Particulate matter increases drought vulnerability of trees: Scientists detect leaf water removal by tiny deposits

Particulate matter increases drought vulnerability of trees: Scientists detect leaf water removal by tiny deposits

Particulate matter deposits on leaves increase plant transpiration and the risk of plants suffering from drought. Particulate matter could thus be contributing more strongly to tree mortality and forest decline than previously assumed. This is suggested by results from a greenhouse study, in which tree seedlings grown in almost particulate matter free air or in unfiltered air were compared.

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