Changes in the Metabolism of Soybean Plants Submitted to Herbicide Application in Different Weed Management Systems

IF 0.8 Q3 Agricultural and Biological Sciences

Planta Daninha Pub Date : 2020-01-01 DOI:10.1590/s0100-83582020380100043

D. S. Fraga, D. Agostinetto, Q. Ruchel, A. Langaro, C. Oliveira

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引用次数: 0

Abstract

ABSTRACT: Technologies that advocate the use of herbicide-resistant crops are alternatives to weed control, but they may cause oxidative stress and change secondary metabolism of plants. Therefore, this study aimed to evaluate changes in the secondary metabolism of soybean plants which contained Cultivance® (CV), sulfonylurea-tolerant soybean (STS) and Roundup Ready® (RR) technologies submitted to the application of the mixture of herbicides imazapyr and imazapic in “plant-apply” and “apply-plant” management systems. Two field experiments, in which soybean cultivars were submitted to increasing doses of the mixture of herbicides imazapyr and imazapic, were performed. Aerial parts of plants were collected 10 days after crop emergence and stored at -83oC, until quantification of variables. In general, the soybean cultivar BRS382CV exhibited lower contents of chlorophyll than cultivars CD249STS and NA5909RR. Besides, increasing doses of the mixture of herbicides imazapyr and imazapic decreased contents of chlorophyll in the cultivars. Stress caused by herbicides induced more generation of ROS and effective response of the antioxidant system through enzymes SOD, CAT and APX.

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不同杂草管理制度下施用除草剂大豆植株代谢的变化

摘要/ ABSTRACT摘要:抗除草剂作物是杂草防治的替代技术，但抗除草剂作物可能引起植物氧化应激，改变植物次生代谢。因此，本研究旨在评价含有栽培®(CV)、耐磺脲大豆(STS)和抗农达®(RR)技术的大豆植株在“植物-施用”和“施用-植物”管理系统中施用除草剂imazapyr和imazapic后的二次代谢变化。在两个大田试验中，对大豆品种进行了增加剂量的混合除草剂imazapyr和imazapic。作物出苗后10天采集植株地上部分，保存在-83℃，直到变量量化。总体而言，大豆品种BRS382CV的叶绿素含量低于品种CD249STS和NA5909RR。此外，增加除草剂伊马扎吡和伊马扎吡的混合用量会降低品种的叶绿素含量。除草剂胁迫诱导活性氧产生增多，抗氧化系统通过SOD、CAT和APX酶有效响应。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Planta Daninha Agricultural and Biological Sciences-Plant Science

自引率

0.00%

发文量

审稿时长

16 weeks

期刊介绍： Planta Daninha is a scientific journal published by the Brazilian Society of Weed Science (SBCPD - Sociedade Brasileira da Ciência das Plantas Daninhas). Papers submitted for publication must be sent through an electronic system, on http://www.scielo.br/pd. Works may be written in Portuguese, English, or Spanish, and will be accepted after being reviewed and approved by the Editorial Board. Only papers that have not been published or submitted for publication in other media will be accepted. Articles in Portuguese will be translated to English after being properly corrected and authorized by the authors. Planta Daninha has with goal to publish genuine technical-scientific papers and literature reviews from a critical perspective on Biology, weed management, and related topics.