Tepper H B, Yang R L
State University of New York, Department of Environmental and Forest Biology, Syracuse, NY 13210, USA.
Bot Acta. 1996 Dec;109(6):502-5. doi: 10.1111/j.1438-8677.1996.tb00603.x.
Portions of the shoot system from young light-grown pea (Pisum sativum L.) seedlings were excised and circumnutation studied using time-lapse cinematography. Removal of the youngest leaf or shoot tip as well as ringing the stem with 20 mM triiodobenzoic acid severely restricted circumnutation. Treating the stump of the excised leaf with lanolin containing 10(-4) M indole-3-acetic acid or replacing the leaf with an artificial aluminum leaf both partially restored circumnutation. When the leaf was replaced with both auxin and an artificial leaf circumnutation continued at approximately the rate of the intact plant. This graphically shows the involvement of both auxin and gravitropism in circumnutation.
从幼嫩的、在光照下生长的豌豆（Pisum sativum L.）幼苗上切下部分茎系统，利用延时摄影技术研究其回旋转头运动。去除最幼嫩的叶片或茎尖，以及用20 mM三碘苯甲酸环割茎干，都会严重限制回旋转头运动。用含有10⁻⁴ M吲哚-3-乙酸的羊毛脂处理切除叶片的残端，或用人工铝叶替换叶片，均可部分恢复回旋转头运动。当同时用生长素和人工叶片替换叶片时，回旋转头运动以与完整植株大致相同的速率继续。这直观地表明了生长素和向重力性在回旋转头运动中的作用。
