In recent years, increased levels of stem necrosis caused by the soil-borne fungus Verticillium dahliae have been observed in sycamore maple stands in Bavaria. With microscopic images, rubber-like occlusions were detected in the vessels in the area of the necrosis, which demonstrates the barrier zone formation for pathogen defense. In the stem necrosis, by Next Generation Sequencing Verticillium sp. was detected next to other dominant secondary pathogens.
In vegetation hall trials, early senescence was observed in sycamores compared to control plants as a result of the infection with V. dahliae. An intensive wilt was also observed in the following year as well as mortality in 12 percent of the infected plants. In the infected sycamores, additive effects were found under drought stress, but no interaction effect was detected between infection with the pathogen and drought.
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In recent years, increased levels of stem necrosis caused by the soil-borne fungus Verticillium dahliae have been observed in sycamore maple stands in Bavaria. With microscopic images, rubber-like occlusions were detected in the vessels in the area of the necrosis, which demonstrates the barrier zone formation for pathogen defense. In the stem necrosis, by Next Generation Sequencing Verticillium sp. was detected next to other dominant secondary pathogens.
In vegetation hall trials, early senesc...
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