Results 1 to 10 of about 873 (159)

Phylotranscriptomics Shed Light on Intrageneric Relationships and Historical Biogeography of Ceratozamia (Cycadales) [PDF]

open access: yesPlants, 2023
Ceratozamia Brongn. is one of the species-rich genera of Cycadales comprising 38 species that are mainly distributed in Mexico, with a few species reported from neighboring regions.
Sadaf Habib   +6 more
doaj   +3 more sources

The complete chloroplast genome of Microcycas calocoma (Miq.) A. DC. (Zamiaceae, Cycadales) and evolution in Cycadales [PDF]

open access: yesPeerJ, 2020
Cycadales is an extant group of seed plants occurring in subtropical and tropical regions comprising putatively three families and 10 genera. At least one complete plastid genome sequence has been reported for all of the 10 genera except Microcycas ...
Aimee Caye G. Chang   +7 more
doaj   +3 more sources

Monograph of Ceratozamia (Zamiaceae, Cycadales): an endangered genus [PDF]

open access: yesPhytoKeys, 2022
Ceratozamia (Zamiaceae, Cycadales), is a member one of the most endangered seed plant groups. Species of Ceratozamia grow from near sea level up to 2,100 meters in Mexico and Mesoamerica.
Lilí Martínez-Domínguez   +3 more
doaj   +4 more sources

The complete mitochondrial genome of Zamia integrifolia uncovers distinct patterns of genomic turnover and repeat expansion in Zamiaceae [PDF]

open access: yesFrontiers in Plant Science
IntroductionGymnosperm mitochondrial genomes exhibit substantial variation in size and structure, yet the evolutionary dynamics of Cycadales remain insufficiently explored beyond the genus Cycas.MethodsWe assembled the complete mitochondrial genome of ...
Zhaowu Zhang   +8 more
doaj   +2 more sources

A comprehensive phylogenomic framework for cycads (Cycadales) [PDF]

open access: yesPhytoKeys
Here we present a time-calibrated phylogeny of 346 cycad accessions, covering ≈86% of the 380 accepted species, across all 10 extant genera, inferred from 1,409 single-copy nuclear loci (411,345 amino acid sites) derived from transcriptome and genome ...
Michael Calonje   +2 more
doaj   +4 more sources

Discovery of Cyanobacteria Associated with Cycads and Description of Three Novel Species in Desmonostoc (Nostocaceae)

open access: yesDiversity, 2023
Heterocyte-forming cyanobacteria form symbiotic relationships with several lineages of plants. Here, twenty (20) strains of endosymbiotic cyanobacteria (cyanobionts) with Nostoc-like morphologies were isolated from the highly specialized coralloid roots ...
Melissa H. Pecundo   +6 more
doaj   +2 more sources

High-performance liquid chromatography – diode array detection method validation for amentoflavone-type biflavonoids in five Encephalartos species with potential neuroprotective activity [PDF]

open access: yesScientific Reports
Ginkgo biloba is a well-known food supplement for enhancing memory and is rich in biflavonoids. Biflavonoids are predominant in the Order Cycadales (cycads). Among cycads, five Encephalartos species, E. ferox, E. kisambo, E. laurentianus, E.
Zainab G. El-Natory   +4 more
doaj   +2 more sources

Earliest evidence of granivory from China (Shanxi Formation) points to seeds as a food source and nursing habitat for insects in the earliest Permian humid tropical forests of Cathaysia. [PDF]

open access: yesPLoS ONE
Three types of plant-insect interactions are identified on seeds from the lower Permian (Asselian) Shanxi and lower Shihhotse formations of the Taiyuan district, North China.
Artai A Santos   +2 more
doaj   +2 more sources

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