TY - INPR A1 - Hoernstein, Sebastian A1 - Özdemir, Buğra A1 - Gessel, Nico A1 - Miniera, Alessandra A. A1 - Rogalla von Bieberstein, Bruno A1 - Nilges, Lars A1 - Schweikert Farinha, Joana A1 - Komoll, Ramona A1 - Glauz, Stella A1 - Weckerle, Tim A1 - Scherzinger, Friedrich A1 - Rodríguez-Franco, Marta A1 - Müller-Schüssele, Stefanie J. A1 - Reski, Ralf T1 - A deeply conserved protease, acylamino acid-releasing enzyme (AARE), acts in ageing in 2 Physcomitrella and Arabidopsis T2 - bioRxiv N2 - Reactive oxygen species (ROS) are constant by-products of aerobic life. In excess, ROS lead to cytotoxic protein aggregates, which are a hallmark of ageing in animals and linked to age-related pathologies in humans. Acylamino acid-releasing enzymes (AARE) are bifunctional serine proteases, acting on oxidized proteins. AARE are found in all domains of life, albeit under different names, such as acylpeptide hydrolase (APEH/ACPH), acylaminoacyl peptidase (AAP), or oxidized protein hydrolase (OPH). In humans, AARE malfunction is associated with age-related pathologies, while their function in plants is less clear. Here, we provide a detailed analysis of AARE genes in the plant lineage and an in-depth analysis of AARE localization and function in the moss Physcomitrella and the angiosperm Arabidopsis. AARE loss-of-function mutants have not been described for any organism so far. We generated and analysed such mutants and describe a connection between AARE function, aggregation of oxidized proteins and plant ageing, including accelerated developmental progression and reduced life span. Our findings complement similar findings in animals and humans, and suggest a unified concept of ageing may exist in different life forms. Y1 - 2022 UR - http://publikationen.ub.uni-frankfurt.de/frontdoor/index/index/docId/85844 UR - https://nbn-resolving.org/urn:nbn:de:hebis:30:3-858441 UR - https://www.biorxiv.org/content/10.1101/2022.05.18.492440v3 IS - 2022.05.18.492440 Version 3 PB - bioRxiv ER -