Results 21 to 30 of about 833 (187)

Spermatophyta Molecular Clock: Time Drift and Recent Acceleration. [PDF]

Plant Environ Interact
Exponential increase in the base substitution rate in recent geologic time. ABSTRACT Angiospermae radiation is widely recognized as a mid‐Cretaceous event, but the adaptive radiation of Asarum and Viola as spring ephemerals also occurred during the Quaternary. To better understand the evolution of Angiospermae through geological time, a robust and well‐
Osozawa S.
europepmc   +2 more sources

Unraveling Biogeographic Boundaries Within the Sierra Madre Oriental, México: An Endemicity Analysis Using a Taxonomically Diverse Dataset. [PDF]

Ecol Evol
We provide boundaries of the Sierra Madre Oriental in Mexico through a multi‐taxa endemicity analysis. ABSTRACT The Sierra Madre Oriental (SMO) is a significant mountain range and one of Mexico's 14 biogeographical provinces. Its delimitation has been debated.
Goyenechea Mayer-Goyenechea I, Montiel-Canales G, Márquez J, Hornung-Leoni CT, Castillo-Cerón JM, Manríquez-Morán NL.   +5 more
europepmc   +2 more sources

Cycad phylogeny predicts host plant use of Eumaeus butterflies. [PDF]

Ecol Evol, 2023
A case of tight evolution between Eumaeus herbivorous butterflies and cycads, pointing to the generality of correlated evolution and phylogenetic tracking in plant–herbivore interactions across seed plants. Abstract Eumaeus butterflies are obligate herbivores of Zamia, the most diverse neotropical genus of cycads.
Sierra-Botero L, Calonje M, Robbins RK, Rosser N, Pierce NE, López-Gallego C, Valencia-Montoya WA.   +6 more
europepmc   +2 more sources

Ceratozamia dominguezii (Zamiaceae): A New Cycad Species from Southeastern Mexico

Taxonomy, 2021
Ceratozamia dominguezii (Zamiaceae), a new species endemic to the lowland karstic tropical rainforests of southeastern Veracruz, Mexico, is described. The new species is part of the C.
Miguel Angel Pérez-Farrera, José Said Gutiérrez-Ortega, Andrew P. Vovides, Michael Calonje, Pedro Díaz-Jiménez   +4 more
doaj   +1 more source

Analysis of the extranucleolar ribonucleoprotein particles of Cycas revoluta Thunb. (Cycadaceae) and Ceratozamia mexicana Brongn. (Zamiaceae)

Botan‪ical Sciences, 2022
Background: Nuclear ribonucleoprotein particles play a key role in RNA processing and in the gene expression pathway. Interchromatin granules (GICs) involved in the metabolism of pre-messenger RNA (pre-mRNA) were described in Allium cepa and ...
Lourdes-Teresa Agredano-Moreno, María de Lourdes Segura-Valdez, Jaime Jiménez-Ramírez, Luis-Felipe Jiménez-García   +3 more
doaj   +1 more source

Estimating clade‐specific diversification rates and palaeodiversity dynamics from reconstructed phylogenies

Methods in Ecology and Evolution, Volume 14, Issue 10, Page 2575-2591, October 2023., 2023
Abstract Understanding palaeodiversity dynamics through time and space is a central goal of macroevolution. Estimating palaeodiversity dynamics has been historically addressed with fossil data because it directly reflects the past variations of biodiversity.
Nathan Mazet, Hélène Morlon, Pierre‐Henri Fabre, Fabien L. Condamine   +3 more
wiley   +1 more source

Pollen morphology of the Megamexican cycads reveals the potential of morphometrics to identify cycad genera

Botan‪ical Sciences, 2020
Background: Although pollen morphology has always been an important tool in plant systematics, the possibility of distinguishing between related taxa is still debated. A difficult case is the cycads, where their morphology and small size is very similar.
Andrew P. Vovides, Roger Guevara, Mario Coiro, Sonia Galicia, Carlos Iglesias   +4 more
doaj   +1 more source

Experimental evidence that leaf litter decomposability and flammability are decoupled across gymnosperm species

Journal of Ecology, Volume 111, Issue 4, Page 761-772, April 2023., 2023
This is the first study to comprehensively show that litter decomposability and litter bed flammability parameters are decoupled across a wide range of species. This decoupling originates from the former depending mostly on ‘size and shape spectrum’ (SSS) traits and the latter on ‘plant economics spectrum’ (PES) traits and those trait spectra being ...
Shudong Zhang, William K. Cornwell, Weiwei Zhao, Richard S. P. van Logtestijn, Eveline J. Krab, Rien Aerts, Johannes H. C. Cornelissen   +6 more
wiley   +1 more source

A new species of Ceratozamia (Zamiaceae) from Chiapas, Mexico [PDF]

Botanical Journal of the Linnean Society, 2001
Ceratozamia zoquorum sp. nov. from the northern mountains of Chiapas, Mexico, is described and illustrated. It has affinities with C. miqueliana Wendl. from Veracruz, but differs in leaf, male female cone and trunk morphology.
MIGUEL A. PÉREZ-FARRERA, ANDREW P. VOVIDES, CARLOS G. IGLESIAS   +2 more
  +4 more sources

The RadOrgMiner pipeline: Automated genotyping of organellar loci from RADseq data

Methods in Ecology and Evolution, Volume 13, Issue 9, Page 1962-1975, September 2022., 2022
Abstract Different versions of Restriction‐site‐Associated DNA sequencing (RADseq) have become powerful and popular tools in molecular ecology. Although RADseq datasets are generally regarded as representative of the nuclear genome, reduced representation genomic libraries may also sample the organellar (i.e.
Levente Laczkó, Sándor Jordán, Gábor Sramkó   +2 more
wiley   +1 more source