Research area
Plant biology
Research area
Plant biology

MOLECULAR PLANT PHYSIOLOGY

Research

Our lab explores how plants sense and adapt to their surrounding environment, with a particular emphasis on the molecular mechanisms driving phenotypic plasticity. We investigate plant responses to environmental cues such as shading from neighbors, temperature fluctuations, and variations in water and nutrient availability. In high-density agricultural settings, these factors can significantly impact plant productivity, making adaptive responses crucial. We focus on elucidating the receptors, downstream signaling pathways, and the dynamics and function of biomolecular condensates within these pathways.

We have made significant strides in characterizing the spatial and temporal dynamics of these signaling pathways. Notably, we identified phytochrome B as the first known temperature sensor in plants. Our research has also shed light on how plants interpret neighbor signals to modulate growth, photosynthesis, water usage, and even kin recognition. These findings contribute to a deeper understanding of how plants optimize their form and function in complex field environments.

Skills & tools

Our research employs a multidisciplinary approach, integrating molecular genetics, advanced imaging techniques, and controlled environmental manipulation. We analyze the subcellular dynamics of key regulatory proteins under both stable and fluctuating environmental conditions. Leveraging Arabidopsis as a model system, we achieve detailed dissection of intricate signaling pathways. We utilize transcriptomics, protein localization studies, and comprehensive phenotypic assays to connect molecular events with observable physiological outcomes. This integrated strategy allows us to address fundamental questions regarding plant adaptive behavior, with implications for both ecological and agricultural applications.

Collaboration interests

  • Open to collaborations to study plant growth responses to the environment in Arabidopsis and crop species.

Selected publications

  • IGLESIAS, María José, et al. Shade-induced ROS/NO reinforce COP1-mediated diffuse cell growth. Proceedings of the National Academy of Sciences, 2024, vol. 121, no 42, p. e2320187121.

  • LEGRIS, Martina, et al. Phytochrome B integrates light and temperature signals in Arabidopsis. Science, 2016, vol. 354, no 6314, p. 897-900.

  • PEREYRA, Matías Ezequiel, et al. PIF4 enhances the expression of SAUR genes to promote growth in response to nitrate. Proceedings of the National Academy of Sciences, 2023, vol. 120, no 39, p. e2304513120.

Principal investigator

Jorge Casal, PhD