Flowering and expression of flowering-related genes under long-day conditions with light-emitting diodes
Flowering and expression of flowering-related genes under long-day conditions with light-emitting diodes
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DOI：
10.1007/s00425-011-1397-9
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发表时间：
2011-08-01
期刊：
影响因子：
4.3
通讯作者：
Kanayama, Yoshinori
中科院分区：
文献类型：
--
作者：
Hori, Yoshimi;Nishidate, Koji;Kanayama, Yoshinori
在长日照条件下，利用发光二极管（LED）研究了光质对长日照切花满天星（Gypsophila paniculata）和拟南芥开花时间的影响。满天星植物在自然日光下生长，并且通过在夜间用单色弱LED光进行长日照处理来控制开花。蓝光对G.而在拟南芥中，两种浅色都促进了开花。FT同源物G.在白色长日照条件下，Paniculata GpFT 1和GpFT 2的表达量存在差异，表明它们在生殖发育的不同阶段对开花起作用。远红光不能诱导G. paniculata或Arabidopsis。相反，G. Paniculata GpSOC 1和SOC 1的远红光诱导。paniculata和Arabidopsis。蓝光诱导拟南芥的FT和SOC 1表达促进开花，而蓝光诱导G.圆锥花序。拟南芥中FT和SOC1的表达与开花之间的关系通过ft和soc1突变体得到证实。这些结果表明，长日照条件下，远红光促进开花通过SOC 1及其同源物，而蓝光条件下不促进开花G。与拟南芥相比，GpFTs和GpSOC1的表达量较低。
The effects of light quality on flowering time were investigated in Gypsophila paniculata, which is a long-day cut flower, and with Arabidopsis under long-day conditions with light-emitting diodes (LEDs). Gypsophila paniculata plants were grown under natural daylight and flowering was controlled by long-day treatment with a weak LED light of a single color in the night. Flowering was promoted not by blue light, but by far-red light in G. paniculata, while flowering was promoted by both light colors in Arabidopsis. FT homologs of G. paniculata GpFT1 and GpFT2 were differentially expressed under long-day conditions with white light, suggesting that they play roles in flowering at different stages of reproductive development. GpFTs and FT gene expression was not induced by far-red light in G. paniculata or Arabidopsis. Instead, the expression of the SOC1 homolog of G. paniculata GpSOC1 and SOC1 was induced by far-red light in G. paniculata and Arabidopsis. Flowering was promoted by induction of FT and SOC1 expression with blue light in Arabidopsis, whereas GpFTs and GpSOC1 expression was low with blue light induction in G. paniculata. The relationship between flowering and the expression of FT and SOC1 in Arabidopsis was confirmed with ft and soc1 mutants. These results suggest that long-day conditions with far-red light promote flowering through SOC1 and its homologs, while the conditions with blue light do not promote flowering in G. paniculata, because of low expression of GpFTs and GpSOC1 in contrast to that in Arabidopsis.