SciELO journals
Browse
1/1
7 files

Pouteria torta: a native species of the Brazilian Cerrado as a bioindicator of glyphosate action

Download all (2.2 MB)
dataset
posted on 2018-05-09, 05:44 authored by P. F. Batista, A. C. Costa, C. A. Megguer, J. S. Lima, F. B. Silva, D. S. Guimarães, G. M. Almeida, K. J. T. Nascimento

Abstract In Brazil, the expansion of agricultural activity and the associated indiscriminate use of herbicides such as glyphosate is directly related to the loss of biodiversity in the Cerrado. The identification of plant species as bioindicators of herbicide action, especially species native to the area, can help in monitoring the impacts of xenobiotics in the remaining Cerrado. Thus, this study was designed to evaluate the possible use of the native Cerrado species Pouteria torta as a bioindicator of glyphosate action via changes in physiological performance. At 16 months after sowing, the effect of glyphosate was evaluated by applying the following doses: 0 (control), 25, 50, 100, 200, 400, 800, and 1200 g a.e. ha-1. In response to glyphosate, P. torta exhibited reductions in photosynthesis and chloroplastid pigment content, as well as accumulation of shikimic acid and the occurrence of chlorosis and necrosis. These changes demonstrate the high sensitivity of P. torta to glyphosate and its potential for use as a bioindicator of this herbicide.

History

Usage metrics

    Brazilian Journal of Biology

    Licence

    Exports

    RefWorks
    BibTeX
    Ref. manager
    Endnote
    DataCite
    NLM
    DC