青霉素促进蚕豆气孔张开的作用

PROMOTION EFFECT OF PENICILLIN ON STOMATAL OPENING OF VICIA FABA L.

用青霉素溶液处理蚕豆(Vicia faba L.)下表皮,当青霉素的浓度为10^(-4)到1ppm时,青霉素具有玉米素的作用,促进气孔张开;当青霉素的浓度超过1ppm时,则抑制气孔张开。青霉素和玉米素混合处理,对蚕豆气孔的张开具有加成作用。青霉素有拮抗ABA对气孔张开的抑制作用。2,4—DNP和ATP对青霉素促进气孔张开的实验表明,青霉素可能通过促进磷酸化作用,增强保卫细胞中ATP的含量,促进气孔张开。

This paper introduces that epidermal peels from the abaxial surface of Vicia faba L. are treated with penicillin solution. When its concentration is 10^(-4) to 1ppm, the penicillin has zeatin effects and promotes stomatal opening, but when its concentration is larger than 1ppm, it inhibits stomatal opening. The effects of penicillin and zeatin are additive in the stomatal opening of Vicia faba L. On the other hand, penicillin could have the antagonistic action on the inhibitive effect of ABA in the stomatal opening. The promotion experiments of 2, 4 -DNP and ATP on stomatal opening by penicillin show that penicillin could increase ATP contents in guard cell and promote stomatal opening through promotion of phosphorylation.