Results 31 to 40 of about 428 (163)

Characterization of the complete chloroplast genome of endangered Cycads Zamia fischeri Miq. ex Lem

open access: yesMitochondrial DNA. Part B. Resources, 2018
The whole chloroplast (cp) genome sequence of Zamia fischeri has been characterized. The cp genome length was 164,767 bp in length, with a GC content of 39.7%, containing a large single copy (LSC) of 90,226 bp, a small single copy (SSC) of 23,223 bp, and
Jin-Yan Lei   +2 more
doaj   +1 more source

Publishing trends for the Cycadales, the most threatened plant group

open access: yesJournal of Threatened Taxa, 2016
Trends in published cycad research within various fields of study were determined using proceedings from international conferences on cycad biology and Google Scholar to access the primary literature.
April N. Cascasan, Thomas E. Marler
doaj   +1 more source

Integrative phylogenomics and morphology reveal the evolution and biogeography of Encephalartos (Zamiaceae)

open access: yesJournal of Systematics and Evolution, Volume 64, Issue 2, Page 295-312, March 2026.
We aimed to conduct phylogenetic analyses of Encephalartos, a cycad genus endemic to Africa, using 3545 single‐copy nuclear genes extracted from transcriptome data, covering 64/65 of the recognized species, along with inference of divergence times using two secondary calibration points.
Sadaf Habib   +8 more
wiley   +1 more source

Distribución espacial y respuesta fototrópica de Dioon merolae (Zamiaceae) en poblaciones relictuales del centro de Chiapas, México

open access: yesBotan‪ical Sciences, 2012
Dioon merolae (Zamiaceae) es una especie arborescente, longeva, con tallos curvados e inclinados, posiblemente por fototropismo, que crece en laderas de montículos abruptos con suelos arenosos delgados.
Mario González-Espinosa   +2 more
doaj   +1 more source

Missouri Botanical Garden's cycad collection: A journey through time

open access: yesPlant Species Biology, Volume 40, Issue 6, Page 607-624, November 2025.
This article summarizes the history of the Missouri Botanical Garden's extensive cycad collection. Some of the specimens currently housed in the living collections date back well over 100 years. Cycads continue to face a myriad of threats in the wild, and their conservation in ex situ collections is of critical importance to assist in their survival ...
Benjamin E. Deloso   +3 more
wiley   +1 more source

Integrative taxonomy of the Ceratozamia mexicana Brongn. (Zamiaceae) species complex from a phylogeographic perspective

open access: yesPlant Species Biology, Volume 40, Issue 6, Page 530-546, November 2025.
Recent research has ignited a renewed interest in Ceratozamia cycads, unveiling their remarkable diversity. While previous studies primarily focused on morphology, this investigation employs a multidisciplinary approach, integrating phylogenetics, morphology, and ecological niches. Our methods identify seven distinct lineages as separate species.
Anwar Medina‐Villarreal   +2 more
wiley   +1 more source

The first occurrence of Phlebopteris dunkeri and P. woodwardii (Matoniaceae) from the middle Jurassic of Iran

open access: yesJournal of Palaeogeography, 2019
The coal horizons of the Middle Jurassic Hojedk Formation of East-Central Iran are fossiliferous, bearing numerous well-preserved fossil plants, comparable to the Shemshak Group/Formation in the Alborz Mountains in Northern Iran.
Mohammad Taghi Badihagh, Dieter Uhl
doaj   +1 more source

Preface of Special Feature “Current topics on cycad biology: Deciphering the Rosetta Stone of plant evolution.” Part II: Perspectives from natural history

open access: yesPlant Species Biology, Volume 40, Issue 6, Page 527-529, November 2025.
Often regarded as “living fossils,” cycads are well known for retaining many ancestral traits, which makes them particularly fascinating to naturalists and scientists alike. Cycads provide insights into the functional and developmental processes underlying the origin and diversification of seed plants, and they may help clarify how they colonized the ...
José Said Gutiérrez‐Ortega
wiley   +1 more source

Nuevos registros de Cycadales y Cycadeoidales del Triásico superior del río Biobío, Chile New records of Upper Triassic Cycadales and Cycadeoidales of Biobío river, Chile

open access: yesRevista Chilena de Historia Natural, 2003
Se entrega un aporte al conocimiento de las Cycadales y Cycadeoidales presentes en los sedimentos del Triásico superior de la Formación Santa Juana (Cárnico-Rético) de la Región del Biobío, Chile.
MARCELO LEPPE, PHILIPPE MOISAN
doaj  

Perspectives on Endosymbiosis in Coralloid Roots: Association of Cycads and Cyanobacteria

open access: yesFrontiers in Microbiology, 2019
Past endosymbiotic events allowed photosynthetic organisms to flourish and evolve in terrestrial areas. The precursor of chloroplasts was an ancient photosynthetic cyanobacterium.
Aimee Caye G. Chang   +5 more
doaj   +1 more source

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