Mark Guiltinan

J. Franklin Styer Professor of Horticultural Botany; Professor of Plant Molecular Biology; Director, Endowed Program in the Molecular Biology of Cocoa

Mark Guiltinan

Research Summary

Plant functional genomics, metabolomics and biotechnology. Identification of key genes for disease resistance and important traits in the tree crop Theoboma cacao, the Chocolate tree.

Huck Graduate Students

Huck Affiliations

Links

Publication Tags

Genes Cacao Theobroma Cacao Genome Phytophthora Gene Expression Arabidopsis Tissues Transcription Factors Genotype Chocolate Leaves Flavonoids Glucocorticoid Receptors Polymers Somatic Embryogenesis Seeds Somatic Embryos Proteins Flowering Pathogens Rna Genomics Dexamethasone Pathogenesis

Most Recent Publications

Adriana M. Gallego, Luisa F. Rojas, Wilmar G. Valencia, Lucía Atehortúa, Aura I. Urrea, Andrew S. Fister, Mark J. Guiltinan, Siela Maximova, Natalia Pabón-Mora, 2021, BMC Genomics

Tuomas Hämälä, Eric K. Wafula, Mark J. Guiltinan, Paula E. Ralph, Claude W. dePamphilis, Peter Tiffin, 2021, Proceedings of the National Academy of Sciences of the United States of America

Widely distributed variation in tolerance to Phytophthora palmivora in four genetic groups of cacao

Andrew Fister, Mariela Leandro-Muñoz, Dapeng Zhang, James H. Marden, Peter Tiffin, Claude dePamphilis, Siela Maximova, Mark J. Guiltinan, 2020, Tree Genetics and Genomes

Tuomas Hämälä, Mark J. Guiltinan, James H. Marden, Siela N. Maximova, Claude dePamphilis, Peter Tiffin, 2020, Molecular Biology and Evolution on p. 110-123

Metabolomic profile of cacao cell suspensions growing in blue light/dark conditions with potential in food biotechnology

Adriana M. Gallego, Luisa F. Rojas, Héctor A. Rodriguez, Conrado Mora, Lucía Atehortúa, Aura I. Urrea, Mark J. Guiltinan, Siela N. Maximova, Emmanuel Gaquerel, Martha Zuluaga, Natalia Pabón-Mora, 2019, Plant Cell, Tissue and Organ Culture on p. 275-294

Resistant and susceptible cacao genotypes exhibit defense gene polymorphism and unique early responses to Phytophthora megakarya inoculation

Désiré N. Pokou, Andrew S. Fister, Noah Winters, Mathias Tahi, Coulibaly Klotioloma, Aswathy Sebastian, James H. Marden, Siela N. Maximova, Mark J. Guiltinan, 2019, Plant Molecular Biology on p. 499-516

Adriana M. Gallego, Luisa F. Rojas, Oriana Parra, Héctor A. Rodriguez, Juan C. Mazo Rivas, Aura Inés Urrea, Lucía Atehortúa, Andrew S. Fister, Mark J. Guiltinan, Siela N. Maximova, Natalia Pabón-Mora, 2018, Scientific Reports

Andrew S. Fister, Lena Landherr, Melanie Perryman, Yufan Zhang, Mark J. Guiltinan, Siela N. Maximova, 2018, PLoS One

Andrew S. Fister, Lena Landherr, Siela N. Maximova, Mark J. Guiltinan, 2018, Frontiers in Plant Science

Most-Cited Papers

Andrew S. Fister, Lena Landherr, Siela N. Maximova, Mark J. Guiltinan, 2018, Frontiers in Plant Science

Sergio L. Florez, Rachel L. Erwin, Siela N. Maximova, Mark J. Guiltinan, Wayne R. Curtis, 2015, BMC Plant Biology

Luis C. Mejía, Edward A. Herre, Jed P. Sparks, Klaus Winter, Milton N. García, Sunshine A. Van Bael, Joseph Stitt, Zi Shi, Yufan Zhang, Mark J. Guiltinan, Siela N. Maximova, 2014, Frontiers in Microbiology

Lyndel W. Meinhardt, Gustavo Gilson L. Costa, Daniela P.T. Thomazella, Paulo José P.L. Teixeira, Marcelo F. Carazzolle, Stephan C. Schuster, John E. Carlson, Mark J. Guiltinan, Piotr Mieczkowski, Andrew Farmer, Thiruvarangan Ramaraj, Jayne Crozier, Robert E. Davis, Jonathan Shao, Rachel L. Melnick, Gonçalo A.G. Pereira, Bryan A. Bailey, 2014, BMC Genomics

Shahin S. Ali, Jonathan Shao, David J. Lary, Brent A. Kronmiller, Danyu Shen, Mary D. Strem, Ishmael Amoako-Attah, Andrew Yaw Akrofi, B. A.Didier Begoude, G. Martijn ten Hoopen, Klotioloma Coulibaly, Boubacar Ismaël Kebe, Rachel L. Melnick, Mark J. Guiltinan, Brett M. Tyler, Lyndel W. Meinhardt, Bryan A. Bailey, 2017, Genome Biology and Evolution

Biodegradable polyphosphazenes containing antibiotics

Zhicheng Tian, Yufan Zhang, Xiao Liu, Chen Chen, Mark J. Guiltinan, Harry R. Allcock, 2013, Polymer Chemistry on p. 1826-1835

Yufan Zhang, Siela N. Maximova, Mark J. Guiltinan, 2015, Frontiers in Plant Science on p. 1-12

Yufan Zhang, Adam Clemens, Siela N. Maximova, Mark J. Guiltinan, 2014, BMC Plant Biology on p. 106

Zi Shi, Siela Maximova, Yi Liu, Joseph Verica, Mark J. Guiltinan, 2013, Molecular Plant on p. 802-816

News Articles Featuring Mark Guiltinan

Study of structural variants in cacao genomes yields clues about plant diversity

An exhaustive and painstaking comparison of the genomes of multiple strains of the cacao tree by a team of researchers has provided insights into the role genomic structural variants play in the regulation of gene expression and chromosome evolution, giving rise to the differences within populations of the plant.

Discovery of chemical clue may lead to solving cacao's black pod rot mystery

The finding of relatively high levels of the antimicrobial compound clovamide in the leaves of a disease-resistant strain of cacao has significant implications for breeding trees that can tolerate black pod rot, according to Penn State researchers who conducted a novel study.

New way to identify disease-resistant genes in chocolate-producing trees

Chocolate-producing cacao trees that are resistant to a major pathogen were identified by an international team of plant geneticists. The NSF-funded finding points the way for plant breeders to develop trees that are tolerant of the disease.

Novel way to ID disease-resistance genes in chocolate-producing trees found

Chocolate-producing cacao trees that are resistant to a major pathogen were identified by an international team of plant geneticists. The findings point the way for plant breeders to develop trees that are tolerant of the disease.

These Kids Have Come 500 Miles To Do Science And Make A Difference

The road between Arauquita, relatively near Colombia’s border with Venezuela, and the nation’s capital in Bogota stretches over 800 kilometers (500 miles), but for one week in October, a special group bridged that gap in more ways than one.

Gene editing could save Ghana’s cocoa from extinction, scientists say

A new study warns that climate change could drive Ghana’s cocoa (cacao) industry to extinction — a fate that scientists say could be reversed through gene editing.

Guiltinan, Maximova receive the 2019 Kopp International Achievement Award

Mark Guiltinan, professor of plant molecular biology, and Siela Maximova, research professor of plant biotechnology, both in the College of Agricultural Sciences, are the recipients of Penn State's 2019 W. LaMarr Kopp International Achievement Award.

Pink LEDs And Cacao Plants: Touring A Plant Science Greenhouse

These luminescent laboratories aren’t something out of a science fiction novel — they’re glowing examples of plant science research being conducted in the heart of campus.