Effects of Temperature on the Pattern of Anthocyanin Accumulation in Seedlings of Polygonum cuspidatum |
| |
Authors: | Fumiyasu Yamaguchi Masayuki Nozue Hitoshi Yasuda Hiroyoshi Kubo |
| |
Institution: | (1) Department of Biology, Faculty of Science, Shinshu University, Matsumoto, 390–8621 Japan, JP |
| |
Abstract: | Polygonum cuspidatum seedling. Anthocyanin accumulated first in the lower part of hypocotyls and then the site of accumulation gradually extended
toward the upper part of hypocotyls when seedlings were irradiated with white light (WL) at 25 C. Etiolated seedlings accumulated
anthocyanin only in the upper parts (hook and cotyledons) when the seedlings were irradiated with WL at 5 C. De-etiolated
seedlings that had been pre-irradiated with WL for 1 day at 25 C accumulated anthocyanin both in upper and lower parts of
the seedlings when the seedlings were irradiated with WL at 5 C. Spectral sensitivity was dependent on the temperature during
irradiation. Red light (R), blue light (B), and near ultra-violet light (NUV) induced the accumulation of anthocyanin at 5
C but only NUV was effective in inducing the accumulation of anthocyanin at 25 C. Dichlorophenyl dimethylurea (DCMU) inhibited
WL-induced anthocyanin accumulation but did not NUV-induced anthocyanin accumulation at 25 C. However, sucrose promoted NUV
action at 25 C, indicating that photosynthesis can promote NUV-induced anthocyanin accumulation. Distribution of phytochrome
in etiolated seedlings, that was examined by spectrophotometry, was similar to the distribution of anthocyanin at 5 C. Furthermore,
phytochrome remained after 48 hr irradiation with WL at 5 C although phytochrome was rapidly degraded at 25 C.
Received 12 July 1999/ Accepted in revised form 24 December 1999 |
| |
Keywords: | : Anthocyanin Low temperature NUV light Phytochrome Polygonum cuspidatum Red light |
本文献已被 SpringerLink 等数据库收录! |
|