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Enantioselectivity and allelopathy both have effects on the inhibition of napropamide on Echinochloa crus-galli

Xie, Jingqian and Tang, Wei and Zhao, Lu and Liu, Shuren and Liu, Kai and Liu, Weiping (2019) Enantioselectivity and allelopathy both have effects on the inhibition of napropamide on Echinochloa crus-galli. Science of the Total Environment, 682 . pp. 151-159. ISSN 0048-9697. http://resolver.caltech.edu/CaltechAUTHORS:20190507-133453989

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Abstract

Napropamide is a chiral acetamide herbicide commonly applied to control Echinochloa crus-galli in maize. The inhibition effect may be enantioselective for Echinochloa crus-galli and maize. It may also be affected by the potential allelopathy at field condition. To investigate this, we have examined the inhibition effect of napropamide on Echinochloa crus-galli mono-cultured or co-cultured with maize at field conditions. Our results on morphology, physiology, chlorophyll content and chlorophyll fluorescence suggest that R-napropamide has stronger inhibitory effect than Rac-napropamide and S-napropamide on Echinochloa crus-galli, while none of them affects maize. We found that both glutathione-S-transferase (GST) genes and oxidative enzymes (superoxide dismutase, malondialdehyde) played roles in the inhibition. Accumulations of napropamide in Echinochloa crus-galli were more prominent in roots than in shoots, and no enantioselectivity was found in medium dissipation. We have observed relative allelopathy when applying napropamide to Echinochloa crus-galli co-cultured with maize. The results warrant further field studies on the enantioselectivity and allelopathy of herbicides.


Item Type:Article
Related URLs:
URLURL TypeDescription
https://doi.org/10.1016/j.scitotenv.2019.05.058DOIArticle
ORCID:
AuthorORCID
Liu, Kai0000-0002-2109-8196
Liu, Weiping0000-0002-1173-892X
Additional Information:© 2019 Published by Elsevier. Received 18 February 2019, Revised 5 May 2019, Accepted 5 May 2019, Available online 7 May 2019. The authors acknowledge financial supports from the National Natural Science Foundation of China (41806126, 21427815 and 213320102007), a special funding for the development of science and technology of Shanghai Ocean University (A2-0203-00-100227), and Doctoral Scientific Research Foundation of Shanghai Ocean University (A2-0203-00-100351).
Funders:
Funding AgencyGrant Number
National Natural Science Foundation of China41806126
National Natural Science Foundation of China21427815
National Natural Science Foundation of China213320102007
Shanghai Ocean UniversityA2-0203-00-100227
Shanghai Ocean UniversityA2-0203-00-100351
Subject Keywords:Napropamide; Echinochloa crus-galli; Environmentally realistic conditions; Relative allelopathy; Enantioselectivity
Record Number:CaltechAUTHORS:20190507-133453989
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:20190507-133453989
Official Citation:Jingqian Xie, Wei Tang, Lu Zhao, Shuren Liu, Kai Liu, Weiping Liu, Enantioselectivity and allelopathy both have effects on the inhibition of napropamide on Echinochloa crus-galli, Science of The Total Environment, Volume 682, 2019, Pages 151-159, ISSN 0048-9697, https://doi.org/10.1016/j.scitotenv.2019.05.058. (http://www.sciencedirect.com/science/article/pii/S0048969719320704)
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:95306
Collection:CaltechAUTHORS
Deposited By: George Porter
Deposited On:07 May 2019 20:53
Last Modified:23 May 2019 17:29

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