TY  - JOUR
A1  - Hornick, Thomas
A1  - Richter, Anett
A1  - Harpole, William Stanley
A1  - Bastl, Maximilian
A1  - Bohlmann, Stephanie
A1  - Bonn, Aletta
A1  - Bumberger, Jan
A1  - Dietrich, Peter
A1  - Gemeinholzer, Birgit
A1  - Grote, Rüdiger
A1  - Heinold, Bernd
A1  - Keller, Alexander
A1  - Luttkus, Marie L.
A1  - Mäder, Patrick
A1  - Motivans Švara, Elena
A1  - Passonneau, Sarah
A1  - Punyasena, Surangi W.
A1  - Rakosy, Demetra
A1  - Richter, Ronny
A1  - Sickel, Wiebke
A1  - Steffan‐Dewenter, Ingolf
A1  - Theodorou, Panagiotis
A1  - Treudler, Regina
A1  - Werchan, Barbora
A1  - Werchan, Matthias
A1  - Wolke, Ralf
A1  - Dunker, Susanne
T1  - An integrative environmental pollen diversity assessment and its importance for the Sustainable Development Goals
JF  - Plants, People, Planet
N2  - Societal Impact Statement
Pollen relates to many aspects of human and environmental health, which protection and improvement are endorsed by the United Nations Sustainable Development Goals. By highlighting these connections in the frame of current challenges in monitoring and research, we discuss the need of more integrative and multidisciplinary pollen research related to societal needs, improving health of humans and our ecosystems for a sustainable future.
Summary
Pollen is at once intimately part of the reproductive cycle of seed plants and simultaneously highly relevant for the environment (pollinators, vector for nutrients, or organisms), people (food safety and health), and climate (cloud condensation nuclei and climate reconstruction). We provide an interdisciplinary perspective on the many and connected roles of pollen to foster a better integration of the currently disparate fields of pollen research, which would benefit from the sharing of general knowledge, technical advancements, or data processing solutions. We propose a more interdisciplinary and holistic research approach that encompasses total environmental pollen diversity (ePD) (wind and animal and occasionally water distributed pollen) at multiple levels of diversity (genotypic, phenotypic, physiological, chemical, and functional) across space and time. This interdisciplinary approach holds the potential to contribute to pressing human issues, including addressing United Nations Sustainable Development Goals, fostering social and political awareness of these tiny yet important and fascinating particles.
KW  - aerobiology
KW  - allergy
KW  - diversity
KW  - environmental monitoring
KW  - food safety
KW  - paleoecology
KW  - palynology
KW  - pollination
Y1  - 2022
U6  - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:20-opus-276487
VL  - 4
IS  - 2
SP  - 110
EP  - 121
ER  - 
TY  - JOUR
A1  - Nguyen, Minh-Thu
A1  - Saising, Jongkon
A1  - Tribelli, Paula Maria
A1  - Nega, Mulugeta
A1  - Diene, Seydina M.
A1  - François, Patrice
A1  - Schrenzel, Jacques
A1  - Spröer, Cathrin
A1  - Bunk, Boyke
A1  - Ebner, Patrick
A1  - Hertlein, Tobias
A1  - Kumari, Nimerta
A1  - Härtner, Thomas
A1  - Wistuba, Dorothee
A1  - Voravuthikunchai, Supayang P.
A1  - Mäder, Ulrike
A1  - Ohlsen, Knut
A1  - Götz, Friedrich
T1  - Inactivation of farR Causes High Rhodomyrtone Resistance and Increased Pathogenicity in Staphylococcus aureus
JF  - Frontiers in Microbiology
N2  - Rhodomyrtone (Rom) is an acylphloroglucinol antibiotic originally isolated from leaves of Rhodomyrtus tomentosa. Rom targets the bacterial membrane and is active against a wide range of Gram-positive bacteria but the exact mode of action remains obscure. Here we isolated and characterized a spontaneous Rom-resistant mutant from the model strain Staphylococcus aureus HG001 (RomR) to learn more about the resistance mechanism. We showed that Rom-resistance is based on a single point mutation in the coding region of farR [regulator of fatty acid (FA) resistance] that causes an amino acid change from Cys to Arg at position 116 in FarR, that affects FarR activity. Comparative transcriptome analysis revealed that mutated farR affects transcription of many genes in distinct pathways. FarR represses for example the expression of its own gene (farR), its flanking gene farE (effector of FA resistance), and other global regulators such as agr and sarA. All these genes were consequently upregulated in the RomR clone. Particularly the upregulation of agr and sarA leads to increased expression of virulence genes rendering the RomR clone more cytotoxic and more pathogenic in a mouse infection model. The Rom-resistance is largely due to the de-repression of farE. FarE is described as an efflux pump for linoleic and arachidonic acids. We observed an increased release of lipids in the RomR clone compared to its parental strain HG001. If farE is deleted in the RomR clone, or, if native farR is expressed in the RomR strain, the corresponding strains become hypersensitive to Rom. Overall, we show here that the high Rom-resistance is mediated by overexpression of farE in the RomR clone, that FarR is an important regulator, and that the point mutation in farR (RomR clone) makes the clone hyper-virulent.
KW  - antibiotic
KW  - Gram-positive bacteria
KW  - rhodomyrtone
KW  - Staphylococcus
KW  - membrane active
Y1  - 2019
U6  - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:20-opus-224117
VL  - 10
ER  -