This blog may help people explore some of the 'hidden' issues involved in certain media treatments of environmental and scientific issues. Using personal digital images, it's also intended to emphasise seasonal (and other) changes in natural history of the Swansea (South Wales) area. The material should help participants in field-based modules and people generally interested in the natural world. The views are wholly those of the author.
Thursday, 18 February 2021
A Confidence Trickster of a Fungus
Fusarium xyrophilum is a fungus that has an unusual propagation method (https://www.theguardian.com/science/2021/feb/17/plantwatch-fungus-creates-fake-fragrant-flowers-xyris-to-fool-bees). The fungus is found in Guyana (South America), where it infects Xyris grasses. When it infects, it stops the grass making its own flowers. It 'hijacks' the plant's reproductive system, creating fake 'flowers', made entirely of fungal material. The 'petals' of these structures, even have elements reflecting UV light (like the 'honey-guides'on flowers that attract insects to the 'nectary'). The false flowers even produce floral-like odours. Bees and other pollinators, arriving to collect nectar and pollen, become coated with fungal spores. The insects then fly off to infect other Xyris grasses. Ingenious but simply a product of evolution (this is not a cunning fungus planning world domination)!
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