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Title (Primary) Streptomyces-induced resistance against oak powdery mildew involves host plant responses in defense, photosynthesis, and secondary metabolism pathways
Author Kurth, F.; Mailänder, S.; Bönn, M.; Feldhahn, L.; Herrmann, S.; Große, I.; Buscot, F.; Schrey, S.D.; Tarkka, M.T.;
Journal Molecular Plant-Microbe Interactions
Year 2014
Department BZF; BOOEK; iDiv;
Volume 27
Issue 9
Language englisch;
POF III (all) T12;
UFZ wide themes RU1
Abstract Rhizobacteria are known to induce defense responses in plants without causing disease symptoms, resulting in increased resistance to plant pathogens. This study investigated how Streptomyces sp. strain AcH 505 suppressed oak powdery mildew infection in pedunculate oak, by analyzing RNA-Seq data from singly- and co-inoculated oaks. We found that this Streptomyces strain elicited a systemic defense response in oak that was, in part, enhanced upon pathogen challenge. In addition to induction of the jasmonic acid/ethylene–dependent pathway, the RNA-Seq data suggests the participation of the salicylic acid–dependent pathway. Transcripts related to tryptophan, phenylalanine, and phenylpropanoid biosynthesis were enriched and phenylalanine ammonia lyase activity increased, indicating that priming by Streptomyces spp. in pedunculate oak shares some determinants with the Pseudomonas-Arabidopsis system. Photosynthesis-related transcripts were depleted in response to powdery mildew infection, but AcH 505 alleviated this inhibition, which suggested there is a fitness benefit for primed plants upon pathogen challenge. This study offers novel insights into the mechanisms of priming by actinobacteria and highlights their capacity to activate plant defense responses in the absence of pathogen challenge.
ID 15305
Persistent UFZ Identifier https://www.ufz.de/index.php?en=20939&ufzPublicationIdentifier=15305
Kurth, F., Mailänder, S., Bönn, M., Feldhahn, L., Herrmann, S., Große, I., Buscot, F., Schrey, S.D., Tarkka, M.T. (2014):
Streptomyces-induced resistance against oak powdery mildew involves host plant responses in defense, photosynthesis, and secondary metabolism pathways
Mol. Plant-Microbe Interact. 27 (9), 891 - 900