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Mechanism of plant-soil feedback in a degraded alpine grassland on the Tibetan Plateau

Journal of plant Ecology 2024年第2期17卷 188-199页

作者： Tiancai Zhou Jian Sun Peili Shi Key Laboratory of Ecosystem Network Observation and Modelling Institute of Geographic Sciences and Natural Resources ResearchChinese Academy of SciencesBeijing 100101China State Key Laboratory of Tibetan Plateau Earth System Resources and EnvironmentInstitute of Tibetan Plateau ResearchChinese Academy of SciencesBeijing 100101China Key Laboratory of Biodiversity and Environment on the Qinghai-Tibet Plateau Ministry of EducationLhasa 850011China Tibet Research Academy of Eco-environmental Sciences Lhasa 850000China College of Resources and Environment University of Chinese Academy of SciencesBeijing 100049China

Although biotic and abiotic factors have been confirmed to be critical factors that affect community dynamics,their interactive effects have yet to be fully considered in grassland ***,we tested how soil nutrients and microbes regulated plant-soil feedback(PSF)in a degraded alpine *** results indicated that soil total carbon(STC;from 17.66 to 12.55 g/kg)and total nitrogen(STN;from 3.16 to 2.74 g/kg)exhibited significant(Psoil generating significantly(Psoil was sterilized,a high proportion of pathogens(36%)in ND non-sterilized soil resulted in a strong negative PSF on *** contrast,the higher phenotypic plasticity of dicots coupled with a higher abundance of mutualists and saprophytes(70%)strongly promoted their survival and growth in SD with infertile *** findings identified a novel mechanism that there was a functional group shift from monocots with higher vulnerability to soil pathogens in the ND fertile soil to dicots with higher dependence on nutritional mutualists in the degraded infertile *** emerging irreversible eco-evolutionary in PSF after degradation might cause a predicament for the restoration of degraded grassland.

关键词： plant-soil feedback plant function groups degradation alpine grassland Tibetan Plateau

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Invasive grasses consistently create similar plant-soil feedback types in soils collected from geographically distant locations

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Journal of plant Ecology 2016年第2期9卷 180-186页

作者： Lora B.Perkins Gary Hatfield Erin K.Espeland Department of Natural Resource Management South Dakota State University1 N.Campus Dr.BrookingsSD 57007USA Department of Mathematics and Statistics South Dakota State University100 Admin LaneBrookingsSD 57007USA Pest Management Research Unit USDA-ARS NPARL1500 North Central AveSidneyMT 59270USA

Aims plants of similar life forms and closely related species have been observed to create similar types of plant–soil feedbacks(PSFs).However,investigations of the consistency of PSFs within species have not yielded clear *** example,it has been reported that species create different types of PSFs in their native and introduced *** aim of this project is to examine if four species create similar PSF types from soils collected from widely distributed areas within their introduced *** soil for this project was collected from three areas in western North *** this design,we aim to determine species-and site-specific ability to create PSFs and if the type of PSF created is consistent in all soil from all three collection *** species examined are Agropyron cristatum,Centaurea solstitialis,Poa pratensis and Taeniatherum *** We used three-field collected soils(from northern Nevada,western Montana and eastern Montana)in a two-phase greenhouse experiment to quantify the type of PSFs created by four invasive *** first phase was a conditioning phase wherein each invasive species created species-specific changes to the *** second phase of the experiment was the response phase wherein both the conditioning species and a native phytometer were grown in the conditioned soil and in unconditioned(control)*** final aboveground biomass was used to evaluate the effect of conditioning and to determine the type of PSF created by each invasive *** Findings Our results suggest that three of our four study species did show consistency in relation to *** species *** and *** consistently created PSF types that benefit conspecifics more than heterospecifics(and thus are‘invasive’PSF types)and *** consistently exhibited no,or‘neutral’,*** fourth species(***)was inconsistent:in one soil,no feedback was created;in other soil,an invasive PSF was created and in t

关键词： plant-soil feedback invasion niche construction

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soil legacy effects and plant-soil feedback contribution to secondary succession processes

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soil Ecology Letters 2023年第2期5卷 117-125页

作者： Qing Qu Hongwei Xu Guobin Liu Sha Xue State Key Laboratory of soil Erosion and Dryland Farming on Loess Plateau Institute of Soil and Water ConservationChinese Academy of Sciences and Ministry of Water ResourcesYangling 712100China Institute of soil and Water Conservation Northwest A&F UniversityYangling 712100China University of Chinese Academy of Sciences Beijing 100049China

Secondary succession is the process by which a community develops into a climax community over ***,knowledge on the mechanisms,relating to soil legacy effects(soil chemistry and enzyme activity)and plant-soil feedback(PSF),driving community succession remains *** this work,we examined the PSF associated with three succession stage species through a 2-year greenhouse *** viridis,Stipa bungeana,and Bothriochloa ischemum were selected to represent dominant and representative early-,mid-,and late-successional stage species,respectively,of semiarid grasslands on the Loess *** response to the different soil origin,the shoot biomass of early-,mid-,and late-species were all higher when grown in their own soil than in other species’soils,which indicated that the PSF of three species were *** two growth periods,the early-species experienced a negative PSF,but the mid-and late-species experienced negative,neutral and positive PSF in the soil of early-,mid-and late-species,*** study demonstrates that soil legacy effects and PSF have a significant impact on community succession processes.

关键词： Grassland plant growth plant-soil feedback soil microbial activity soil legacy effects Secondary succession

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Journal of plant Ecology 2021年第1期14卷 33-43页

作者： Xuefei Tang Chunqiang Wei Lunlun Gao Bingbing Jia Xinmin Lu School of Life Sciences Central China Normal UniversityHubei 430079China State Key Laboratory of Agricultural Microbiology Huazhong Agricultural UniversityHubei 430070China Institute of Invasion Biology Agriculture&Ecological SafetyHuazhong Agricultural UniversityHubei 430070China Department of plant Protection College of Plant Sciences&TechnologyHuazhong Agricultural UniversityHubei 430070China

Aims soil biota can affect plant-plant interactions and non-native plant invasions via plant-soil feedback(PSF).Understanding the drivers underlying interspecific variations in PSF is im portant for predicting the role of soil biota in non-native plant *** studies found that PSF could be predicted by plant *** success of plant invasions is also linked with plant traits,suggesting a potential linkage between PSF and plant invasion via plant traits,but has not yet been ***,we compared PSF between six phylogenetically paired co-occurring native and invasive plants,and explored the potential linkage between PSF with plant root *** We conducted a two-phase PSF *** collected soils were conditioned by the six plant species for 3 months firstly,then seedllings of these plants were grown in living or sterilized soils that had been conditioned by conspecific ***(the conge ner/confamilial species)*** estimated effects of biota in conspecific(conspecific PSF)or heterospecific(heterospecific PSF)soils relative to sterilized soils,and the relative effects of biota in conspecific *** soils(PSF-away)on plant *** Findings In general,soil biota suppressed plant growth,and there were no differences in conspecific PSF,heterospecific PSF and PSF-away between native and invasive *** increased with rising plant fineto-total root mass ratio in the presence of soil biota,and its value was comparable between native and invasive *** results indicate that similarity in plant fine-to-total root mass ratio that predicted PSF may have partially led to the comparable PSFs between these native and invasive *** exploring the linkages among plant traits,PSF and plant invasions with more plants,in particular phylogenetically distant plants,are needed to improve our understanding of the role of soil biota in plant invasions.

关键词： functional traits invasive plants plant invasions plant-soil feedback phylogenetic-paired species

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A comprehensive review on coupled processes and mechanisms of soil-vegetation-hydrology, and recent research advances

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Science China Earth Sciences 2022年第11期65卷 2083-2114页

作者： Zhongkai LI Xiaoyan LI Sha ZHOU Xiaofan YANG Yongshuo FU Chiyuan MIAO Shuai WANG Guanghui ZHANG Xiuchen WU Chao YANG Yuanhong DENG State Key Laboratory of Earth Surface Processes and Resource Ecology Faculty of Geographical ScienceBeijing Normal UniversityBeijing 100875China School of Natural Resources Faculty of Geographical ScienceBeijing Normal UniversityBeijing 100875China Academy of Plateau Science and Sustainability Qinghai Normal UniversityXining 810016China School of Geographical Sciences Qinghai Normal UniversityXining 810016China College of Water Sciences Beijing Normal UniversityBeijing 100875China

Research on the coupling of soil,vegetation,and hydrological processes is not only a research hotspot in disciplines such as pedology,ecohydrology and Earth system science but also important for achieving sustainable ***,scientists from different disciplines usually study the coupling mechanism of soil-vegetation-hydrological processes at very different space and time scales,and the mechanistic connections between different scales are quite *** article reviewed research advances in coupled soil-vegetation-hydrological processes at different spatial scales—from leaf stomata to watershed and regional scales—and summarized the spatial upscaling methods and modeling approaches of coupled soil-vegetationhydrological *** identify and summarize the following coupling processes:(1)carbon-water exchange in leaf stomata and root-soil interface;(2)changes in soil aggregates and profile hydraulic properties caused by plant roots and water movement;(3)precipitation and soil moisture redistribution by plant canopy and root;(4)interactions between vegetation patches and local hydrological process;(5)links between plant community succession and soil development;and(6)links between watershed/regional water budget and vegetation phenology and ***,the limitations and knowledge gaps in the observations,mechanisms,scaling methods,and modeling approaches of coupled soil-vegetation-hydrological processes were *** achieve a deep integration of various coupling processes across different spatiotemporal scales,future work should strengthen multiscale,multifactor and multiprocess soil-vegetation-hydrology coupling observations and mechanism studies,develop new scaling methods,identify different feedback pathways,and take time-variable plant behavior and soil hydraulic properties into account during modeling.

关键词： Ecohydrological process soil process plant-soil feedback Modeling approaches Scaling method

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No consistent legacy effects of invasion by giant goldenrod(Solidago gigantea)via soil biota on native plant growth

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Journal of plant Ecology 2016年第3期9卷 320-327页

作者： Jenifer König Mark van Kleunen Wayne Dawson Department of Biology University of KonstanzUniversitaetsstrasse 10Konstanz D78457Germany

Aims Changes in soil microbial communities after occupation by invasive alien plants can represent legacy effects of invasion that may limit recolonization and establishment of native plant species in soils previously occupied by the *** this study,for three sites in southern Germany,we investigated whether invasion by giant goldenrod(Solidago gigantea)leads to changes in soil biota that result in reduced growth of native plants compared with neighbouring uninvaded *** We grew four native plant species as a community and treated those plants with soil solutions from invaded or uninvaded soils that were sterilized,or live,with live solutions containing different fractions of the soil biota using a decreasing sieve mesh-size *** measured aboveground biomass of the plants in the communities after a 10-week growth *** FindingsAcross all three sites and regardless of invasion,communities treated withsoil biota or sterilized soil solutions had significantly greater biomass than communities treated with the complete soil biota *** indicates that soil biota>20μm are more pathogenic to the native plants than smaller organisms in these *** all three sites,there was only a non-significant tendency for the native community biomass to differ among soil solution types,depending on whether or not the soil was *** one site showed significant differences in community biomass among soil solution types,depending on whether or not the soil was invaded;community biomass was significantly lower when treated with the complete soil biota solution than with soil biotasoil solutions,but only for the invaded *** findings suggest that efforts to restore native communities on soils previously invaded by Solidago gigantea are unlikely to be hindered by changes in soil microbial community composition as a result of previous invasion.

关键词： exotic plants invasive plant impacts plant-soil feedback soil microbes

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An invading annual plant benefits less from soil biota and has reduced competitive power with a resident grass

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Journal of plant Ecology 2021年第5期14卷 945-958页

作者： Xi Luo Loralee Larios Carla D’Antonio Xiaohong Xu Hui Guo College of Resources and Environmental Sciences Nanjing Agricultural UniversityNanjingJiangsu 210095China Department of Botany and plant Sciences University of CaliforniaRiversideCA 92512USA Department of Ecology Evolutionand Marine BiologyUniversity of CaliforniaSanta BarbaraCA 93106USA Laboratory Center of Life Sciences College of Life SciencesNanjing Agricultural UniversityNanjing 210095China

Aims Interactions between plants and their soil biota,arbuscular mycorrhizal fungi(AMF)in particular,may play a vital role in the establishment and the range expansion of exotic plants in new ***,whether there are post-introduction shifts in dependence on AMF and how dependency interacts with competition remains poorly *** We conducted a common garden greenhouse experiment to examine how native(USA)and invasive(China)populations of the plant species plantago virginica,respond to soil biota,and whether these responses change in the presence of a *** Findings We found that while native populations consistently had a higher AMF colonization rate and benefited from AMF in both biomass and seed production,invasive populations received less benefit from AMF,and even showed reduced biomass with AMF in the presence of a *** low mycorrhizal dependency in invasive populations correlated with greater suppression by an indigenous competitor for the *** different responses of the invasive and native populations to AMF suggest that alteration of mycorrhizal dependency has occurred during the invasion of *** into *** findings suggest that this reduced dependency incurs a cost during interspecific competition.

关键词： invasion ecology invasive plant plant-soil feedback arbuscular mycorrhizal fungi competition plantago virginica

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