The role of the rootstocks Kober 5BB, 420A and SO4 in 'bois noir' (BN) phytoplasma transmission was investigated in cuttings, named 'trionti', created by grafting a BN-infected grapevine cane (inoculum source) and a healthy grapevine bud grafted onto a healthy rootstock. Typical grapevine yellows symptoms were observed on five originally healthy grapevine sprouts, and specific real-time PCR analyses confirmed the presence of BN phytoplasmas. These findings evidenced that BN phytoplasma translocated from the infected cane to the healthy bud through the rootstock, highlighting the possible rootstock role in spreading BN phytoplasma in the nurseries.
Bois noir’ phytoplasma can be transmitted to healthy Vitis vinifera L. plants by rootstocks / A. ZORLONI, F. QUAGLINO, N. MORI, G. ZANINI, P.A. BIANCO. - In: BULLETIN OF INSECTOLOGY. - ISSN 1721-8861. - 64:SUPPLEMENT(2011), pp. S185-S186. ((Intervento presentato al 2. convegno International Phytoplasmologist Working Group Meeting (IPWG) tenutosi a Neustadt/Weinstrasse (Germany) nel 2011.
Bois noir’ phytoplasma can be transmitted to healthy Vitis vinifera L. plants by rootstocks
A. ZORLONIPrimo
;F. QUAGLINOSecondo
;P.A. BIANCOUltimo
2011
Abstract
The role of the rootstocks Kober 5BB, 420A and SO4 in 'bois noir' (BN) phytoplasma transmission was investigated in cuttings, named 'trionti', created by grafting a BN-infected grapevine cane (inoculum source) and a healthy grapevine bud grafted onto a healthy rootstock. Typical grapevine yellows symptoms were observed on five originally healthy grapevine sprouts, and specific real-time PCR analyses confirmed the presence of BN phytoplasmas. These findings evidenced that BN phytoplasma translocated from the infected cane to the healthy bud through the rootstock, highlighting the possible rootstock role in spreading BN phytoplasma in the nurseries.
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