 - 2010

N2 - An Australian isolate of Pseudomonas syringae pv. coriandricola (Psc) was used to study aspects of dispersal of the pathogen and infection of coriander. Needle inoculation of Psc in the stem of coriander resulted in up to 94% plant mortality. The total biomass of inoculated plants decreased significantly four weeks after inoculation as compared to the control plants. Systemic infection was rapid and one week after inoculation a bacterial population of about 104 to 108 cfu g-1 was isolated from different parts of the stems and roots. Surface contamination of coriander seed with Psc prior to planting resulted in low disease incidence (8%). However, spray inoculation of healthy coriander plants with Psc at concentrations equal to or greater than 103 CFU mL-1 caused disease on the leaves, suggesting infection was common through the stomata. Splash dispersal of Psc was demonstrated, with disease being observed on surrounding coriander seedlings. Psc bacteria were dispersed up to 70 cm from the inoculum source

AB - An Australian isolate of Pseudomonas syringae pv. coriandricola (Psc) was used to study aspects of dispersal of the pathogen and infection of coriander. Needle inoculation of Psc in the stem of coriander resulted in up to 94% plant mortality. The total biomass of inoculated plants decreased significantly four weeks after inoculation as compared to the control plants. Systemic infection was rapid and one week after inoculation a bacterial population of about 104 to 108 cfu g-1 was isolated from different parts of the stems and roots. Surface contamination of coriander seed with Psc prior to planting resulted in low disease incidence (8%). However, spray inoculation of healthy coriander plants with Psc at concentrations equal to or greater than 103 CFU mL-1 caused disease on the leaves, suggesting infection was common through the stomata. Splash dispersal of Psc was demonstrated, with disease being observed on surrounding coriander seedlings. Psc bacteria were dispersed up to 70 cm from the inoculum source

KW - coriander-blight

KW - coriandrum-sativum

KW - epidemology

KW - disease-spread

M3 - Article

VL - 49

SP - 42

EP - 50

JO - Phytopathologia Mediterranea

JF - Phytopathologia Mediterranea

SN - 0031-9465

IS - 1

ER -