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首页> 外文期刊>Journal of soil science and plant nutrition >Endophytic selenobacteria and arbuscular mycorrhizal fungus for Selenium biofortification and Gaeumannomyces graminis biocontrol
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Endophytic selenobacteria and arbuscular mycorrhizal fungus for Selenium biofortification and Gaeumannomyces graminis biocontrol

机译：内生的硒细菌和丛枝菌根真菌用于硒的生物强化和葛缕子的生物防治

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Abstract: Selenium (Se) is an important antioxidant considered among the fertilization programs in developed countries. In Chile, chemical fertilization based in Se is inefficient due the physicochemical characteristics of Andisol that sustain the 60% of crop production. Andisol also are highly conductive to take-all disease caused by Gaeumannonyces graminis var tritici (Ggt). Here, we evaluated the effect of Bacillus sp.E5 and Acinetobacter sp.E6.2 and Claroideoglomus claroideum as potential inocula for Se biofortification and Ggt bicontrol in wheat. Plants inoculated with Acinetobacter sp.E6.2 showed major root growth and major Se content in shoots and grains. The antioxidant role of Se regarding DPPH activity was shown in Se-supplemented plants with small Se nanoparticles founded inside the roots. Mycorrhizal plants showed major SOD activity in shoots but no affected the Se uptake. Respect to pathogen biocontrol, plants inoculated with both bacteria showed an efficient control against Ggt independent to mycorrhization. Thus, our inocula could make important contributions to produce enriched Se flours for human nutrition and biocontrol against Ggt.
机译：摘要：硒（Se）是发达国家施肥计划中考虑的重要抗氧化剂。在智利，由于Andisol的物理化学特性可维持60％的农作物产量，因此以Se为基础的化学肥料效率低下。 Andisol还具有极强的导电性，可促进由小麦灰霉菌（Ggt）引起的全食性疾病。在这里，我们评估了芽孢杆菌E5和不动杆菌E6.2和克罗氏杆菌作为小麦生物富硒和Ggt双控的潜在接种物。用不动杆菌E6.2接种的植物在茎和谷粒中显示出主要的根系生长和主要的Se含量。硒对补充DPPH活性的抗氧化作用已在补充硒的植物中显示，其根部内有小的硒纳米颗粒。菌根植物在芽中显示出主要的SOD活性，但不影响硒的吸收。关于病原体的生物防治，接种了两种细菌的​​植物均显示出有效的对Ggt的控制，而这种控制独立于菌根。因此，我们的接种物可为生产用于人类营养和抗Ggt生物控制的富硒面粉做出重要贡献。

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