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Plant immune responses to pathogen infection
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Overview
Plant stress perception occurs via complex signal transduction pathways, leading to the activation of appropriate responses. The overall goal of our research is to understand the molecular mechanisms governing disease resistance in plants and cross-talk between biotic and abiotic stress signalling pathways. Our studies are carried out in rice and Arabidopsis thaliana, as the model species for studies on functional genomics in dicotyledonous and monocotyledonous plants, respectively. Rice is also an important cereal crop. In particular, we investigate the impact of nutritional stress (deficiency and excess of phosphate or iron) in plant immune responses. The knowledge acquired in these studies will contribute to the establishment of novel concepts in the field of plant/pathogen interaction that can be useful for the management of plant diseases. More specifically, the research in our group focuses on the following topics:
i) Role and contribution of microRNAs (miRNAs) in plant innate immunity. Understanding interactions between signaling pathways induced by nutrient stress and immune signalling in rice.
ii) Impact of phosphate stress on leaf senescence in rice
iii) Molecular mechanisms underlying the arbuscular mycorrhizal symbiosis. Disease resistance in mycorrhizal rice plants.
Selected Publications
H. Martín-Cardoso, M. Bundó, B. Val-Torregrosa and B. San Segundo
Phosphate accumulation in rice leaves promotes fungal pathogenicity and represses host immune responses during pathogen infection.
(2024) Frontiers in Plant Science 14: 1330349. DOI: 10.3389/fpls.2023.1330349
Glòria Escolà, Víctor M. González-Miguel, Sonia Campo, Mar Catala-Forner, Concha Domingo, Luis Marqués and Blanca San Segundo
Development and Genome-Wide Analysis of a Blast-Resistant japonica Rice Variety.
(2023) Plants 12, 3536. DOI: 10.3390/plants12203536
B. Val-Torregrosa, M. Bundó, H. Martín-Cardoso, M. Bach-Pages, T-J. Chiou, V. Flors and B. San Segundo
Phosphate-induced resistance to pathogen infection in Arabidopsis
(2022) Plant Journal DOI:10.1111/tpj.15680.
B. Val-Torregrosa, M. Bundó, M. Deepika Mallavarapu, T-J Chiou, V. Flors and B. San Segundo
Loss-of-function of NITROGEN LIMITATION ADAPTATION confers disease resistance in Arabidopsis by modulating hormone signaling and camalexin content.
(2022) Plant Science 323:111374. DOI: 10.1016/j.plantsci.2022.111374
F. Sánchez-Sanuy, R. Mateluna-Cuadra, K. Tomita, K. Okada, G.A. Sacchi, S. Campo and B. San Segundo
Iron Induces Resistance Against the Rice Blast Fungus Magnaporthe oryzae Through Potentiation of Immune Responses
(2022) RICE 15, 68-91 DOI: 10.1186/s12284-022-00609-w
M. Bundó,, H. Martín-Cardoso, M. Pesenti, J. Gómez-Ariza, L. Castillo, J. Frouin, X. Serrat, S. Nogués, B. Courtois, C. Grenier, G.A. Sacchi and B. San Segundo.
Integrative approach for precise genotyping and transcriptomics of salt tolerant introgression rice lines
(2022) Frontiers in Plant Science 12:797141. DOI: 10.3389/fpls.2021.797141
S. Campo, F. Sánchez-Sanuy, R. Camargo-Ramírez, J. Gómez-Ariza, P. Baldrich, L. Campos-Soriano, M.Soto-Suárez and Blanca San Segundo
A novel Transposable element-derived microRNA participates in plant immunity to rice blast disease.
(2021) Plant Biotechnology Journal 19, 1798. DOI: 10.1111/pbi.13592.
L. Campos-Soriano, M. Bundó, M. Bach-Pages, S-F. Chiang, T-J Chiou and B. San Segundo
Phosphate excess increases susceptibility to pathogen infection in rice.
(2020) Molecular Plant Pathology 21, 555-570 DOI:10.1111/mpp.12916
S. Campo and B. San Segundo
Systemic induction of phosphatidylinositol-based signaling in leaves of arbuscular mycorrhizal rice plants.
(2020) Scientific Reports 10, 15896. DOI: 10.1038/s41598-020-72985-6
S. Campo, H. Martín-Cardoso, M. Olivé, E. Pla, M.M Català, MT Martínez-Eixarch and B. San Segundo.
Effect of root colonization by arbuscular mycorrhizal fungi on growth, productivity and blast resistance in rice.
(2020) Rice 13: 42-56. DOI: 10.1186/s12284-020-00402-7