Abstract
We have recently found that, in Arabidopsis, reactive oxygen species levels and flowering negatively correlate with linolenic acid composition of plant lipids (LAC). Here we report that this correlation is the case for boreal conifers. To investigate whether LAC negatively correlates with floral determination in the trees, we monthly harvested the needles from Larix gmelinii, L. kaempferi, Picea glehnii and Abies sachalinensis grown some tree species grown in the field of Hokkaido Forestry Research Institute. Larix LAC in June negatively correlated with corn production, while that in July positively correlated. Abies LAC was higher than that of L. gmelinii and kaempferi and negatively correlated in May, Jun, July. Picea LAC was constantly lower than the tree species and positively correlated with corn production. Based on these results and the fact that one linolenic acid derivatives induces flowering, we will discuss the role of linolenic acid in flowering regulation.
