Sharing of nitrogen between connected ramets of Alternanthera philoxeroides in homogeneous environments

doi:10.1007/s11104-022-05475-5

	Sharing of nitrogen between connected ramets of Alternanthera philoxeroides in homogeneous environments
	Dong, Bi-Cheng ; Wang, Pu 2; Luo, Fang-Li
刊名	PLANT AND SOIL
	2022
卷号	478 期号:1-2 页码:445-460
关键词	Alternanthera philoxeroides Clonal plants Directional transport N-15 isotope trace Partitioning of N Physiological integration
ISSN号	0032-079X
DOI	10.1007/s11104-022-05475-5
文献子类	Article
英文摘要	Purpose Benefits of clonal integration have been widely documented in clonal species, but quantitative tests of the translocation of resources in both directions between older and younger ramets (e.g., transport rate and partitioning pattern) are still scarce. Methods A control experiment, using a clonal species Alternanthera philoxeroides as plant material and the technique of N-15 isotope, was conducted to quantify the transport rate of nitrogen (N) in two opposite directions (i.e., from younger to older ramets or the other way around) within a clone, and the partitioning proportion of N in recipient ramets. Results The amount of N-15 transported toward the apical part was markedly reduced at the higher external N level, whereas the amount of N-15 transported toward the basal part was unrelated to the external N levels. The rate of N-15 acropetal transport basically averaged 20.9%, and the rate of N-15 basipetal transport generally ranged between 0.2% and 6.3%, both being negatively dependent of Delta PNC (i.e., difference in plant N concentration [PNC] between apical and basal parts). The proportion of N-15 in stems and leaves averaged 74.7% and 18.1%, respectively; the proportion of root N-15 in the apical part significantly decreased from 7.6% to 0.4% when acropetal transport occurred. Conclusion These results suggest that N sharing between connected ramets tended to be acropetal and the partitioning pattern of N is organ-specific in A. philoxeroides, which potentially contributes to the early development of young ramets, and also to the spread of A. philoxeroides in limited N conditions.
学科主题	Agronomy ; Plant Sciences ; Soil Science
电子版国际标准刊号	1573-5036
出版地	DORDRECHT
WOS关键词	DIVISION-OF-LABOR ; CLONAL INTEGRATION ; PHYSIOLOGICAL INTEGRATION ; ALLIGATOR WEED ; PHENOTYPIC PLASTICITY ; BIOMASS ALLOCATION ; PERENNIAL GRASSES ; PLANT-GROWTH ; N-15 ; TRANSLOCATION
WOS研究方向	Science Citation Index Expanded (SCI-EXPANDED)
语种	英语
出版者	SPRINGER
WOS记录号	WOS:000795525100001
资助机构	Fundamental Research Funds for the National Natural Science Foundation of China [31500331, 32071525]
内容类型	期刊论文
源URL	[http://ir.ibcas.ac.cn/handle/2S10CLM1/28619]
专题	文献中心
作者单位	1.Beijing Forestry Univ, Sch Ecol & Nat Conservat, Beijing 100083, Peoples R China 2.Beijing Forestry Univ, Key Lab Ecol Protect Yellow River Basin Natl Fore, Beijing 100083, Peoples R China 3.Chinese Acad Sci, Inst Bot, Beijing 100093, Peoples R China
推荐引用方式 GB/T 7714	Dong, Bi-Cheng,Wang, Pu,Luo, Fang-Li. Sharing of nitrogen between connected ramets of Alternanthera philoxeroides in homogeneous environments[J]. PLANT AND SOIL,2022,478(1-2):445-460.
APA	Dong, Bi-Cheng,Wang, Pu,&Luo, Fang-Li.(2022).Sharing of nitrogen between connected ramets of Alternanthera philoxeroides in homogeneous environments.PLANT AND SOIL,478(1-2),445-460.
MLA	Dong, Bi-Cheng,et al."Sharing of nitrogen between connected ramets of Alternanthera philoxeroides in homogeneous environments".PLANT AND SOIL 478.1-2(2022):445-460.