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首页> 外文期刊>Applied Soil Ecology >Soil treatment-induced differential gene expression in tomato: Relationships between defense gene expression and soil microbial community composition
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Soil treatment-induced differential gene expression in tomato: Relationships between defense gene expression and soil microbial community composition

机译：土壤处理诱导的番茄差异基因表达：防御基因表达与土壤微生物群落组成的关系

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摘要

Soil management affects chemical and microbiological properties of soils in ways that impact plant growth. We examined effects of amendment treatments and contrasting management treatments on chemical and microbiological soil properties and on expression of selected defense genes in laboratory-grown tomatoes (Solanum lycopersicum). Treatments imposed on a conventionally managed Maury silt loam included: compost, manure, vetch (Vicia villosa), inorganic N, and non-treated control. Non-amended, organically managed Maury soil, collected from the same location was also studied. Compost, manure, and vetch increased total organic C (TOC) and permanganate oxidizable C (POXC) in soil. Organically managed soil also had greater TOC and POXC than the control treatment. Soil N was increased bycompost, manure, vetch and inorganic N treatment. Microbial communities from compost, vetch and manure treatments differed from each other and from communities in the other treatments. Defense genes: ChiB (chitinase), Osm (osmotin), and GluA (beta-1,3-glucanase) were generally expressed less in plants from manure treated soil and organically managed soil. The PR1b (pathogenesis-related protein PR1b) gene was expressed more in plants from compost, inorganic N, and vetch treatments. Defense gene expression was negatively related to Gram-negative bacterial biomarkers, which were greatest in manure treated soil and organically managed soil. These results suggest that increased relative abundance of Gram-negative members of soil microbial communities in manure treated or organically managed soils may indirectly reduce the steady state expression of defense genes in plants, allowing plants to shift resources from defense to other beneficial functions such as fruit or biomass production. (C) 2015 Elsevier B.V. All rights reserved.
机译：土壤管理以影响植物生长的方式影响土壤的化学和微生物特性。我们研究了改良处理和对比处理对化学和微生物土壤特性以及实验室种植的番茄（茄属番茄）中所选防御基因表达的影响。对常规管理的莫里粉质壤土进行的处理包括：堆肥，肥料，紫v（野豌豆），无机氮和未经处理的对照。还研究了从同一地点收集的未经修正的有机管理的莫里土壤。堆肥，肥料和野豌豆增加了土壤中的总有机碳（TOC）和高锰酸盐可氧化碳（POXC）。有机处理的土壤也具有比对照处理更高的TOC和POXC。通过堆肥，粪肥，紫etch和无​​机氮处理增加了土壤氮素。堆肥，v子和粪便处理产生的微生物群落彼此不同，其他处理产生的微生物群落也不同。防御基因：在粪肥处理过的土壤和有机处理过的土壤中，植物中的ChiB（几丁质酶），Osm（渗透素）和GluA（β-1,3-葡聚糖酶）表达较少。 PR1b（与病程相关的蛋白PR1b）基因在堆肥，无机氮和紫etch处理中在植物中表达更多。防御基因的表达与革兰氏阴性细菌生物标志物负相关，在粪肥处理的土壤和有机处理的土壤中最大。这些结果表明，在经过粪肥处理或有机处理的土壤中，土壤微生物群落的革兰氏阴性成员相对丰度可能会间接降低植物中防御基因的稳态表达，从而使植物将资源从防御转移到其他有益功能（如水果）上或生物质生产。 （C）2015 Elsevier B.V.保留所有权利。

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