Table I.

Transcript levels of MtCCD1 in extracts of nonmycorrhizal and mycorrhizal wild-type roots after 7 or 9 weeks of fungal colonization by G. intraradices as determined by real time RT-PCR from three biological replicates

For comparison, additional data were obtained from a gene involved in early steps of apocarotenoid biosynthesis (MtDXS2-1) and from an arbuscule molecular marker gene (MtPT4).

TimeGeneEΔCt × 10−3
NonmycorrhizalMycorrhizal
7 weeksMtCCD128.0 ± 7.841.7 ± 14.6
MtDXS2-17.6 ± 3.116.3 ± 4.0
MtPT40.02 ± 0.005273.3 ± 94.5
9 weeksMtCCD120.7 ± 6.862.3 ± 21.5
MtDXS2-14.4 ± 1.732.3 ± 5.1
MtPT40.03 ± 0.01825.3 ± 386.9