Working group 3: Phytoplasma
control in crop systems
co-ordinators:
 Dr.
Wolfgang Jarausch (Germany)
Dr.
Ester Torres (Spain)
WG3 members (pdf file, please click to
download)
New:
Abstract book of the Working group meeting “Prospectives of endophytes
as biocontrol agents in the management of phytoplasma diseases”,
San Michele all’Adige, Italy, 14th of November 2012
 
Program of the Working group meeting “Prospectives of endophytes as
biocontrol agents in the management of phytoplasma diseases”,
San Michele all’Adige, Italy, 14th of November 2012
Minutes of the WG3 meeting in Neustadt, September 2011
Meeting of WG3 in Ancona, Italy, 23rd and 24th September 2010
(click to download program)
Download report of the WG3 meeting in Ancona (new updated file
since 15/11/2010)
Download questionnaires WG3:
1. Control strategies for vectors of apple
proliferation (AP), pear decline (PD) and European stone fruit yellows (ESFY)
(Excel file)
2.
Control strategies for Grapevine Yellows and Grapevine Yellows vectors
(Excel file)
Crop systems treated in
WG3:
·
European
fruit tree phytoplasma diseases
·
Grapevine
phytoplasma diseases
Tasks of Working Group 3
Phytoplasma control in crop systems
Task 1 identification
and breeding of crop plant varieties that are resistant (or less
susceptible) to the phytoplasma
- collection of data on the
susceptibility/resistance of different cultivars and rootstocks
-
establishment of a database of resistant/tolerant cultivars/rootstocks
and of genetic resources for resistance
-
development of new resistant cultivars/rootstocks by conventional
breeding or transgenic approaches
-
development of model systems to study the resistance mechanisms
-
analysis of the genomic base of resistance (link to WG4)
Task 2 examination of
the effects of biotic and
abiotic environmental factors on disease and symptom development
-
analysis of the effectiveness of plant resistance inducers and similar
bioactive compounds
-
establishment of a database for effective bioactive compounds
-
development of model systems to study the effect of biotic and abiotic
factors
-
analysis of physiological changes after infection including recovery
-
analysis of the influence of climatic conditions on symptom development
(predictions of the effect of climat change?)
-
analysis of the influence of mycorrhiza on the symptom development
Task 3 improvement of vector
control with special attention to low-impact insecticides and treatment
schedules as well as the development of innovative, environmentally
sustainable vector control strategies
-
collection of data about the actually applied control strategies
(establishment of a database)
-
analysis of the effectiveness of available environmentally sustainable
insecticides
-
development of new innovative control strategies
-
implications of alternative host plants for the phytoplasma or the
vector on the development of effective control strategies
Task 4 recommendations for
best practices in disease control including prevention, eradication,
control of vector, and best cropping systems based on results of tasks
1, 2 and 3 in WG3 as well as on results of WG1 and WG2
-
collection of recommendations for different crop systems and
countries (establishment of a database)
-
definition of control measures to prevent the introduction of a new
phytoplasma disease into a region (inside or outside of Europe)
Task 5 verification whether
the interaction of endophytes with host plant and phytoplasma can be
used to control phytoplasma diseases
-
collection of data about microorganisms exhibiting inhibitory
effects on phytoplasmas (establishment of a database)
-
development of model systems to study the inhibitory effect
Task 6 verification whether
mild phytoplasma strains can effectively protect plants from infection
by virulent (or severe) phytoplasma strains
-
collection of data about mild phytoplasma strains with potential
protective effect on severe strains (establishment of a database)
-
development of tools to distinguish mild from severe strains of a given
phytoplasma
-
development of model systems to study the protective effect of mild
strains including tools to analyse the effect
-
field studies to prove the protective effect under natural conditions
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