Bulletin of Insectology (2011) 64, S151-S152

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Luciana Galetto, Cristina Marzachì, Rodrigo Marques, Carlo Graziano and Domenico Bosco (2011)
Effects of temperature and CO2 on phytoplasma multiplication pattern in vector and plant
Bulletin of Insectology 64 (Suppl.), S151-S152
Second International Phytoplasmologist Working Group Meeting (IPWG), Neustadt an der Weinstraße (Germany) September 12-15, 2011
Abstract: Multiplication patterns of two phytoplasmas, chrysanthemum yellows and 'flavescence dorée' were characterized over time in insect vectors and plant hosts under different climatic (temperature, T, and CO2) conditions. Acquisition and transmission experiments were run in parallel in two phytotrons (P1 and P2). Euscelidius variegatus and daisy were used as chrysanthemum yellows hosts, Scaphoideus titanus and broad bean as 'flavescence dorée' hosts. Phytoplasma concentration was measured three times in insects and four in plants, at different days after acquisition and inoculation, respectively. Latent period in the vector was also evaluated for both phytoplasmas under the two conditions. On average, phytoplasma multiplication was faster under cooler conditions in insects (P1, 18-22°C; CO2 400 ppm) and under warmer conditions in plants (P2, 22-26°C; CO2 800 ppm). An influence of T and CO2 concentrations was observed for chrysanthemum yellows latency in the vector only. Results suggest that T and CO2 influence on phytoplasma multiplication is host-dependent.
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)
Full text of article
Database assignments for author(s): Domenico Bosco, Luciana Galetto, Cristina Marzachi

Research topic(s) for pests/diseases/weeds:
transmission/dispersal of plant diseases
environment - cropping system/rotation

Pest and/or beneficial records:

Beneficial Pest/Disease/Weed Crop/Product Country Quarant.


Scaphoideus titanus
Phytoplasma asteris Chrysanthemum (genus)
Euscelidius variegatus Chrysanthemum (genus)
16SrV phytoplasma group
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