The complete chloroplast genome of Microcycas calocoma (Miq.) A. DC. (Zamiaceae, Cycadales) and evolution in Cycadales [PDF]
PeerJ, 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 +6 more sources
Monograph of Ceratozamia (Zamiaceae, Cycadales): an endangered genus [PDF]
PhytoKeys, 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 +6 more sources
Phylotranscriptomics Shed Light on Intrageneric Relationships and Historical Biogeography of Ceratozamia (Cycadales) [PDF]
Plants, 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
Eobowenia gen. nov. from the Early Cretaceous of Patagonia: indication for an early divergence of Bowenia? [PDF]
BMC Evolutionary Biology, 2017 Background Even if they are considered the quintessential “living fossils”, the fossil record of the extant genera of the Cycadales is quite poor, and only extends as far back as the Cenozoic.
Mario Coiro, Christian Pott
doaj +4 more sources
Are current seed storage approaches suitable for Macrozamia fraseri (Cycadales), a temperate species used in restoration? [PDF]
Conserv Physiol, 2023 The implementation of effective storage techniques is a priority for seed banks. In this pilot investigation, we focused on understanding key traits of stored seeds from an endemic cycad impacted by mining. Preliminary results found that seeds in storage
Turner SR +5 more
europepmc +2 more sources
The first xiphydriid wood wasp in Cretaceous amber (Hymenoptera: Xiphydriidae) and a potential association with Cycadales [PDF]
Fossil Record, 2022 A new genus and species of fossil wood wasp is described and figured from mid-Cretaceous Kachin amber, representing the first occurrence of the family Xiphydriidae in the fossil record. Paraxiphydria resinata gen. et sp. nov. exhibits typical apomorphies
J. Gao +6 more
doaj +2 more sources
Taxonomy, 2023 Zamia magnifica (Zamiaceae), a new species endemic to Sierra Norte, Oaxaca, Mexico, is described. Zamia magnifica is characterized by having a rupicolous habit, pendent leaves bearing leaflets that are densely tomentose and pink to caramel in color when ...
Miguel Angel Pérez-Farrera +3 more
doaj +2 more sources
Evolutionary trends of reproductive phenotype in Cycadales: an analysis of morphological evolution in Ceratozamia. [PDF]
Ann BotBackground and Aims The size and shape of reproductive structures is especially relevant in evolution because these characters are directly related to the capacity for pollination and seed dispersal, a process that plays a basic role in evolutionary ...
Martínez-Domínguez L +5 more
europepmc +2 more sources
Mega-sized pericentromeric blocks of simple telomeric repeats and their variants reveal patterns of chromosome evolution in ancient Cycadales genomes. [PDF]
Plant J, 2022 SUMMARY Simple telomeric repeats composed of six to seven iterating nucleotide units are important sequences typically found at the ends of chromosomes. Here we analyzed their abundance and homogeneity in 42 gymnosperm (29 newly sequenced), 29 angiosperm
Vozárová R +7 more
europepmc +2 more sources
Cronología reproductora de Ceratozamia mexicana (Cycadales)
Botanical Sciences, 2000 En Cemtozamia mexicana Brongn. el desarrollo de la semilla se cumple en 24 meses desde la iniciación de los óvulos en agosto hasta el desarrollo completo del cuerpo del embrión.
María Ydelia Sánchez-Tinoco +2 more
doaj +3 more sources