Plant defence inducers rapidly influence the diversity of bacterial communities in a potting mix
Plant defence inducers rapidly influence the diversity of bacterial communities in a potting mix
复制标题
DOI：
10.1016/j.apsoil.2014.06.011
复制
发表时间：
2014-12-01
影响因子：
4.8
通讯作者：
Schenk, Peer M.
中科院分区：
文献类型：
--
作者：
Carvalhais, Lilia C.;Dennis, Paul G.;Schenk, Peer M.
植物激素及其功能类似物在农业中用于防治植物疾病和害虫。这些化学品通常以芽为目标，但土壤在施用过程中不可避免地会受到一定剂量的影响。在这项研究中，我们使用16S rRNA基因扩增焦磷酸测序，以确定是否在盆栽混合（这里称为“模式土壤”）的细菌群落的多样性受到影响，暴露于水杨酸（SA），茉莉酸甲酯（MeJA），乙烯（ET）和脱落酸（阿坝）。与每个样品相关的操作分类单位（OTU丰富度）和辛普森多样性指数值（均匀度）的数量不受激素治疗的影响，但观察到群落组成的变化。与对照组相比，所有激素都使Limnobacter种群的丰度增加了一倍以上，阿坝导致Cellvibrio种群的四倍增加，ET导致c. 70%的减少Algoriphagus人口，和MeJA和阿坝的应用程序减半的Massilia人口的丰度。这些变化可能会影响植物的生产力。(C)2014爱思唯尔有限公司版权所有。
Plant hormones and their functional analogues are used in agriculture to combat plant diseases and pests. These chemicals are generally targeted at shoots, but soils inevitably receive a dose during application. In this study, we used 16S rRNA gene amplicon pyrosequencing to determine whether the diversity of bacterial communities in a potting mix (referred here as 'model soil') is influenced by exposure to salicylic acid (SA), methyl jasmonate (MeJA), ethylene (ET) and abscisic acid (ABA). The number of operational taxonomic units (OTUs; richness) and Simpson's Diversity Index values (evenness) associated with each sample was not influenced by the hormone treatments, but changes in community composition were observed. Relative to the control, all hormones more than doubled the abundance of a Limnobacter population, ABA led to a four-fold increase in a Cellvibrio population, ET led to a c. 70% decrease in an Algoriphagus population, and MeJA and ABA applications halved the abundance of a Massilia population. These changes may influence plant productivity. (C) 2014 Elsevier B.V. All rights reserved.