除草剂氟乐灵对三叶草根瘤共生体系建立的抑制作用。

Inhibitory effects of the herbicide trifluralin on the establishment of the clover root nodule symbiosis.

作者信息

De Rosa F, Haber D, Williams C, Margulis L

出版信息

Cytobios. 1978;21(81):37-43.

Abstract

Trifluralin, a widely used herbicide (Rahman, 1977), may act via interaction with plant microtubule protein (Hess and Bayer, 1974, 1977). In trifluralin treated seedlings of Trifolium repens, root tips increased in diameter and decreased in length, cell elongation was decreased, cell wall deposition was abnormal, root hairs were deformed, and a marked reduction was seen in the number of infection threads induced by the bacterial symbionts. Our observations support the hypothesis that trifluralin (at low concentrations, from 2 x 10(-6) M) interferes with microtubule-based morphogenetic processes in developing seedlings and adversely affects the establishment of the bacteria-legume symbiosis.

摘要

氟乐灵是一种广泛使用的除草剂（拉赫曼，1977年），可能通过与植物微管蛋白相互作用发挥作用（赫斯和拜尔，1974年、1977年）。在经氟乐灵处理的白三叶草幼苗中，根尖直径增加而长度减小，细胞伸长减少，细胞壁沉积异常，根毛变形，并且由细菌共生体诱导的感染丝数量显著减少。我们的观察结果支持这样的假说，即氟乐灵（低浓度，2×10⁻⁶ M）干扰发育中幼苗基于微管的形态发生过程，并对细菌 - 豆科植物共生关系的建立产生不利影响。