INTRAMITE

Intraspecific Variability in How Herbivores Cope with Induced Plant Defences

 Coordinatore UNIVERSITEIT VAN AMSTERDAM 

 Organization address address: SPUI 21
city: AMSTERDAM
postcode: 1012WX

contact info
Titolo: Prof.
Nome: Maurice
Cognome: Sabelis
Email: send email
Telefono: -8250
Fax: -8268

 Nazionalità Coordinatore Netherlands [NL]
 Totale costo 159˙434 €
 EC contributo 159˙434 €
 Programma FP7-PEOPLE
Specific programme "People" implementing the Seventh Framework Programme of the European Community for research, technological development and demonstration activities (2007 to 2013)
 Code Call FP7-PEOPLE-2007-2-1-IEF
 Funding Scheme MC-IEF
 Anno di inizio 2008
 Periodo (anno-mese-giorno) 2008-04-01   -   2010-07-31

 Partecipanti

# participant  country  role  EC contrib. [€] 
1    UNIVERSITEIT VAN AMSTERDAM

 Organization address address: SPUI 21
city: AMSTERDAM
postcode: 1012WX

contact info
Titolo: Prof.
Nome: Maurice
Cognome: Sabelis
Email: send email
Telefono: -8250
Fax: -8268

NL (AMSTERDAM) coordinator 0.00

Mappa


 Word cloud

Esplora la "nuvola delle parole (Word Cloud) per avere un'idea di massima del progetto.

ways    enemies    hipv    indirect    urticae    natural    mites    first    direct    hinder    herbivore    induce    defence    traits    pest    mechanisms    defences    plant    herbivores    induced   

 Obiettivo del progetto (Objective)

'Herbivore feeding induces massive metabolic reconfigurations in plants under attack. Such changes mediate tissue repair, resource allocation and defence. Induced plant-defences are studied intensively since they are plant-own and thus might lead to novel and environment-friendly ways of crop protection. Induced plant-defences come in two forms: the first are the induced direct defences which involve plant-produced toxins. The second are the indirect defences which augment direct defences and are established by de novo production of herbivore-induced plant volatiles (HIPV) that attract natural enemies of herbivores. Both types of defence decrease herbivore fecundity and survival. Thus, plant defences must impose selection pressure on herbivores and natural selection theory predicts that species will undergo adaptive changes towards increased resistance, provided there is sufficient genetic variation. Recently, such intraspecific variability was described for the first time in a herbivorous pest, the spider mite Tetranychus urticae. It was found that different individuals can induce or suppress direct defences and, importantly, differentially induce the emission of HIPV. Therefore mites may not only adapt to become resistant to plant defences, but also to not induce them and to not induce the attraction of natural enemies. I propose to characterize T. urticae selection-lines that differ in the extent to which they induce direct and indirect defences, and (1) to elucidate mechanisms whereby they hinder direct and indirect defences; (2) to map the inheritance of traits that enable mites to hinder defences, and (3) to investigate the implication of such traits for the stability and persistence of predator-prey meta-populations. Meeting these objectives will shed new light on the mechanisms by which interactions between individual traits explain the macroscopic patterns in population dynamics and show new ways for sustainable pest-management.'

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