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Sample Set Information

Title Metabolic profiling of flavonoids in Lotus japonicus
Description Metabolic profiling of flavonoids in leaf, stem, flower of Lotus japonicus Miyakojima MG-20 and Gifu B-129.
Authors Hideyuki Suzuki 1, Ryosuke Sasaki 1, Yoshiyuki Ogata 1, Yukiko Nakamura 2 4, Nozomu Sakurai 1, Mariko Kitajima 3, Hiromitsu Takayama 3, Shigehiko Kanaya 2, Koh Aoki 1, Daisuke Shibata 1, Kazuki Saito 3, 1: Kazusa DNA Research Institute, 2: Nara Institute of Science and Technology, 3: hiba University, 4: Ehime Women’s College
Reference Phytochemistry, 2008, 69(1), 99-111
Comment Seed coats of L. japonicus were scratched by glass paper and fed water for 1 d. The seedlings were transferred to a mixture of vermiculite and a commercial soil, Powersoil (mix ratio 1.3–1, Kureha Chemical Ind., Tokyo, Japan, and Kanto Hiryou Ind., Saitama, Japan), and grown for 90–120 days (from March to June) in 2005, in a greenhouse under natural sunlight. From 7-day-old plants, cotyledons and hypocotyls were collected separately and served as leaf and stem samples, respectively. From 14-, 21-, 30-, 60, and 90-day-old plants, leaves and stems were collected. The tissues for one experimental replicate were collected from 12 independent plants for 7-, 14-, and 21-day-old stages, or from one independent plant for 30-, 60-, and 90-day-old stages.

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The web resources and information related to the species used in this study are available at Plant Genome Database Japan (PGDBj).

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Analytical Method Details Information

Title LC-FT-ICR-MS ESI positive method 1
Instrument Agilent1100 HPLC (Agilent), LTQ-FT (Thermo Fisher Scientific)
Instrument Type LC-FTICR-MS
Ionization ESI
Ion Mode Positive
Description Harvested sample is frozen by liquid N2 and resulting powder (100mg) are solved in 300uL 80% methanol solution. 20uL sample is injected into HPLC after 0.2um membrane filter treatment. HPLC conditions: Agilent 1100 series (Agilent), Column: TSKgel-100V (4.6 x 250 mm, 5 micrometer; TOSOH), Solvent: A; 0.1% formic acid aq. B; ACN (addition 0.1% formic acid fc.), Gradient: (B);3 to 42% (0.0 to 45.0 min), 42 to 95% (45.0 to 45.1 min), 95% (45.1 to 50.0 min), 3% (50.1 to 57.0 min), Column temp.: 30 degree C, Flow rate=0.5mL/min, PDA: 200-650 nm (2 nm step). FT-ICR-MS conditions: Filter 1: FTMS + p norm !corona !pi o(200.0-1500.0);2: ITMS + p norm !corona !pi Dep MS/MS Most intense ion from (1). Rejected mass=249.00;266.00;271.50;294.00;391.00;609.00;810.50;1101.50;1105.50;1123.50;1139.50.
Comment_of_details MTLC0307

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