Inter- and intraspecific plant-soil feedbacks of grass species
Inter- and intraspecific plant-soil feedbacks of grass species
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DOI：
10.1007/s11104-023-05893-z
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发表时间：
2023-02-06
期刊：
影响因子：
4.9
通讯作者：
van der Putten，Wim H.
中科院分区：
文献类型：
--
作者：
Rallo，Paola;Hannula，S. Emilia;van der Putten，Wim H.
背景和目的植物与土壤微生物群持续相互作用。这些植物-土壤反馈（PSFs）被认为是植物群落动态的驱动力。然而，大多数PSF信息来自家族间研究，关于可能原因的信息有限。我们研究了草种之间和草种内的变化，并确定了土壤微生物与观察到的PSFs effects.MethodsWe增长的三个草种（多年生黑麦草，草地早熟禾，Schedonorus arundinaceus）的10个品种的单一栽培，使用两个阶段的PSF实验。我们测量植物总生物量，以确定物种之间和物种内的PSF和相关的根际细菌和真菌的测序。ResultsIn土壤调理阶段，草种开发的微生物遗产，影响其他草种的性能在反馈阶段。我们检测到整体负种间PSF。当我们展示L. perenneandP.在同种和异种土壤中，S. arundinaceus并没有受到先前植物物种遗产的强烈影响。与我们的预期相反，我们没有发现PSFs种内变异的证据。与PSF相关的细菌类群包括成员ofProteobacteria，Firmicutes，VerrucomicrobiaandPlanctomycetes而真菌类群包括成员ofAscomycota.ConclusionOur结果表明，PSF的影响草种之间的差异，但不是品种之间的物种。因此，在所研究的草种中，可能有有限的潜力，通过PSFs介导的植物性状育种。此外，我们指出了可能驱动观察到的PSF效应的潜在微生物候选物，可以进一步探索。
Background and aimsPlants continuously interact with soil microbiota. These plant-soil feedbacks (PSFs) are considered a driving force in plant community dynamics. However, most PSF information comes from inter-family studies, with limited information on possible causes. We studied the variation of PSFs between and within grass species and identified the soil microbes that are associated with the observed PSFs effects.MethodsWe grew monocultures of ten cultivars of three grass species (Lolium perenne,Poa pratensis,Schedonorus arundinaceus) using a two-phase PSF experiment. We measured plant total biomass to determine PSFs between and within species and correlated it with sequenced rhizosphere bacteria and fungi.ResultsIn the soil conditioning phase, grass species developed microbial legacies that affected the performance of other grass species in the feedback phase. We detected overall negative interspecific PSFs. While we show thatL. perenneandP. pratensisincreased their performance respectively in conspecific and heterospecific soils,S. arundinaceuswas not strongly affected by the legacies of the previous plant species. Contrary to our expectation, we found no evidence for intraspecific variation in PSFs. Bacterial taxa associated with PSFs included members ofProteobacteria,Firmicutes,VerrucomicrobiaandPlanctomyceteswhereas fungal taxa included members ofAscomycota.ConclusionOur results suggest differences in PSF effects between grass species, but not between cultivars within species. Thus, in the studied grass species, there might be limited potential for breeding on plant traits mediated by PSFs. Furthermore, we point out potential microbial candidates that might be driving the observed PSF effects that could be further explored.