Results 11 to 20 of about 283 (121)

Anticancer and Antioxidant Activities of Rhizospheric Soil Bacteria of <i>Lophocereus marginatus</i>. [PDF]

Int J Microbiol
Identification of new sources of compounds with anticancer and antioxidant potential is essential for cancer treatment. Rhizospheric bacteria have emerged as a promising source of these agents. This study is aimed at investigating the anticancer and antioxidant properties of bacteria isolated from the rhizosphere of Lophocereus marginatus.
Ramírez-Villalobos JM, Romo-Sáenz CI, Quintanilla-Licea R, Tamez-Guerra P, Pérez-González O, Estupiñan-Jiménez JR, Torres-Hernández ÁD, Rodríguez-Garza NE, Rodríguez-Padilla C, Gomez-Flores R.   +9 more
europepmc   +2 more sources

Living Away From Specialized Pollinators: The Pollination System of Cieba Pentandra in the Yucatan Peninsula. [PDF]

Ecol Evol
The pollination system of C. pentandra was addressed. This system was highly generalized. ABSTRACT Plant‐pollinator systems can exist along the gradient from extreme specialization to extreme generalization. Theoretical work predicts that high pollinator reliability may lead to specialized pollination systems, while pollinator unpredictability may ...
Dzul-Cauich H, Stoner KE, Ibarra-Cerdeña CN, Munguía-Rosas MA.   +3 more
europepmc   +2 more sources

Establishment patterns of saguaro cactus (Carnegiea gigantea) at the microsite scale help explain saguaro regeneration and distributions in heterogenous, regional habitats. [PDF]

Am J Bot
Abstract Premise Establishment of long‐lived perennial plants is a pivotal event that often leads to reproductive maturity. The population dynamics of the giant saguaro cactus (Carnegiea gigantea) have been investigated over large spatial areas, but establishment patterns have not been studied at the microsite (1 m) scale.
Breslin PB, Brown C, Búrquez A, Reichenbacher FW, Rodriguez-Buritica S, Venable DL, Goldberg DE.   +6 more
europepmc   +2 more sources

Development and Characterization of 10 Microsatellite Loci in the Giant Cardon Cactus, Pachycereus pringlei (Cactaceae)

Applications in Plant Sciences, 2014
Premise of the study: Microsatellite primers were developed for the cardon, a giant columnar cactus (Pachycereus pringlei) of the Sonoran Desert, to investigate intraspecific genetic patterns of diversity and population structure.
Carina Gutiérrez Flores, O. Adrian Lozano Garza, José L. León de la Luz, Francisco J. García de León   +3 more
doaj   +3 more sources

An updated phylogeny and adaptive evolution within Amaranthaceae s.l. inferred from multiple phylogenomic datasets. [PDF]

Ecol Evol
Our results strongly demonstrated that Amaranthaceae s.l. was clustered with monophyletic traditional Chenopodiaceae (Clades I and II) and Amaranthaceae s.s. based on multiple phylogenomic datasets. Phylogenetic analysis of adaptive evolution showed that positively selected genes played a driving role in the evolutionary direction of Amaranthaceae s.l.
Xu H, Guo Y, Xia M, Yu J, Chi X, Han Y, Li X, Zhang F.   +7 more
europepmc   +2 more sources

ESTRUCTURA ESPACIAL DE Pachycereus weberi (Coult.) Backeb. EN LA CAÑADA DEL ZOPILOTE, GUERRERO

Revista Chapingo: Serie Ciencias Forestales y del Ambiente, 2011
El propósito del presente estudio fue evaluar la estructura poblacional de Pachycereus weberi en la Cañada del Zopilote, Guerrero, México. Se estableció una parcela de observación de 50 x 50 m (2,500 m²), dividida en cuadros de 10 x 10 m para facilitar ...
Blanca Estela Linzaga-Román, Gregorio Ángeles-Pérez, Cesario Catalán-Heverástico, Patricia Hernández de la Rosa   +3 more
doaj   +3 more sources

Widespread male sterility and trioecy in androdioecious Mercurialis annua: Its distribution, genetic basis, and estimates of morph-specific fitness components. [PDF]

Am J Bot
Abstract Premise Angiosperms range in sexual system from hermaphroditism through gynodioecy and androdioecy to dioecy. Trioecy, where females and males coexist with hermaphrodites, is rare. Recently, trioecy was documented in hexaploid populations of the wind‐pollinated herb Mercurialis annua in Spain.
Nguyen MT, Martignier T, Pannell JR.
europepmc   +2 more sources

Population genomics and distribution modeling revealed the history and suggested a possible future of the endemic Agave aurea (Asparagaceae) complex in the Baja California Peninsula. [PDF]

Ecol Evol
Little is known about the phylogeography of the endemic agave species of the Baja California Peninsula. Using over 10,000 single‐nucleotide polymorphisms (SNPs) and spatial data from the Agave aurea species complex (i.e., A. aurea ssp. aurea, A. aurea ssp. promontorii, and A. aurea var. capensis), we determined genetic relationships within this complex
Klimova A, Gutíerrez-Rivera J, Ortega-Rubio A, Eguiarte LE.   +3 more
europepmc   +2 more sources

Biomechanics of the columnar cactus Pachycereus pringlei [PDF]

American Journal of Botany, 1999
We report the longitudinal variations in stiffness and bulk density of tissue samples drawn from along the length of two Pachycereus pringlei plants measuring 3.69 and 5.9 m in height to determine how different tissues contribute to the mechanical stability of these massive vertical organs.
K J, Niklas, F, Molina-Freaner, C, Tinoco-Ojanguren   +2 more
openaire   +2 more sources

Nesting resource availability for cavity adopter birds in a tropical dry forest of Central Mexico

Revista Mexicana de Biodiversidad, 2022
Nesting resources for cavity-adopter birds commonly have spatial aggregation patterns within tropical dry forests. Spatial aggregation occurs because large trees, carrying large cavities, are restricted within small semideciduous forest areas.
Jannete Medina-Estrada, Daniela Remolina-Figueroa, Patricia Ramírez-Bastida, Leopoldo D. Vázquez-Reyes   +3 more
doaj   +1 more source