RT Conference Proceedings
T1 Fengycin and the amyloid TasA of Bacillus subtilis stimulates the growth and immunization of plants by targeting the seed storages
A1 Berlanga-Clavero, María Victoria
A1 Molina-Santiago, Carlos
A1 Díaz-Martínez, Luis
A1 Pérez-García, Alejandro
A1 De-Vicente-Moreno, Antonio
A1 Romero-Hinojosa, Diego Francisco
K1 Bacillus (Bacteria)
K1 Amiloide
AB Beneficial microbes are known to stimulate the germination of the seeds; however, the exact mechanisms mediating these interactions are only beginning. Bacillus subtilis is a commonly detected member of the plant holobiont and provides multifaceted traits to the plant health. In this work, we demonstrated that B. subtilis triggered genetic and physiological responses in seeds that resulted in changes in the metabolic and developmental status of adult plants.A multidisciplinary approach based on microscopy, transcriptomics and metabolomics demonstrated that the chemically diverse extracellular matrix of Bacillus structurally cooperate in bacterial colonization of the seed storage tissues. The amyloid protein TasA and fengycin, two components of the extracellular matrix, differentially stimulated levels of ROS inside seeds after imbibition and targeted the oil bodies of the seed endosperm, provoking specific changes in lipid metabolism or accumulation of glutathione-related molecules that resulted in two different plant growth programs: the development of seed radicles or major growth and immunization of adult plants. Our findings prove the versatility of the bacterial ECM in establishing a mutualistic interaction with plants.
YR 2022
FD 2022
LK https://hdl.handle.net/10630/25068
UL https://hdl.handle.net/10630/25068
LA spa
NO Universidad de Málaga. Campus de Excelencia Internacional Andalucía Tech.
DS RIUMA. Repositorio Institucional de la Universidad de Málaga
RD 4 mar 2026