Results 31 to 40 of about 16,393 (262)

The case of Darwinylus marcosi (Insecta: Coleoptera: Oedemeridae): A Cretaceous shift from a gymnosperm to an angiosperm pollinator mutualism

open access: yesCommunicative & Integrative Biology, 2017
Abundant gymnosperm pollen grains associated with the oedemerid beetle Darwinylus marcosi Peris, 2016 were found in Early Cretaceous amber from Spain. This discovery provides confirmatory evidence for a pollination mutualism during the mid Mesozoic for ...
David Peris   +5 more
doaj   +1 more source

The importance of sampling standardization for comparisons of insect herbivory in deep time: a case study from the late Palaeozoic [PDF]

open access: yesRoyal Society Open Science, 2018
Sampling standardization has not been fully addressed for the study of insect herbivory in the fossil record. The effects of sampling within a single locality were explored almost a decade ago, but the importance of sampling standardization for ...
Sandra R. Schachat   +2 more
doaj   +1 more source

Comparative in silico analysis of SSRs in coding regions of high confidence predicted genes in Norway spruce (Picea abies) and Loblolly pine (Pinus taeda) [PDF]

open access: yes, 2015
Background: Microsatellites or simple sequence repeats (SSRs) are DNA sequences consisting of 1-6 bp tandem repeat motifs present in the genome. SSRs are considered to be one of the most powerful tools in genetic studies.
García-Gil, Maria Rosario   +3 more
core   +2 more sources

Diurnal variations in the thickness of the inner bark of tree trunks in relation to xylem water potential and phloem turgor

open access: yesPlant-Environment Interactions, 2021
Why this research Matters The inner bark plays important roles in tree stems, including radial exchange of water with the xylem and translocation of carbohydrates.
Daniel Epron   +4 more
doaj   +1 more source

Error, bias, and long-branch attraction in data for two chloroplast photosystem genes in seed plants [PDF]

open access: yes, 2000
Sequences of two chloroplast photosystem genes, psaA and psbB, together comprising about 3,500 bp, were obtained for all five major groups of extant seed plants and several outgroups among other vascular plants.
Brady, Siobhan   +4 more
core   +2 more sources

Effect of Host, Environment and Fungal Growth on Fungal Leaf Endophyte Communities in Taiwan

open access: yesJournal of Fungi, 2020
Fungal endophytes inhabit plant tissues without causing disease symptoms. They are highly diverse and distributed globally in all plants that have been investigated.
Yu-Ling Huang
doaj   +1 more source

Recent advances on phylogenomics of gymnosperms and a new classification

open access: yesPlant Diversity, 2022
Living gymnosperms comprise four major groups: cycads, Ginkgo, conifers, and gnetophytes. Relationships among/within these lineages have not been fully resolved.
Yong Yang   +8 more
doaj   +1 more source

First palynologic record of the Cretaceous La Yesera Formation (Salta Group), northwestern Argentina [PDF]

open access: yes, 2014
Thirty-four taxa were documented from six palynologically productive samples of the La Yesera Formation (Brealito and Don Bartolo Members) in the Pucará locality (Salta Province, northwestern Argentina).
Narvaez, Paula Liliana   +2 more
core   +1 more source

A Reference Genome Sequence for Giant Sequoia

open access: yesG3: Genes, Genomes, Genetics, 2020
The giant sequoia (Sequoiadendron giganteum) of California are massive, long-lived trees that grow along the U.S. Sierra Nevada mountains. Genomic data are limited in giant sequoia and producing a reference genome sequence has been an important goal to ...
Alison D. Scott   +13 more
doaj   +1 more source

New evidence for the age of the Athol Formation (Middle Jurassic : Bajocian) in the Tusk-1 and Tusk-2 wells, offshore Carnarvon Basin, Western Australia [PDF]

open access: yes, 2010
The co-occurrence of ammonites with palynomorphs in the Athol Formation of the Tusk-1 and Tusk-2 wells drilled in the offshore Carnarvon Basin, Western Australia confirms the Early Bajocian (Middle Jurassic) age of the Dissiliodinium caddaense ...
Darbyshire, D.P. Fiona   +2 more
core   +1 more source

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