Bipartite interactions, antibiotic production and biosynthetic potential of the Arabidopsis leaf microbiome.
Bipartite interactions, antibiotic production and biosynthetic potential of the Arabidopsis leaf microbiome.
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DOI:
10.1038/s41564-018-0200-0
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发表时间:
2018-08
影响因子:
28.3
通讯作者:
Vorholt JA
中科院分区:
文献类型:
--
作者:
Helfrich EJN;Vogel CM;Ueoka R;Schäfer M;Ryffel F;Müller DB;Probst S;Kreuzer M;Piel J;Vorholt JA
Plants are colonized by phylogenetically diverse microorganisms that affect plant growth and health. Representative genome-sequenced culture collections of bacterial isolates from model plants, including Arabidopsis thaliana, have recently been established. These resources provide opportunities for systematic interaction screens combined with genome mining to discover uncharacterized natural products. Here, we report on the biosynthetic potential of 224 strains isolated from the A. thaliana phyllosphere. Genome mining identified more than 1,000 predicted natural product biosynthesis gene clusters (BGCs), hundreds of which are unknown compared to the MIBiG database of characterized BGCs. For functional validation, we used a high-throughput screening approach to monitor over 50,000 binary strain combinations. We observed 725 inhibitory interactions, with 26 strains contributing to the majority of these. A combination of imaging mass spectrometry and bioactivity-guided fractionation of the most potent inhibitor, the BGC-rich Brevibacillus sp. Leaf182, revealed three distinct natural product scaffolds that contribute to the observed antibiotic activity. Moreover, a genome mining-based strategy led to the isolation of a trans-AT polyketide synthase-derived antibiotic, macrobrevin, which displays an unprecedented natural product structure. Our findings demonstrate that the phyllosphere is a valuable environment for the identification of antibiotics and natural products with unusual scaffolds.
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DOI:
10.1073/pnas.1511688112
发表时间:
2015-11-10
影响因子:
11.1
作者:
Hillenmeyer, Maureen E.;Vandova, Gergana A.;Charkoudian, Louise K.
通讯作者:
Charkoudian, Louise K.
影响因子:
64.8
作者:
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通讯作者:
Schulze-Lefert, Paul
影响因子:
3.3
作者:
Gebhardt, K;Pukall, R;Fiedler, HP
通讯作者:
Fiedler, HP
影响因子:
6.4
作者:
Chodkowski JL;Shade A
通讯作者:
Shade A
影响因子:
2.7
作者:
Arrebola, E;Cazorla, FM;de Vicente, A
通讯作者:
de Vicente, A