{"id":1499,"date":"2022-01-10T10:00:35","date_gmt":"2022-01-10T13:00:35","guid":{"rendered":"http:\/\/pressreleases.scielo.org\/en\/?p=1499"},"modified":"2023-03-28T13:38:27","modified_gmt":"2023-03-28T16:38:27","slug":"study-points-out-microorganisms-activating-in-the-remediation-of-soil-degraded-by-agrochemistics","status":"publish","type":"post","link":"https:\/\/pressreleases.scielo.org\/en\/2022\/01\/10\/study-points-out-microorganisms-activating-in-the-remediation-of-soil-degraded-by-agrochemistics\/","title":{"rendered":"Study points out microorganisms activating in the remediation of soil degraded by agrochemistics"},"content":{"rendered":"

Maria Luiza De Grandi, journalist of Ci\u00eancia Rural. Santa Maria, Rio Grande do Sul, Brazil. <\/strong><\/p>\n

Adriano Jakelaitis, Professor at Instituto Federal Goiano, Campus Rio Verde. Rio Verde, Goi\u00e1s, Brasil.<\/strong><\/p>\n

\"\"<\/a>The use of agrochemicals such as herbicides results in environmental impacts on the soil. Thus, it is increasingly necessary that sustainable technologies be used to reduce contaminants. An example of a widely used agrochemical is hexazinone, an herbicide from the chemical group of triazinones, used in sugarcane cultivation (TONIETO & REGINATO, 2014). In order to select hexazinone-tolerant microorganisms that have phosphate solubilization capacity and prepare inoculants associated with the plant in the remediation of soil contaminated with hexazinone, researchers from Instituto Federal Goiano (IF Goiano) developed the research Selection of microorganisms and preparation of inoculants with potential application in the remediation of soil contaminated with hexazinone<\/a>. The article was published in the Ci\u00eancia Rural (vol. 51, n\u00ba 6).<\/p>\n

The researchers collected twenty soil samples, at a depth of ten centimeters, in a location with a history of application of the herbicide hexazinone, in Rio Verde, Goi\u00e1s, Brazil. The samples were homogenized to obtain a composite sample. The microorganisms were isolated by serial dilution, seeded in 1 g of soil and diluted in nine mL of saline solution (0.85%). Through the research, soil microorganisms tolerant to the herbicide hexazinone, which is widely used in Brazil in the cultivation of sugarcane, were selected. The selected isolates that showed tolerance were identified using the PCR technique as: Microbacterium arborescens<\/em>; Bacillus pumilus<\/em>; Stenotrophomonas maltophilia<\/em>; Bacillus cereus<\/em>; and Bacillus saphensis<\/em>. Another feature evaluated for selection was the ability to solubilize phosphates, which allows the availability of phosphorus, an essential macronutrient for plants, a factor that can benefit their growth, a trait evidenced by the isolates B. pumilus and S. maltophilia.<\/p>\n

\"\"

Imagem: Adriano Jakelaitis.<\/em><\/p><\/div>\n

According to Adriano Jakelaitis, one of the scientists who worked on the research, the characteristics of these isolates could be a sustainable alternative for bioremediation of soil contaminated with hexazinone. Bioremediation is a sustainable technique, as it uses living organisms to recover environments contaminated by recalcitrant substances. \u201cSuch an alternative can help to improve the quality of the soil, as well as providing nutrients for plants, helping their growth\u201d, he explains.<\/p>\n

The research stands out because of the increased demand for food and the growing consumption of herbicides to improve productivity, the soil and water can be affected by the excess of agrochemicals. \u201cThis technique can help to mitigate the negative impacts caused by the use of the herbicide hexazinone, and encourage the expansion of research and sustainable alternatives for the recovery of contaminated soils\u201d, adds the researcher.<\/p>\n

References<\/h3>\n

TONIETO, T. and REGINATO, J. Effects of straw decomposition degree on leaching and weed control efficacy of tebuthiuron and hexazinone in green sugarcane harvesting. Planta Daninha <\/em>[online]. 2014, vol. 32, no. 4, pp. 808-815 [viewed 4 January 2022]. https:\/\/doi.org\/10.1590\/S0100-83582014000400016<\/a>. Available from: https:\/\/www.scielo.br\/j\/pd\/a\/tYk3SnZFL9XBK3L68xpvRDr\/?lang=en<\/a><\/p>\n

To read the article, access<\/h3>\n

SANTOS, V.S., et al<\/em>. Selection of microorganisms and preparation of inoculants with potential applications in the remediation of soil contaminated with hexazinone. Ci\u00eancia Rural <\/em>[online]. 2021, vol. 51, vol. 6, e20200263 [viewed 4 January 2022]. https:\/\/doi.org\/10.1590\/0103-8478cr20200263<\/a>. Available from: https:\/\/www.scielo.br\/j\/cr\/a\/NKf9wYDFwVN9SVFC6Rhkb5w\/?lang=en<\/a><\/p>\n

Link(s)<\/h3>\n

Ci\u00eancia Rural: http:\/\/coral.ufsm.br\/ccr\/cienciarural\/<\/a><\/p>\n

Ci\u00eancia Rural – SciELO: https:\/\/www.scielo.br\/j\/cr\/<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"

Herbicides such as hexazinone are widely used in crops around the world. With the objective of selecting hexazinone-tolerant microorganisms that have the capacity to solubilize phosphate and prepare inoculants associated with the plant in the remediation of soil contaminated with hexazinone, researchers carried out a research based on 20 soil samples. The results present an alternative to help improve soil quality. …<\/span> Read More →<\/span><\/a><\/span><\/p>\n","protected":false},"author":106,"featured_media":1500,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"footnotes":"","_links_to":"","_links_to_target":""},"categories":[3,20,12],"tags":[192,21],"class_list":["post-1499","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-agricultural-sciences","category-cr","category-press-releases","tag-agronomy","tag-ciencia-rural"],"aioseo_notices":[],"aioseo_head":"\n\t\t\n\t\n\t\n\t\n\t\n\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t