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Ancient reticulation, incomplete lineage sorting and the evolution of the pyrenoid at the dawn of hornwort diversification.
Ann Bot
January 2025
Département de Biologie, Université Laval, Canada.
Background And Aims: Resolving the phylogeny of hornworts is critical in understanding the evolution of key morphological characters that are unique to the group, including the pyrenoid. Extensive phylogenomic analyses have revealed unexpected complexities in the placement of Leiosporoceros, the previously identified sister taxon to other hornworts. We explore the role of incomplete lineage sorting (ILS) and ancient reticulation in resolving interrelationships and comprehending the diversification and evolutionary processes within hornworts.
View Article and Find Full Text PDFGlobal diversification of the common moonwort ferns (Botrychium lunaria group, Ophioglossaceae) was mainly driven by Pleistocene climatic shifts.
Ann Bot
January 2025
Department of Systematic and Evolutionary Botany, University of Zurich, Zurich, Switzerland.
Background And Aims: The cosmopolitan Botrychium lunaria group belong to the most species rich genus of the family Ophioglossaceae and was considered to consist of two species until molecular studies in North America and northern Europe led to the recognition of multiple new taxa. Recently, additional genetic lineages were found scattered in Europe, emphasizing our poor understanding of the global diversity of the B. lunaria group, while the processes involved in the diversification of the group remain unexplored.
View Article and Find Full Text PDFFilicinic Acid-Based Meroterpenoids with Antiproliferative Activity against Prostate Cancer PC-3 Cells from .
J Org Chem
January 2025
Department of Pharmacy, The First Affiliated Hospital, Jinan University, Guangzhou 510630, China.
Nine new structurally diverse filicinic acid-based meroterpenoids (-) with four kinds of carbon skeletons were isolated from the rhizomes of . Their structures, including the absolute configurations, were elucidated by comprehensive analysis of spectroscopic data, quantum chemical calculations, and single-crystal X-ray diffraction. Structurally, compounds - feature an unprecedented 6/6/5/6/6/6 hexacyclic system with a rare oxaspiro[4.
View Article and Find Full Text PDFGenomic insights into two new subspecies of strains isolated from diseased foliage in Florida.
Int J Syst Evol Microbiol
December 2024
Plant Pathology Department, University of Florida, Gainesville, FL, USA.
The genus comprises 13 species, the majority of which are plant colonizers. However, some species are occasionally isolated from environmental sources, including water and polluted soil, while others are opportunistic human pathogens. Four novel bacterial strains were isolated from diseased foliage of tomato and Boston fern in Florida, USA.
View Article and Find Full Text PDFReticulate Evolution in Japanese Sceptridium (Ophioglossaceae), including diploid, tetraploid, and hexaploid species.
Mol Phylogenet Evol
January 2025
Department of Biology, Graduate School of Science, Chiba University, Yayoi, Inage, Chiba 263-8522, Japan. Electronic address:
Homospory represents an intriguing reproductive strategy, including the potential for gametophytic selfing, considered the ultimate form of selfing. The plants of the fern genus Sceptridium (Ophioglossaceae) are generally considered to be predominantly selfing, making them suitable for analyzing speciation patterns and intraspecific variation characteristic of homosporous plants. The Sceptridium species in Japan not only exhibit variations in ploidy, including diploids, tetraploids, and hexaploids, but also pose taxonomic challenges due to morphologically distinctive forms that are difficult to be assigned to previously described species.
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