Oxygen-deficiency and allelochemicals affect Sphagnum spore persistence in peatlands

doi:10.1007/s11104-018-3809-0

	Oxygen-deficiency and allelochemicals affect Sphagnum spore persistence in peatlands
	Feng, Lu 1,2,3,4; Sundberg, Sebastian 1,5; Ooi, Mark K. J.6; Wu, Yu-Huan 3,7; Wang, Meng 1,4; Bu, Zhao-Jun 1,4
刊名	PLANT AND SOIL
	2018-11-01
卷号	432 期号:1-2 页码:403-413
关键词	Sphagnum Spore longevity pH Peatland Dissolved oxygen Allelochemicals
ISSN号	0032-079X
DOI	10.1007/s11104-018-3809-0
英文摘要	AimsTo test the effects of characteristic ecological gradients in peatlands including oxygen-deficiency and allelopathy on Sphagnum spore persistence.MethodsWe determined the initial viability of Sphagnum spores and then stored the spores for 60days, either dry, in ultrapure water, peatland surface water or Sphagnum water leachate (the latter two solutions rich in allelochemicals from Sphagnum). We varied oxygen concentration by injecting air at three different concentrations during the storage experiment. After retrieval from experimental storage, spore germinability index was assessed.ResultsGerminability index after air injection was lower than under oxygen-deficiency. Germinability index in the peatland surface water and Sphagnum leachate water was higher than in ultrapure water, under oxygen-deficiency. Overall, dissolved oxygen and high pH negatively affected spore germinability and, consequently, viability.ConclusionsThese results indicate that once dispersed onto bryophyte substrates or waterlogged hollows, Sphagnum spores can maintain viability better than when exposed to dry conditions or in water without allelochemicals. Extreme longevity of Sphagnum spores may be attributed to the oxygen-deficient, waterlogged and acidic Sphagnum-dominated peatland habitat with allelopathic substrates.
资助项目	National Key Research and Development Project[2016YFA0602301] ; National Key Research and Development Project[2016YFC0500407] ; National Nature Science Foundation of China[41471043] ; National Nature Science Foundation of China[41571049] ; National Nature Science Foundation of China[41871046]
WOS研究方向	Agriculture ; Plant Sciences
语种	英语
出版者	SPRINGER
WOS记录号	WOS:000447871600027
内容类型	期刊论文
源URL	[http://210.72.129.5/handle/321005/123261]
专题	中国科学院沈阳应用生态研究所
通讯作者	Bu, Zhao-Jun
作者单位	1.Northeast Normal Univ, State Environm Protect Key Lab Wetland Ecol & Veg, Inst Peat & Mire Res, 5268 Renmin St, Changchun 130024, Jilin, Peoples R China 2.Binzhou Univ, Shandong Prov Key Lab Ecoenvironm Sci Yellow Rive, Binzhou 256603, Peoples R China 3.Chinese Acad Sci, Inst Appl Ecol, Key Lab Forest Ecol & Management, 72 Wenhua Rd, Shenyang 110016, Liaoning, Peoples R China 4.Jilin Prov Key Lab Wetland Ecol Proc & Environm C, 5268 Renmin St, Changchun 130024, Jilin, Peoples R China 5.Swedish Univ Agr Sci, Swedish Species Informat Ctr, POB 7007, SE-75007 Uppsala, Sweden 6.Univ New South Wales, Sch Biol Earth & Environm Sci, Ctr Ecosyst Sci, Sydney, NSW 2052, Australia 7.Hangzhou Normal Univ, Sch Life & Environm Sci, Hangzhou 310036, Zhejiang, Peoples R China
推荐引用方式 GB/T 7714	Feng, Lu,Sundberg, Sebastian,Ooi, Mark K. J.,et al. Oxygen-deficiency and allelochemicals affect Sphagnum spore persistence in peatlands[J]. PLANT AND SOIL,2018,432(1-2):403-413.
APA	Feng, Lu,Sundberg, Sebastian,Ooi, Mark K. J.,Wu, Yu-Huan,Wang, Meng,&Bu, Zhao-Jun.(2018).Oxygen-deficiency and allelochemicals affect Sphagnum spore persistence in peatlands.PLANT AND SOIL,432(1-2),403-413.
MLA	Feng, Lu,et al."Oxygen-deficiency and allelochemicals affect Sphagnum spore persistence in peatlands".PLANT AND SOIL 432.1-2(2018):403-413.