{"title":"Release of ice-nucleating particles from leaves during rainfall","authors":"Franz Conen, Annika Einbock","doi":"10.1007/s00114-025-01980-6","DOIUrl":null,"url":null,"abstract":"<div><p>Plant surfaces are a major source of particles able to initiate ice formation in clouds little below 0 °C. Rainfall promotes the release of such ice-nucleating particles (INPs) from vegetation. However, the pattern of their release throughout rain events remains unexplored. Here, we investigate at a high temporal resolution INP dynamics in rain impacting and running off single leaflets of <i>Juglans regia</i> during two rain events and relate the results to total INP inventories on the leaflets. Throughout both events, leaf runoff was distinctly enriched in INPs as compared with rainwater. A large fraction of INPs washed off during rainfall was released already at the beginning of the events. Except for the highest temperature interval, less than 40% of detachable INPs from leaf surfaces had been removed after the rain events. We hypothesise that surfactant excretion of INP-producing bacteria shapes the observed pattern of release. </p></div>","PeriodicalId":794,"journal":{"name":"The Science of Nature","volume":"112 2","pages":""},"PeriodicalIF":2.1000,"publicationDate":"2025-03-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s00114-025-01980-6.pdf","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"The Science of Nature","FirstCategoryId":"6","ListUrlMain":"https://link.springer.com/article/10.1007/s00114-025-01980-6","RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"MULTIDISCIPLINARY SCIENCES","Score":null,"Total":0}
引用次数: 0
Abstract
Plant surfaces are a major source of particles able to initiate ice formation in clouds little below 0 °C. Rainfall promotes the release of such ice-nucleating particles (INPs) from vegetation. However, the pattern of their release throughout rain events remains unexplored. Here, we investigate at a high temporal resolution INP dynamics in rain impacting and running off single leaflets of Juglans regia during two rain events and relate the results to total INP inventories on the leaflets. Throughout both events, leaf runoff was distinctly enriched in INPs as compared with rainwater. A large fraction of INPs washed off during rainfall was released already at the beginning of the events. Except for the highest temperature interval, less than 40% of detachable INPs from leaf surfaces had been removed after the rain events. We hypothesise that surfactant excretion of INP-producing bacteria shapes the observed pattern of release.
期刊介绍：
The Science of Nature - Naturwissenschaften - is Springer''s flagship multidisciplinary science journal. The journal is dedicated to the fast publication and global dissemination of high-quality research and invites papers, which are of interest to the broader community in the biological sciences. Contributions from the chemical, geological, and physical sciences are welcome if contributing to questions of general biological significance. Particularly welcomed are contributions that bridge between traditionally isolated areas and attempt to increase the conceptual understanding of systems and processes that demand an interdisciplinary approach.
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