43 ペプチド性植物増殖因子Phytosulfokineの夜間高温条件下でのシロイヌナズナ実生の生長とクロロフィル含量に対する影響

概要

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Phytosulfokines (PSKs) are the first chemically characterized peptidyl growth factors of higher plant. In order to investigate the function of PSK-α in plants, we examined the effect of Phytosulfokine-α(PSK-α) on the growth and chlorophyll content of Arabidopsis seedlings under high night temperature conditions. Although treatment with high night temperatures remarkably reduced the fresh weight and chlorophyll content in the seedlings, the plants supplied with PSK-α remained at the same levels as non-treated controls. These effects were not observed with the supply of [2-5]PSK, Tyr-SO_3H and kinetin. These results suggest that PSK-α not only promotes cell proliferation, but may aid plants in the toleration of heat stress.
植物化学調節学会の論文
1999-10-01