Results 51 to 60 of about 217,581 (286)

Evaluation of the Potential Seed Dispersal Effectiveness of Malus sieversii (Lebed.) M. Roem. by Cattle

Diversity, 2023
The success of plant reproduction is highly dependent on effective seed dispersal. This study aimed to evaluate the potential seed dispersal effectiveness of cattle for Malus sieversii. The impact of cattle on the dispersal quantity and dispersal quality
Shilin Bai, Jiang Xu, Yaya Lv, Xiaojun Shi, Dunyan Tan   +4 more
doaj   +1 more source

Female dispersal and isolation-by-distance of Nasonia vitripennis populations in a local mate competition context [PDF]

, 2009
Dispersal behavior directly influences the level of inbreeding, but the effect of inbreeding avoidance on dispersal is less well studied. The parasitoid wasp Nasonia vitripennis (Walker) (Hymenoptera: Chalcidoidea: Pteromalidae) is known to mate ...
Antolin, Bijlsma, Burton-Chellew, Cockerham, Darling, Drapeau, Fisher, Frank, Frank, Godfray, Greeff, Grillenberger, Grillenberger, Hamilton, Harrison, Hedrick, Henter, Herre, Kuske, Lehmann, Luna, Meirmans, Molbo, Nauta, Nei, Papaj, Quicke, R Development Core Team, Reece, Sallam, Shuker, Shuker, Shuker, Taylor, Werren, Werren, Whiting, Zavodna   +37 more
core   +2 more sources

New radiocarbon dates from the Bapot-1 site in Saipan and Neolithic dispersal by stratified diffusion [PDF]

, 2010
The colonisation of the Mariana Islands in Western Micronesia is likely to represent an early ocean dispersal of more than 2000 km. Establishing the date of human arrival in the archipelago is important for modelling Neolithic expansion in Island ...
Carson, Mike, Clark, Geoffrey, O’Day, Patrick, Petchey, Fiona, Winter, Olaf   +4 more
core   +1 more source

Niche shifts after long-distance dispersal events in bipolar sedges (Carex, Cyperaceae) [PDF]

, 2017
PREMISE OF THE STUDY: Bipolar species represent the greatest biogeographical disjunction on Earth, raising many questions about the colonization and adaptive processes behind such striking distribution.
Escudero Lirio, Marcial, González Moreno, Pablo, Rodríguez Sánchez, Francisco, Villaverde, Tamara   +3 more
core   +1 more source

The newfound relationship between extrachromosomal DNAs and excised signal circles

FEBS Letters, EarlyView.
Extrachromosomal DNAs (ecDNAs) contribute to the progression of many human cancers. In addition, circular DNA by‐products of V(D)J recombination, excised signal circles (ESCs), have roles in cancer progression but have largely been overlooked. In this Review, we explore the roles of ecDNAs and ESCs in cancer development, and highlight why these ...
Dylan Casey, Zeqian Gao, Joan Boyes
wiley   +1 more source

A methionine‐lined active site governs carbocation stabilization and product specificity in a bacterial terpene synthase

FEBS Letters, EarlyView.
This study reveals a unique active site enriched in methionine residues and demonstrates that these residues play a critical role by stabilizing carbocation intermediates through novel sulfur–cation interactions. Structure‐guided mutagenesis further revealed variants with significantly altered product profiles, enhancing pseudopterosin formation. These
Marion Ringel, Carl P. O. Helmer, Shani Zev, Ronja Driller, Emily Buhr, Markus Reinbold, Renana Schwartz, Gabriel Foley, Mikael Boden, Daniel Garbe, Gerhard Schenk, Dan Thomas Major, Bernhard Loll, Thomas Brück   +13 more
wiley   +1 more source

Dispersal: a matter of scale [PDF]

, 2018
Population density around the natal site is often invoked as an explanation for variation in dispersal distance, with the expectation that competition for limiting resources, coupled with increased intra‐specific aggression at high densities, should ...
Amar, Armitage, Baguette, Baillie, Banks, Bitume, Bonte, Bowler, Bowman, Brown, Burnham, Calange, Cale, Clobert, Clobert, Clobert, Clutton-Brock, Courchamp, Dennhardt, Denno, Dobson, Fonseca, Forero, Fronhofer, Gadgil, Greenwood, Greenwood, Hanski, Hardey, Heinrich, Hoogland, Hovestadt, Jenkins, Katzner, Kauffman, Kim, Loe, Léna, Martin, Massot, Matthysen, Matthysen, McGrady, McPeek, Mearns, Meester, Moran, Newton, Newton, Newton, Newton, Newton, Newton, Nisbet, Otronen, Picman, R Development Core Team, Ratcliffe, Ratcliffe, Restani, Rodrigues, Ronce, Rousset, Sergio, Smith, Southwood, Sutherland, Travis, Vuren, Wiens, Wolff   +70 more
core   +1 more source

Long-distance dispersal of plant macrofossils [PDF]

New Zealand Journal of Botany, 1980
Abstract Evidence is presented for the long-distance transport of leaves or other plant fragments by streams and/or by flotation on lakes and/or by wind. Under some circumstances macroscopic floras could be transported over considerable distances before being deposited and fossilised.
openaire   +1 more source

Peroxidasin enables melanoma immune escape by inhibiting natural killer cell cytotoxicity

Molecular Oncology, EarlyView.
Peroxidasin (PXDN) is secreted by melanoma cells and binds the NK cell receptor NKG2D, thereby suppressing NK cell activation and cytotoxicity. PXDN depletion restores NKG2D signaling and enables effective NK cell–mediated melanoma killing. These findings identify PXDN as a previously unrecognized immune evasion factor and a potential target to improve
Hsu‐Min Sung, David Bickel, Lena C. M. Krause, Daria Ezeriņa, Christian Ickes, Julian Wojtachnia, Christine S. Gibhardt, Magdalena Shumanska, Khadija Wahni, Andrea Paluschkiwitz, Julia Malo Pueyo, Ekaterina Baranova, Wim Vranken, Hedwig Stanisz, Ioana Stejerean‐Todoran, Michael P. Schön, Joris Messens, Ivan Bogeski   +17 more
wiley   +1 more source

Long-distance Dispersal Patterns of Male Cerulean Warblers (Dendroica cerulea) Measured by Stable-hydrogen Isotopes

Avian Conservation and Ecology, 2007
Despite the fundamental role played by long-distance dispersal in population dynamics, the mechanisms promoting or inhibiting dispersal by migratory songbirds are poorly understood.
M. Katherine. Girvan, Jason Jones, D. Ryan. Norris, Jennifer J. Barg, T. Kurt. Kyser, Raleigh J. Robertson   +5 more
doaj   +1 more source