Anthocyanin accumulation and related gene expression in Japanese parsley (Oenanthe stolonifera, DC.) induced by low temperature

Post-stress metabolism involves umbelliferone production in anthocyanin-producing and non-producing cells of Glehnia littoralis suspension cultures

“…It was therefore presumed that PAL and CHS might behave in a coordinate manner, as suggested by the observations that PAL and CHS seemed to be expressed coordinately in Japanese parsley along with accumulating anthocyanin, both at 12 and 25 1C (Hasegawa et al, 2001), and are suppressed together by the addition of 2,4-D in anthocyaninproducing carrot cells (Ozeki et al, 1987). On this basis, we considered the possibility that in Violet cells, one of the isoforms of PAL might behave coordinately with CHS, whilst another PAL isoform (at least one) might behave independently.…”

The Upregulation of NtAN2 Expression at Low Temperature is Required for Anthocyanin Accumulation in Juvenile Leaves of Lc-transgenic Tobacco (Nicotiana tabacum L.)

“…The NtDFR expression was unaffected by low temperature in Lc-transgenic tobacco (Fig. 3E), which was different from the induction expression by cold treatment in maize (Christie et al, 1994), parsley (Hasegawa et al, 2001), and red orange fruit (Lo Piero et al, 2005). But anthocyanin accumulation was only observed in juvenile leaves of Lc-transgenic lines at low temperature.…”

Photoprotective implications of leaf variegation in E. dens-canis L. and P. officinalis L.

“…This indicates that, in the case of E. dens-canis, anthocyanins did not increase photoprotection as has been found in red portions of variegated Coleus (Burger and Edwards, 1996) and in other nonvariegated species where red leaves exhibited higher levels of chronic photoinhibition than green leaves Williams et al, 2003). Because the induction of anthocyanin synthesis has been described in plant tissues subjected to different stress conditions (Chalker-Scott, 1999;Hasegawa et al, 2001;Steyn et al, 2002;Beadle, 2003, 2005;Manetas, 2006), we hypothesize that the presence of these compounds in the more photosensitive cells could be the result of an induction of photoprotective compounds. This would mean that the accumulation of red anthocyanins in this species, more than a preventive strategy, is the consequence of a higher susceptibility to photoinhibition.…”