17. アサガオのストレス応答花成におけるサリチル酸の関与

概要

論文の詳細を見る
Stresses are one of the environmental factors which induce flowering as photoperiod and temperature are. Although Pharbitis nil is a short-day plant, it flowers under long-days responding to stresses such as low temperature, poor nutrition and high irradiance. We found that metabolic pathway producing benzoic acid is involved in the stress-responding flowering in P. nil, and suggested that salicylic acid may be the compound which actually induces flowering. Here, we examined the involvement of salicylic acid. When P. nil, Violet was cultivated in tap water for 20 days, flowering was induced under long-days. This poor nutrient stress-responding flowering was inhibited if aminooxyacetic acid (AOA) was added to tap water. This inhibition by AOA was reversed if t-cinnamic acid or benzoic acid was added together with AOA. These results are consistent with the previous results in the same experiments with low temperature. It suggests that the same metabolism is involved in the stress-responding flowering irrespective of the kind of stress factors. Further, the inhibition by AOA was reversed also by salicylic acid. Then, flower-inducing activity of salicylic acid was assayed in the culture with nutrient solution under long-days, a non-stress conditions. Salicylic acid did not induce flowering. These results together indicate that stresses may induce not only the synthesis of salicylic acid but also some other factors which are necessary for the flowering.
植物化学調節学会の論文
2005-10-13

17. アサガオのストレス応答花成におけるサリチル酸の関与

スポンサーリンク

概要

著者

関連論文

スポンサーリンク