Todd Lajeunesse
Professor of Biology
-
327 Mueller Lab
University Park, PA - tcl3@psu.edu
- 814-863-2038
Research Summary
Microbial Ecology and Evolution
Huck Affiliations
Links
Publication Tags
Ecology Coral Reefs Symbiodinium Anthozoa Coral Corals Symbiosis Dinoflagellida Endosymbionts Symbionts Miozoa Reefs Symbiont Dinoflagellate Phylogeny Temperature Population Genetics Water Ecosystem Hot Temperature Sampling Coral Reef Ribosomal Dna Adaptive Radiation Genetic MarkersMost Recent Papers
Considerations for maximizing the adaptive potential of restored coral populations in the western Atlantic
Iliana B. Baums, Andrew C. Baker, Sarah W. Davies, Andréa G. Grottoli, Carly D. Kenkel, Sheila A. Kitchen, Ilsa B. Kuffner, Todd C. LaJeunesse, Mikhail V. Matz, Margaret W. Miller, John E. Parkinson, Andrew A. Shantz, 2019, Ecological Applications
Host–symbiont combinations dictate the photo-physiological response of reef-building corals to thermal stress
Kenneth D. Hoadley, Allison M. Lewis, Drew C. Wham, D. Tye Pettay, Chris Grasso, Robin Smith, Dustin W. Kemp, Todd C. Lajeunesse, Mark E. Warner, 2019, Scientific reports
SymPortal
Benjamin C.C. Hume, Edward G. Smith, Maren Ziegler, Hugh J.M. Warrington, John A. Burt, Todd C. LaJeunesse, Joerg Wiedenmann, Christian R. Voolstra, 2019, Molecular Ecology Resources on p. 1063-1080
Photosynthesis by symbiotic sponges enhances their ability to erode calcium carbonate
Michelle Achlatis, Christine H.L. Schönberg, Rene M. van der Zande, Todd C. LaJeunesse, Ove Hoegh-Guldberg, Sophie Dove, 2019, Journal of Experimental Marine Biology and Ecology on p. 140-149
New Species of Closely Related Endosymbiotic Dinoflagellates in the Greater Caribbean have Niches Corresponding to Host Coral Phylogeny
Allison M. Lewis, Andrea N. Chan, Todd C. Lajeunesse, 2019, Journal of Eukaryotic Microbiology on p. 469-482
Systematic Revision of Symbiodiniaceae Highlights the Antiquity and Diversity of Coral Endosymbionts
Todd C. LaJeunesse, John Everett Parkinson, Paul W. Gabrielson, Hae Jin Jeong, James Davis Reimer, Christian R. Voolstra, Scott R. Santos, 2018, Current Biology on p. 2570-2580.e6
Extensive transcriptional variation poses a challenge to thermal stress biomarker development for endangered corals
John Everett Parkinson, Erich Bartels, Meghann K. Devlin-Durante, Caitlin Lustic, Ken Nedimyer, Stephanie Schopmeyer, Diego Lirman, Todd C. LaJeunesse, Iliana B. Baums, 2018, Molecular ecology on p. 1103-1119
Intraspecific and interspecific variation in thermotolerance and photoacclimation in Symbiodinium dinoflagellates
Erika M. Díaz-Almeyda, C. Prada, A. H. Ohdera, H. Moran, D. J. Civitello, Roberto Iglesias-Prieto, Tomas A. Carlo-Joglar, Todd C. Lajeunesse, Monica Medina, 2017, Proceedings of the Royal Society B: Biological Sciences
Sibling species of mutualistic Symbiodinium clade G from bioeroding sponges in the western Pacific and western Atlantic oceans
Blake D. Ramsby, Malcolm S. Hill, Daniel J. Thornhill, Sieuwkje F. Steenhuizen, Michelle Achlatis, Allison M. Lewis, Todd C. LaJeunesse, 2017, Journal of Phycology on p. 951-960
Biogeography and molecular diversity of coral symbionts in the genus Symbiodinium around the Arabian Peninsula
Maren Ziegler, Chatchanit Arif, John A. Burt, Sergey Dobretsov, Cornelia Roder, Todd C. LaJeunesse, Christian R. Voolstra, 2017, Journal of Biogeography on p. 674-686
Most-Cited Papers
Long-standing environmental conditions, geographic isolation and host-symbiont specificity influence the relative ecological dominance and genetic diversification of coral endosymbionts in the genus Symbiodinium
Todd C. LaJeunesse, Daniel T. Pettay, Eugenia M. Sampayo, Niphon Phongsuwan, Barbara Brown, David O. Obura, Ove Hoegh-Guldberg, William K. Fitt, 2010, Journal of Biogeography on p. 785-800
Systematic Revision of Symbiodiniaceae Highlights the Antiquity and Diversity of Coral Endosymbionts
Todd C. LaJeunesse, John Everett Parkinson, Paul W. Gabrielson, Hae Jin Jeong, James Davis Reimer, Christian R. Voolstra, Scott R. Santos, 2018, Current Biology on p. 2570-2580.e6
Host-symbiont recombination versus natural selection in the response of coral-dinoflagellate symbioses to environmental disturbance
Todd C. LaJeunesse, Robin Smith, Mariana Walther, Jorge Pinzón, Daniel T. Pettay, Michael McGinley, Matthew Aschaffenburg, Pedro Medina-Rosas, Amilcar L. Cupul-Magaña, Andrés López Pérez, Hector Reyes-Bonilla, Mark E. Warner, 2010, Proceedings of the Royal Society B: Biological Sciences on p. 2925-2934
A genetics-based description of Symbiodinium minutum sp. nov. and S. psygmophilum sp. nov. (dinophyceae), two dinoflagellates symbiotic with cnidaria
Todd C. Lajeunesse, John E. Parkinson, James D. Reimer, 2012, Journal of Phycology on p. 1380-1391
The relative significance of host-habitat, depth, and geography on the ecology, endemism, and speciation of coral endosymbionts in the genus Symbiodinium
J. Christine Finney, Daniel Tye Pettay, Eugenia M. Sampayo, Mark E. Warner, Hazel A. Oxenford, Todd C. Lajeunesse, 2010, Microbial Ecology on p. 250-263
Species delimitation of common reef corals in the genus Pocillopora using nucleotide sequence phylogenies, population genetics and symbiosis ecology
Jorge H. Pinzón, Todd C. Lajeunesse, 2011, Molecular ecology on p. 311-325
Genomes of coral dinoflagellate symbionts highlight evolutionary adaptations conducive to a symbiotic lifestyle
M. Aranda, Y. Li, Y. J. Liew, S. Baumgarten, O. Simakov, M. C. Wilson, J. Piel, H. Ashoor, S. Bougouffa, V. B. Bajic, T. Ryu, T. Ravasi, T. Bayer, G. Micklem, H. Kim, J. Bhak, T. C. LaJeunesse, C. R. Voolstra, 2016, Scientific reports
Improved resolution of reef-coral endosymbiont (Symbiodinium) species diversity, ecology, and evolution through psbA non-coding region genotyping
Todd C. LaJeunesse, Daniel J. Thornhill, 2011, PloS one
Host-specialist lineages dominate the adaptive radiation of reef coral endosymbionts
Daniel J. Thornhill, Allison M. Lewis, Drew C. Wham, Todd C. Lajeunesse, 2014, Evolution on p. 352-367
Assessing Symbiodinium diversity in scleractinian corals via next-generation sequencing-based genotyping of the ITS2 rDNA region
Chatchanit Arif, Camille Daniels, Till Bayer, Eulalia Banguera-Hinestroza, Adrian Barbrook, Christopher J. Howe, Todd C. Lajeunesse, Christian R. Voolstra, 2014, Molecular ecology on p. 4418-4433
News Articles Featuring Todd Lajeunesse
Apr 22, 2020
Iron deficiency in corals?
When iron is limited, the tiny algae that live within coral cells — which can provide the majority of a coral’s nutritional needs — change how they take in other trace metals, which could have cascading effects on vital biological functions.
Full Article
Aug 20, 2019
Biology graduate student receives three awards for outstanding presentation
Penn State biology graduate student Hannah Reich has been honored with three awards for a presentation she gave at three scientific conferences during summer 2019.
Full Article
Jul 23, 2019
How to restore a coral reef
New guidelines drafted by a consortium of concerned experts could enable corals to adapt to changing environments and help restore declining coral populations in the Caribbean.
Full Article
Jun 30, 2019
Bleached Corals Compensate For Stress By Eating More Plankton
In healthy corals, symbiotic algae housed within the coral photosynthesize during the day while the coral itself feeds on zooplankton, tiny shrimp and bug-like organisms, during the night.
Full Article
Aug 13, 2018
Algae and Coral Have Been BFFs Since the Dinosaur Age
A new study shows that the relationship between coral polyps and zooxanthellae that produces colorful coral reefs began 160 million years ago.
Full Article