气候变化领域集成服务门户(CCPortal): Root traits and rhizosphere processes reflect differential phosphorus acquisition strategies in contrasting Populus clones

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DOI	10.1016/j.foreco.2019.117750
	Root traits and rhizosphere processes reflect differential phosphorus acquisition strategies in contrasting Populus clones
	Xia Z.; He Y.; Yu L.; Miao J.; Korpelainen H.; Li C.
发表日期	2020
ISSN	0378-1127
卷号	457
英文摘要	Soil phosphorus (P) availability and its distribution influence plant growth and productivity. To evaluate strategies that allow genotypes to be efficient under variable P environments, we planted six hybrid Populus deltoides clones belonging to the section Aigeiros (Aig), LL1, LL9, NL351, NL35, NL1388 and NL895, to three growth conditions in a greenhouse experiment, including low P, a high homogenous P supply and a high heterogeneous P supply. Functional traits, including foliar and root traits as well as rhizosphere processes, were measured. Large genotypic variation in shoot biomass and leaf P concentration was found in response to the P supply level and pattern. Compared with no P supply, LL1, LL9 and NL895 had a greater root length, biomass and P concentration in leaves under a homogenous P supply, while growth traits of NL351, NL35 and NL1388 were not significantly affected. A heterogeneous P supply enhanced the shoot biomass of LL1 and LL9. The root proliferation of LL1 and LL9 in P-rich patches was related to increased P acquisition in leaves. By contrast, a heterogeneous P supply did not enhance the biomass accumulation and the morphological plasticity of roots in other four genotypes, NL351, NL35, NL895 and NL1388, in P-rich patches. We found that functional traits or rhizosphere processes under low P could predict high P performance in Populus clones. Genotypes with a higher specific root length under low P can accumulate a larger biomass under a homogenous P supply. Conversely, high acid phosphatase concentrations decreased the positive impact of a heterogeneous P supply on a genotype's performance. Our results provide implications and applications for silviculture and forest management. © 2019 Elsevier B.V.
关键词	Biomass Cloning Cotton Phosphatases Phosphorus Plants (botany)Soils Biomass accumulation Genotypic variations Greenhouse experiments P supplies Phosphorus acquisition Root proliferation Root traits Specific root length Ecology bioaccumulation clone concentration (composition)ecomorphology experimental study genotype nutrient availability organic acid phosphorus rhizosphere root soil nutrient Populus Populus deltoides
语种	英语
来源机构	Forest Ecology and Management
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/133141
推荐引用方式 GB/T 7714	Xia Z.,He Y.,Yu L.,et al. Root traits and rhizosphere processes reflect differential phosphorus acquisition strategies in contrasting Populus clones[J]. Forest Ecology and Management,2020,457.
APA	Xia Z.,He Y.,Yu L.,Miao J.,Korpelainen H.,&Li C..(2020).Root traits and rhizosphere processes reflect differential phosphorus acquisition strategies in contrasting Populus clones.,457.
MLA	Xia Z.,et al."Root traits and rhizosphere processes reflect differential phosphorus acquisition strategies in contrasting Populus clones".457(2020).