More Light Please: Daphnia Benefit From Light Pollution by Increased Tolerance Toward Cyanobacterial Chymotrypsin Inhibitors
نویسندگان
چکیده
Cryptochromes are evolutionary ancient blue-light photoreceptors that part of the circadian clock in nervous system many organisms. transfer information predominant light regime to which results fast adjustment photoperiod. Therefore, is sensitive changes and can be affected by anthropogenic Artificial Light At Night (ALAN). This turn has consequences for associated behavioral processes, e.g., diel vertical migration (DVM) zooplankton. In freshwater ecosystems, zooplankton genus Daphnia performs DVM order escape optically hunting predators avoid UV light. Concomitantly, experience food-supply during DVM. play keystone role carbon-transfer next trophic level. whole ecosystem occurrence cyanobacteria blooms as reduce food quality due their production digestive inhibitors (e.g., protease inhibitors). other organisms, digestion linked clock. If this also case , expression genes should show a rhythmic following cryptochrome 2 ). We tested hypothesis demonstrated gene proteases was ALAN. Contrary our expectations, activity one type (chymotrypsins) increased indicates higher might improve diet utilization. we treated D. magna with chymotrypsin-inhibitor producing cyanobacterium found ALAN actually led an increase ’s growth rate comparison on same control conditions. conclude tolerance putatively enables populations better cyanobacterial produce chymotrypsin Anthropocene, defined pollution eutrophication.
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ژورنال
عنوان ژورنال: Frontiers in Ecology and Evolution
سال: 2022
ISSN: ['2296-701X']
DOI: https://doi.org/10.3389/fevo.2022.834422