Results 11 to 20 of about 7,052 (216)

A checklist of gymnosperm-feeding leafminers (Arthopoda, Insecta) in North America and Europe [PDF]

open access: yesBiodiversity Data Journal, 2022
The leafminers on gymnosperms receive much less attention than those on either angiosperms or ferns. Given the distinctly different leaf shape and leaf venation found in gymnosperms, they would be expected to host significantly different leafminer groups.
Taibin Chen   +2 more
doaj   +5 more sources

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

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   +3 more sources

Distribution Patterns of Gymnosperm Species along Elevations on the Qinghai–Tibet Plateau: Effects of Climatic Seasonality, Energy–Water, and Physical Tolerance Variables [PDF]

open access: yesPlants, 2023
Climate change is one of the most prominent factors influencing the spatial distribution of plants in China, including gymnosperms. Climatic factors influence gymnosperm distribution along elevational gradients on the Qinghai–Xizang (Tibet) Plateau (QTP),
Muhammad Umair   +4 more
doaj   +2 more sources

The dynamic history of gymnosperm plastomes: Insights from structural characterization, comparative analysis, phylogenomics, and time divergence [PDF]

open access: yesThe Plant Genome, 2021
Gymnosperms are among the most endangered groups of plant species; they include ginkgo, pines (Conifers I), cupressophytes (Conifers II), cycads, and gnetophytes. The relationships among the five extant gymnosperm groups remain equivocal. We analyzed 167
Lubna   +7 more
doaj   +2 more sources

False Blister Beetles and the Expansion of Gymnosperm-Insect Pollination Modes before Angiosperm Dominance. [PDF]

open access: yes, 2020
During the mid-Cretaceous, angiosperms diversified from several nondiverse lineages to their current global domination [1], replacing earlier gymnosperm lineages [2].Several hypotheses explain this extensive radiation [3], one of which involves ...
Labandeira, Conrad C.   +5 more
core   +4 more sources

Investigation Into Different Wood Formation Mechanisms Between Angiosperm and Gymnosperm Tree Species at the Transcriptional and Post-transcriptional Level

open access: yesFrontiers in Plant Science, 2021
Enormous distinctions of the stem structure and cell types between gymnosperms and angiosperms tree species are expected to cause quite different wood physical and mechanical attributes, however, the molecular mechanisms underlying the differing wood ...
Hui Li   +6 more
doaj   +1 more source

Gymnosperms on the EDGE [PDF]

open access: yesScientific Reports, 2018
AbstractDriven by limited resources and a sense of urgency, the prioritization of species for conservation has been a persistent concern in conservation science. Gymnosperms (comprising ginkgo, conifers, cycads, and gnetophytes) are one of the most threatened groups of living organisms, with 40% of the species at high risk of extinction, about twice as
Félix Forest   +14 more
openaire   +3 more sources

Comparative Analyses of Full-Length Transcriptomes Reveal Gnetum luofuense Stem Developmental Dynamics

open access: yesFrontiers in Genetics, 2021
Genus Gnetum, of which the majority species are pantropical liana, have broad industrial uses including for string, nets, and paper production. Although numerous studies have investigated anatomical structures during stem development, the underlying ...
Chen Hou   +11 more
doaj   +1 more source

Central Cell in Flowering Plants: Specification, Signaling, and Evolution

open access: yesFrontiers in Plant Science, 2020
During the reproduction of animals and lower plants, one sperm cell usually outcompetes the rivals to fertilize a single egg cell. But in flowering plants, two sperm cells fertilize the two adjacent dimorphic female gametes, the egg and central cell ...
Hong-Ju Li, Wei-Cai Yang, Wei-Cai Yang
doaj   +1 more source

Loss of the IR region in conifer plastomes: Changes in the selection pressure and substitution rate of protein‐coding genes

open access: yesEcology and Evolution, 2022
Plastid genomes (plastomes) have a quadripartite structure, but some species have drastically reduced or lost inverted repeat (IR) regions. IR regions are important for genome stability and the evolution rate.
Jingyao Ping   +5 more
doaj   +1 more source

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