气候变化领域集成服务门户(CCPortal): In situ seasonal patterns of root auxin concentrations and meristem length in an arctic sedge

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DOI	10.1111/nph.19616
	In situ seasonal patterns of root auxin concentrations and meristem length in an arctic sedge
	Blume-Werry, Gesche; Semenchuk, Philipp; Ljung, Karin; Milbau, Ann; Novak, Ondrej; Olofsson, Johan; Brunoni, Federica
发表日期	2024
ISSN	0028-646X
EISSN	1469-8137
起始页码	242
结束页码	3
卷号	242 期号:3
英文摘要	Seasonal dynamics of root growth play an important role in large-scale ecosystem processes; they are largely governed by growth regulatory compounds and influenced by environmental conditions. Yet, our knowledge about physiological drivers of root growth is mostly limited to laboratory-based studies on model plant species. We sampled root tips of Eriophorum vaginatum and analyzed their auxin concentrations and meristem lengths biweekly over a growing season in situ in a subarctic peatland, both in surface soil and at the permafrost thawfront. Auxin concentrations were almost five times higher in surface than in thawfront soils and increased over the season, especially at the thawfront. Surprisingly, meristem length showed an opposite pattern and was almost double in thawfront compared with surface soils. Meristem length increased from peak to late season in the surface soils but decreased at the thawfront. Our study of in situ seasonal dynamics in root physiological parameters illustrates the potential for physiological methods to be applied in ecological studies and emphasizes the importance of in situ measurements. The strong effect of root location and the unexpected opposite patterns of meristem length and auxin concentrations likely show that auxin actively governs root growth to ensure a high potential for nutrient uptake at the thawfront.
英文关键词	auxin; Eriophorum vaginatum; meristem length; permafrost; root growth; root phenology
语种	英语
WOS研究方向	Plant Sciences
WOS类目	Plant Sciences
WOS记录号	WOS:001167077800001
来源期刊	NEW PHYTOLOGIST
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/295179
作者单位	Umea University; University Centre Svalbard (UNIS); Umea University; Swedish University of Agricultural Sciences; Palacky University Olomouc; Czech Academy of Sciences; Institute of Experimental Botany of the Czech Academy of Sciences
推荐引用方式 GB/T 7714	Blume-Werry, Gesche,Semenchuk, Philipp,Ljung, Karin,et al. In situ seasonal patterns of root auxin concentrations and meristem length in an arctic sedge[J],2024,242(3).
APA	Blume-Werry, Gesche.,Semenchuk, Philipp.,Ljung, Karin.,Milbau, Ann.,Novak, Ondrej.,...&Brunoni, Federica.(2024).In situ seasonal patterns of root auxin concentrations and meristem length in an arctic sedge.NEW PHYTOLOGIST,242(3).
MLA	Blume-Werry, Gesche,et al."In situ seasonal patterns of root auxin concentrations and meristem length in an arctic sedge".NEW PHYTOLOGIST 242.3(2024).