List of all studies
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Study NameDescription#Phenotypes
Mejion201 different accessions of A. thaliana from different geographic origins. These accessions were part of the RegMap. Seeds were obtained by growing the parental generation of all lines used side by side in the same growth chambers under the same conditions. The seeds were surface sterilized in 2.8% hypochlorite for 4 min and washed three times in MonoQ sterile water. They were then stratified for 72 h at 4 °C in water and darkness and put to grow on our custom Confocal Chamber System (CCs). The seeds were grown for 3 d in vertically oriented CCs containing 1× Murashige and Skoog (MS) salt mixture, 1% (wt/vol) sucrose and 0.8% (wt/vol) agar. To provide a sterile environment for the CCs and prevent them from drying out, we embedded the CCs into conventional agar plates 2
Ion ConcentrationPlants were grown in a controlled environment with 10 h light/ 14 h dark (90 mmol m22s21 photosynthetically active light) and 19 to 22uC, as previously described [31]. Briefly, seeds were sown onto moist soil (Promix; Premier Horticulture) in 10.506210 20 row trays with various elements added to the soil at subtoxic concentrations (As, Cd, Co, Li, Ni, Rb, and Se [31]) and the tray placed at 4uC for 3 days to stratify the seeds and help synchronize germination. Each tray contained 108 plants, six plants each from 18 accessions, with three plants of each accession planted in two different parts of the tray. Each tray contained four common accessions (Col-0, Cvi-0, Fab-2 and Ts-1) used as controls, and 14 test accessions. Trays were bottom-watered twice per week with 0.25-strength Hoagland solution in which Fe was replaced with 10 mM Fe-HBED[N,N9-di(2-hydroxybenzyl)ethyle- nediamine-N,N9-diacetic acid monohydrochloride hydrate; Strem Chemicals, Inc.). After 5 weeks plants were non-destructively sampled by removing one or two leaves and the elemental composition of the tissue analyzed by Inductively Couple Plasma Mass Spectroscopy (ICP-MS). The plant material was rinsed with 18 MV water and placed into Pyrex digestion tubes.19
Flowering time in simulated seasonsTwo independent experiments were conducted in this study. Experiment 1 was done with a mapping population of 360 accessions (33), and Experiment 2 used a set of 473 accessions. Each accession in each experiment had four replicates under each of the four growth conditions (two planting seasons by two locations). Both experiments were conducted in two walk-in growth chambers (AR-916, Percival Scientific) that were programmed to cycle the local climates every 5 min from the simulated weather files. The simulated climates were generated by using SolarCalc (35) with sunrise and sunset, light spectrum, temperature, and relative humidity programmed to cycle throughout the day and the season according to 1975?2000 averages (Fig. S5). One chamber was simulating Spain (latitude 41.72091, longitude 2.957075) starting from March 1, and the other chamber was simulating Sweden (latitude 55.71226, longitude 13.207352) starting from May 1st on the first day when plants were put into the chambers.34
DAARGWAS of three mass features of N-malonyl-D-allo-isoleucine in Arabidopsis thaliana inbred lines using ~250k SNPs in 416 accessions3
Atwell et. al, Nature 2010GWAS of 107 phenotypes in Arabidopsis thaliana inbred lines using ~250k SNPs in 199 accessions107
1001genomes flowering time phenotypesStudy of flowering time at 16°C (FT16) and flowering time at 10°C (FT10) that where phenotype for the 1001genomes project.2