Protein Sorting Mechanisms Laboratory

🇵🇹 PT
Novo artigo publicado na npj Science of Plants! 🌱🍅

É com grande entusiasmo que anunciamos a publicação do nosso artigo:
“Tomato aspartic proteinases harbouring PSI domains reveal stress responsiveness, organ specificity, and conserved features.”

Neste estudo, investigámos proteinases aspárticas contendo domínios PSI em Solanum lycopersicum (tomateiro), analisando as suas características moleculares, expressão específica por órgão e resposta a stress abiótico.

🔬 Identificámos 58 APs no tomateiro, das quais cinco possuem domínio PSI.
🌿 Observámos elevada expressão em cotilédones e raízes, com padrões específicos em tecidos reprodutivos.
🌊 Sob stress osmótico e salino, verificaram-se respostas diferenciadas, com aumento de marcadores de stress oxidativo e ativação de mecanismos antioxidantes.

Os nossos resultados destacam o papel regulatório destas enzimas na adaptação das plantas a condições ambientais adversas.

Parabéns a toda a equipa pelo excelente trabalho! 👏
🔗 https://doi.org/10.1038/s44383-026-00023-x

PlantBiology Research

🇬🇧 EN
New article published in npj Science of Plants! 🌱🍅

We are excited to share our latest publication:
“Tomato aspartic proteinases harbouring PSI domains reveal stress responsiveness, organ specificity, and conserved features.”

In this study, we investigated PSI-containing aspartic proteinases in Solanum lycopersicum (tomato), focusing on their molecular characteristics, tissue-specific expression, and responses to abiotic stress.

🔬 We identified 58 APs in tomato, five of which contain a PSI domain.
🌿 Most PSI-containing APs are highly expressed in cotyledons and roots, with organ-specific patterns in reproductive tissues.
🌊 Under osmotic and saline stress, distinct expression patterns were observed, accompanied by increased oxidative stress markers and antioxidant responses.

Overall, our findings highlight the tightly regulated role of PSI-containing APs in plant adaptation to environmental stress.

Congratulations to the entire team on this achievement! 👏

🔗 https://doi.org/10.1038/s44383-026-00023-x

🇵🇹 O nosso aluno de doutoramento, Miguel Sampaio, marcou presença no congresso Iberian Plant Biology 25, que decorreu em Múrcia, com a apresentação de um póster científico sobre o seu projeto de douramento! 🧪🌱
Parabéns pelo excelente trabalho e por representares o nosso laboratório com tanto empenho e dedicação! 🎓✨

🇬🇧 Our PhD student, Miguel Sampaio, presented a scientific poster at the Iberian Plant Biology 25 conference held in Murcia! 🧪🌱
Congratulations on your excellent work and for representing our laboratory with so much commitment and dedication! 🎓✨

🇵🇹 O nosso aluno de doutoramento, João Neves, participou na escola de verão “Advanced Plant Imaging – API: From Super-Resolution to Fluorescence Lifetime Imaging Microscopy”, dedicada às mais avançadas técnicas de imagem em plantas!
Organizado pela Saclay Plant Sciences (SPS), o curso teve lugar em Versalhes e juntou jovens investigadores de toda a Europa para uma semana intensa de formação prática e teórica em microscopia de super-resolução e FLIM.
Uma excelente oportunidade para aprofundar conhecimentos, trocar experiências e explorar novas abordagens no estudo da biologia celular de plantas 🌿💡🔬

🇬🇧 Our PhD student, João Neves, took part in the “Advanced Plant Imaging – API: From Super-Resolution to Fluorescence Lifetime Imaging Microscopy” summer school, focused on state-of-the-art imaging techniques in plant biology!
Organized by Saclay Plant Sciences (SPS), the course was held in Versailles and brought together early-career researchers from across Europe for a full week of hands-on training and in-depth lectures on super-resolution microscopy and FLIM.
An enriching experience to deepen knowledge, share ideas, and explore innovative approaches in plant cell biology. 🌿💡🔬

🌾✨ It’s almost time!
This Wednesday, June 12, we gather for the CropOMICS Symposium – The Future of Agriculture 🌍🧬

A full day of science, innovation, and discussion on how multi-omics and genome editing can shape a more sustainable future for crops.

📍CIBIO, Vila do Conde
📎 Final programme in bio

Today our Sofia presented her master’s thesis, where she talked about the interactions involving the plant-specific insert from cardosins and the trafficking mediated by this domain. Sofia gave an excelent presentation. We are very proud of Sofia’s work.