Response of mycorrhizal periwinkle plants to aster yellows phytoplasma infection |
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Authors: | Maria Kamińska Krzysztof Klamkowski Hanna Berniak Iwona Sowik |
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Institution: | (1) Department of Plant Protection, Research Institute of Pomology and Floriculture, 96-100 Skierniewice, Poland;(2) Department of Irrigation and Protected Cultivation, Research Institute of Pomology and Floriculture, 96-100 Skierniewice, Poland;(3) Department of Physiology and Biochemistry, Research Institute of Pomology and Floriculture, 96-100 Skierniewice, Poland |
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Abstract: | The objective of our research was to assess if arbuscular mycorrhizal (AM) fungal colonization can modify the effect of infection
by two aster yellows phytoplasma strains (AY1, AYSim) in Catharanthus roseus plants. Both phytoplasma strains had a negative effect on the root fresh weight, but they differed in symptoms appearance
and in their influence on photosynthetic and transpiration rates of the periwinkle plants. AM plants showed significantly
reduced shoot fresh weight, while the transpiration rate was significantly increased. AM fungal colonization significantly
affected shoot height and fresh weight of the plants infected by each phytoplasma strains as well as the root system of plants
infected with the more aggressive AYSim phytoplasma strain. Double inoculation did not reduce the negative effects induced
with phytoplasma alone on the photosynthetic activity of phytoplasma-infected plants. |
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