Jasmonic acid pathway is required in the resistance induced by Acremonium sclerotigenum in tomato against Pseudomonas syringae
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Títol
Jasmonic acid pathway is required in the resistance induced by Acremonium sclerotigenum in tomato against Pseudomonas syringaeAutoria
Data de publicació
2022-02-09Editor
Elsevier ScienceDirectISSN
0168-9452Cita bibliogràfica
Llorens, E., Scalschi, L., Sharon, O., Vicedo, B., Sharon, A., & García-Agustín, P. (2022). Jasmonic acid pathway is required in the resistance induced by Acremonium sclerotigenum in tomato against Pseudomonas syringae. Plant Science, 318.Tipus de document
info:eu-repo/semantics/articleVersió
info:eu-repo/semantics/acceptedVersionParaules clau / Matèries
Resum
The use of fungal endophytes is considered as a new tool to confer resistance in plants against stresses. However, the mechanisms involved in colonization as well as in the induction of resistance by the endophytes ... [+]
The use of fungal endophytes is considered as a new tool to confer resistance in plants against stresses. However, the mechanisms involved in colonization as well as in the induction of resistance by the endophytes are usually unclear. In this work, we tested whether a fungal endophyte isolated from an ancestor of wheat could induce resistance in plants of a different class from the ones that were isolated from the beginning. Seeds of Solanum lycopersicum were inoculated with Acremonium sclerotigenum and after four weeks, seedlings were inoculated with the bacterium Pseudomonas syringae pv tomato. Plants inoculated with endophytes showed significantly lower symptoms of infection as well as lower levels of colony forming units compared with control plants. Moreover, the presence of the endophytes induced an enhancement of Jasmonic acid (JA) upon inoculation with P. syringae compared with endophyte free plants. To ascertain the implication of JA in the resistance induced by A. sclerotigenum, two mutants defective in JA were tested. Results showed that the endophyte is not able to induce resistance in the mutant spr2, which is truncated in the first step of JA biosynthesis. On the contrary, acx1 mutant plants, which are unable to synthesize JA from OPC8, show a phenotype similar to wild type plants. Moreover, experiments with GFP-tagged endophytes showed no differences in the colonization in both mutants. In conclusion, the jasmonic acid pathway is required for the resistance mediated by the endophyte A. sclerotigenum in tomato against the biotrophic bacterium P. syringae but is not necessary for the colonization. [-]
Publicat a
Plant Science, Volume 318 (May 2022)Entitat finançadora
FEDER/Ministry of Science Innovation and Universities-Spanish State Research Agency | Generalitat Valenciana | Universitat Jaume I
Codi del projecte o subvenció
AGL2017-85987-C3-1-R | GV/2019/028 | UJI-A2019-19
Drets d'accés
info:eu-repo/semantics/openAccess
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