Lab Members

Esther van der Knaap
Principal Investigator, email: Esther van der Knaap

Group Lab 2012

Neda Keyhaninejad

Lab manager
Neda graduated from New Mexico State University in 2012. After a post doctoral position at Ohio State, she moved to Georgia where she is working on the interactions of OVATE with target proteins and plant transformations.

email: Neda Keyhaninejad


Lei Zhang

Post doctoral researcher

Lei received her PhD in 2017 from the Max Planck in Koln, Germany. She is currently working on fruit weight and flavor variation using genomic tools.

email: Lei Zhang


Katherine Hardigree

Greenhouse and genotyping manager

Katherine received her MS in Plant Breeding, Genetics and Genomics in 2010. Katherine worked at the Georgia Genomics Facility at UGA before joining our lab. She is managing the genotyping, greenhouse and field experiments.

email: Katherine Hardigree


Qian Feng

PhD student

Qian graduated from the University of California, Davis in 2019 with a BS in Plant Sciences. She has research experience in lettuce disease resistance. Qian is currently working on fruit flavor and weight genes in tomato.

email: Qian Feng


Trent McCracken

Masters student

Trent received his BS in Plant Science from Penn State University in 2023. He is working on flavor genes in tomato.

email: Trent McCracken


Yanbing Wang

Post doctoral researcher

Yanbing conducted post doctoral research on plant reproductive biology at the University of Arizona and at Washington University. Yanbing is working on fruit shape in tomato.

email: Yanbing Wang


Tosin Olorunwo

MS student

Tosin completed her BS in Crop Science and Horticulture in 2023 from the Federal University Oye Ekiti, in Nigeria. Tosin is working on the genetic characterization of fruit flavor in tomato.

email: Tosin Olorunwo


Austin Hart

PhD student

Austin graduated from University of Central Florida in 2020 with a BS in Biology. He is interested in the genetic inheritance of tomato volatile production.

email: Austin Hart


Alani Andrews

Undergraduate Research Assistant

Alani is an undergraduate student in Psychology at UGA and plans to go to medical school in fall 2025.

email: Alani Andrews


Ranveer Singh

PhD student

Ranveer is a student with Savithri Nambeesan and often in the lab to present his work on blossom-end rot.

email: Ranveer Singh


Lindsey Curtis

Undergraduate Research Assistant

Lindsey is an undergraduate in Ecology at UGA. Lindsey is working with Neda on plant transformations.

email: Lindsey Curtis


Rebekah Maynard

PhD student

Rebekah is a visiting student in the lab who is working on her PhD with Leo Lombardini at UGA. She works on mapping fruit shape genes in our lab.

email: Rebekah Maynard


Emily Nettles

Undergraduate Research Assistant

Emily is majoring in XXX at UGA and plans to go to Dental school in fall 2025. Emily has been helping the lab with tomato harvests and processing in Florida, Athens and Blairsville this summer. Now she is settling in on research related to tomato transformation. Oh, and she is a fast swimmer and runner too!

email: Emily Nettles


Josiah Celestin

Undergraduate Research Assistant

Josiah is majoring in Health Promotion at UGA. Josiah helped with the tomato harvests in Florida, Athens and Blairsville and is interested in the mapping of tomato fruit shape genes. Josiah plans to go to medical school in fall 2027.

email: Josiah Celestin


Mark Lazzaro

Visiting Scientist

Mark is a professor at the College of Charleston and a regular in our lab. He teaches cell biology and in the summer, he often works on projects related to fruit shape. Mark is currently finishing up an extensive image analysis involving calcofluor staining and EdU labeling. Mark signs in the Charleston SC Choir and knows everything about the music scene in Athens.

email: Mark Lazzaro


Past Lab Members

NameCurrent PositionEmail
Yasin TopcuBatı Akdeniz Agricultural Research Institute, Antalya, Turkeyyasintopcu1989@gmail.com
Manoj SapkotaPost doc at Breeding Insightms3743@cornell.edu
Zach FlemingGraduate student at Univ of Nebraska zfleming3@huskers.unl.edu
Ashley SnoufferResearcher at Benson Hillashley.snouffer@gmail.com
Natacha NamphengsoneResearcher at INARInatnamph@uga.edu
Jugpreet SinghHead of Bioinformatics at LeafWorks Incyugpreet@gmail.com
Lara PereiraPost doc at the University of Sheffield, UKlara.pereira.garcia@sheffield.ac.uk
Nathan TaitanoResearcher at BASF in Sacramento CAnathan.taitano25@uga.edu
Roisin McGarryAdjunct research faculty, University of North TexasRoisin.McGarry@unt.edu
Biyao ZhangResearch associate at the National Genomics Data Center, Beijing Institute of Genomicsbiyao.zhang@foxmail.com
Qiang LiAssociate Professor, College of Horticulture Science and Engineering, Shandong Agricultural Universitylqsdau@163.com
Carmen KrausFreelance artist in Athens GAckraus11@gmail.com
Sarah HoutsmaGreenhouse manager at Capiola Hydroponics in Atlantasarah.houtsma@uga.edu
Shamir HarryBioinformatics research technician at the Jackon Laboratory in Maineshamir.harry25@uga.edu
Alexis RamosResearch Technician at Auburn Universityazr0096@auburn.edu
Yi Hsuan ChuPost doctoral researcher at Michigan State Uchu.285@osu.edu
Eudald Illa BerenguerPost doctoral scholar at UGAeillaberenguer@uga.edu
Nathan Detwilerundergraduate student HCS at OSUdetwiler.83@osu.edu
Xiaoxi LiuPhD student Department of Vegetable Science, China Agricultural Universityliuxxabc@163.com
Yanping WangPost doctoral researcher at China Agricultural Universitywangyp_cau@foxmail.com
Liang SunAssociate professor Department of Vegetable Science, China Agricultural University317886104@qq.com
Jiheun ChoGreenhouse and research assistant in HCS at OSUjiheun72@hotmail.com
Shan WuPost doctoral researcher Cornell Universitysw728@cornell.edu
Qi MuPhD student, Iowa State Universityqmu@iastate.edu
Brenda Sanchez MontejoResearch Aide, Bay areabrendaj.montejo4@gmail.com
Manohar ChakrabartiPost doctoral researcher U Kentuckymanohar.chakrabarti@gmail.com
Hyun Jung KimResearcher at Seoul Universityhkim.2295@gmail.com
Lev Jardon BarbollaAssistant professor UNAM, Mexicolevjardon@yahoo.com.mx
Jessica Perez AlquiciraResearcher in the Ecological and Evolutionary
Genomics Lab at Langebio, Mexico
perezalquicira@gmail.com
Shin Reui LeeNational Taiwan Universitysdemoniac0325@gmail.com
Jammi McCleadMansfield Area Hospitalsjammimc3@gmail.com
Na ZhangBreeder with Pioneer in Chinana.zhang@pioneer.com
Antonio CabreraPost doctoral researcher at OSU’s wheat breeding programcabrera.16@osu.edu
Nic WeltyFarmer and Restaurant Ownernicwelty@gmail.com
Gustavo RodríguezAssistant Investigator CONICET, Argentinagrodrig@unr.edu.ar
Josh ClevengerPhD Student, U Georgiajclev@uga.edu
Ning LiuPost Doctoral Researcher at U Nebraskanliu@unl.edu
Jaymie StreckerSoftware Developer, Kosada Inc 
Han XiaoProfessor Shanghai Institute of Biological Sciences, Chinahanxiao@sibs.ac.cn
Zejun HuangAssociate Professor CAAS, Chinahuangzj74@gmail.com
Marin Talbot BrewerAssistant Professor U Georgiamtbrewer@uga.edu
Maria Jose Gonzalo  
Steven FensterAssistant Professor, Fort Lewis College, Durango, COsdfenster@fortlewis.edu
Rhiannon SchneiderMasters Student OSUschneider.541@osu.edu
Jenny MoyseenkoResearch Associate at OSUmoyseenko.2@osu.edu
Meghan FisherAgricultural Supervisor, U Marylandfishe154@gmail.com
Jason Van HoutenPremed student, Wayne State MIjvanhouten11@gmail.com
Elaine StingelUndergrad student at OSUstingel.7@buckeyemail.osu.edu
Scott WolfeResearch Associate, OSUwolfe.529@osu.edu
Claire AndersonMasters Student in Genetic Counseling, Johns Hopkins 
Reynaldo Nuñez SalazarMaster’s student in La Molina, Peru 
Geoffrey GonzalezPhD student OSUgonzalez-escobed.1@osu.edu