Dataset Information

Monoterpene-indole-alkaloids-enriched-75-plants-dataset

ABSTRACT: This dataset was used to test the extracted spectrometric patterns of monoterpene indole alkaloid skeletons

INSTRUMENT(S): Agilent 6546 QTOF

ORGANISM(S): Cephalanthus Occidentalis (ncbitaxon:43461) Neolamarckia Cadamba (ncbitaxon:153762) Chimarrhis Parviflora (ncbitaxon:681421) Hunteria Zeylanica (ncbitaxon:1220079) Strychnos Chlorantha (ncbitaxon:1040868) Morinda Angustifolia (ncbitaxon:358831) Spermacoce Articularis (ncbitaxon:1475012) Strychnos Angustiflora (ncbitaxon:1040857) Morinda Panamensis (ncbitaxon:1127092) Strychnos Axillaris (ncbitaxon:1037789) Spermacoce Alata (ncbitaxon:1475013) Spirolobium Cambodianum (ncbitaxon:429529) Mitragyna Hirsuta (ncbitaxon:371154) Rauvolfia Micrantha (ncbitaxon:498201) Palicourea Azurea Cynanchum Pulchellum (ncbitaxon:1205774) Tabernaemontana Granatum Ophiorrhiza Baviensis (ncbitaxon:2599711) Melodinus Cochinchinensis (ncbitaxon:403110) Dyera Costulata (ncbitaxon:403085) Spermacoce Ovalifolia Neonauclea Purpurea Alstonia Mairei Neonauclea Sessilifolia Pagiantha Curvisepala Alstonia Macrophylla (ncbitaxon:693366) Melodinus Orientalis Melodinus Fusiformis (ncbitaxon:582713) Uncaria Gambir Plumeria Obtusa (ncbitaxon:85246) Strychnos Thorelii Uncaria Scandens (ncbitaxon:1442762) Ophiorrhiza Alatiflora Palicourea Amethystina Palicourea Galeottiana Adina Pilulifera (ncbitaxon:170035) Cynanchum Purpureum (ncbitaxon:1740890) Tabernaemontana Pauciflora (ncbitaxon:761086) Gardenia Linifolia Stemmadenia Pubescens Strychnos Minor (ncbitaxon:403121) Strychnos Cathayensis (ncbitaxon:1603838) Palicourea Padifolia (ncbitaxon:77861) Leuconotis Eugeniifolia (ncbitaxon:2516507) Strychnos Ovata Cinchona Officinalis (ncbitaxon:273781) Vincetoxicum Flexuosum (ncbitaxon:155563) Rauvolfia Littoralis (ncbitaxon:681485) Timonius Arboreus Isertia Laevis (ncbitaxon:61940) Melodinus Honbaensis Ophiorrhiza Japonica (ncbitaxon:367363) Strychnos Sonlaensis Guettarda Hirsuta Mitragyna Rotundifolia (ncbitaxon:170024) Trachelospermum Asiaticum (ncbitaxon:276781) Kopsia Singapurensis (ncbitaxon:1751000) Catharanthus Roseus (ncbitaxon:4058) Rauvolfia Verticillata (ncbitaxon:329875) Nauclea Orientalis (ncbitaxon:43526) Psychotria Peduncularis (ncbitaxon:77891) Timonius Flavescens (ncbitaxon:336053) Uncaria Lanosa (ncbitaxon:1085515) Guettarda Combsii (ncbitaxon:336033) Tabernaemontana Bovina Rauvolfia Tetraphylla (ncbitaxon:545371)

SUBMITTER: Kyo Bin Kang Mehdi Beniddir Pierre Le Pogam

PROVIDER: MSV000096137 | MassIVE | Sat Oct 19 09:40:00 BST 2024

REPOSITORIES: MassIVE

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Project description:Indole is ubiquitously synthesized by plants and bacteria and functions as an inter species signaling molecule to modulate a wide variety of cellular activities. However, it is not clear how the indole signal is perceived and responded by plant growth promoting rhizobacteria (PGPR) at the rhizosphere. Here, we demonstrated that indole enhanced antibiotic tolerance of Pseudomonas fluorescens 2P24, a PGPR well known for its biocontrol capacity. By conducting quantitative proteomic analysis, we showed that indole influences the expression of multiple genes including the emhABC operon encoding the major multidrug efflux pump in P. fluorescens 2P24. The indole-induced antibiotic tolerance was not related to bacterial dormancy or slow growth, but depended on the emhABC operon and the divergently transcribed TetR-like regulator emhR. By binding to the semi-palindromic operator sequence, EmhR repressed the expression of emhABC. It was further revealed that indole bound to EmhR and weakened the interaction between EmhR and the operator. This is consistent with our finding that indole-induced expression of the EmhABC efflux pump is dependent on EmhR. Using homology modeling and molecular dynamics simulation, we found that indole binding resulted in significantly decreased distance between the two DNA-recognizing α3 helices within the EmhR dimer, which would possibly account for its compromised DNA binding capacity. EmhR was further shown to globally influence protein expressions, especially transporters and proteins involved in the denitrification pathway. This EmhR-dependent, indole-induced antibiotic tolerance is likely to be prevalent in the Pseudomonas species, as the EmhR homologue in Pseudomonas syringae was also shown to be responsible for the indole-induced antibiotic tolerance. Taken together, our results revealed an indole-sensing transcription factor EmhR responsible for indole-induced antibiotic tolerance in Pseudomonas species and have important implications on the general mechanism for the indole sensing and responses in rhizobacteria.

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Monoterpene-indole-alkaloids-enriched-75-plants-dataset

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