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Mabea fistulifera and Zeyheria tuberculosa can be indicated for phytoremediation programs of soils contaminated with hormonal herbicides.

Gabriela Madureira BarrosoMariana Generoso FerreiraEdson Aparecido Dos SantosEvander Alves FerreiraMiranda TitonPietra Vena Soares XavierDayana Maria Teodoro FrancinoJosé Barbosa Dos Santos
Published in: International journal of phytoremediation (2021)
Hormone-like herbicides, used for large crops, can contaminate non-target areas with their waste. The objective of this study was to evaluate the tolerance of Mabea fistulifera and Zeyheria tuberculosa to 2,4-D + picloram herbicides by means of morphological and anatomical evaluations. The experiment was performed in a greenhouse in a 4 × 2 factorial scheme. The first factor was the control (without herbicide) and three doses (0.166; 0.333, and 0.666 L ha-1) of the herbicide Tordon® (402 g L-1 2,4-D + 103.6 g L-1 picloram) and the second factor, the species Mabea fistulifera and Zeyheria tuberculosa. The number of M. fistulifera leaves was lower after treatment with the highest dose of the 2,4-D + picloram mixture. The herbicide rates did not influence the number of Z. tuberculosa leaves. The higher dose of 2,4-D + picloram caused a more than 50% reduction in leaf area. Toxicity increased linearly as a function of the doses of the 2,4-D + picloram mixture. Changes in the leaf anatomy of the two species treated with herbicides were observed; however, the roots did not show any changes. Mabea fistulifera and Zeyheria tuberculosa can be recommended for phytoremediation programs in areas contaminated by the herbicides 2,4-D + picloram.
Keyphrases
  • heavy metals
  • public health
  • drinking water
  • risk assessment
  • oxidative stress
  • metabolic syndrome
  • type diabetes
  • municipal solid waste
  • polycystic ovary syndrome
  • genetic diversity
  • oxide nanoparticles