A5028608357- Insect symbiosis and bacterial influences
- Plant and animal studies
- Plant Pathogenic Bacteria Studies
- Microbial Community Ecology and Physiology
- Genomics and Phylogenetic Studies
- Plant Parasitism and Resistance
- Parasite Biology and Host Interactions
- Legume Nitrogen Fixing Symbiosis
- Plant Diversity and Evolution
- Coral and Marine Ecosystems Studies
- Insect-Plant Interactions and Control
- Insect and Arachnid Ecology and Behavior
- Plant and Fungal Species Descriptions
- Evolution and Genetic Dynamics
- Environmental DNA in Biodiversity Studies
- Microbial Metabolism and Applications
- bioluminescence and chemiluminescence research
- Animal Behavior and Reproduction
- Aquaculture disease management and microbiota
- Entomopathogenic Microorganisms in Pest Control
- Bryophyte Studies and Records
- COVID-19 epidemiological studies
- Virology and Viral Diseases
- Botany and Plant Ecology Studies
- Zoonotic diseases and public health
Cornell University
2016-2025
University of Michigan
2006-2016
Google (United States)
2016
University of California, Berkeley
2015
University of Arizona
2014
Institute of Botany
2007
Chinese Academy of Sciences
2007
University of Massachusetts Amherst
2007
Phylogenetic relationships among the four major lineages of land plants (liverworts, mosses, hornworts, and vascular plants) remain vigorously contested; their resolution is essential to our understanding origin early evolution plants. We analyzed three different complementary data sets: a multigene supermatrix, genomic structural character matrix, chloroplast genome sequence using maximum likelihood, parsimony, compatibility methods. Analyses all sets strongly supported liverworts as sister...
Abstract An angiosperm phylogeny was reconstructed in a maximum likelihood analysis of sequences four mitochondrial genes, atp1, matR, nad5, and rps3, from 380 species that represent 376 genera 296 families seed plants. It is largely congruent with the angiosperms chloroplast genes atpB, matK, rbcL, nuclear 18S rDNA. The basalmost lineage consists Amborella Nymphaeales (including Hydatellaceae). Austrobaileyales follow this clade are sister to mesangiosperms, which include Chloranthaceae,...
Nucleotide sequences of seven chloroplast (atpB and rbcL, SSU LSU rDNAs), mitochondrial (atp1, rDNA), nuclear (18S rDNA) genes from 192 land plants their algal relatives were analyzed using maximum likelihood parsimony methods. Liverworts, mosses, hornworts, lycophytes, monilophytes (ferns), seed plants, angiosperms all represent strongly supported monophyletic groups. Three bryophyte lineages form a paraphyletic group to vascular with liverworts representing the sister other hornworts being...
Despite the prior use of approximately 9000 bp, deep-level relationships within angiosperm clade, Saxifragales remain enigmatic, due to an ancient, rapid radiation (89.5 110 Ma based on fossil record). To resolve these deep relationships, we constructed several new data sets: (1) 16 genes representing three genomic compartments plant cells (2 nuclear, 10 plastid, 4 mitochondrial; aligned, analyzed length = 21,460 bp) for 28 taxa; (2) entire plastid inverted repeat (IR; 26,625 17 (3) "total...
Abstract Three mitochondrial ( atp1 , matR nad5 ), four chloroplast atpB matK rbcL rpoC2 and one nuclear (18S) genes from 162 seed plants, representing all major lineages of gymnosperms angiosperms, were analyzed together in a supermatrix or various partitions using likelihood parsimony methods. The results show that Amborella + Nymphaeales constitute the first diverging lineage topology alone being sister to other angiosperms likely represents local long branch attraction artifact....
ABSTRACT Facultative endosymbionts can benefit insect hosts in a variety of ways, including context-dependent roles, such as providing defense against pathogens. The role some symbionts may be overlooked, however, when pathogen infection is transient, sporadic, or asymptomatic. facultative endosymbiont Rickettsia increases the fitness sweet potato whitefly ( Bemisia tabaci ) populations through mechanisms that are not yet understood. In this study, we investigated mediating interaction...
Abstract Ecological constraints on independent breeding are recognised as major drivers of cooperative across diverse lineages. How the prevalence and degree relates to ecological variation remains unresolved. Using a large data set nesting in Polistes wasps we demonstrate that different aspects likely be driven by climate. Whether or not species forms groups is associated with greater short‐term temperature fluctuations. In contrast, number foundresses increases more benign environments...
ABSTRACT Diverse marine fish and squid form symbiotic associations with extracellular bioluminescent bacteria. These symbionts are typically free-living bacteria large genomes, but one known lineage of has undergone genomic reduction evolution host dependence. It is not why distinct evolutionary trajectories have occurred among different luminous symbionts, all lineages previously had genome sequences available. In order to better understand patterns across diverse we de novo sequenced the...
A detailed evaluation of eight bacterial isolates from floral nectar and animal visitors to flowers shows evidence that they represent three novel species in the genus Acinetobacter . Phylogenomic analysis closest relatives these new are apis , boissieri nectaris previously described associated with bees, but high genome-wide sequence divergence defines as species. Pairwise comparisons average nucleotide identity compared known is extremely low (<83 %), thus confirming samples...
Deep-sea anglerfishes are relatively abundant and diverse, but their luminescent bacterial symbionts remain enigmatic. The genomes of two symbiont species have qualities common to vertically transmitted, host-dependent bacteria. However, a number traits suggest that these may be environmentally acquired. To determine how anglerfish we analyzed bacteria-host codivergence across six diverse genera. Most the surveyed shared symbiont. Only one other was found, which had specific relationship...
The majority of bacteria engaged in bioluminescent symbiosis are environmentally acquired and facultatively symbiotic. A few enigmatic symbionts have not been successfully cultured, which has led to speculation that they may be obligately dependent on their hosts. Here, we report the draft genome uncultured luminous symbiont an anomalopid flashlight fish, 'Candidatus Photodesmus katoptron'. is reduced by 80% compared with close relatives lacks almost all genes necessary for amino acid...
Photobacterium mandapamensis is one of three luminous species able to form species-specific bioluminescent symbioses with marine fishes. Here, we present the draft genome sequence P. strain svers.1.1, symbiont cardinal fish Siphamia versicolor, first a symbiotic, be sequenced. Analysis provides insight into differences between and other symbiotic bacteria in genes involved quorum-sensing regulation light production establishment symbiosis.
The luminous bacterial symbionts of anomalopid flashlight fish are thought to be obligately dependent on their hosts for growth and share several aspects genome evolution with unrelated obligate symbionts, including reduction. However, in contrast most bacteria, have an active environmental phase that may important symbiont transmission. Here we investigated patterns between compared free-living relatives determine if trends common also found symbionts. Two " Candidatus Photodesmus...
Pea aphids, Acyrthosiphon pisum , have the potential to increase reproduction as a defence against pathogens, though how frequently this occurs or infection with live pathogens influences response is not well understood. Here we determine minimum infective dose of an environmentally common bacterium and possible aphid pathogen, Pseudomonas syringae likelihood pathogenic effects pea aphids. Additionally, used P. investigate may alter reproductive rates. We found that oral bacterial exposure...
ABSTRACT The interdependence of diverse organisms through symbiosis reaches even the deepest parts oceans. As part DEEPEND project (deependconsortium.org) research on deep Gulf Mexico biodiversity, we profiled bacterial communities (‘microbiomes’) and luminous symbionts 36 specimens adult larval deep-sea anglerfishes suborder Ceratioidei using 16S rDNA. Transmission electron microscopy was used to characterize location in light organs (esca). Whole microbiomes, skin gut were dominated by...
The luminous bacterial symbionts of anomalopid flashlight fishes, which appear to be obligately dependent on their hosts for growth, share several evolutionary patterns with unrelated obligate bacteria. However, only one fish symbiont species has been characterized in detail, and it is therefore not known if the bacteria from other are highly divergent (a pattern common symbionts). Unlike most symbionts, symbiotic anomalopids extracellular spend time outside environment, they thought...
Strains of the well-studied plant pathogen Pseudomonas syringae show large differences in their ability to colonize plants epiphytically and inflict damage hosts. Additionally, P. can infect some sap-sucking insects at least one strain is highly virulent insects, causing death most individuals within as few four days growing high population densities insect The likelihood agricultural pest coming into contact with transient populations while feeding on high, yet ecological implications these...
Neogrollea notabilis, Jackiella curvata, Goebelobryum unguiculatum and Herzogianthus vaginatus are four leafy liverworts found in New Zealand whose phylogenetic positions uncertain. To determine their positions, we sequenced three chloroplast genes, atpB, rbcL rps4, from these taxa, compiled a 3-gene data set for 78 taxa representing all major lineages of analyzed the using both maximum likelihood parsimony methods. Our results confirmed placement within Lepidoziaceae, but did not support...
Correctly identifying the strength of selection that parasites impose on hosts is key to predicting epidemiological and evolutionary outcomes host-parasite interactions. However, behavioral changes due infection can alter capture probability infected thereby make difficult estimate by standard sampling techniques. Mark-recapture approaches, which allow researchers determine if some groups in a population are less likely be captured than others, used identify infection-driven biases. If...