English
norskBlar i forfatter "Didriksen, Alena"
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Cuscuta campestris fine-tunes gene expression during haustoriogenesis as an adaptation to different hosts
(Journal article; Tidsskriftartikkel; Peer reviewed, 2023-09-14)The Cuscuta genus comprises obligate parasitic plants that have an unusually wide host range. Whether Cuscuta uses different infection strategies for different hosts or whether the infection strategy is mechanistically and enzymatically conserved remains unknown. To address this, we investigated molecular events during the interaction between field dodder (Cuscuta campestris) and two host species ... -
Frenulate siboglinids at high Arctic methane seeps and insight into high latitude frenulate distribution
(Journal article; Tidsskriftartikkel; Peer reviewed, 2020-01-09)Frenulate species were identified from a high Arctic methane seep area on Vestnesa Ridge, western Svalbard margin (79°N, Fram Strait) based on mitochondrial cytochrome oxidase subunit I (mtCOI). Two species were found: <i>Oligobrachia haakonmosbiensis</i>, and a new, distinct, and undescribed <i>Oligobrachia</i> species. The new species adds to the cryptic <i>Oligobrachia</i> species complex found ... -
Molecular biology and physiology of isolated chloroplasts from the algae Vaucheria
(Master thesis; Mastergradsoppgave, 2010-01)Sea slugs of the genus Elysia (e.g. E. chlorotica) are known for their ability to incorporate chloroplasts from the yellow-green alga Vaucheria litorea. These “kleptoplasts” stay active in the digestive tract of the sea slug for several months. Chloroplasts from Vaucheria litorea are also reported to be significantly more stable after in vitro isolation than chloroplasts of other algae or of higher ... -
Old drug, new wrapping – A possible comeback for chloramphenicol?
(Journal article; Tidsskriftartikkel; Peer reviewed, 2017-05-12)The antimicrobial drug chloramphenicol (CAM) exhibits activity against resistant bacteria, such as methicillin-resistant Staphylococcus aureus (MRSA). However, its use has been limited due to its toxicity. As the threat of antibiotic resistance continues to grow, a promising approach might be to increase the use of historical antimicrobial agents that demonstrate clinical efficacy, but are hampered ... -
Parasitic plant small RNA analyses unveil parasite- specific signatures of microRNA retention, loss, and gain
(Journal article; Tidsskriftartikkel; Peer reviewed, 2022-07-21)Parasitism is a successful life strategy that has evolved independently in several families of vascular plants. The genera Cuscuta and Orobanche represent examples of the two profoundly different groups of parasites: one parasitizing host shoots and the other infecting host roots. In this study, we sequenced and described the overall repertoire of small RNAs from Cuscuta campestris and Orobanche ... -
Simultaneous Oxidation of Atmospheric Methane, Carbon Monoxide and Hydrogen for Bacterial Growth
(Journal article; Tidsskriftartikkel; Peer reviewed, 2021-01-12)The second largest sink for atmospheric methane (CH<sub>4</sub>) is atmospheric methane oxidizing-bacteria (atmMOB). How atmMOB are able to sustain life on the low CH<sub>4</sub> concentrations in air is unknown. Here, we show that during growth, with air as its only source for energy and carbon, the recently isolated atmospheric methane-oxidizer <i>Methylocapsa gorgona</i> MG08 (USCα) oxidizes three ... -
Thermal acclimation of methanotrophs from the genus Methylobacter
(Journal article; Tidsskriftartikkel; Peer reviewed, 2023-01-18)Methanotrophs oxidize most of the methane (CH<sub>4</sub>) produced in natural and anthropogenic ecosystems. Often living close to soil surfaces, these microorganisms must frequently adjust to temperature change. While many environmental studies have addressed temperature effects on CH<sub>4</sub> oxidation and methanotrophic communities, there is little knowledge about the physiological adjustments ...
