植物生长潜力而非系统发育关系预测荒废农田土壤生物对外来和本土植物的作用

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中文摘要：植物能够调控土壤生物群落,而后者将对后期发生的植物适合度和群落结构产生显著影响.长期种植的单一农作物能够显著调控土壤生物群落,而新近荒废农田中土壤生物如何调控外来和本土杂草定植目前还不清楚,这严重束缚了农田杂草治理能力的提升.本研究采集新近荒废的玉米地表层土壤,选取58种华中地区常见农田杂草(28种外来和30种本土植物)为对象开展实验.通过将植物种植于伽马射线灭菌或未灭菌土壤,定量评价了土壤生物对植物地上、地下和总生物量的影响,探讨了实验物种-玉米系统发育距离和土壤效应是否相关,探究了能够预测土壤效应的关键植物性状.结果发现:(ⅰ)总体而言,土壤生物显著抑制实验植物生长,表明土壤拮抗生物(如病原菌等)发挥主导作用;(ⅱ)伴随植物生长潜力提升,土壤生物对植物的抑制作用逐渐增强,而土壤生物对实验植物的调控作用与实验物种-玉米系统发育距离无关;(ⅲ)相对于本土植物,外来植物(尤其多年生物种)被土壤生物抑制的程度更高.这些结果表明,植物生长潜力能够有效预测土壤生物对植物生长的调控作用,而且新近荒废农田土壤生物具有抵御外来植物入侵的潜力.

外文标题：Plant growth ability,rather than phylogenetic relatedness,predicts the effect of soil biota from an abandoned field on native and exotic plants

外文摘要：Soil biota,as legacy effects of previous species in natural ecosystems,profoundly affects plant performance in new habitats and,in turn,plant community.However,how soil biota,as legacy effects of agricultural crops,affects the likelihood of establishment of exotic and native plants in newly abandoned farmland remains poorly understood,which may hinder effective management of agricultural weeds.Here,we grew 58 plant species(28 exotic species and 30 native species)common in Central China in sterilized vs.nonsterilized soils collected from a newly abandoned maize field.We(ⅰ)estimated the effects of soil biota on plant shoot,root and total mass,(ⅱ)explored the dependence of soil effects on the plants'phylogenetic distance to maize,origin(native vs.exotic)and life history(annual vs.perennial)and(ⅲ)tested which plant traits could predict soil effects.Soil biota,in general,decreased plant mass,suggesting a dominant role of enemies.The effect of the soil biota on plant total mass was unrelated to the phylogenetic distance of the plants to maize and decreased linearly with increasing plant intrinsic growth ability.Moreover,the soil biota on average had greater negative impacts on the total mass of exotic plants,particularly perennial species,than on that of native plants.Our results suggest that plant intrinsic growth ability,rather than phylogenetic relatedness,is a reliable predictor of soil effects.Additionally,native plants can benefit from plant-soil interactions in competing with exotic perennial plants when initially established in newly abandoned farmlands.

外文关键词：

agricultural weedsabandoned farmlandplant traitsplant-soil interactionsplant invasionsphylogenetic relatednesssoil biota

作者：

Chunqiang Wei、Bingbing Jia、Lunlun Gao、Zhen Liu、Yuming Liang、Xin Zhang、Xinmin Lu

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作者单位：

School of Life Sciences,Central China Normal University,Wuhan 430079,China

State Key Laboratory of Agricultural Microbiology,Huazhong Agricultural University,Wuhan 430070,China

Institute of Invasion Biology and Agriculture Ecological Safety,Huazhong Agricultural University,Wuhan 430070,China

College of Plant Sciences and Technology,Huazhong Agricultural University,Wuhan 430070,China

Agricultural and Rural Water Conservancy Bureau of Jixi County,Anhui 245300,China

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关键词：

杂草荒废农田植物性状植物-土壤互作植物入侵系统发育关系土壤生物

基金：

National Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaFundamental Research Funds for the Central UniversitiesFundamental Research Funds for the Central Universitiesstartup funding of Huazhong Agricultural University

项目编号：

31872034321715852662020ZKPY0072662021JC011101-110200201

出版年：

2023

DOI：

10.1093/jpe/rtac044

植物生态学报(英文版)

CSCD

ISSN：1752-9921

年,卷(期)：2023.16(1)

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