A new vesselless angiosperm stem with a cambial variant from the Upper Cretaceous of Antarctica [PDF]
Acta Palaeontologica Polonica, 2020 We sectioned a permineralized stem preserved in marine calcareous concretions from the Campanian (Upper Cretaceous) of James Ross Island, Antarctic Peninsula using the cellulose-acetate peel technique.
M. Laura Pipo +2 more
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Complete chloroplast genome of Chloranthus henryi (chloranthaceae) [PDF]
Mitochondrial DNA. Part B. Resources, 2019 The complete chloroplast genome of Chloranthus henryi, an important traditional Chinese herbal medicine, was sequenced and characterized in this study. The genome size is 157,990 bp in length with 37.3% GC content.
XueDie Liu +3 more
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Is there silicon in flowers and what does it tell us? [PDF]
Ecol Evol, 2023 Whether flowers accumulate Si and what the implications may be was largely unknown. We analysed the flowers separated into their different anatomical parts, and leaves of different taxa. We conclude that flowers contain Si, in large amounts for some species, and hence the function of this element warrants more attention.
Schoelynck J +3 more
europepmc +2 more sources
Causes of delayed angiosperm diversification: The photosynthetic revolution, increased opportunity costs of anti-herbivore defenses, selection for qualitative toxins, and acceleration of plant-herbivore coevolution. [PDF]
Am J BotAbstract Why did it take so long for angiosperms to diversify after they arose? Here I consider the indirect but potentially crucial impact of the “photosynthetic revolution” on plant–herbivore coevolution. Increased vein density in fossil leaves implies a doubling in photosynthesis 125–100 million years ago.
Givnish TJ.
europepmc +2 more sources
The Saururus chinensis genome provides insights into the evolution of pollination strategies and herbaceousness in magnoliids. [PDF]
Plant J, 2023 SUMMARY Saururus chinensis, an herbaceous magnoliid without perianth, represents a clade of early‐diverging angiosperms that have gone through woodiness–herbaceousness transition and pollination obstacles: the characteristic white leaves underneath inflorescence during flowering time are considered a substitute for perianth to attract insect ...
Xue JY +12 more
europepmc +2 more sources
Spermatophyta Molecular Clock: Time Drift and Recent Acceleration. [PDF]
Plant Environ InteractExponential increase in the base substitution rate in recent geologic time. ABSTRACT Angiospermae radiation is widely recognized as a mid‐Cretaceous event, but the adaptive radiation of Asarum and Viola as spring ephemerals also occurred during the Quaternary. To better understand the evolution of Angiospermae through geological time, a robust and well‐
Osozawa S.
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High-molecular-weight DNA extraction for long-read sequencing of plant genomes: An optimization of standard methods. [PDF]
Appl Plant Sci, 2023 Abstract Premise Developing an effective and easy‐to‐use high‐molecular‐weight (HMW) DNA extraction method is essential for genomic research, especially in the era of third‐generation sequencing. To efficiently use technologies capable of generating long‐read sequences, it is important to maximize both the length and purity of the extracted DNA ...
Kang M +5 more
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Phenolic metabolism in Sarcandra glabra is mediated by distinct BAHD hydroxycinnamoyltransferases. [PDF]
Plant JSignificance Statement Four genes and enzymes involved in the formation of hydroxycinnamoyl esters with shikimic, quinic, hydroxyphenyllactic, and benzoic acids as well as amides with hydroxyanthranilic and d‐amino acids were identified in Sarcandra glabra (Chloranthaceae), placed in a sister clade of the magnoliids.
Bömeke P, Petersen M.
europepmc +2 more sources
Frontiers in Cell and Developmental Biology, 2022 Molecular phylogenetic analyses have revealed a superclade of mesangiosperms with five extant lineages: monocots, eudicots, magnoliids, Ceratophyllum and Chloranthaceae. Both Ceratophyllum and Chloranthaceae are ancient lineages with a long fossil record;
Dmitry D. Sokoloff +6 more
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Plastid phylogenomic insights into relationships of all flowering plant families. [PDF]
BMC Biol, 2021 Background Flowering plants (angiosperms) are dominant components of global terrestrial ecosystems, but phylogenetic relationships at the familial level and above remain only partially resolved, greatly impeding our full understanding of ...
Li HT +22 more
europepmc +3 more sources