Results 21 to 30 of about 694,227 (269)

Loss of Plastid Developmental Genes Coincides With a Reversion to Monoplastidy in Hornworts

open access: yesFrontiers in Plant Science, 2022
The first plastid evolved from an endosymbiotic cyanobacterium in the common ancestor of the Archaeplastida. The transformative steps from cyanobacterium to organelle included the transfer of control over developmental processes, a necessity for the host
Alexander I. MacLeod   +5 more
doaj   +1 more source

THE MOLECULAR EVOLUTION OF ACTIN [PDF]

open access: yesGenetics, 1986
ABSTRACT We have investigated the molecular evolution of plant and nonplant actin genes comparing nucleotide and amino acid sequences of 20 actin genes. Nucleotide changes resulting in amino acid substitutions (replacement substitutions) ranged from 3-7% for all pairwise comparisons of animal actin genes with the following exceptions ...
R C, Hightower, R B, Meagher
openaire   +2 more sources

DNA Polymerases Engineered by Directed Evolution to Incorporate Nonstandard Nucleotides

open access: yesFrontiers in Microbiology, 2014
DNA polymerases have evolved for billions of years to accept natural nucleoside triphosphate substrates with high fidelity and to exclude closely related structures, such as the analogous ribonucleoside triphosphates. However, polymerases that can accept
Roberto eLaos   +2 more
doaj   +1 more source

Major Changes in Plastid Protein Import and the Origin of the Chloroplastida

open access: yesiScience, 2020
Summary: Core components of plastid protein import and the principle of using N-terminal targeting sequences are conserved across the Archaeplastida, but lineage-specific differences exist.
Michael Knopp   +3 more
doaj   +1 more source

Microbial Community Structure Driven by a Volcanic Gradient in Glaciers of the Antarctic Archipelago South Shetland

open access: yesMicroorganisms, 2021
It has been demonstrated that the englacial ecosystem in volcanic environments is inhabited by active bacteria. To know whether this result could be extrapolated to other Antarctic glaciers and to study the populations of microeukaryotes in addition to ...
Eva García-Lopez   +6 more
doaj   +1 more source

Elusive data underlying debate at the prokaryote-eukaryote divide

open access: yesBiology Direct, 2018
Background The origin of eukaryotic cells was an important transition in evolution. The factors underlying the origin and evolutionary success of the eukaryote lineage are still discussed.
Marie Gerlitz   +4 more
doaj   +1 more source

Molecular Phylogenetics and Mitochondrial Evolution [PDF]

open access: yesLife, 2021
The myth of a “typical” mitochondrial genome (mtDNA) is a rock-hard belief in the field of genetics, at least for the animal kingdom [...]
Luchetti A., Plazzi F.
openaire   +4 more sources

Plastid origin: who, when and why?

open access: yesActa Societatis Botanicorum Poloniae, 2014
The origin of plastids is best explained by endosymbiotic theory, which dates back to the early 1900s. Three lines of evidence based on protein import machineries and molecular phylogenies of eukaryote (host) and cyanobacterial (endosymbiont) genes point
Chuan Ku   +5 more
doaj   +1 more source

The future of molecular evolution [PDF]

open access: yesThe EMBO Reports, 2010
Antony Dean explores the past, present and future of evolutionary theory and our continuing efforts to explain biological patterns in terms of molecular processes and mechanisms.
openaire   +2 more sources

The legume-specific transcription factor E1 controls leaf morphology in soybean

open access: yesBMC Plant Biology, 2021
Background The leaf is a determinate organ essential for photosynthesis, whose size and shape determine plant architecture and strongly affect agronomic traits. In soybean, the molecular mechanism of leaf development is not well understood. The flowering
Yongli Li   +17 more
doaj   +1 more source

Home - About - Disclaimer - Privacy