所选除草剂对嗜麦芽窄食单胞菌（Sb16）生长和固氮活性的影响

Effects of Selected Herbicides on Growth and Nitrogen Fixing Activity of Stenotrophomonas maltophilia (Sb16).

作者信息

Nahi Armita, Othman Radziah, Omar Dzolkhifli, Ebrahimi Mahdi

机构信息

Department of Land Management, Faculty of Agriculture, Universiti Putra Malaysia, Selangor, Malaysia.

Department of Land Management, Faculty of Agriculture, Universiti Putra Malaysia, Selangor, Malaysia; Institute of Tropical Agriculture, Universiti Putra Malaysia, Selangor, Malaysia.

出版信息

Pol J Microbiol. 2016 Aug 26;65(3):377-382. doi: 10.5604/17331331.1215618.

DOI:10.5604/17331331.1215618

PMID:29334074

Abstract

A study was carried out to determine the effects of paraquat, pretilachlor and 2, 4-D on growth and nitrogen fixing activity of Stenotrophomonas maltophilia (Sb16) and pH of Jensen's N-free medium. The growth of Sb16 and pH of medium were significantly reduced with full (X) and double (2X) doses of tested herbicides, but nitrogen fixing activity was decreased by 2X doses. The nitrogenase activity had the highest value in samples treated with 1/2X of 2, 4-D on fifth incubation day, but 2X of 2, 4-D had the most adverse effect. An inhibition in the growth and nitrogenase activity was recovered on the last days of incubation.

摘要

开展了一项研究，以确定百草枯、丙草胺和2,4-滴对嗜麦芽窄食单胞菌（Sb16）生长、固氮活性以及詹森无氮培养基pH值的影响。使用全剂量（X）和双倍剂量（2X）的受试除草剂时，Sb16的生长和培养基pH值显著降低，但固氮活性在2X剂量下降低。在用1/2X的2,4-滴处理的样品中，固氮酶活性在培养的第五天最高，但2X的2,4-滴产生的不利影响最大。在培养的最后几天，生长和固氮酶活性的抑制作用得到恢复。