MetaboLightsapplication/xmlftp://ftp.ebi.ac.uk/pub/databases/metabolights/studies/public/MTBLS15387/m_MTBLS15387_LC-MS___v2_maf.tsvftp://ftp.ebi.ac.uk/pub/databases/metabolights/studies/public/MTBLS15387/m_MTBLS15387_LC-MS__-1_v2_maf.tsvftp://ftp.ebi.ac.uk/pub/databases/metabolights/studies/public/MTBLS15387/a_MTBLS15387_LC-MS__-1.txtftp://ftp.ebi.ac.uk/pub/databases/metabolights/studies/public/MTBLS15387/i_Investigation.txtftp://ftp.ebi.ac.uk/pub/databases/metabolights/studies/public/MTBLS15387/a_MTBLS15387_LC-MS__.txtftp://ftp.ebi.ac.uk/pub/databases/metabolights/studies/public/MTBLS15387/s_MTBLS15387.txtprimary200OKftp://ftp.ebi.ac.uk/pub/databases/metabolights/studies/public/MTBLS15387Metabolites were identified using metDNA (Metabolite Identification and Dysregulated Network Analysis) against an in-house reference database at Metware Biotechnology (Wuhan, China). Differentially accumulated metabolites were screened by variable importance in projection (VIP) > 1 and |log2 fold change| >= 1.MetaboLightsPublicLiquid Chromatography MS -Shimadzu LC-30A UPLC system with a Waters ACQUITY UPLC HSS T3 column (1.8 um, 2.1 mm x 100 mm) at 40 C. Mobile phase A: water with 0.1% formic acid; mobile phase B: acetonitrile with 0.1% formic acid. Linear gradient of 5%-95% B over 9 min, 1 min hold at 95% B, then re-equilibration at 5% B. Flow rate 0.35 mL/min; injection volume 2 uL.Overexpression of elephant grass PpPEPC1b remodels root exudate profiles of rice under phosphate deficiency.Hainan UniversityZeping Cairoot exudate collection solutionmass spectrometry assaySamples were thawed and vortexed for 30 s, frozen overnight at -80 C and vacuum freeze-dried. Lyophilized material was reconstituted in 70% methanol containing internal standard at a 30-fold concentration ratio (e.g. 9 mL sample + 300 uL extraction solvent; internal standard stock 1000 ug/mL in 70% methanol, diluted to 250 ug/mL). Mixtures were vortexed for 15 min, sonicated in an ice-water bath for 10 min, centrifuged at 12000 r/min at 4 C for 3 min, and the supernatant was filtered through a 0.22 um membrane into autosampler vials.Oryza sativahttps://www.ebi.ac.uk/metabolights/MTBLS15387Zeping Cai. Hainan University. 992995@hainanu.edu.cn.Raw data were converted to mzXML format with ProteoWizard. Peaks were detected, aligned and retention-time corrected with XCMS in R; missing values were imputed with the K-nearest neighbour method.Genotype329605818@qq.comRice plants (Oryza sativa L. Zhonghua 11; wild type and PpPEPC1b-overexpression lines OE8, OE15, OE33) were grown hydroponically under low-Pi (5 uM KH2PO4) for 40 days. Roots were rinsed and immersed in 50 mL ultrapure water for 24 h in the dark; the root exudate collection solution was measured for pH and filtered through 0.45 um membranes. Pooled QC samples were prepared by mixing equal aliquots of all samples.Metabolomicsultra-performance liquid chromatography-mass spectrometryOryza sativaroot exudate collection solutionpooled quality control sampleMetabolomicstandem mass spectrometryAB SCIEX TripleTOF 6600+untargeted analysisuntargeted metabolitesShimadzu LC-30A UPLC systemroot exudateultra-performance liquid chromatography-mass spectrometryOryza sativaroot exudate collection solutionpooled quality control sampleMetabolomicstandem mass spectrometryAB SCIEX TripleTOF 6600+untargeted analysisuntargeted metabolitesShimadzu LC-30A UPLC systemroot exudateAB SCIEX TripleTOF 6600+ mass spectrometer in positive and negative electrospray ionisation (ESI) modes. Ion source gas 1 (GS1) 50 psi; ion source gas 2 (GS2) 60 psi; curtain gas (CUR) 25 psi; source temperature 550 C; ion spray voltage floating (ISVF) 5500 V (positive) and -4500 V (negative).Val-trpLumazineOctadec-9-ene-1-carboxylic acidN-IsovaleroylglycineFFA(18:0)3-(3,4-dimethoxyphenyl)-N-[2-(3,4-dimethoxyphenyl)ethyl]-3-(sulfooxy)propanimidic acidalpha-Cyclopiazonic acidPopulinDihydrodaidzeinRhamnazinThiolutinEthyl gallate[2-Hydroxy-5-(3,5,7-trihydroxy-6-methoxy-4-oxochromen-2-yl)phenyl] hydrogen sulate(2-Methylbenzyl)(pyridin-4-ylmethyl)amine9(S),12(S),13(S)-TriHOME(+)-MedicarpinDehydroabietic acidAlkanninPicrasin C2,3-Dinor-TXB2Citrulline[4]-Gingerdiol 3,5-diacetate2-[(3,4-dihydroxy-2-oxo-5-phosphonatooxypentyl)amino]benzoate1-Palmitoyl-2-linoleoyl-sn-glycero-3-phosphateCurryangineGlyceocarpin(4Z,7Z,10Z,13Z)-nonadeca-4,7,10,13-tetraene-1-sulfonic acid3-hydroxy-4-methoxy-5-(2,3,4,5-tetrahydroxybenzoyloxy)benzoic acid1-MethylxanthineOctadecanedioic acidMeglumine5,6-dihydroxy-7-methoxy-2-phenyl-8-[3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl]-4H-chromen-4-one3,4-Dihydroxy-9,10-secoandrosta-1,3,5(10)-triene-9,17-dione5'-DehydroadenosinePhenazine-1,6-dicarboxylic acidNordihydrocapsiate3-(2,3-Dioxo-1,2,3,4-tetrahydro-quinoxaline-6-sulfonyl)-propionic acid3-Methoxybenzoic acidPilocereineIngenol4-Hydroxybenzaldehyde6-HydroxyflavoneSer-Pro-LysSilicristinN-[2-(3,4-Dihydroxyphenyl)ethyl]hexadecanamide(3-Ethenylphenyl) hydrogen sulatePhenylalanyltyrosine2-Sulfooxy-2-deoxytartaric acidTrimethylsilyl heptadecanoateFastigilin BAgnusideN-benzyl-1-pentyl-1H-indole-3-carboxamideMaltitolGlu-ArgEurycomalactoneThymidine-5'-phosphate(dTMP)Nerolidyl diphosphate(2,3-Dihydroxy-4-oxo-5-phosphonatooxypentyl) phosphatePhenylalanylserine3-{2-[5-(3,3-dimethyloxiran-2-yl)-3-methylpent-2-en-1-yl]-3,4-dihydroxyphenyl}propanoic acid3,7,4'-Trihydroxyflavone13-Apo-beta-carotenone6-Mercaptopurine ribonucleoside 5'-diphosphate3-(2-Methoxyphenyl)propanoic acidMet-GlnN-AcetylvanilalanineLonchocarpeninLeu-Gly-Leu4-Oxooctadeca-9,11,13-trienoic acidPiceatannol-3'-O-glucosideLysoPE(0:0/18:2(9Z,12Z))cis-coumarinic acid-beta-D-glucosideMadecassic acid3-(4-Iodophenyl)-2-mercapto-(Z)-2-propenoic acid4-hydroxy Nonenal Mercapturic Acid3-Isomangostin11-O-Demethylpradinone I(E)-4-hydroxy-1-(4-hydroxy-3-methoxyphenyl)dodec-1-en-3-oneMalathion diacidD-erythro-Imidazoleglycerol Phosphate Monohydrate2,6,7-Trihydroxy-9-methylxanthen-3-one7-DeazaadenosineEpimestrolCer(d18:0/16:0)(±)-3-Hydroxynonanoic acidMethylthiouracil3,4-Dimethoxycinnamic acidGuanosineTG(22:1(13Z)/24:1(15Z)/24:1(15Z))2-Cyclohexyl-2-hydroxy-2-phenylacetic acid1-tetradecanoyl-2-(9Z-tetradecenoyl)-glycero-3-phosphoserine1-Hydroxyanthraquinone13-(2-Methylcrotonoyl)oxylupinine3-MethylxanthineVanillic acid6-GeranylchrysinDamascenone(2S,3R)-4-methylidene-2-octyl-5-oxooxolane-3-carboxylic acidHexadecanedioic acid(Z)-1-(3-Ethyl-5-methoxy-2,3-dihydrobenzothiazol-2-ylidene)propan-2-onePhenanthro[10,1-bc]pyran-5,11(1H,4H)-dione, 2,3,3a,6abeta,7,7aalpha,8,11a,11balpha,11c-decahydro-1alpha,3beta,3abeta-trihydroxy-2beta,10-dimethoxy-3,8alpha,11abeta,11cbeta-tetramethyl-Psoromic acidNonic acidL-Fucose3-tert-Butyl-4-hydroxyanisole2,4-Di-tert-butylphenolIsorhynchophyllinePC(DiMe(13,5)/MonoMe(13,5))Isorhamnetin3,8-Dihydroxy-1-pentanoyl-6-pentyl-11H-dibenzo(b,e)(1,4)dioxepin-11-oneGlu-Gly-TrpRhamnose6-[3,4-dihydroxy-4-(1-oxo-1H-isochromen-3-yl)butoxy]-3,4,5-trihydroxyoxane-2-carboxylic acidDicyclohexyl phthalate12a-HYDROXY-5-DEOXYDEHYDROMUNDUSERONEIsogentisinMalonic acid3,6,7,8-Tetrahydroxy-2-naphthoateLicoricesaponin C26-{[2-(3,4-dihydroxyphenyl)-7-methoxy-4-oxo-6-[3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl]-4H-chromen-5-yl]oxy}-3,4,5-trihydroxyoxane-2-carboxylic acid(±)5(6)-DiHETE4,4'-Diapolycopenedial2-[[3,4-Dihydroxy-5-(3,4,5-trihydroxybenzoyl)oxybenzoyl]amino]acetic acidFFA(16:0)Lauryl glucosideFumonisin b15,7-Dihydroxy-2-(4-hydroxy-3-methoxy-phenyl)-3,6,8-trimethoxy-chromen-4-oneD-ErythrosePA(20:4(8Z,11Z,14Z,17Z)/14:0)dTDP-3,4-didehydro-2,6-dideoxy-alpha-D-glucose(2-)Paspaline BDihydroferulic acid(8)-ShogaolPrim-O-glucosylcimifugin7-HydroxyflavanoneIle-SerAdenosine2-Hydroxy-3-(sulfooxy)benzoic acid3,4,5-Trihydroxy-6-[3-(4-methoxyphenyl)propoxy]oxane-2-carboxylic acid1-(2-Hydroxy-3,4-dimethoxyphenyl)-3-(phenyl)propan-1-one7,3'-DihydroxyflavoneSafflor yellow APE-NMe(14:0/14:1(9Z))Uric acid3,4,5-trihydroxy-6-{[(16R)-5,7,11-trihydroxy-8,8,10,16-tetramethyl-3-[1-(2-methyl-1,3-thiazol-4-yl)prop-1-en-2-yl]-9-oxo-17-oxa-4-azabicyclo[14.1.0]heptadec-4-en-12-yl]methoxy}oxane-2-carboxylic acid1-Palmitoylglycerol 3-phosphate12,13-DiHOME11,12-DiHETrEMatairesinol4-Allyl-2-methoxyphenyl 2-hydroxybenzoate[2,6-Dihydroxy-3-(3,5,6,7-tetrahydroxy-4-oxochromen-2-yl)phenyl] hydrogen sulateTrans dehydrorosinone15-Hydroxy-5,8,11,13-eicosatetraenoic acidLeu-Val-Val11-Oxoursolic acid acetatePhenylpyruvic acid3-Hydroxycinnamic acid3,5-Dinitrosalicylic acid2,6-dimethoxy-4-[7-methoxy-3-methyl-5-[(E)-prop-1-enyl]-2,3-dihydro-1-benzofuran-2-yl]phenolSucrosePhenylalanylphenylalanineMelilotosideVulpinic acid1-Hexadecanoyl-2-(9Z-octadecenoyl)-sn-glycero-3-phosphoserineCellobiotolGlucose11(12)-EpETrE-EA(S)-Mevalonic acid-5-pyrophosphate[2-hydroxy-3-(3-oxoprop-1-en-1-yl)phenyl]oxidanesulfonic acid4',7-Dihydroxy-3',5'-dimethoxyflavoneHypoxyloneCID 6443057(S)-AcenocoumarolN-[(1R,2R)-1-hydroxy-3-(4-morpholinyl)-1-phenylpropan-2-yl]decanamideAtrinositolN-Acetyl-L-tyrosineFlavokawain bN-omega-Propyl-L-arginineIcosa-5,14-dienoic acidBiosone2-Dodecylbenzenesulfonic acidTerephthalic acidPyrethrosin3,4,5-trihydroxy-6-{[5-methoxy-6-(3-oxoprop-1-en-1-yl)-2H-1,3-benzodioxol-4-yl]oxy}oxane-2-carboxylic acid1,2-di-(9Z-tetradecenoyl)-sn-glycero-3-phosphoserine9s,13r-12-Oxophytodienoic AcidDioctyl phthalate5,6-Dihydroxyflavone4-Hydroxyretinoic acid5alpha-Androstane-3alpha,17beta-diol disulfateFlavin Single Nucleotide(FMN)1-O-Hexadecyl-2-acetyl-sn-glycerolEpsilon-pyrromycinone5-hydroxy-4-(3-hydroxyphenyl)-8,8-dimethyl-6-(2-methylpropanoyl)-2H,8H-pyrano[2,3-f]chromen-2-oneMaritimetinDisoxarilTrehaloseZearalenone(1R,2R,3S,6S,10S,11S,13S,14S)-11-(1-Hydroxypropan-2-yl)-3,7,10-trimethyl-15-oxapentacyclo[7.5.1.02,6.07,13.010,14]pentadecane-3,9,14-triolInositol 1,3-bisphosphate10-Oxo-11,15-phytodienoic acidTG(22:0/22:5(4Z,7Z,10Z,13Z,16Z)/24:1(15Z))[4-(4-methyl-3-oxopentyl)phenyl]oxidanesulfonic acid19-[(2S,3S)-3,6-Dihydro-3-methyl-6-oxo-2H-pyran-2-yl]-17-ethyl-6-hydroxy-3,5S,7S,9R,11,15R,hexamethyl-8-oxo-2E,10E,12E,16Z,18E-nonadecapentaenoic acid5-Amino-2-(p-toluidino)benzenesulphonic acid(2R,4S)-2-{(R)-carboxy[(phenylacetyl)amino]methyl}-5,5-dimethyl-1,3-thiazolidine-4-carboxylic acid4-Nitrophenol4-Hydroxy-3-all-trans-heptaprenylbenzoateDaphnetoxin, 12-((1-oxo-2,4,6-decatrienyl)oxy)-, (12-beta(2E))-N-[1-(Hydroxymethyl)-2-hydroxy-3-heptadecenyl]octadecaneamideIsovitexin 2''-O-arabinosideD-Sorbitol-6-phosphate4-Methylumbelliferyl glucuronidePaptgaN-Succinyl-2-amino-6-oxopimelate2-{3-[(E)-2-(2,4-dihydroxyphenyl)ethenyl]-5-hydroxyphenoxy}-6-(hydroxymethyl)oxane-3,4,5-triol4-{1-hydroxy-3-[4-hydroxy-3-(3-methylbut-2-en-1-yl)phenyl]propyl}benzene-1,3-diolPA(18:3(9Z,12Z,15Z)/18:3(6Z,9Z,12Z))1-(9Z-tetradecenoyl)-2-(9Z-hexadecenoyl)-sn-glycerol3-Aminobutanoic acid1-(1Z-octadecenyl)-2-(4Z,7Z,10Z,13Z,16Z,19Z-docosahexaenoyl)-sn-glycero-3-phosphocholine1-Docosanoyl-sn-glycero-3-phosphocholineTetrahydroalstonine12(S),20-diHETE1-Tetradecanoyl-2-eicosanoyl-glycero-3-phosphoserine20,21-diprenylterpendole JCitric acidEmodinLys-Arg3-Hydroxy-3-methyloxindoleEtidronic acid1-Eicosanoyl-sn-glycero-3-phosphocholine12-KETE[(2R,3R,4S,5S,6R)-2-[(1R,2Z,3S,4R,5S)-2-(cyanomethylidene)-3-hydroxy-4,5-dimethoxycyclohexyl]oxy-4,5-dihydroxy-6-(hydroxymethyl)oxan-3-yl] (Z)-3-(4-hydroxy-3-methoxyphenyl)prop-2-enoateN-Acetyl-L-arginineoxidized Watasenia luciferin(2-){[(2Z)-2-[(3-hydroxyphenyl)methylidene]heptyl]oxy}sulfonic acidFarnesylthioacetic acidAknadicineMedicagenic acidN-[[4-[(pyridin-2-ylamino)methyl]phenyl]methyl]pyridin-2-amine7,8-Dimethyl-10-(2'-acetoxyethyl)isoalloxazineZingerone3-(3-hydroxyphenyl)-2-phenyl-4-[(E)-2-phenylethenyl]-2,3-dihydro-1-benzofuran-6-ol(±)8(9)-DiHET3-[2-(3,7-dimethylocta-2,6-dien-1-yl)-3,4,5-trihydroxyphenyl]propanoic acid2-BenzylmalateLeu-Gly-GlyD-glycero-D-altro-octulose 8-phosphate2,7-Dihydroxy-5-methyl-1-naphthoic acid2'-Deoxyuridine8-Hydroxy-7-methoxycoumarinIsodomedinSakuranetinDimoxystrobinButane-1,2,3,4-tetrolThr-Ser-Lys3-[[2-(3-Hexylanilino)-2-oxoethyl]amino]propanoic acidPhyllalbine(1S)-((2R,4S,5R)-5-Ethylquinuclidin-2-yl)(quinolin-4-yl)methanolN-undecanoyl-L-Homoserine lactoneFloionolic acidHis-Asp-LysHelminthosporal3-[3,5-dihydroxy-4-(sulfooxy)benzoyloxy]-2,4,5-trihydroxybenzoic acid5-(6-Hydroxy-2,5,7,8-tetramethyl-chroman-2-YL)-2-methyl-pentanoic acidbeta-CryptoxanthinLycodine6-({4,5-Dihydroxy-2-methyl-6-[(3,4,5,6-tetrahydroxyoxan-2-yl)methoxy]oxan-3-yl}oxy)-3,4,5-trihydroxyoxane-2-carboxylic acid1-Stearoyl-2-oleoyl-sn-glycero-3-phosphocholine8-(3,3-DMA)-3-methylgalanginCardamoninLys-TyrColchicine3',4',5'-Trimethoxy-6-hydroxyflavone(E)-1,7-bis(4-hydroxyphenyl)hept-4-en-3-one2-[4-[(E)-1,2-diphenylbut-1-enyl]phenoxy]acetic acidTG(22:0/24:0/24:1(15Z))N-[(3S)-2-oxothiolan-3-yl]butanamide(±)12-HEPE12-Oxo-2,3-dinor-10,15-phytodienoic acidHonokiolBenzoylmalic acidAloeresin ACYCLOPIAZONIC ACIDPrecorrin-2(7-)Gly-Leu-PheHexahydrocurcuminTriptophenolide4-(3,5-Diphenylcyclohexyl)phenol4-O-beta-D-glucosyl-4-coumaric acid3',5'-Cyclic IMPas-Triazin-3(2H)-one, 6-(benzylthio)-5-(methylthio)-1,2-Dimyristoleoyl-sn-glycero-3-phosphocholine5,7,8-Trihydroxy-2-(3,4,5-trihydroxyphenyl)-4H-1-benzopyran-4-one(1S,2R)-5,7,8-trimethoxy-2,3-dimethyl-1-(2,4,5-trimethoxyphenyl)-1,2-dihydronaphthalene3-[2,4-dihydroxy-3-(3-methylbut-2-en-1-yl)phenyl]-1-(3,4-dihydroxyphenyl)propan-1-oneLolitrem BBetulonic acid2-acetamido-2-deoxy-3-O-(4-deoxy-alpha-L-threo-hex-4-enopyranosyluronate)-4-O-sulfonato-beta-D-galactopyranose(2-)Farrerol3,4,5-trihydroxy-6-[(5-hydroxy-4-methyl-2-oxo-2H-chromen-7-yl)oxy]oxane-2-carboxylic acidResorcinol sulfoxide1,9-Heptadecadiene-4,6-diyne-3,8-diolalpha-L-Fucp-(1->3)-[beta-D-Galp-(1->4)]-D-GlcpNAc1-Aminocyclohexanoic acid12-Hydroxyeicosapentaenoic acid, (12R)-PseudoyohimbineAmlaic acidThiamine phosphoric acid esterCannabichromene[3-(2H-1,3-benzodioxol-5-yl)-1-(4-methoxy-1-benzofuran-5-yl)-3-oxopropoxy]sulfonic acidL-Threonyl-L-alanyl-L-lysine22-Hydroxydocosanoic acidLysoPE 16:02,4,5-trihydroxy-3-[3-hydroxy-4-(sulfooxy)-5-(3,4,5-trihydroxybenzoyloxy)benzoyloxy]benzoic acidKikkanol A3-[3,4-dihydroxy-5-(3,4,5-trihydroxybenzoyloxy)benzoyloxy]-5-hydroxy-4-methoxybenzoic acidSorbitol1D-myo-inositol 1,2-cyclic phosphateNaringeninDigoxinXanthohumolDL-2-(2,4-Dinitroanilino)-4-(methylsulphinyl)butyric acidDeoxysappanone B 7,3'-dimethyl etherZinniol(-)-Hydroxymatairesinol3,4,5-trihydroxy-6-(2,4,6-trihydroxyphenoxy)oxane-2-carboxylic acidMannose 6-phosphate1,2-Dipalmitoyl-sn-glycerol 3-phosphateL-Homoserine1,11-Undecanedicarboxylic acidGuanosine 3',5'-cyclic monophosphateL-SaccharopinePhosphoenolpyruvate[2-(3,5-dihydroxyphenyl)-5,7-dihydroxy-4-oxo-3,4-dihydro-2H-1-benzopyran-3-yl]oxidanesulfonic acid2,6-Bis(3-methyl-2-butenyl)-4-acetylphenolLeu-Asn-HisBenzenesulfonic acid, undecyl-VinblastineTyr-Glu-LeuPicrotin2'-Deoxyinosine2-Hydroxyfluorene5,6,7-trihydroxy-2-phenyl-8-(3,4,5-trihydroxyoxan-2-yl)-4H-chromen-4-oneN-lactoyl-phenylalanine5H-Benzocyclohepten-5-one, 1,8-bis((2R,3R)-3,5,7-trihydroxy-2H-1-benzopyran-2-yl)-3,4,6-trihydroxy-7-[4,6-Dihydroxy-2-(3-hydroxyocta-1,5-dienyl)oxan-3-yl]hept-5-enoic acid5,6,7-trihydroxy-2-(4-hydroxyphenyl)-8-(3,4,5-trihydroxyoxan-2-yl)-4H-chromen-4-one3-Acetoxypregn-16-en-12,20-dioneRibonic acidGemfibrozilForskolinepi-Lipoxin A4Ethyl hexadecanoate[8]-DehydrogingerdionePhe-Pro-Ala5S-HpEPE3,9-DihydroxypterocarpanTetrahydrocurcumin9-FluorenoneFFA(12:0)9H-Pyrrolo[1',2':2,3]isoindolo[4,5,6-cd]indol-9-one, 10-acetyl-2,6,6a,7,11a,11b-hexahydro-11-hydroxy-7,7-dimethyl-, (6aR,11aS,11bR)-Cys-CysRhapontigeninPA(18:3(9Z,12Z,15Z)/18:0)1,3-Dihydroxy-6-methoxy-8-methyl-9-xanthenonebeta-D-Glucopyranose, 1-thio-, 1-(4-(methylsulfinyl)-N-(sulfooxy)butanimidate)Pseudobaptigenin3-CarbethoxypsoralenD-Mannose5-(Tetradecyloxy)-2-furoic acidN-[2-(3,4-dimethoxyphenyl)ethyl]-3-(3-hydroxy-4-methoxyphenyl)propanamideAnthemis glycoside AMyxochromide S3Caffeic acid phenethyl esterL-TryptophanKalbreclasine(Hydroxymethyl)phosphonic acidUNII-HYE7O27HAO component ASKIVFGGGGIGKH-HXUWFJFHSA-N3-Methyladipic acidTrunkamideSempervirene8,15-DiHETE1,8-Diazacyclotetradecane-2,9-dioneXylobiose(-)-AcanthocarpanRhapontinNordihydroguaiaretic acid2-hydroxy-2-[8-hydroxy-2-methyl-2-(4-methylpent-3-en-1-yl)-2H-chromen-5-yl]acetic acidIndole-4-carboxaldehydeCudraflavanone BGlycitinSciadonic acid3,4-Dihydro-8-hydroxy-3-(3-hydroxy-4-methoxyphenyl) 1H-2-benzopyran-1-onePro-leu1,2-Dimyristoyl-rac-glycero-3-phospho-N-methylethanolamine8-HdoheChorismic acidSilandrin(E)-1-(4-hydroxy-3-methoxyphenyl)dec-1-en-3-oneL-Cysteinesulfinic acidD-phenylalanineTrp-Trp(±)9-HpODEN-CaffeoylputrescineAspulvinone GCannabidiolic acidOstruthinbeta-D-Mannosylphosphodecaprenolbeta-L-fucose 1-phosphateHematoxylinTenonitrozoleOxiglutatione9-Oxo-nonanoic acidEuxanthoneGlu-HisXanthosine 5'-monophosphate1,2-Dioleoyl-sn-glycerol-3-phosphateIsopentenyl pyrophosphate1-Palmitoyl-2-oleoyl-sn-glycero-3-phosphateGanoderic acid Mf4-[5-(benzylsulfanyl)-4-methyl-4H-1,2,4-triazol-3-yl]aniline2-Phenylbutyric acidGuanidinosuccinic acid4-Iodo-2,5-dimethoxyphenethylamineEthyl 4-[(ethylcarbamothioyl)amino]benzoateQuercetin 3-xylosyl-(1->6)-glucoside1-O-AcetylbritannilactoneTaurocyamineBrazilin(E)-2-methyl-6-(4,4,8,10,14-pentamethyl-3-oxo-5,6,7,9,11,15,16,17-octahydrocyclopenta[a]phenanthren-17-yl)hept-2-enoic acidAcetylvalerenolic acid1-tetradecanoyl-2-(9Z-tetradecenoyl)-glycero-3-phosphoethanolamineDipentyl phthalateBergaptolAcetic acid7alpha,12beta-Dihydroxy-5alpha-cholan-24-oic AcidO,O-Dimethyl dithiophosphateHumulone(±)-erythro-Isoleucine4-Dodecylbenzenesulfonic acidHippuric acid1-(4-hydroxy-3-methoxyphenyl)-3-(4-methoxy-1-benzofuran-5-yl)propane-1,3-dione2-Polyprenyl-3-methyl-6-methoxy-1,4-benzoquinone2-{[hydroxy(2,3,4-trihydroxyphenyl)methylidene]amino}acetic acidRishitin1,7-Bis(4-hydroxyphenyl)-3-heptanone8-MethoxyalkynurateD-Allose3',4'-Dimethoxy-2'-hydroxychalconeCyclo(-D-Tyr-Arg-Arg-Nal-Gly-)1,4-Dihydroxy-2-naphthoic acid4-Hydroxycyclohexylcarboxylic acidOxaloglutarateAtractyloside IOroxylin A-7-o-beta-D-glucuronideEthyl tetradecanoateGlucobrassicin-1-SulfonateAnthragallolAzobenzene-4-sulfonic acidLyngbic acidOxoadipic acid5-KETE3-HydroxyflavoneN-Tris(hydroxymethyl)methyl-2-aminoethanesulfonic acidQuercetin 3-O-alpha-L-rhamnosideRibose-1-phosphateInosinePhorbol caprate, tiglateLumichromeEmopamilGallocatechin gallate2'-Deamino-2'-hydroxyparomamine12(S)-HpEPE[3,5,7-trihydroxy-2-(4-hydroxyphenyl)-3,4-dihydro-2H-1-benzopyran-4-yl]oxidanesulfonic acidMollicellin I2,3-dimethoxy-5-[7-methoxy-3-methyl-5-(prop-1-en-1-yl)-2,3-dihydro-1-benzofuran-2-yl]phenolNorlichexanthone3-(2,4-dihydroxy-3,5-dimethoxyphenyl)prop-2-enoic acid4-oxo-4-(3-pyridyl)butyraldehyde6-DecylubiquinolGcNeuCellobiose4-Hydroxycinnamic acid3-[3,4-Dihydroxy-4-(hydroxymethyl)oxolan-2-yl]oxy-1,8-dihydroxy-6-methylanthracene-9,10-dione2'-Deoxyguanosine-5'-triphosphate2-Amino-3-phosphonopropionic acidn-(alpha-Linolenoyl) tyrosine2-amino-N-phenyl-4,5,6,7-tetrahydro-1-benzothiophene-3-carboxamide4-Hydroxybenzoic acidFarnesyl diphosphate2-{3-[(6-carboxy-3,4,5-trihydroxyoxan-2-yl)oxy]-5-methoxyphenyl}-3-hydroxy-5-sulfino-3,4-dihydro-2H-1-benzopyran-7-olate13-[O(2')-beta-D-glucopyranosyl-beta-D-glucopyranosyloxy]docosanoate5,6-DHETEpigallocatechin gallate[2-(5,7-dihydroxy-4-oxo-2-phenyl-4H-chromen-6-yl)-4-hydroxy-6-methyl-5-oxooxan-3-yl]oxidanesulfonic acidQuercetinVal-Pro-Leu2-amino-4-(S-butylsulfonimidoyl)butanoate2-(1H-indole-3-carbonylamino)acetic acidMethyl dihydrojasmonateHesperidin1,3,4-Trihydroxy-5-oxocyclohexane-1-carboxylic acid4-[(3Z)-4-(4-hydroxyphenyl)hex-3-en-3-yl]benzene-1,2-diol5,7-dihydroxy-2-(2,3,4-trihydroxyphenyl)-4H-chromen-4-one1,2-Dipalmitoleoyl-sn-glycero-3-phosphoethanolamine1-Linoleoyl-3-docosahexaenoyl-sn-glycerol(2E,6E)-2,6-bis(pyridin-4-ylmethylene)cyclohexanone4-Hydroxy-2-(1-methylethenyl)-2,3-dihydrobenzofuran-5-carboxylic acidHis-Gln-LysLeurocristineAcetyl-maltose1,2-di-(9Z-tetradecenoyl)-sn-glycero-3-phosphoethanolamineSalidroside3,4,5-trihydroxy-6-[4-(5-hydroxy-7-methoxy-8-methyl-4-oxo-4H-chromen-3-yl)-2-methoxyphenoxy]oxane-2-carboxylic acid12S-HHTN'-nitrosonornicotinebis(3-methylbut-2-en-1-yl)benzene-1,2,3,5-tetrolN-3-Oxo-Dodecanoyl-L-Homoserine Lactone3-Acetyl-11-keto-beta-boswellic acidDesacetyl-nitazoxanidePinolidoxinIsopalmitic acidL-Argininosuccinic acidBotrydial[2-methoxy-4-(3,5,6-trihydroxy-7-sulinooxy-3,4-dihydro-2H-chromen-2-yl)phenyl] hydrogen sulate3-Iodo-5-methoxy-4-propoxybenzaldehyde(1S,2S,6S,7S,9R,14S,16S,17R)-14,16-dihydroxy-4,15-dimethoxy-2,6,14,17-tetramethyl-10-oxatetracyclo[7.7.1.02,7.013,17]heptadec-4-ene-3,11-dione5-HydroxypseudobaptigeninNigakilactone NNigakilactone M13-Hpode2,3-dinor Thromboxane B12-Hexyldecanoic acidPyridoxamine phosphate3,4,5-trihydroxy-6-{[(2Z)-6-hydroxy-2-(phenylmethylidene)heptyl]oxy}oxane-2-carboxylic acidN-Isovalerylglutamic acid2-[4-(4-Methylbenzenesulfonyl)piperazin-1-yl]pyridine-3-carbonitrile6-[5,7-Dihydroxy-2-(4-hydroxy-3-sulooxyphenyl)-4-oxochromen-3-yl]oxy-3,4,5-trihydroxyoxane-2-carboxylic acid(+)-EudesminPhosphine-biotinHomoserine, O-succinyl-5Z,8Z,11Z,14Z-Eicosatetraenedioic acidAuriculosideAcrivastine1-Palmitoyl-2-myristoyl-sn-glycero-3-phosphocholine2'-Hydroxy-4,4',6'-trimethoxychalconeLabetalolFFA(18:4)Glu-Thr3-(2,4'-Dihydroxy-3',5'-dimethoxyphenyl)propanoic acidOrotic acidIndole-3-acetamideMethylmalonic acid1,2-DiphenylhydrazineDaphnin3-Hydroxy-3',4'-dimethoxyflavoneAbscisic acid[3-Hexadecanoyloxy-2-(9-oxononanoyloxy)propyl] 2-(trimethylazaniumyl)ethyl phosphateRhodojaponin III 9,11-diacetate2-(1h-1,2,4-triazol-5-yl)-1h-isoindole-1,3(2h)-dioneurolithin AD-Mannitol 1-phosphate3-Phosphoglyceric acid5S-Hydroperoxy-18R-hydroxy-6E,8Z,11Z,14Z,16E-eicosapentaenoic acid2,3-Diphosphoglyceric acidAdiantifolineUsnic acidAlanylprolinePhe-Ala-LeuUndecanedioic acidSQDG 32:03,4-dihydroxy-5-(2,3,4,5-tetrahydroxybenzoyloxy)benzoic acid6-[(2Z)-2-benzylideneheptoxy]-3,4,5-trihydroxyoxane-2-carboxylic acid3-Phenylpropyl glucosinolate4H-1-Benzopyran-4-one, 5,7-dihydroxy-2-(4-hydroxyphenyl)-3,6,8-trimethoxy-N-(2-ethylphenyl)-2,3-dihydro-1H-cyclopenta[b]quinolin-9-amineMarrubiinTraumatindTDP-4-oxo-2-deoxy-alpha-D-pentos-2-eneCajanolSedoheptuloseDehydroabietamidePhe-Phe{4-[2,3-dioxo-3-(2,4,6-trihydroxy-3-methoxyphenyl)propyl]-2-methoxyphenyl}oxidanesulfonic acidRosmarinineHis-Ala-LysTenitramineCromolyn2-O-alpha-L-Rhamnopyranosyl-D-glucopyranoseRaffinoseAzelaic acid4-(3,7-dimethylocta-2,6-dien-1-yl)benzene-1,2,3,5-tetrolDioleoylphosphatidic acid5-(7-Acetyloxy-4-methoxycarbonyl-9-methyl-11-oxo-10-oxatricyclo[6.3.2.01,7]tridec-3-en-9-yl)-2-methylpenta-2,4-dienoic acidTryptophyl-leucyl-glutamic acid3-[3,4-dihydroxy-5-(2,3,4,5-tetrahydroxybenzoyloxy)benzoyloxy]-4,5-dihydroxybenzoic acidCallicarponeN-Acetylglucosamine-1-phosphateSpaglumic acidArginyl-GlutamineN-Acetylpyrrolidine(2R)-2-hydroxy-N-[(2S,3S,4R)-1,3,4-trihydroxyoctadecan-2-yl]hexadecanamide1-Phenyl-2-hexanone[2,6-dihydroxy-4-(3,5,7-trihydroxy-3,4-dihydro-2H-1-benzopyran-2-yl)phenyl]oxidanesulfonic acidN-Formyl-Met-Leu-Phe5-(3,4-Diacetoxybut-1-ynyl)-2,2'-bithiophene3,4,5-Trihydroxy-6-[4-hydroxy-5-(3-hydroxyphenyl)pentanoyl]oxyoxane-2-carboxylic acidAngoletinPE(14:1(9Z)/P-18:1(11Z))(+)-7-iso-Jasmonic acid[(1R,2R,6S,7S,8R,10S,11S,12R,14S,16S,17R,18R)-6,7-dihydroxy-8-(hydroxymethyl)-4,18-dimethyl-14-nonyl-5-oxo-16-prop-1-en-2-yl-9,13,15,19-tetraoxahexacyclo[12.4.1.01,11.02,6.08,10.012,16]nonadec-3-en-17-yl] benzoateRutin(1R,3S,9R,10S,13R,15E,17E,19E,21E,23R,25S,26R,27S)-23-[(2R,3S,4S,5S,6R)-4-amino-3,5-dihydroxy-6-methyloxan-2-yl]oxy-10-ethyl-1,3,9,27-tetrahydroxy-13-methyl-7,11-dioxo-12,29-dioxabicyclo[23.3.1]nonacosa-15,17,19,21-tetraene-26-carboxylic acid(-)-SedaminePS(22:2(13Z,16Z)/24:1(15Z))Microhelenin CXylitolGeranyl diphosphate3,6-Dihydroxy-2H-1-benzopyran-2-one2'-DeoxyguanosineDioonflavoneSantinWin VIThalidasineDaidzeinVanillin(+)-catechin 7-O-beta-D-xylosideLucidinfalseRoot exudate metabolomics of PpPEPC1b-overexpressing rice under phosphate deficiencyUntargeted LC-MS/MS metabolomics of root exudate collection solution from wild-type rice (Oryza sativa L. Zhonghua 11) and three independent overexpression lines (OE8, OE15, OE33) of the elephant grass (Pennisetum purpureum) phosphoenolpyruvate carboxylase gene PpPEPC1b, grown under low phosphate (5 uM KH2PO4) conditions for 40 days. Four groups with three biological replicates each, plus pooled QC samples. UPLC-MS/MS on a SCIEX TripleTOF 6600+ in positive and negative ESI modes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