Ivan Lopez-Valdivia
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Ph.D. Candidate at Roots Lab
310 Tyson Building
Pennsylvania State University
Email: iul116@psu.edu
Publications
2023
Jagdeep Singh Sidhu, Ivan Lopez-Valdivia, Christopher F Strock, Hannah M Schneider, Jonathan Lynch. 2023. Cortical parenchyma wall width (CPW) regulates root metabolic cost and maize performance under suboptimal water availability. biorxiv Full Record
Ivan Lopez-Valdivia; Xiyu Yang; Jonathan P. Lynch. 2023. Large root cortical cells and reduced cortical cell files improve growth under suboptimal nitrogen in silico. Plant Physiology, Full Record
Miguel Vallebueno-Estrada; Guillermo G. Hernández-Robles; Eduardo González-Orozco; Ivan Lopez-Valdivia; Teresa Rosales Tham; Víctor Vásquez Sánchez; Kelly Swarts; Tom D. Dillehay; Jean-Philippe Vielle-Calzada; Rafael Montiel. 2023. Domestication and lowland adaptation of coastal preceramic maize from Paredones, Peru. eLife, Full Record
2022
- Lopez-Valdivia Ivan, Alden Perkins, Hannah Schneider, Miguel Vallebueno-Estrada, James Burridge, Eduardo González-Orozco, Aurora Montufar, Rafael Montiel, Jonathan Lynch, Jean-Philippe Vielle-Calzada. 2022. Gradual domestication of root traits in the earliest maize from Tehuacan. PNAS Vol. 119 No. 17 e2110245119 Full Record
2019
- Lopez-Valdivia Ivan (2019) Caracterización de raíces milenarias de maíz provenientes de Tehuacán: comparación con poblaciones actuales del género Zea. CINVESTAV. Mexico. Tesis de Maestria. Full Record
About
I’m a Mexican Ph.D. student devoted to understanding the physiological and morphological root adaptations along the domestication and dispersion of maize and wheat. I use greenhouse, field, and modeling approaches to study the role of root anatomy, architecture, and physiology in the adaptation to abiotic stress.
I’m doing my doctoral thesis under the mentorship of Jonathan Lynch at Pennsylvania State University where we implement high-throughput phenotyping of root systems to capture the variation of root phenes (most elemental components of the phenotype), their interactions, and functions under abiotic stress.
Last year I shared advances of my project related with the local adaptation of root traits to arid and humid soils at the ASA, CSSA & SSSA Annual Meeting in Baltimore.
Before coming to Penn State University I studied a master degree in Plant Biotechnology at LANGEBIO Cinvestav where I characterized the root anatomy and architecture of 5000-year-old maize specimens coming from the San Marcos cave at Tehuacan Valley. I performed this research at Paleogenomics Lab and Apomixis Lab at LANGEBIO, and in collaboration with the Roots Lab at Penn State University. We found evidences that the root traits were domesticated gradually in maize. Further information can be found here. I was so fortunate to share my master thesis work at “Sexto Congreso Internacional El patrimonio Cultural y las nuevas tecnologias” where I talked in detail about how root traits were affected gradually during the domestication of maize.
