纳米单晶石种子处理及防治番茄黄单胞菌病的研究。gardneri

IF 1.2 4区 农林科学 Q2 AGRICULTURE, MULTIDISCIPLINARY Ciencia E Agrotecnologia Pub Date : 2023-04-14 DOI:10.1590/1413-7054202347000623
Natália Silva Oliveira, A. Silva, N. D. Tebaldi
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引用次数: 1

摘要

黄单胞菌(Xanthomonas spp., X. euvesicatoria)引起的细菌性斑疹。euvesicatoria, X. euvesicatoria pv。刺孔菌和蜂状菌pv。garneri)可能会给番茄作物造成重大损失。硅孔石纳米颗粒(SK-NPs)已被认为是植物病害防治的新途径。本研究的目的是评价SK-NPs(不同浓度的ZnOCl、ZnOCl:Ag和ZnOCl:Cu)对蜂毒弧菌的体外抑制作用。Gardneri,确定产品暴露时间导致细菌死亡;降低接种种子的细菌回收率及其降低植物细菌斑严重程度的效果。通过测定培养皿中抑菌带的直径,以抑菌带的大小评价其对生长的抑制作用。产品暴露于细菌悬浮液的时间分别为1、2、3、4或5小时。接种的番茄种子用SK-NPs处理。在植物试验中,分别在接种前2 d和接种后2 d施用该制剂,评价其防治效果。评估疾病严重程度,计算疾病进展曲线下面积(AUDPC)。ZnOCl:Ag、ZnOCl:Cu和ZnOCl均对细菌生长有抑制作用,且暴露时间为5 h即可抑制细菌生长。ZnOCl:Ag和ZnOCl:Cu降低了种子中细菌的存在,但不影响种子的萌发。两种产品在预防应用中都降低了AUDPC。利用SK-NPs ZnOCl:Ag和ZnOCl:Cu对番茄细菌性斑斑病有较好的治理效果。
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Simonkolleite nanoparticles for seed treatment and control of tomato bacterial spot caused by Xanthomonas hortorum pv. gardneri
ABSTRACT Bacterial spot caused by Xanthomonas spp. (X. vesicatoria, X. euvesicatoria pv. euvesicatoria, X. euvesicatoria pv. perforans, and X. hortorum pv. gardneri) may result in significant losses for tomato crops. Simonkolleite nanoparticles (SK-NPs) has been indicated as a novel approach for plant disease control. The objective of this work was to evaluate SK-NPs (ZnOCl, ZnOCl:Ag, and ZnOCl:Cu at different concentrations) for the in vitro inhibition of X. hortorum pv. gardneri, determining the time of exposure of the products for the bacterial death; the reduction of bacteria recovery on inoculated seeds, and their efficacy to reduce bacterial spot severity in plant. The growth inhibition was evaluated by inhibition zone in culture medium plates, when the diameter of the inhibition zone was measured. The period of exposure of the products to the bacterial suspension tested were 1, 2, 3, 4, or 5 h. Tomato inoculated seeds were treated with SK-NPs. In plant, the preventive and curative effects were evaluated by applying the products two days before or after inoculation, respectively. Disease severity was evaluated and the area under the disease progress curve (AUDPC) was calculated. ZnOCl:Ag, ZnOCl:Cu, and ZnOCl inhibited bacterial growth, and the 5 h exposure time was necessary to reduce bacterial growth. ZnOCl:Ag, and ZnOCl:Cu reduced the bacteria presence in the seeds, and did not affect the seed germination. Both products reduced the AUDPC in the preventive application. The use of SK-NPs ZnOCl:Ag and ZnOCl:Cu showed to be promising to manage tomato bacterial spot.
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来源期刊
Ciencia E Agrotecnologia
Ciencia E Agrotecnologia 农林科学-农业综合
CiteScore
2.30
自引率
9.10%
发文量
19
审稿时长
6-12 weeks
期刊介绍: A Ciência e Agrotecnologia, editada a cada 2 meses pela Editora da Universidade Federal de Lavras (UFLA), publica artigos científicos de interesse agropecuário elaborados por membros da comunidade científica nacional e internacional. A revista é distribuída em âmbito nacional e internacional para bibliotecas de Faculdades, Universidades e Instituições de Pesquisa.
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