Reichert Júnior Francisco Wilson, Scariot Maurício Albertoni, Forte César Tiago, Pandolfi Leonardo, Dil Jaqueline Mara, Weirich Sabrina, Carezia Carine, Mulinari Jéssica, Mazutti Marcio Antônio, Fongaro Gislaine, Galon Leandro, Treichel Helen, Mossi Altemir José
Center for Agricultural Sciences, Federal University of Santa Catarina, Admar Gonzaga Highway, Itacorubi, Florianópolis, Brazil.
Graduate Program in Plant Science, Federal University of Rio Grande do Sul, Bento Gonçalves Avenue, Porto Alegre, Brazil.
Heliyon. 2019 May 11;5(5):e01676. doi: 10.1016/j.heliyon.2019.e01676. eCollection 2019 May.
The prospection of bioherbicides has been an alternative to weed control, aiming at mitigating chemical risks to human, animal and environmental health due to extreme use of synthetic herbicides. In the present study, various fungi were isolated from plants with symptoms of fungal diseases for bioherbicide purposes against weeds (, and ). Fungi isolated were identified by molecular methods and enzymatic products obtained by fungi fermentation (cellulase, lipase, peroxidase, and amylase) were quantified. Bioherbicide selectivity study was performed on crops (soybean and corn), as well as on resistant weeds. Among the isolated fungi, , and presented bioherbicide potential. , in particular, presented the highest effect on (popular name - Mexican fire plant), causing up to 60% of foliar damage, without presenting phytotoxicity against corn crop. New perspectives for weeds control and their use in corn crops were prospected, considering the bioherbicide selectivity described in this study.
生物除草剂的开发一直是杂草防治的一种替代方法,旨在减轻由于过度使用合成除草剂而对人类、动物和环境健康造成的化学风险。在本研究中,从患有真菌病害症状的植物中分离出各种真菌,用于制备针对杂草的生物除草剂(、和)。通过分子方法对分离出的真菌进行鉴定,并对真菌发酵产生的酶产物(纤维素酶、脂肪酶、过氧化物酶和淀粉酶)进行定量。在作物(大豆和玉米)以及抗性杂草上进行了生物除草剂选择性研究。在分离出的真菌中,、和具有生物除草剂潜力。特别是对(俗名——墨西哥火草)表现出最高的防治效果,造成高达60%的叶片损伤,且对玉米作物无植物毒性。考虑到本研究中描述的生物除草剂选择性,展望了杂草防治及其在玉米作物中的应用的新前景。