Recovery of Vitis vinifera L. cv. ‘Kékfrankos’ from ‘bois noir’ disease
Autor: | Péter Teszlák, Gábor Jakab, Anikó Mátai |
---|---|
Rok vydání: | 2019 |
Předmět: |
0106 biological sciences
0301 basic medicine Host (biology) Plant Science Disease Horticulture Biology Photosynthesis biology.organism_classification 01 natural sciences 03 medical and health sciences 030104 developmental biology Phytoplasma Flavescence dorée Candidatus Phytoplasma solani Vitis vinifera Agronomy and Crop Science Bacteria 010606 plant biology & botany |
Zdroj: | European Journal of Plant Pathology. 156:987-991 |
ISSN: | 1573-8469 0929-1873 |
Popis: | Investigation of diseases caused by phytoplasmas, a group of cell-wall-less gram-positive bacteria has received significant attention in plant pathology. Grapevine is a host of two, genetically distinct phytoplasmas: Line Flavescence dorée (FD) phytoplasma associated to ‘flavescence dorée’ and ‘Candidatus Phytoplasma solani’ responsible for ‘bois noir’ (BN) disease. In the current study, we focused on BN diseased grapevines (Vitis vinifera L. cv. ‘Kékfrankos’), measured their photosynthetic performance and leaf hydrogen peroxide (H2O2) concentration. The latter is generally considered as a key molecule in the process of ‘recovery’ which is a spontaneous and unpredictable long-term remission of disease symptoms. This phenomenon also occurred during the time of our experiment. Infection resulted in reduced gas exchange performance and maximum quantum efficiency of PSII with an increased regulated non-photochemical quenching of PSII and H2O2 concentration. Changes in gas exchange seem to be a systemic response, while reduced photochemistry is a local response to ‘Ca. P. solani’ infection. H2O2 accumulation in BN phytoplasma infected plants, unlike in FD disease, was found to be a typical response to the appearance of a biotic stressor. |
Databáze: | OpenAIRE |
Externí odkaz: |