Stage-dependent stoichiometric homeostasis and responses of nutrient   resorption in Amaranthus mangostanus to nitrogen and phosphorus addition

doi:10.1038/srep37219

CORC > 北京大学 > 城市与环境学院

	Stage-dependent stoichiometric homeostasis and responses of nutrient resorption in Amaranthus mangostanus to nitrogen and phosphorus addition
	Peng, Huiyuan ; Chen, Yahan ; Yan, Zhengbing ; Han, Wenxuan
刊名	SCIENTIFIC REPORTS
	2016
关键词	TERRESTRIAL PLANTS USE EFFICIENCY LEAVES GROWTH CARBON YIELD PROFICIENCY ECOSYSTEMS LIMITATION STABILITY
DOI	10.1038/srep37219
英文摘要	Stoichiometric homeostasis is the ability of plants remaining their element composition relatively stable regardless of changes in nutrient availability, via various physiological mechanisms. Nutrient resorption is one of such key mechanisms, but whether and how nitrogen and phosphorus homeostasis and resorption in plants would change with growth-stages under variable nutrient supply was unclear. A nitrogen (N) and phosphorus (P) fertilizer addition experiment was conducted to evaluate the dynamics of N and P homeostasis and resorption efficiency during different growth-stages of Amaranthus mangostanus in a greenhouse. The homeostasis regulation coefficient of green-leaf P varied significantly, while that of green-leaf N maintained relatively stable across growth stages. Moreover, homeostasis regulation coefficient of N was higher at seedling stage but lower at flowering stage than that of P at corresponding stages, suggesting that the growth of A. mangostanus may switch from being more N- to P-limited from vegetative to reproductive stage. N resorption efficiency (NRE) was higher and P resorption efficiency (PRE) was lower at flowering than seed-filling stage. The nutrient dynamics displayed here suggested contrasting nutrient homeostasis and resorption responses of plants to environmental nutrient availability across growth stages. These findings can improve the understanding of nutrition maintenance mechanism of plants during their growth.; National Natural Science Foundation of China [41473068]; National Key Basic Research Program of China [2014CB954202]; Special Funds of Guizhou scientific and technological innovation team construction [20134003]; SCI(E); ARTICLE; hanwenxuan@cau.edu.cn; 6
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/458428]
专题	城市与环境学院
推荐引用方式 GB/T 7714	Peng, Huiyuan,Chen, Yahan,Yan, Zhengbing,et al. Stage-dependent stoichiometric homeostasis and responses of nutrient resorption in Amaranthus mangostanus to nitrogen and phosphorus addition[J]. SCIENTIFIC REPORTS,2016.
APA	Peng, Huiyuan,Chen, Yahan,Yan, Zhengbing,&Han, Wenxuan.(2016).Stage-dependent stoichiometric homeostasis and responses of nutrient resorption in Amaranthus mangostanus to nitrogen and phosphorus addition.SCIENTIFIC REPORTS.
MLA	Peng, Huiyuan,et al."Stage-dependent stoichiometric homeostasis and responses of nutrient resorption in Amaranthus mangostanus to nitrogen and phosphorus addition".SCIENTIFIC REPORTS (2016).