Abstract
Verticillium dahliae alters water status and consequently, growth and production of pepper plants. On the other hand, arbuscular mycorrhizal fungi (AMF) can reduce damage caused by specific soil-borne plant pathogens and improve drought resistance of pepper. Therefore, one objective of this research was to assess if AMF can modify the development of Verticillium-wilt in pepper plants. A second objective was to study the influence of plant phenology at the moment when V. dahliae was inoculated on the possible biocontrol of the disease by AMF. Results suggested that AMF reduce the deleterious effect of V. dahliae on pepper growth and yield. However, bioprotection against Verticillium-wilt was conditioned by plant phenology at the moment of pathogen attack. The highest efficacy of AMF occurred when V. dahliae was inoculated during the vegetative stage of plants. AMF allowed leaf relative water content to be maintained for longer and delayed both the appearance of disease symptoms and the decrease of photosynthesis in Verticillium-inoculated plants. These benefits on plant physiology increased pepper yield.
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Idoia, G., Nieves, G. & Jone, A. Plant Phenology Influences the Effect of Mycorrhizal Fungi on the Development of Verticillium-induced Wilt in Pepper. European Journal of Plant Pathology 110, 227–238 (2004). https://doi.org/10.1023/B:EJPP.0000019790.45397.90
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DOI: https://doi.org/10.1023/B:EJPP.0000019790.45397.90