Molecular Regulation of Plant Abiotic and Biotic Stress Tolerance in Protein Crop Faba Bean
Introduction
In the face of climate change, agricultural productivity and food security are critical global challenges exacerbated by population growth and geopolitical instability. To address these issues, understanding plant response mechanisms to various stresses at the molecular level is crucial for developing robust cultivars that can thrive in a changing climate. Persistent crop losses due to plant diseases and sub-optimal growth conditions are significant barriers to global food sufficiency, and climate change further heightens plant vulnerability. Therefore, designing the next generation of crop plants capable of withstanding harsh climate conditions while resisting pathogen attacks is imperative.
Research Context and Objectives
Our research project aims to unravel novel mechanisms in plant stress signaling and translate this knowledge into crop improvement. Although molecular mechanisms in stress signaling have been extensively studied, many signaling pathways remain incomplete, necessitating further exploration. Our team has identified uncharacterized regulators essential for activating plant defense reactions through a mutant screen in Arabidopsis. These gene identities have been confirmed via whole-genome sequencing, setting the stage for groundbreaking discoveries.
The project leverages translational biology to apply molecular breeding techniques to develop climate-resilient crops. We focus on Vicia faba (faba bean), an ancient crop with high protein yield potential, suitable for Nordic climates, yet vulnerable to various stresses. Additionally, we study barley, a globally significant grain, serving as a model for genomic and molecular studies. We address the physiological and molecular function of the newly identified (highly conserved) regulators from Arabidopsis also in crops by exploiting gene editing through CRISPR/Cas9 technology.
Research Opportunities for the PhD Candidate
As a PhD candidate, you will have the opportunity to work with cutting-edge methods in plant biology, including phenomics, gene editing, molecular interaction studies, microscopy, and transcriptomics. By implementing a multidisciplinary approach, you will address the molecular and physiological regulation of novel proteins to enhance plant fitness, targeting regulatory amino acids or interaction partners.
You will contribute to targeting stress resistance pathways in faba bean and/or barley, providing strategies for future crop improvement. This translational biology approach offers potential targets for genetic manipulation, leading to agronomic benefits.
Why Join Us?
The project is built on solid pre-existing data, with novel regulators already identified and gene identities confirmed, providing a head-start for your research. You will be integrated into ongoing consortia, including FabaNova (international) and MARTA (national) for faba bean research, and RecoBar (international) for barley research.
By advancing plant stress tolerance research, this project aims to contribute to overcoming current limitations in understanding molecular regulatory networks necessary for activating plant defense reactions. Your work will contribute to enhancing sustainable and self-sufficient food production in Estonia and globally, aligning with the 2030 Agenda for Sustainable Development Goals, including “Zero Hunger” and “Responsible Consumption and Production.”
Join us in this highly novel and impactful project, where your research will have the potential to shape the future of crop breeding and sustainability.

Triin Vahisalu (ORCID ID: 0000-0001-6050-0320) is a senior researcher at Tallinn Technical University (TalTech). She obtained her PhD in 2012 in Plant Molecular Biology from the University of Helsinki. Since 2022, she has been leading her own research line at the University of Helsinki, Finland. In 2024, she returned to Estonia with the Returning Researcher Grant from the Estonian Research Council, focusing on molecular mechanisms of plant stress tolerance and translational biology at TalTech. Her research aims to contribute to precision breeding emphasizing stress tolerance, which is particularly relevant in the context of climate change. Her research utilizes model plant Arabidopsis, as well as crop species including barley and Faba bean. Her work has been published in several high-ranking scientific journals, including Plant Cell, Nature, Science Advances, Plant Physiology, New Phytologist, and Plant Journal. She has supervised three Master students and is currently the main supervisor for one PhD and one Master student.
Triin Vahisalu has participated in over five national and international research consortia, collaborating with partners in academia and breeding institutions, currently on-going: FabaNova, RecoBar, and MARTA.
Current research focus: Plant stress tolerance, molecular mechanisms in stress tolerance, translational biology, stress signaling
No. of Publications: 11
Key Funding:
– The function of SHEER (Stress induced HEmE Receptor) and free heme in plant immune signaling. Estonian Research Council (144 000 EUR)
- Modern breeding tools for smart food security (MARTA) 2024-2027.
Total funding per consortia: 1 980 000 EUR; Sub-Project, Tallinn Technical University 315 000 EUR. I am WP 2.2 leader: CRISPR-Cas applied in designing drought resistance in faba bean.
– Climate-ready faba bean for Nordic and Baltic protein security consortia (FabaNova); NordForsk, 2023-2026; WP leader on gene editing in faba bean. Total funding 9 808 389 NOK; 1310400 NOK allocated for me.
Awards, memberships:
Scandinavian Plant Physiology Society – member
2011 – University of Helsinki best doctoral thesis award
2010 – Estonian State Science Award
Alan Schulman (ORCID ID: 0000-0002-4126-6177), Research Director, Institute of Biotechnology, University of Helsinki (PhD,1986, Cell and Developmental Biology Yale University) worked to isolate the first transposable element from barley (Genetics Department, University of Helsinki) before founding his own group (1988). He also serves as an Expert on the GMO Committee of the European Food Safety Authority (EFSA) and co-chair of the EPSO AgTech Working Group. His group has applied genomics, genetics, and complementary physiological and cellular phenotyping methods to identify and characterize genes for abiotic stress tolerance and resilience and disease resistance, as well as for end-use quality. Barley and faba bean are major focuses, but he has worked also in oat, rye, and other systems. Recently, Schulman and collaborators published a high-quality reference genome for faba bean, the largest (13 Gbp monoploid) crop genome to date. He co-leads the international faba pan-genome consortium and has produced chromosome-level assemblies of six more genomes, including the reference genomes for barley and Brachypodium. He has trained eight PhD, 10 MSc, and 39 postdocs from 24 countries.
Cecilia Sarmiento (ORCID ID: 0000-0002-8011-1370) is a senior researcher at TalTech. She obtained her PhD at TalTech in 2008 in plant molecular biology. She has supervised over 10 MSc and PhD students. Currently she is also responsible for the PhD programme in the School of Science at TalTech.