_A_SPv10T3Analysis-GCMS

Assay: ASPv10T3Analysis-GCMS Short Name: SPv10T3Analysis-GCMS Assay Class: WET Assay Type: GCMS Title: Analysis of SPv1.0 T3 plants Description: Analysis of pheromone content in T3 generation of SPv1.0 plants pISA Assay creation date: 2021-11-01 pISA Assay creator: ElenaMG Lab manager: DO Sample collection protocol: Leaf samples were collected at 4 weeks after transplant for young stage and at 7 weeks for adult stage (early flowering). Samples were collected between 4 and 6 pm, frozen in liquid nitrogen immediately after collection, and ground afterwards. Extraction protocol: 50mg of frozen, ground leaf samples were weighed in a 10mL headspace screw-cap vial and stabilized by adding 1mL of 5M CaCl2 and 150 μL of 500mM EDTA (pH = 7.5), after which they were sonicated for 5 minutes. Volatile compounds were captured by means of headspace solid phase microextraction (HS-SPME) with a 65 μm polydimethylsiloxane/divinylbenzene (PDMS/DVB) SPME fiber (Supelco, Bellefonte, PA, USA). Volatile extraction was performed automatically by means of a CombiPAL autosampler (CTC Analytics). Vials were first incubated at 80°C for 3 minutes with 500 rpm agitation. The fiber was then exposed to the headspace of the vial for 20 min under the same conditions of temperature and agitation. Desorption was performed at 250°C for 1 minute (splitless mode) in the injection port of a 6890N gas chromatograph coupled to a 5975B mass spectrometer (Agilent Technologies). After desorption, the fiber was cleaned in a SPME fiber conditioning station (CTC Analytics) at 250°C for 5 min under a helium flow. Chromatography protocol: Chromatography was performed on a DB5ms (60 m, 0.25 mm, 1 μm) capillary column (JandW) with helium as the carrier gas at a constant flow of 1.2mLxmin-1. The oven programming conditions were an initial temperature of 160°C for 2 min, 7°Cmin-1 ramp until 280°C, and a final hold at 280°C for 6 minutes to reduce the overall running time without losing resolution of the desired compounds Mass spectrometry protocol: Electron impact ionization (EI), 70 eV ionization energy, MS source temperature 230ºC, MS quadrupole temperature 150ºC, single quadrupole detector, m/z range 35-300. Phenodata: ../../phenodata20200416.txt Featuredata: Creation date: 2021-11-01 Extract ID: $extr Extraction Method: HS-SPME Date Extraction: 2018-11-09 Derivatization or Labelling: none Date Derivatization or Labelling: 2018-11-09 Derivatized or labeled Extract ID: $extrD Other Post Extraction Procedures: Storage: -80ºC Date GC-MS Run: 2018-11-28 GC Instrument: 6890N gas chromatograph (Agilent Technologies) GC Autosampler Model: CombiPAL autosampler (CTC Analytics) GC Column model: DB5ms (60m, 0.25 mm, 1um) capillary column (JandW) GC Column type: capillary column MS Scan polarity: positive MS Scan mz range: 35-300 MS Ion source: electron ionization (EI) Mass analyzer: quadrupole mass filter Operator: ElenaMG Notes: Data: https://doi.org/10.5281/zenodo.5810495_