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Louise A. Lewis
University of Connecticut
77Publications
21H-index
3,455Citations
Publications 77
Newest
2018 in PhycologiaIF: 1.80
Simona Augyte1
Estimated H-index: 1
(University of Connecticut),
Louise A. Lewis21
Estimated H-index: 21
(University of Connecticut)
+ 2 AuthorsCharles Yarish29
Estimated H-index: 29
(University of Connecticut)
Abstract Saccharina latissima is a perennial kelp with a circumboreal distribution from the North Pacific to the North Atlantic coasts. Our study clarified the taxonomy of the morphologically distinct Saccharina latissima forma angustissima (Collins) A.Mathieson from the low intertidal zone on exposed islands and ledges of Casco Bay, Maine, USA. To identify genetic divergence between the two morphotypes, S. latissima and S. latissima f. angustissima, we used a multilocus phylogenetic approach in...
1 Citations Source Cite
2018 in bioRxiv
Suman Neupane4
Estimated H-index: 4
(University of Connecticut),
Karolina Fučíková14
Estimated H-index: 14
(University of Connecticut)
+ 3 AuthorsPaul O. Lewis23
Estimated H-index: 23
(University of Connecticut)
With the rapid reduction in sequencing costs of high-throughput genomic data, it has become commonplace to use hundreds of genes/sites to infer phylogeny of any study system. While sampling large number of genes has given us a tremendous opportunity to uncover previously unknown relationships and improve phylogenetic resolution, it also presents us with new challenges when the phylogenetic signal is confused by differences in the evolutionary histories of sampled genes. Given the addition of acc...
1 Citations Download PDF Cite
2018 in Nature CommunicationsIF: 12.35
François Lutzoni47
Estimated H-index: 47
(Duke University),
Michael D. Nowak10
Estimated H-index: 10
(American Museum of Natural History)
+ 11 AuthorsDavid S. Hibbett56
Estimated H-index: 56
(Clark University)
Interactions between fungi and plants, including parasitism, mutualism, and saprotrophy, have been invoked as key to their respective macroevolutionary success. Here we evaluate the origins of plant-fungal symbioses and saprotrophy using a time-calibrated phylogenetic framework that reveals linked and drastic shifts in diversification rates of each kingdom. Fungal colonization of land was associated with at least two origins of terrestrial green algae and preceded embryophytes (as evidenced by l...
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2017 in ProtoplasmaIF: 2.46
Andreas Holzinger44
Estimated H-index: 44
(University of Innsbruck),
Klaus Herburger7
Estimated H-index: 7
(University of Innsbruck)
+ 2 AuthorsUlf Karsten50
Estimated H-index: 50
(University of Rostock)
The phylogenetic placement of Prasiola calophylla, from an anthropogenic habitat previously shown to contain a novel UV sunscreen compound, was confirmed by analysis of its rbcL gene. This alga has the capacity to tolerate strong water-limiting conditions. The photosynthetic performance and ultrastructural changes under desiccation and osmotic stress were investigated. Freshly harvested thalli showed an effective quantum yield of PSII [Y(II)] of 0.52 ± 0.06 that decreased to ∼60% of the initial ...
2 Citations Source Cite
2017 in PhycologiaIF: 1.80
Shin Watanabe15
Estimated H-index: 15
(University of Toyama),
Louise A. Lewis21
Estimated H-index: 21
(University of Connecticut)
Abstract: In molecular phylogenetic trees of zoospore-producing unicellular chlorophycean algae, well-resolved lineages often do not correspond to current taxonomic categories, and therefore characterising diagnostic morphological traits of lineages can be challenging. We employed a phylogenetic framework to examine the evolution of light microscopic (LM) and transmission electron microscopic (TEM) features in the phylogroup Moewusinia and a related genus and then assessed the features that coul...
1 Citations Source Cite
Louise A. Lewis21
Estimated H-index: 21
(University of Connecticut)
The evolution of oxygenic photosynthesis by cyanobacteria was arguably one of the most significant biological events in Earth’s history, shaping the atmosphere and subsequently leading to diverse ecosystems (1). The permanent endosymbiotic merger between a cyanobacterium and a unicellular heterotrophic eukaryote in deep evolutionary time set the stage for the stunning diversity of photosynthetic eukaryotes and ecosystems seen today, giving rise to the supergroup Archaeplastida, the red, glaucoph...
3 Citations Source Cite
Shin Watanabe15
Estimated H-index: 15
(University of Toyama),
Karolina Fučíková14
Estimated H-index: 14
(University of Connecticut)
+ 1 AuthorsPaul O. Lewis23
Estimated H-index: 23
(University of Connecticut)
A resurgence of green algal taxonomy over the last decade has resulted from investigations of unusual and previously poorly sampled habitats (e.g., Neustupa et al., 2011 ; Ramos et al., 2015 ; Caisova et al., 2015 ), from the application of molecular methods to resolve cryptic taxa (e.g., Fucikova et al., 2014a ), and through taxonomic clarifi cation of known species (e.g., Sanchez-Puerta et al., 2006 ; Caisova et al., 2011 ; Hegewald et al., 2013 ; Skaloud et al., 2013b ). Even aquatic habitats...
9 Citations Source Cite
2016 in Systematic BiologyIF: 8.52
Paul O. Lewis23
Estimated H-index: 23
(University of Connecticut),
Ming-Hui Chen63
Estimated H-index: 63
(University of Connecticut)
+ 5 AuthorsDaoyuan Shi1
Estimated H-index: 1
(University of Connecticut)
Measuring the phylogenetic information content of data has a long history in systematics. Here we explore a Bayesian approach to information content estimation. The entropy of the posterior distribution compared with the entropy of the prior distribution provides a natural way to measure information content. If the data have no information relevant to ranking tree topologies beyond the information supplied by the prior, the posterior and prior will be identical. Information in data discourages c...
4 Citations Source Cite
2016 in PhycologiaIF: 1.80
Shin Watanabe15
Estimated H-index: 15
,
Hisayoshi Nozaki35
Estimated H-index: 35
+ 1 AuthorsLouise A. Lewis21
Estimated H-index: 21
Abstract: On the basis of prior phylogenetic analyses placing Gloeomonas as a lineage within the very diverse genus Chloromonas, it was hypothesized that the morphologically distinct Gloeomonas, bearing widely spaced basal bodies, evolved from ancestral organisms like Chloromonas. In addition, the phylogenetically related Chloromonas (Cr.) rubrifilum, was expected to possess traits intermediate to the two forms. To test these hypotheses, we performed detailed transmission electron microscope ana...
1 Citations Source Cite
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