Graduate Students


GregoryAnn Gregory, PhD Student

Ann joined the Sullivan Lab as a technician in August 2010 from her undergraduate degree at Occidental College to learn diverse lab protocols and be exposed to the world of marine viruses. Ann since chose to pursue a PhD, started in August 2012 – her thesis focus is the Population Genomics of 150 cyanophage isolates.



SSolonenkoSergei Solonenko, PhD Student
Sergei joined the Sullivan Lab in Spring of 2011. He is a graduate student in Evolution Ecology & Organismal Biology, and his interests include the impact of new sequencing technologies on viral metagenomics and the use of metagenomics for inference of evolutionary processes.



TrublGareth (Gary) TrublPhD Student
Gary joined the Sullivan Lab as a graduate student in Spring 2014 being co-advised by Dr. Virginia Rich (since July 2013). His thesis work focuses on the role of viruses in a climate-affected peatland across a thawing permafrost gradient in northern Sweden. He examines viral community structure and their contribution to biogeochemical cycling using ecological methods and meta-omics.



VikDean Vik, PhD Student
Dean joined the Sullivan Lab in Fall 2014 from his undergraduate degree at the University of Hawaii at Manoa. He is very interested in virus-host interactions as they influence microbial evolution and large scale ecosystem functions such as oceanic nutrient cycling. His present focus is on Archaeovirus biogeography in oxygen minimum zones.



Ahmed Zayed, PhD student
Ahmed joined the Sullivan Lab in Spring 2017 after he had finished his master and undergraduate degrees at Cairo University, Egypt. He is very interested in using multi-omics to study microbial communities and co-existing phages in their environments while focusing on phages’ modulation of community dynamics and hence the ecosystem biogeochemistry.



Liu Yunxiao, PhD student
Yunxiao joined the Sullivan Lab in Spring 2017 after he graduated from Peking University in China. He’s been working on bacterial responses to osmotic shocks as well as culturing uncultivable bacteria during his undergraduate research. He takes particular interest in how bacteria defend themselves against environmental challenges, including phage infections, and how to utilize their stress responses to develop future therapies.