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The planktonic freshwater ciliate Balanion planctonicum (Ciliophora, Prostomatea): A cryptic species complex or a "complex species"?
J Eukaryot Microbiol
January 2025
Limnological Station, Department of Plant and Microbial Biology, University of Zurich, Kilchberg, Switzerland.
The globally distributed ciliate Balanion planctonicum is a primary consumer of phytoplankton spring blooms. Due to its small size (~20 μm), identification and quantification by molecular tools is preferable as an alternative to the laborious counting of specimen in quantitative protargol stains. However, previous sequencing of the 18S rDNA V9 region of B.
View Article and Find Full Text PDFIron limitation triggers roseoceramide biosynthesis and membrane remodeling in marine roseobacter.
Proc Natl Acad Sci U S A
January 2025
Department of Chemistry, Princeton University, Princeton, NJ 08544.
Chemical communication between marine bacteria and their algal hosts drives population dynamics and ultimately determines the fate of major biogeochemical cycles in the ocean. To gain deeper insights into this small molecule exchange, we screened niche-specific metabolites as potential modulators of the secondary metabolome of the roseobacter, . Metabolomic analysis led to the identification of a group of cryptic lipids that we have termed roseoceramides.
View Article and Find Full Text PDFHow many do we need? Meeting the challenges of studying the microbiome of a cryptic insect in an orchard.
Front Microbiol
January 2025
Centre Armand Frappier Sante Biotechnologie, Institut National de la Recherche Scientifique, Laval, QC, Canada.
The minimal sampling effort required to report the microbiome composition of insect surveyed in natural environment is often based on empirical or logistical constraints. This question was addressed with the white pine cone beetle, (Schwarz), a devastating insect pest of seed orchards. It attacks and stop the growth of the cones within which it will spend its life, on the ground.
View Article and Find Full Text PDFUnlocking hidden treasures: the evolution of high-throughput mass spectrometry in screening for cryptic natural products.
Nat Prod Rep
January 2025
Department of Chemistry, Princeton University, Princeton, New Jersey 08544, USA.
Covering: 1994 to 2024Historically, microbial natural product discovery has been predominantly guided by biological activity from crude microbial extracts with metabolite characterization proceeding one molecule at a time. Despite decades of bioactivity-guided isolations, genomic evidence now suggests that we have only accessed a small fraction of the total natural product potential from microorganisms and that the products of the vast majority of biosynthetic pathways remain to be identified. Here we describe recent advancements that have enabled high-throughput mass spectrometry and comparative metabolomics, which in turn facilitate high-throughput natural product discovery.
View Article and Find Full Text PDFUncovering cryptic species diversity of () associated with from Thailand.
Fungal Syst Evol
December 2024
National Center for Genetic Engineering and Biotechnology (BIOTEC), National Science and Technology Development Agency (NSTDA), 111 Thailand Science Park, Phahonyothin Road, Khlong Nueng, Khlong Luang, Pathum Thani, 12120, Thailand.
This study advances our understanding of , an extensively studied entomopathogenic fungus within the , particularly in Thailand. We introduce seven novel species associated with - , , , , , , and . Remarkably, , , and exhibit ascomata on the subterminal region of the stromata, with the asexual form appearing at the apex of the stipe, reminiscent of .
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