Articles
PRELIMINARY INVESTIGATIONS OF PIGMENT RESPONSES TO PHYLLOXERA INFESTATION
Article number
733_13
Pages
123 – 133
Language
English
Abstract
Early detection of grape phylloxera (Daktulosphaira vitifoliae) infestation is vital for the implementation of post-outbreak quarantine in Australia.
Remote sensing systems exploit changes in leaf pigment content associated with plant stress and offer a real possibility of a phylloxera-specific detection system.
Pre-visual, symptomatic changes in the pigment content of phylloxera-infested grapevine leaves were investigated using high performance liquid chromatography (HPLC) as a potential aid to improve current phylloxera detection methods.
A glasshouse trial was established to characterize the response of two grapevine varieties, Vitis vinifera Cabernet Sauvignon and Shiraz, to phylloxera infestation, in a controlled environment.
Field trials were conducted on two grapevine varieties, V. vinifera Cabernet Sauvignon and Pinot Noir, at two sites, to compare grapevine response to phylloxera infestation under field conditions.
A reduction in the leaf chlorophyll content and an increase in photoprotective pigment concentrations were observed in leaves of phylloxera-infested grapevines compared to uninfested vines.
With further investigation, the identification of grapevine leaf pigment responses to phylloxera infestation may prove useful for the rapid, non-invasive, detection of phylloxera in commercial vineyards.
Remote sensing systems exploit changes in leaf pigment content associated with plant stress and offer a real possibility of a phylloxera-specific detection system.
Pre-visual, symptomatic changes in the pigment content of phylloxera-infested grapevine leaves were investigated using high performance liquid chromatography (HPLC) as a potential aid to improve current phylloxera detection methods.
A glasshouse trial was established to characterize the response of two grapevine varieties, Vitis vinifera Cabernet Sauvignon and Shiraz, to phylloxera infestation, in a controlled environment.
Field trials were conducted on two grapevine varieties, V. vinifera Cabernet Sauvignon and Pinot Noir, at two sites, to compare grapevine response to phylloxera infestation under field conditions.
A reduction in the leaf chlorophyll content and an increase in photoprotective pigment concentrations were observed in leaves of phylloxera-infested grapevines compared to uninfested vines.
With further investigation, the identification of grapevine leaf pigment responses to phylloxera infestation may prove useful for the rapid, non-invasive, detection of phylloxera in commercial vineyards.
Publication
Authors
A.L. Blanchfield, K.S. Powell, S.A. Robinson
Keywords
grapevine phylloxera, detection, chlorophyll, carotenoids, xanthophyll cycle pigments, β-carotene, Vitis vinifera, HPLC
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