气候变化领域集成服务门户(CCPortal): Clonal integration driven by source-sink relationships is constrained by rhizome branching architecture in a running bamboo species (Phyllostachys glauca): A 15N assessment in the field

CCPortal

DOI	10.1016/j.foreco.2020.118754
	Clonal integration driven by source-sink relationships is constrained by rhizome branching architecture in a running bamboo species (Phyllostachys glauca): A 15N assessment in the field
	Shi J.; Mao S.; Wang L.; Ye X.; Wu J.; Wang G.; Chen F.; Yang Q.
发表日期	2021
ISSN	0378-1127
卷号	481
英文摘要	Source-sink relationships and branching architecture are two determinants of clonal integration, but their joint effects on resource translocation are still unclear. Our aim was to elucidate the pattern and mechanism of resource translocation controlled by source-sink relationships and branching architecture. We conducted a 15N-tracing experiment in six plots of a running bamboo, Phyllostachys glauca, in the field. The immature ramets and mature ramets were defined as strong sinks and weak sinks according to their sink strength, and the territories of integrated ramets were classified into zero-barrier zones and barrier zones considering rhizome branching architecture. The translocation of 15N for all ramets showed a logarithmic pattern over time with a peak around the fifth week after labelling. Spatially, 15N was exported first to ramets in zero-barrier zones within three days and then to ramets in barrier zones within three weeks. Ramets in zero-barrier zones had a significantly higher translocation intensity (1653.2‰), speed (1.95 m/day) and amount (39.9 mg kg−1), and a shorter translocation time (three days) than ramets in barrier zones (61.3‰, 0.86 m/day, 2.3 mg kg−1 and 1.4 weeks, respectively). In zero-barrier zones, translocation intensity and amount in immature ramets were 6.7 and 3.4 times greater than those in mature ramets, respectively. In barrier zones, translocation traits (intensity, speed, time, amount) of immature ramets and mature ramets were similar. In addition, distance did not affect nitrogen translocation pattern or the effects of rhizome branching architecture and source-sink relationships on nitrogen translocation. The nitrogen translocation was mainly confined in zero-barrier zones by rhizome branching architecture, where source-sink relationships worked. In the clonal integration of P. glauca, source-sink relationships are the driving forces, while rhizome branching architecture acts as a flow restrictor. The results provide implications for spreading control and fertilizer applications on running bamboos. © 2020 Elsevier B.V.
英文关键词	Bamboo expansion; Distance effect; Fertilizer application; Monopodial bamboo; Physiological integration; Stable isotopes; Temporal-spatial pattern
语种	英语
scopus关键词	Bamboo; Nitrogen; Bamboo species; Driving forces; Fertilizer applications; Flow restrictors; Sink strength; Source-sink relationships; Spreading control; Translocation pattern; Integration; assessment method; bamboo; clone; experimental study; fertilizer application; nitrogen isotope; ramet; rhizome; source-sink dynamics; Bamboo; Barriers; Clones; Integration; Nitrogen; Patterns; Translocation; Velocity; Bambusa; Phyllostachys
来源期刊	Forest Ecology and Management
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/154789
作者单位	College of Forestry, Jiangxi Agricultural University, Nanchang, 330045, China; Jiangxi Provincial Key Laboratory for Bamboo Germplasm Resources and Utilization, Nanchang, 330045, China; Institute of Botany, Chinese Academy of Sciences, Beijing, 100093, China
推荐引用方式 GB/T 7714	Shi J.,Mao S.,Wang L.,et al. Clonal integration driven by source-sink relationships is constrained by rhizome branching architecture in a running bamboo species (Phyllostachys glauca): A 15N assessment in the field[J],2021,481.
APA	Shi J..,Mao S..,Wang L..,Ye X..,Wu J..,...&Yang Q..(2021).Clonal integration driven by source-sink relationships is constrained by rhizome branching architecture in a running bamboo species (Phyllostachys glauca): A 15N assessment in the field.Forest Ecology and Management,481.
MLA	Shi J.,et al."Clonal integration driven by source-sink relationships is constrained by rhizome branching architecture in a running bamboo species (Phyllostachys glauca): A 15N assessment in the field".Forest Ecology and Management 481(2021).