1 Supplementary material 2 Journal: Metabolomics 3 4 Impact of induced drought stress on the metabolite 5 profiles of barley grain 6 7 Alexandra Wenzel1, Thomas Frank1, Gabriela Reichenberger2, Markus Herz2 and 8 Karl-Heinz Engel*1 9 1Technische 10 Universität München, 11 Lehrstuhl für Allgemeine Lebensmitteltechnologie, 12 Maximus-von-Imhof-Forum 2, D-85350 Freising-Weihenstephan, Germany 13 14 2Bavarian State Research Center for Agriculture (LfL), Institute for Crop Science and Plant Breeding, Am Gereuth 8, D-85354 Freising, Germany 15 16 17 * Author to whom correspondence should be addressed [Karl-Heinz Engel, 18 Technische Universität München, Lehrstuhl für Allgemeine Lebensmitteltechnologie, 19 Maximus-von-Imhof-Forum 20 Telephone: +49 (0) 8161 71 4250; Fax: +49 (0) 8161 71 4259; email: 21 k.h.engel@wzw.tum.de] 2, D-85350 22 1 Freising-Weihenstephan, Germany; 23 Supplementary Table S1 Analyzed spring barley genotypes and their 24 characteristics Barke IPZ 24727 Argentina Mutant 6519 Steina Streif Polygena Supplier Josef Breun GmbH & Co. KG, Herzogenaurach Germany Bavarian State Research Center for Agriculture (LfL), Germany Cerveceria y Malteria Quilmes, Argentina Josef Breun GmbH & Co. KG, Herzogenaurach Germany Origin Libelle x Alexis (1996) Maresi x Omega Streng-Engelen GmbH & Co.KG, Uffenheim, Germany Saatzucht Hadmersleben GmbH, Hadmersleben, Germany Pasadena x Aspen (2007) 46401-80 x 45465-78 (1994) 25 26 2 chemical-induced mutant of Quilmes Paine (1993) (Sultan x St.434/62) x (Voldagsen x Carlsberg x Volla) (1980) 27 Supplementary Table S2 Compounds identified in fraction I (major lipids) and 28 fraction II (minor lipids) no. compound identa saturated FAMEb 2 3 5 9 12 16 18 21 23 26 29 compound identa unsaturated FAMEb 12:0 14:0 15:0 16:0 17:0 18:0 19:0 20:0 21:0 22:0 23:0 A A A A A A D A A A D 7 8 11 15 20 25 28 30 6 13 19 31 24:0 A 14 35 26:0 37 28:0 D D 24 free fatty acidsc 1 12:0 2 14:0 3 15:0 5 16:1 (9E) 6 16:1 (9Z) 7 16:0 8 17:1 (9Z) 9 17:0 12 18:2 (9Z, 12Z) 13 18:3 (9Z, 12Z, 15Z) 14 18:1 (9Z) 15 18:0 17 20:2 (11Z, 14Z) 18 20:1 (11Z) 19 20:0 21 22:1 (13Z) 22 22:0 24 24:0 29 30 31 32 33 34 35 36 37 no. A A A C A A A A A A A A A A A A A A 16:1 (9E) 16:1 (9Z) 17:1 (9Z) 18:1 (9Z) 20:1 (11Z) 22:1 (11Z) 23:1 24:1 (15Z) 16:2 (9Z, 12Z) 18:2 (9Z, 12Z) 20:2 (11Z, 14Z) 18:3 (9Z, 12Z, 15Z) 22:2 (13Z,16Z) fatty alcoholsc 4 16:0 10 18:0 11 phytol 16 20:0 20 22:0 23 24:0 25 26:0 27 28:0 35 30:0 tocopherolsc 26 -tocopherol a Identification no. compound hydrocarbons D A A A A A D A B,D A A 1 4 10 17 22 27 32 33 34 36 37 C14 C18 C20 C22 C24 C26 C28 squalene cholestane C31 C32 A A A A A A A A A D D A D A A A A A C A D D B,C sterols/stanolsc 28 cholesterol 29 campesterol 30 campestanol 31 stigmasterol 32 β-sitosterol 33 sitostanol 34 5-avenasterol 36 gramisterol 37 cycloartenol 38 7-avenasterol 39 24-methylenecycloartenol 40 citrostadienol according to A mass spectral data and retention times of reference compounds B mass spectral data and retention index of Golm Metabolome Database (Kopka et al., 2005) C mass spectral data of NIST08 mass spectral library D mass spectral data E according to (Xu and Godber, 1999) F according to (Kamal-Eldin et al., 1992) b fatty acid methyl esters c TMS derivatives of respective compound 3 identa A A A A A A F F E F A F 38 Supplementary Table S3 TMS derivatives of compounds identified in fraction III 39 (sugars and sugar alcohols) and fraction IV (acids, amino 40 41 acids and amines) no. 42 43 44 45 46 47 48 a b compounda identb fraction sugars III and sugar alcohols 1,2 arabinose ad 3 xylitol 4,5,6 fructose 7,9 galactose 8,12 glucose 10 mannitol 11 sorbitol myo-inositol 13 14 sucrose 15,16 maltose 17 galactinol 18 raffinose A A A A A A A A A A A A ## acids lactic acid 1 lactic acid 3 pyruvic acid A 6 benzoic acid 9 phosphoric acid 13 maleic acid 14 succinic acid 15 glyceric acid 16 fumaric acid 19 glutaric acid 22 malic acid 27 threonic acid α-ketoglutaric acid 30 33 3-glycerophosphoric acid 34 cis-aconitic acid 36 2-glycerophosphoric acid 38 citric acid 39 isocitric acid A A A A A A A A A A A A A A A A C compounda identb amino acids and amines 2 alanine 4 α-aminobutyric acid 5 valine 7 ethanolamine 8 leucine 10 proline 11 isoleucine 12 glycine 17 serine 18 threonine β-alanine 20 21 homoserine 23 pyroglutamic acid 24 -aminobutyric acid 25 aspartic acid 26 cysteine 28 phenylalanine 29 glutamic acid 31 asparagine 32 putrescine 35 glutamine 37 ornithine 40 lysine 41 tyrosine 42 tryptophan A A A A A A A A A A A A A A A D A A A A B,D A A A A no. Metabolites identified as persilylated derivates Identification according to A mass spectral data and retention times of reference compound B mass spectral data and retention index of Golm Metabolome Database (Kopka et al., 2005) C NIST08 mass spectral library D mass spectral data 49 50 4 51 Captions 52 53 54 55 56 57 58 59 60 61 62 Supplementary Fig. S1 63 64 Supplementary Fig. S3 65 66 67 Rain-Out-Shelter (ROS) Supplementary Fig. S2 Soil moisture content (,,) and irrigation/natural rainfall (bars) under drought stress in a Rain-Out-Shelter (a) and under natural weather conditions at control location 1 (b) in growing seasons 2010 (, black bars), 2011(, grey bars) and 2012(, broken bars) Hours of sun recorded at Munich airport (approximately 0.5 kilometres from C1/ROS and C2) during growing seasons 2010, 2011 and 2012. Graphics provided on http://weather-online.de (23 June 2014) 5 68 Supplementary Fig. S1 69 70 6 10-May 10.5 17-May 17.5 24-May 24.5 31-May 31.5 * * 7-Jun 7.6 14-Jun 14.6 21-Jun 21.6 28-Jun 28.6 5-Jul 5.7 12-Jul 12.7 19-Jul 19.7 26-Jul 26.7 25 20 15 10 5 0 60 50 40 30 20 10 0 irrigation [mm] rainfall [mm] 0 3.5 -100 3-May a 26.4 -200 26-Apr -300 19.4 -400 19-Apr -500 12.4 -600 12-Apr -700 5.4 -800 -900 5-Apr * continuing data irrigation 20102010 Bewässerung irrigation 20112011 Bewässerung irrigation 20122012 Bewässerung soil moisture tension 2010 2010 soil moisture tension 2011 2011 soil moisture tension 2012 2012 rainfall 2010 2010 Niederschlag rainfall 2011 2011 Niederschlag rainfall 2012 2012 Niederschlag soil moisture tension 2012 2012 soil moisture tension 2011 2011 soil moisture tension 2010 2010 7 b 0 -100 -200 -300 -400 -500 -600 -700 -800 -900 29.3 a data of tensiometer obtained in 60 cm soil depth not available due to technical problems 29-Mar soil moisture tension [mbar]a soil moisture tension [mbar]a 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 Supplementary Fig. S2 71 Supplementary Fig. S3 122 123 124 16 March – 31 August 2010 sun hours per day 121 125 126 127 128 129 sun hours per day 16 March – 31 August 2011 130 131 132 133 134 sun hours per day 16 March – 31 August 2012 135 8