Results 21 to 30 of about 487 (171)

The crystal structure of the Escherichia coli autoinducer-2 processing protein LsrF. [PDF]

PLoS ONE, 2009
Many bacteria produce and respond to the quorum sensing signal autoinducer-2 (AI-2). Escherichia coli and Salmonella typhimurium are among the species with the lsr operon, an operon containing AI-2 transport and processing genes that are up regulated in ...
Zamia Diaz, Karina B Xavier, Stephen T Miller   +2 more
doaj   +1 more source

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

Perspectivas sistemáticas de Zamia (Zamiaceae) en Megaméxico: de la taxonomía alfa a los códigos de barras genéticos

Revista Mexicana de Biodiversidad, 2011
El género Zamia en Megaméxico cuenta con 22 especies descritas y una entidad en el estatus de species dubium (Z. verschaffeltii). En las últimas décadas, el género Zamia ha recibido atención en tratamientos florísticos regionales, y de manera ...
Fernando Nicolalde-Morejón Nicolalde-Morejón, Jorge González-Astorga, Francisco Vergara-Silva, Andrew P. Vovides   +3 more
doaj   +1 more source

Stem Carbohydrate Richness in Two Cycad Species

HortScience, 2023
The pachycaulous stem of cycad plants enables the storage of abundant nonstructural carbohydrates. Cycas revoluta Thunb. and Zamia furfuracea L.f. stems were analyzed for starch and 15 sugars to determine carbohydrate richness.
Thomas E. Marler
doaj   +1 more source

Reestablishment of Zamia lawsoniana (Zamiaceae, Cycadales), an endemic species of Mexico, with first description of the ovulate strobilus

Acta Botanica Mexicana
Background and Aims: Zamia, with 86 species, is the most diverse Neotropical cycad genus. In Mexico, 18 species occur, of which 15 are endemics. These taxa are distributed from sea level to 1200 m a.s.l.
Fernando Nicolalde-Morejón, Lilí Martínez-Domínguez, Marlon Aramis González-Aguilar, Dennis Wm. Stevenson   +3 more
doaj   +1 more source

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

Mitochondrial 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, Damien Daniel Hinsinger, Guo-Feng Jiang   +2 more
doaj   +1 more source

Léxico del proceso de fabricación de vinos peruanos

Boletín de la Academia Peruana de la Lengua, 2013
En esta ponencia se presentará el recojo de una parte del léxico relacionado con el proceso de fabricación de los vinos peruanos con el objetivo de lograr un conocimiento básico sobre este tema.
Zamia Ivón Castillo Farroñay
doaj   +1 more source

Zamiaceae endémicas del Perú

Revista Peruana de Biología, 2013
La familia Zamiaceae es reconocida en el Perú por presentar un género, Zamia, y cuatro especies (Brako & Zarucchi, 1993; Stevenson, 2004), todas arbustivas, con tallos cortos menores de 2 m de alto o desde un tallo subterráneo.
Blanca León
doaj   +3 more sources

Pollinator diversity and host specificity in threatened Encephalartos cycads and their implications for co‐extinction and species recovery

Functional Ecology, Volume 40, Issue 6, Page 1862-1877, June 2026.
Read the free Plain Language Summary for this article on the Journal blog. Abstract The highly threatened African cycad genus Encephalartos faces severe threats such as habitat loss and poaching. In addition, the lack of sexual recruitment due to the absence of pollinators (pollinator collapse) has emerged as another major threat.
Paul D. Janse van Rensburg, Terence N. Suinyuy, John S. Donaldson   +2 more
wiley   +1 more source

Molecular and Morphological Phylogenetic Analyses of New World Cycad Beetles: What They Reveal about Cycad Evolution in the New World

Diversity, 2018
Two major lineages of beetles inhabit cycad cones in the New World: weevils (Curculionoidea) in the subtribe Allocorynina, including the genera Notorhopalotria Tang and O’Brien, Parallocorynus Voss, Protocorynus O’Brien and Tang and ...
William Tang, Guang Xu, Charles W. O’Brien, Michael Calonje, Nico M. Franz, M. Andrew Johnston, Alberto Taylor, Andrew P. Vovides, Miguel Angel Pérez-Farrera, Silvia H. Salas-Morales, Julio C. Lazcano-Lara, Paul Skelley, Cristina Lopez-Gallego, Anders Lindström, Stephen Rich   +14 more
doaj   +1 more source