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Herbicidal Activity of the Metabolite SPRI-70014 from Streptomyces griseolus

Published online by Cambridge University Press:  20 January 2017

Wenping Xu ,
Liming Tao ,
Xuebin Gu ,
Xiaoxia Shen  and
Sheng Yuan
Wenping Xu
Affiliation:
Jiangsu Engineering and Technology Research Center for Industrialization of Microbial Resources, Jiangsu Key Laboratory for Biodiversity and Biotechnology, College of Life Science, Nanjing Normal University, 1 Wenyuan Road, Nanjing 210046, People's Republic of China
Liming Tao
Affiliation:
Shanghai Pesticide Research Institute, Shanghai 200032, People's Republic of China
Xuebin Gu
Affiliation:
Shanghai Pesticide Research Institute, Shanghai 200032, People's Republic of China
Xiaoxia Shen
Affiliation:
Shanghai Pesticide Research Institute, Shanghai 200032, People's Republic of China
Sheng Yuan*
Affiliation:
College of Life Science, Nanjing Normal University, Nanjing 210046, People's Republic of China
*
Corresponding author's E-mail: [email protected]
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Abstract

Microbial metabolites have been identified as a promising class of natural herbicides due to their effective control against weeds and a relatively low environmental impact. Here we report on the potency and crop safety of a natural compound with herbicidal properties, the metabolite SPRI-70014 from Streptomyces griseolus CGMCC 1370. The compound showed excellent herbicidal activities on various broadleaf and gramineous weeds in both greenhouse and field trials. In germination inhibition experiments, SPRI-70014 inhibited the emergence of both root and shoot at 1 mg L−1. At a dose of 31.3 g ai ha−1, SPRI-70014 provided effective control over most broadleaf weeds in greenhouse trials. Observations on absorption and translocation using a cucumber plant model system indicated that SPRI-70014 could be absorbed by the root but only partly by the stem. Field trials showed that SPRI-70014 provided effective control over most weed species tested at a dose of 1,000 g ai ha−1. Crop safety experiments showed that the compound had no harmful effect on peanut or wheat plants at doses up to 2,000 g ai ha−1. These results indicated that this compound could be developed as a potential POST herbicide for control of broadleaf weeds in peanut and wheat fields.

Keywords

Cucumber, Cucumis sativus L.peanut, Arachis hypogaea L.wheat, Triticum aestivum L.Mycotoxinsnatural products
Type
Weed Management
Information
Weed Science , Volume 57 , Issue 5 , October 2009 , pp. 547 - 553
Copyright
Copyright © Weed Science Society of America 

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