Results 11 to 20 of about 3,593 (196)

Chemical ecology of symbioses in cycads, an ancient plant lineage. [PDF]

New Phytol
Summary Cycads are an ancient lineage of gymnosperms that maintain a plethora of symbiotic associations from across the tree of life. They have myriad morphological, structural, physiological, chemical, and behavioral adaptations that position them as a unique system to study the evolution, ecology, and mechanism of symbiosis.
Salzman S, Bustos-Díaz ED, Whitaker MRL, Sierra AM, Cibrián-Jaramillo A, Barona-Gómez F, Villarreal Aguilar JC.   +6 more
europepmc   +2 more sources

La gerencia social en la Universidad Nacional Intercultural de la Amazonía y su relación con la implementación de una política educativa con enfoque intercultural

Lengua y Sociedad, 2021
El proceso de implementación de toda política o programa es complejo en sí mismo y puede presentar una serie de factores que dificultan su desarrollo. El establecimiento de una política educativa con enfoque intercultural no es ajeno a ello, pues —como ...
Zamia Ivon Castillo Farroñay
doaj   +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

Highly Successful Adventitious Root Formation of Zamia L. Stem Cuttings Exhibits Minimal Response to Indole-3-Butyric Acid

HortScience, 2020
The influences of indole-3-butyric acid (IBA) concentrations of 0–30 mg·g−1 on the success and speed of adventitious root development of Zamia furfuracea L.f. and Zamia integrifolia L.f. stem cuttings were determined.
Benjamin E. Deloso, Anders J. Lindström , Frank A. Camacho, Thomas E. Marler   +3 more
doaj   +1 more source

IDENTIFICATION OF SEX IN ZAMIA INERMIS USING ISSR MARKERS [PDF]

Journal of Plant Development, 2021
Zamia inermis is a dioecious cycad endemic to the State of Veracruz that is on the risk extinction. Sex-specific markers are important in understanding the mechanism of sex determination.
Lourdes Georgina IGLESIAS-ANDREU, Enrique FAVIÁN-VEGA   +1 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

Zamia inermis, the more threatened cycad of Mexico [PDF]

, 2017
Zamia inermis (Zamiaceae) es una cícada rara, endémica y actualmente listada en Peligro Crítico de Extinción. De la misma, sólo se conoce una población compuesta de tres subpoblaciones, que se encuentra distribuido en tan sólo 2,5 km2 de pastizales y ...
Iglesias Andreu, Lourdes Georgina, Octavio Aguilar, Pablo, Rivera-Fernández, Andrés, Vovides, Andrés P.   +3 more
core   +2 more sources

Foraging activity by the southern brown bandicoot (Isoodon obesulus) as a mechanism for soil turnover [PDF]

, 2012
Mammals that forage for food by biopedturbation can alter the biotic and abiotic characteristics of their habitat, influencing ecosystem structure and function.
Anderson, H., Fleming, P.A., Hardy, G.E.St.J., Valentine, L.E.   +3 more
core   +2 more sources

Fighting their last stand? A global analysis of the distribution and conservation status of gymnosperms [PDF]

, 2015
Aim: Gymnosperms are often described as a marginal and threatened group, members of which tend to be out-competed by angiosperms and which therefore preferentially persist at higher latitudes and elevations.
Bigras, Bond, Bowe, Brodribb, Carlquist, Cernusak, Chaw, Coiffard, Collen, Connor, Coomes, Coomes, Davies, Debreczy, Eckenwalder, eFloras, Enright, Ewers, Farjon, Farjon, Farjon, Feuerer, Fridley, Friedman, Gerstner, Gibson, Hastie, Henschel, Hill, Hillebrand, IUCN, Jablonski, Jenkins, Jones, Kozlowski, Kramer, Kreft, Leslie, Lomolino, Lusk, McCain, McCoy, Meyer, Mittelbach, Motomura, Mutke, Pimm, Purvis, Pärtel, R Core Team, Ran, Robinson, Rohde, Roskov, Rumeu, Rybicki, Safi, SAS Institute Inc, Sax, Soltis, Soltis, Sperry, Sperry, Stoffel, Takhtajan, Tang, Tredici, Visser, Wang, Willert, Willert, Williams, Wood, Wood, Wood, Wright, Zhao   +76 more
core   +2 more sources

Impact of Late Pleistocene-Holocene climatic fluctuations on the phylogeographic structure and historical demographics of Zamia prasina (Cycadales: Zamiaceae)

Botan‪ical Sciences, 2019
Background: Glacial periods during the Pleistocene have been hypothesized to have greatly influenced geographical patterns of genetic structure and demography of many tropical species.
Grecia Montalvo-Fernández, Lorenzo Felipe Sánchez-Teyer, Germán Carnevali, Andrew P. Vovides, Ricardo Gaytán-Legaria, Matilde Margarita Ortíz -García, Jaime Alejandro Muñoz-López, Jaime Martínez Castillo   +7 more
doaj   +1 more source