Is resource allocation and grain yield of rice altered by inoculation with arbuscular mycorrhizal fungi?  

作　　者：Shujuan Zhang Li Wang Fang Ma Keith J.Bloomfield Jixian Yang Owen K.Atkin 

机构地区：[1]State Key Laboratory of Urban Water Resource and Environment,School of Municipal and Environmental Engineering,Harbin Institute of Technology,73 Huanghe Road,Nangang District,Harbin 150090,China [2]ARC Centre of Excellence in Plant Energy Biology,Division of Plant Science,Research School of Biology,The Australian National University,Building 46,Sullivans Creek Road,Canberra,Australian Capital Territory 0200,Australia

出　　处：《Journal of Plant Ecology》2015年第4期436-448,共13页植物生态学报（英文版）

基　　金：National Natural Science Foundation of China(51179041);Major Science and Technology Program for Water Pollution Control and Treatment(2013ZX07201007);National Creative Research Group from the National Natural Science Foundation of China(51121062);State Key Lab of Urban Water Resource and Environment,Harbin Institute of Technology,China(HIT)(2011TS07);Natural Science Foundation of Hei Longjiang Province,China(E201206);Special Fund for Science and Technology Innovation of Harbin(2012RFLXS026);Australian Research Council Centre of Excellence in Plant Energy Biology(CE140100008 to O.K.A.).

摘　　要：Aims our study quantified the combined effects of fertilization and inoculation with arbuscular mycorrhizal fungi(AMF)on grain yield and allocation of biomass and nutrients in field-grown rice(Oryza sativa l.).Methods a two-factor experiment was conducted at a field site in northeast of China(in shuangcheng,Heilongjiang Province,songhua river basin):six nitrogen-phosphorus-potassium fertilizer levels were provided(0,20,40,60,80 and 100%of the local norm of ferti-lizer supply),with or without inoculation with Glomus mosseae.at maturity,we quantified the percentage of root length colonization by AMF,grain yield,shoot:root ratios,shoot N and P contents and nutrients allocated to panicles,leaves and stems.Important Findingsas expected,inoculation resulted in greatly increased AMF colo-nization,which in turn led to higher shoot:root ratios and greater shoot N contents.shoot:root ratios of inoculated rice increased with increasing fertilization while there was a significant interaction between fertilization and inoculation on shoot:root ratio.additionally,a F inoculation increased panicle:shoot ratios,panicle N:shoot N ratios and panicle P:shoot P ratios,especially in plants grown at low fertilizer levels.Importantly,inoculated rice exhibited higher grain yield,with the maximum improvement(near 62%)at the lower fertilizer end.our results showed that(i)AMFinoculated plants conform to the functional equilibrium theory,albeit to a reduced extent compared to non-inoculated plants and(ii)AMF inoculation resulted in greater allocation of shoot biomass to panicles and increased grain yield by stimulating N and P redis-tribution to panicles.

关 键 词：arbuscular mycorrhizal fungi resource allocation RICE grain yield FERTILIZER 

分 类 号：S51[农业科学—作物学]