Academic Journal
Applications of the indole-alkaloid gramine modulate the assembly of individual members of the barley rhizosphere microbiota
| العنوان: | Applications of the indole-alkaloid gramine modulate the assembly of individual members of the barley rhizosphere microbiota |
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| المؤلفون: | Mauro Maver, Carmen Escudero-Martinez, James Abbott, Jenny Morris, Pete E. Hedley, Tanja Mimmo, Davide Bulgarelli |
| المصدر: | PeerJ, Vol 9, p e12498 (2021) |
| بيانات النشر: | PeerJ Inc., 2021. |
| سنة النشر: | 2021 |
| المجموعة: | LCC:Medicine LCC:Biology (General) |
| مصطلحات موضوعية: | Barley, Rhizosphere, Microbiota, Domestication, Gramine, Medicine, Biology (General), QH301-705.5 |
| الوصف: | Microbial communities proliferating at the root-soil interface, collectively referred to as the rhizosphere microbiota, represent an untapped beneficial resource for plant growth, development and health. Integral to a rational manipulation of the microbiota for sustainable agriculture is the identification of the molecular determinants of these communities. In plants, biosynthesis of allelochemicals is centre stage in defining inter-organismal relationships in the environment. Intriguingly, this process has been moulded by domestication and breeding selection. The indole-alkaloid gramine, whose occurrence in barley (Hordeum vulgare L.) is widespread among wild genotypes but has been counter selected in several modern varieties, is a paradigmatic example of this phenomenon. This prompted us to investigate how exogenous applications of gramine impacted on the rhizosphere microbiota of two, gramine-free, elite barley varieties grown in a reference agricultural soil. High throughput 16S rRNA gene amplicon sequencing revealed that applications of gramine interfere with the proliferation of a subset of soil microbes with a relatively broad phylogenetic assignment. Strikingly, growth of these bacteria appeared to be rescued by barley plants in a genotype- and dosage-independent manner. In parallel, we discovered that host recruitment cues can interfere with the impact of gramine application in a host genotype-dependent manner. Interestingly, this latter effect displayed a bias for members of the phyla Proteobacteria. These initial observations indicate that gramine can act as a determinant of the prokaryotic communities inhabiting the root-soil interface. |
| نوع الوثيقة: | article |
| وصف الملف: | electronic resource |
| اللغة: | English |
| تدمد: | 2167-8359 |
| Relation: | https://peerj.com/articles/12498.pdf; https://peerj.com/articles/12498/; https://doaj.org/toc/2167-8359 |
| DOI: | 10.7717/peerj.12498 |
| URL الوصول: | https://doaj.org/article/31390aed7beb4949a5cd94a9ffffa424 |
| رقم الانضمام: | edsdoj.31390aed7beb4949a5cd94a9ffffa424 |
| قاعدة البيانات: | Directory of Open Access Journals |
Full Text Finder | تدمد: | 21678359 |
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| DOI: | 10.7717/peerj.12498 |