Results 91 to 100 of about 14,468 (156)

Metabolic pathway redundancy within the apicomplexan-dinoflagellate radiation argues against an ancient chromalveolate plastid

Communicative & Integrative Biology, 2016
The chromalveolate hypothesis presents an attractively simple explanation for the presence of red algal-derived secondary plastids in 5 major eukaryotic lineages: “chromista” phyla, cryptophytes, haptophytes and ochrophytes; and alveolate phyla ...
Ross F. Waller, Sebastian G. Gornik, Ludek Koreny, Arnab Pain   +3 more
doaj   +1 more source

Molecular evidence for ongoing complementarity and horizontal gene transfer in endosymbiotic systems of mealybugs

Frontiers in Microbiology, 2014
Intracellular bacterial supply of essential amino acids is common among sap-feeding insects, thus complementing the scarcity of nitrogenous compounds in plant phloem. This is also the role of the two mealybug endosymbiotic systems whose genomes have been
Sergio eLópez-Madrigal, Aleixandre eBeltrà, Serena eResurrección, Antonia eSoto, Amparo eLatorre, Amparo eLatorre, Andres eMoya, Andres eMoya, Rosario eGil   +8 more
doaj   +1 more source

Rings Reconcile Genotypic and Phenotypic Evolution within the Proteobacteria. [PDF]

, 2015
Although prokaryotes are usually classified using molecular phylogenies instead of phenotypes after the advent of gene sequencing, neither of these methods is satisfactory because the phenotypes cannot explain the molecular trees and the trees do not fit
de la Haba, Rafael R, Koo, HyunMin, Lake, James A, Larsen, Joseph, Pu, Yiyi, Sarna, Brooke, Sinsheimer, Janet S, Zhao, Jun   +7 more
core   +2 more sources

The roles of dispersal limitation and pre-adaptation in shaping Paraburkholderia endosymbiont frequencies in social amoeba communities

Applied and Environmental Microbiology
Endosymbiotic interactions have long played fundamental roles in shaping the evolution and diversification of eukaryotes. However, we still have a limited understanding of how ecological processes govern the distribution of endosymbionts that are still ...
James G. DuBose, Terry Uhm, Jordan Bowen, Patricia Fiedorek, Mackenzie Hoogshagen, Tamara S. Haselkorn, Susanne DiSalvo   +6 more
doaj   +1 more source

In Vitro Culture of the Insect Endosymbiont Spiroplasma poulsonii Highlights Bacterial Genes Involved in Host-Symbiont Interaction

mBio, 2018
Endosymbiotic bacteria associated with eukaryotic hosts are omnipresent in nature, particularly in insects. Studying the bacterial side of host-symbiont interactions is, however, often limited by the unculturability and genetic intractability of the ...
Florent Masson, Sandra Calderon Copete, Fanny Schüpfer, Gonzalo Garcia-Arraez, Bruno Lemaitre   +4 more
doaj   +1 more source

The Symbiosome: Legume and Rhizobia Co-evolution toward a Nitrogen-Fixing Organelle?

Frontiers in Plant Science, 2018
In legume nodules, symbiosomes containing endosymbiotic rhizobial bacteria act as temporary plant organelles that are responsible for nitrogen fixation, these bacteria develop mutual metabolic dependence with the host legume.
Teodoro Coba de la Peña, Teodoro Coba de la Peña, Elena Fedorova, Elena Fedorova, José J. Pueyo, M. Mercedes Lucas   +5 more
doaj   +1 more source

The Evolution of Cell Communication: The Road not Taken. [PDF]

, 2009
In the post-genomic era the complex problem of evolutionary biology can be tackled from the top-down, the bottom-up, or from the middle-out. Given the emergent and contingent nature of this process, we have chosen to take the latter approach, both as a ...
Rehan, VK, Torday, JS
core   +1 more source

Stochastic Fluctuations of the Facultative Endosymbiont Wolbachia due to Finite Host Population Size

Ecology and Evolution
Many insects and other animals host heritable endosymbionts that alter host fitness and reproduction. The prevalence of facultative endosymbionts can fluctuate in host populations across time and geography for reasons that are poorly understood.
Jason M. Graham, Joseph Klobusicky, Michael T. J. Hague   +2 more
doaj   +1 more source

Host-Encoded Aminotransferase Import into the Endosymbiotic Bacteria Nardonella of Red Palm Weevil

Insects
Symbiotic systems are intimately integrated at multiple levels. Host–endosymbiont metabolic complementarity in amino acid biosynthesis is especially important for sap-feeding insects and their symbionts. In weevil–Nardonella endosymbiosis, the final step
Ying Huang, Zhen-Feng Feng, Fan Li, You-Ming Hou   +3 more
doaj   +1 more source

Extending the Modern Synthesis: The evolution of ecosystems [PDF]

, 2010
The Modern Evolutionary Synthesis formalizes the role of variation, heredity, differential reproduction and mutation in population genetics. Here we explore a mathematical structure, based on the asymptotic limit theorems of information theory, that ...
Rodrick Wallace
core   +2 more sources