FIG 1.

Patterns of T. pseudonana silicon transporter transcript expression under Si-replete conditions (42), deposited in NCBI's Gene Expression Omnibus and accessible through GEO Series accession number GSE37081, and Si-deplete conditions (Smith et al., submitted). The transcript levels were analyzed by probing microarrays with mRNA from Si-starved cultures (A) and an Si-replete synchronous culture (B). Each Affymetrix GeneChip whole-genome tiling array contained a total of 524,909 sense-strand probes (average, 16 probes per gene) and was probed with wild-type T. pseudonana cDNA. Bars indicate standard deviations from two microarrays on which an equivalent of 32 probes hybridized with cDNA from biological duplicates (42).