Results 21 to 30 of about 24,595 (262)

A Switch in Keystone Seed-Dispersing Ant Genera between Two Elevations for a Myrmecochorous Plant, Acacia terminalis.

open access: yesPLoS ONE, 2016
The dispersal capacity of plant species that rely on animals to disperse their seeds (biotic dispersal) can alter with changes to the populations of their keystone dispersal vectors. Knowledge on how biotic dispersal systems vary across landscapes allows
Fiona J Thomson   +3 more
doaj   +1 more source

A global review on the role of small rodents and lagomorphs (clade Glires) in seed dispersal and plant establishment

open access: yesGlobal Ecology and Conservation, 2022
Zoochory is an ecologically and evolutionarily important seed dispersal type. The decline and extinction of seed-dispersing large herbivores severely threatens dispersal-driven ecosystem processes in many regions.
Laura Godó   +3 more
doaj   +1 more source

Odor of achlorophyllous plants’ seeds drives seed‐dispersing ants [PDF]

open access: yesEcology and Evolution, 2021
AbstractSeed dispersal by ants is an important means of migration for plants. Many myrmecochorous plants have specialized appendages in their seeds called elaiosome, which provides nutritional rewards for ants, and enable effective seed dispersal. However, some nonmyrmecochorous seeds without elaiosomes are also dispersed by ant species, suggesting the
Mikihisa Yamada   +2 more
openaire   +3 more sources

Antagonistic and mutualistic interactions alter seed dispersal of understory plants at forest edges

open access: yesEcosphere, 2021
Seed dispersal by ants is an important interaction in North American eastern deciduous forests, where 30–40% of understory plants are myrmecochores, with seeds that possess lipid‐rich appendages (elaiosomes) that attract seed‐dispersing ants ...
Wyatt J. Parker   +2 more
doaj   +1 more source

Hierarchical mechanisms of spatially contagious seed dispersal in complex seed‐disperser networks [PDF]

open access: yesEcology, 2014
Intra‐ and interspecific spatially contagious seed dispersal has far‐reaching implications for plant recruitment, distribution, and community assemblage. However, logistical and analytical limitations have curtailed our understanding concerning the mechanisms and resulting spatial patterns of contagious seed dispersal in most systems and, especially ...
José M. Fedriani, Thorsten Wiegand
openaire   +3 more sources

Mesopredator frugivory has no effect on seed viability and emergence under experimental conditions

open access: yesEcosphere, 2021
Members of the order Carnivora are a unique and important seed disperser who consume and deposit undamaged seeds while providing regular long‐distance seed dispersal opportunities.
John P. Draper   +4 more
doaj   +1 more source

Seed traits and burial state affect plant seed secondary dispersal mediated by rodents

open access: yesHeliyon
Seed dispersal is an important ecological process and has important implications for plant population expansion and regeneration. Seed dispersal not only reduces the probability of death due to seed density but also facilitates seedling establishment ...
Jiming Cheng   +7 more
doaj   +1 more source

Quantifying patch‐specific seed dispersal and local population dynamics to estimate population spread of an endangered plant species

open access: yesEcology and Evolution, 2021
Aim Habitat loss and fragmentation impose high extinction risk upon endangered plant species globally. For many endangered plant species, as the remnant habitats become smaller and more fragmented, it is vital to estimate the population spread rate of ...
Jinlei Zhu   +3 more
doaj   +1 more source

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

open access: yesFEBS 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   +13 more
wiley   +1 more source

Peroxidasin enables melanoma immune escape by inhibiting natural killer cell cytotoxicity

open access: yesMolecular 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   +17 more
wiley   +1 more source

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