Patricia Bernal
@pbernalt6ss.bsky.social
Group Leader & Associate Professor of Microbiology at Universidad de Sevilla. I am interested in Microbiology, Pseudomonas putida, T6SS, biocontrol and scicomm
Website: personal.us.es/pbguzman
📍University of Seville
Website: personal.us.es/pbguzman
📍University of Seville
In conclusion, we have shown that the T6SSs are essential for competitive rhizosphere colonisation. The wildtype P. putida strain significantly alters the bacterial community structure compared to T6SS mutants. (10/11)
October 6, 2025 at 6:22 PM
In conclusion, we have shown that the T6SSs are essential for competitive rhizosphere colonisation. The wildtype P. putida strain significantly alters the bacterial community structure compared to T6SS mutants. (10/11)
The K1-T6SS specifically affects taxa such as Rhizobiaceae while the K2/K3-T6SSs exclusively affect other groups like Azospirillaceae.
The systems impact a wide phylogenetic range, modulating the abundance of both Gram-positive and Gram-negative bacteria in the rhizosphere. (9/11)
The systems impact a wide phylogenetic range, modulating the abundance of both Gram-positive and Gram-negative bacteria in the rhizosphere. (9/11)
October 6, 2025 at 6:22 PM
The K1-T6SS specifically affects taxa such as Rhizobiaceae while the K2/K3-T6SSs exclusively affect other groups like Azospirillaceae.
The systems impact a wide phylogenetic range, modulating the abundance of both Gram-positive and Gram-negative bacteria in the rhizosphere. (9/11)
The systems impact a wide phylogenetic range, modulating the abundance of both Gram-positive and Gram-negative bacteria in the rhizosphere. (9/11)
The presence of wildtype P. putida strain significantly alters the community structure (beta-diversity) of the resident microbial community when compared to T6SS mutants. Our analysis reveals that the different T6SS clusters show specificity, demonstrating a flexible competitive strategy. (8/11)
October 6, 2025 at 6:22 PM
The presence of wildtype P. putida strain significantly alters the community structure (beta-diversity) of the resident microbial community when compared to T6SS mutants. Our analysis reveals that the different T6SS clusters show specificity, demonstrating a flexible competitive strategy. (8/11)
We found that these secretion systems are key for effective rhizosphere colonisation. When tomato plants were inoculated with T6SS-deficient mutant strains, there was a significant reduction in bacterial recovery from the rhizosphere compared to the wildtype strain. (6/11)
October 6, 2025 at 6:22 PM
We found that these secretion systems are key for effective rhizosphere colonisation. When tomato plants were inoculated with T6SS-deficient mutant strains, there was a significant reduction in bacterial recovery from the rhizosphere compared to the wildtype strain. (6/11)
We demonstrate for the first time the functionality of the K2 and/or K3-T6SS clusters. Silent against standard lab strains, they became functional in vitro against plant pathogens and in vivo within the rhizosphere microbiota, suggesting an adaptive response to competitive pressure.(5/11)
October 6, 2025 at 6:22 PM
We demonstrate for the first time the functionality of the K2 and/or K3-T6SS clusters. Silent against standard lab strains, they became functional in vitro against plant pathogens and in vivo within the rhizosphere microbiota, suggesting an adaptive response to competitive pressure.(5/11)
P. putida KT2440 is equipped with three T6SS clusters: K1, K2, and K3. Previously, only the K1-T6SS was known to be active under laboratory conditions, where it kills severe plant pathogens such as P. syringae and X. campestris. (4/11)
October 6, 2025 at 6:22 PM
P. putida KT2440 is equipped with three T6SS clusters: K1, K2, and K3. Previously, only the K1-T6SS was known to be active under laboratory conditions, where it kills severe plant pathogens such as P. syringae and X. campestris. (4/11)
Our paper, describing how the T6SSs of P. putida shape the tomato rhizosphere, is now in its final format in @isme-microbes.bsky.social ISME Communications. If you'd like to learn more, here is a thread (1/11) or read the Article doi.org/10.1093/isme....
October 6, 2025 at 6:22 PM
Our paper, describing how the T6SSs of P. putida shape the tomato rhizosphere, is now in its final format in @isme-microbes.bsky.social ISME Communications. If you'd like to learn more, here is a thread (1/11) or read the Article doi.org/10.1093/isme....
New prepint ‼️
We studied how the 3 T6SSs of P. putida shape the rhizobiota of tomato plants. Spoiler alert: K2- and K3-T6SS do not kill E. coli, but they are functional in the rhizosphere. In collaboration with the lab of Prof. Marta Martin & Rafael Rivilla @uam.es
www.biorxiv.org/content/10.1...
We studied how the 3 T6SSs of P. putida shape the rhizobiota of tomato plants. Spoiler alert: K2- and K3-T6SS do not kill E. coli, but they are functional in the rhizosphere. In collaboration with the lab of Prof. Marta Martin & Rafael Rivilla @uam.es
www.biorxiv.org/content/10.1...
August 15, 2025 at 1:07 PM
New prepint ‼️
We studied how the 3 T6SSs of P. putida shape the rhizobiota of tomato plants. Spoiler alert: K2- and K3-T6SS do not kill E. coli, but they are functional in the rhizosphere. In collaboration with the lab of Prof. Marta Martin & Rafael Rivilla @uam.es
www.biorxiv.org/content/10.1...
We studied how the 3 T6SSs of P. putida shape the rhizobiota of tomato plants. Spoiler alert: K2- and K3-T6SS do not kill E. coli, but they are functional in the rhizosphere. In collaboration with the lab of Prof. Marta Martin & Rafael Rivilla @uam.es
www.biorxiv.org/content/10.1...
Great to see @joaquinbernal.bsky.social and @lopezigual.bsky.social. Welcome to Cielito lindo. It is nice and cosy here ☺️ Follow them for secretion systems/Salmonella and synthetic biology/cyanobacteria. Still need to convince Alejandro Arce from this picture 😂
January 27, 2025 at 9:25 PM
Great to see @joaquinbernal.bsky.social and @lopezigual.bsky.social. Welcome to Cielito lindo. It is nice and cosy here ☺️ Follow them for secretion systems/Salmonella and synthetic biology/cyanobacteria. Still need to convince Alejandro Arce from this picture 😂
Planning your conference for 2025? Are you into toxins and secretion systems? Registration for ETOX 2025 opens tomorrow 6th until January 31st: www.etox-meetings.org. It will be amazing, check out our invited speakers 🤩. Go and prepare your abstract, we are looking forward to meeting you in Spain!!
January 5, 2025 at 10:58 AM
Planning your conference for 2025? Are you into toxins and secretion systems? Registration for ETOX 2025 opens tomorrow 6th until January 31st: www.etox-meetings.org. It will be amazing, check out our invited speakers 🤩. Go and prepare your abstract, we are looking forward to meeting you in Spain!!
Saying goodbye today to Citlaly Cando, a fantastic student from Mexico who spent six months with us. We enjoyed "churros con chocolate" to gift her a delicious memory of Spain. We'll miss you dearly!
December 17, 2024 at 4:04 PM
Saying goodbye today to Citlaly Cando, a fantastic student from Mexico who spent six months with us. We enjoyed "churros con chocolate" to gift her a delicious memory of Spain. We'll miss you dearly!
Sharing in #BlueSky a 2023 review on #T6SS that I loved co-authoring with my fantastic friend and collaborator @lukeallsopp.bsky.social He coined the catchy, musical first part of our title: "Killing in the Name of: T6SS Structure and Effector Diversity" Check it out: buff.ly/3Zzh0Rz #Microbiology
December 14, 2024 at 8:52 PM
Sharing in #BlueSky a 2023 review on #T6SS that I loved co-authoring with my fantastic friend and collaborator @lukeallsopp.bsky.social He coined the catchy, musical first part of our title: "Killing in the Name of: T6SS Structure and Effector Diversity" Check it out: buff.ly/3Zzh0Rz #Microbiology
Por fin en mis manos, deseando leerlo tranquilamente estas navidades 📚. Las chicas del muro de @yosoycorra.bsky.social
December 2, 2024 at 6:37 PM
Por fin en mis manos, deseando leerlo tranquilamente estas navidades 📚. Las chicas del muro de @yosoycorra.bsky.social
Today, I attended an exciting symposium "Revolution in the Classroom: AI as a Learning Opportunity" at @unisevilla.bsky.social exploring the transformative power of Artificial Intelligence in education and our lives. A revolution we better embrace and enjoy their endless possibilities 🎓. #AI
November 29, 2024 at 2:06 PM
Today, I attended an exciting symposium "Revolution in the Classroom: AI as a Learning Opportunity" at @unisevilla.bsky.social exploring the transformative power of Artificial Intelligence in education and our lives. A revolution we better embrace and enjoy their endless possibilities 🎓. #AI
Para los que estéis hoy por Sevilla, No os perdáis en La Tregua a Carmen Álvaro Castro hablando de Danas, huracanes y otros eventos extremos. El tema no puede ser de mayor actualidad. Como dice @danielgomcab.bsky.social pregunta a una profesional y evita los bulos.
November 28, 2024 at 4:38 PM
Para los que estéis hoy por Sevilla, No os perdáis en La Tregua a Carmen Álvaro Castro hablando de Danas, huracanes y otros eventos extremos. El tema no puede ser de mayor actualidad. Como dice @danielgomcab.bsky.social pregunta a una profesional y evita los bulos.
Great to see @ageinves.bsky.social here!! Let’s help them reconnect with the Spanish community of scientists 👩🏻🔬 🧑🔬👨🏽🔬🧫🔭🔬⚗️🧬🥼🧪🦠🩻⚕️🏥🩺
November 26, 2024 at 1:55 PM
Great to see @ageinves.bsky.social here!! Let’s help them reconnect with the Spanish community of scientists 👩🏻🔬 🧑🔬👨🏽🔬🧫🔭🔬⚗️🧬🥼🧪🦠🩻⚕️🏥🩺
Trying Buffer for the first time to schedule a post on Bluesky. New times ahead 🙂, bye-bye Elon Musk, I will definitely not miss X.
November 14, 2024 at 6:41 PM
Trying Buffer for the first time to schedule a post on Bluesky. New times ahead 🙂, bye-bye Elon Musk, I will definitely not miss X.
New #MicroSky followers 📣 We are pleased to announce that ETOX 2025, the 22nd European Workshop on Bacterial Protein Toxins, will be held in Spain 🇪🇸, June 29 - July 3, 2025. Registration opens on January 6. Apply here etox-meetings.org and join us for a great meeting!!!Please repost 🦋 Thanks 😊
November 12, 2024 at 9:31 PM
New #MicroSky followers 📣 We are pleased to announce that ETOX 2025, the 22nd European Workshop on Bacterial Protein Toxins, will be held in Spain 🇪🇸, June 29 - July 3, 2025. Registration opens on January 6. Apply here etox-meetings.org and join us for a great meeting!!!Please repost 🦋 Thanks 😊
We are pleased to announce that ETOX 2025, the 22nd European Workshop on Bacterial Protein Toxins, will be held in Spain, June 29 - July 3, 2025. Registration opens on January 6. Apply here etox-meetings.org and join us for a great meeting! Please repost
November 10, 2024 at 8:12 AM
We are pleased to announce that ETOX 2025, the 22nd European Workshop on Bacterial Protein Toxins, will be held in Spain, June 29 - July 3, 2025. Registration opens on January 6. Apply here etox-meetings.org and join us for a great meeting! Please repost
Tomorrow at IBVF (CSIC + Universidad de Sevilla), we have the pleasure to have Jean Marc Ghigo @jmghigolab.bsky.social . Don’t miss it if you have the chance !!!
February 8, 2024 at 7:47 PM
Tomorrow at IBVF (CSIC + Universidad de Sevilla), we have the pleasure to have Jean Marc Ghigo @jmghigolab.bsky.social . Don’t miss it if you have the chance !!!
Absolutely honoured to host Microbiology legend Ken Timmis at University of Seville this week! His talk on International Microbiology Literacy Initiative was truly inspiring. Grateful for invaluable stories, advice & experiences shared. It was very special to have him here.
January 27, 2024 at 6:01 PM
Absolutely honoured to host Microbiology legend Ken Timmis at University of Seville this week! His talk on International Microbiology Literacy Initiative was truly inspiring. Grateful for invaluable stories, advice & experiences shared. It was very special to have him here.
Look at this Environmental Microbiology Workshop 2024 led by Juan Luis Ramos, Puri López-García & @vdlorenzo.bsky.social held in beautiful Baeza, Spain. Applications are open till Jan 15th. Speakers include @pabnik.bsky.social, A. Prieto, D. Salvachua, J. Gilbert, T. T. Narancic, K. Timmis & more
December 11, 2023 at 1:55 PM
Look at this Environmental Microbiology Workshop 2024 led by Juan Luis Ramos, Puri López-García & @vdlorenzo.bsky.social held in beautiful Baeza, Spain. Applications are open till Jan 15th. Speakers include @pabnik.bsky.social, A. Prieto, D. Salvachua, J. Gilbert, T. T. Narancic, K. Timmis & more
From X @pabnik.bsky.social @LabNikel is hiring a Research Assistant! Looking for an exciting opportunity to work in a dynamic and innovative environment @DTUBiosustain? Please see the description below and get in touch with @DeMaria_SynBio for inquires Metabolic #Engineering #SynBio #Biofluorination
November 1, 2023 at 8:19 PM
From X @pabnik.bsky.social @LabNikel is hiring a Research Assistant! Looking for an exciting opportunity to work in a dynamic and innovative environment @DTUBiosustain? Please see the description below and get in touch with @DeMaria_SynBio for inquires Metabolic #Engineering #SynBio #Biofluorination
X post highly recommended: Junior POSTDOC fellowship on Bacterial Quorum Sensing in gut Microbiota funded available in @KarinaXavierLab at @IGCiencia Portugal. Discover novel mechanisms of Chemical Communication in the Mammalian Gut Microbiota: Apply at karinaxavierlab.weebly.com/positions.html
October 22, 2023 at 3:43 PM
X post highly recommended: Junior POSTDOC fellowship on Bacterial Quorum Sensing in gut Microbiota funded available in @KarinaXavierLab at @IGCiencia Portugal. Discover novel mechanisms of Chemical Communication in the Mammalian Gut Microbiota: Apply at karinaxavierlab.weebly.com/positions.html