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Arbuscular mycorrhizal fungal communities associated with two dominant species differ in their responses to long-term nitrogen addition in temperate grasslands

文献类型：期刊论文

作者Zheng, Zhi; Ma, Pengfei; Li, Juan; Ren, Lifei; Bai, Wenming; Tian, Qiuying; Sun, Wei5; Zhang, Wen-Hao
刊名FUNCTIONAL ECOLOGY
出版日期2018
卷号32期号:6页码:1575-1588
关键词arbuscular mycorrhizal fungi Artemisia frigida carbon allocation nitrogen enrichment photosynthetic rates soil acidification soil manganese and iron Stipa krylovii
ISSN号0269-8463
DOI10.1111/1365-2435.13081
文献子类Article
英文摘要1. Arbuscular mycorrhizal (AM) fungi are important components of grassland ecosystems and are sensitive to enhanced atmospheric nitrogen (N) deposition. Enhanced N deposition has been widely reported to reduce species richness and alter species composition across different types of grasslands world-wide. Despite extensive studies on effects of N deposition on AM fungal communities of grasslands, few studies have specifically focused on effects of N deposition on AM fungi associated with dominant species in grasslands. 2. We investigated long-term (12-year) effects of N addition (80kgha(-1)year(-1)) on AM fungal community richness in roots and rhizosphere biomass of two dominant plant species (forb Artemisia frigida and grass Stipa krylovii) in temperate steppes of northern China. 3. We found that AM fungi associated with the two dominant plant species differed in their responses to N addition. Nitrogen addition led to a significant reduction in AM fungal richness colonized in roots, and biomass in the rhizosphere of A.frigida, while N addition had little impacts on AM fungi colonized in roots and rhizosphere of S.krylovii. Nitrogen addition significantly reduced AM fungal colonization in roots and AM fungal spore density in the rhizosphere soils of A.frigida. In contrast, N addition had no effect on AM fungal colonization in roots and spore density in the rhizosphere of S.krylovii. Nitrogen addition markedly suppressed photosynthetic rates in A.frigida due to excessive foliar accumulation of manganese. The N-induced reduction in photosynthetic rates reduced allocation of C into roots in A.frigida, leading to a lower root/shoot ratio, and suppression of AM fungal community associated with A.frigida. The inhibition of AM fungi would render A.frigida less competitive in terms of acquisition of mineral nutrients in soils, thus contributing to its loss in the steppe community under conditions of elevated N deposition. 4. These findings provide a mechanistic explanation for N-evoked differential responses of AM fungal communities associated with A.frigida and S.krylovii by linking soil properties and host plants to AM fungal communities.
学科主题Ecology
出版地HOBOKEN
电子版国际标准刊号1365-2435
WOS关键词ROOT COLONIZATION ; GLOBAL ASSESSMENT ; PLANT DIVERSITY ; FATTY-ACIDS ; DEPOSITION ; CARBON ; STEPPE ; FERTILIZATION ; ENRICHMENT ; AVAILABILITY
语种英语
WOS记录号WOS:000435442500014
出版者WILEY
资助机构Ministry of Science Technology [2014FY210300] ; National Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC) [31470466, 31570403]
源URL[http://ir.ibcas.ac.cn/handle/2S10CLM1/20659]  
专题植被与环境变化国家重点实验室
作者单位1.Northeast Normal Univ, Inst Grassland Sci, Key Lab Vegetat Ecol, Minist Educ, Changchun, Jilin, Peoples R China
2.Chinese Acad Sci, Inst Bot, State Key Lab Vegetat & Environm Change, Beijing, Peoples R China
3.Univ Chinese Acad Sci, Coll Resources & Environm, Beijing, Peoples R China
4.Chinese Acad Sci, Beijing Inst Life Sci, Res Network Global Change Biol, Beijing, Peoples R China
5.Chinese Acad Sci, Inner Mongolia Res Ctr Prataculture, Beijing, Peoples R China
推荐引用方式
GB/T 7714		 Zheng, Zhi,Ma, Pengfei,Li, Juan,et al. Arbuscular mycorrhizal fungal communities associated with two dominant species differ in their responses to long-term nitrogen addition in temperate grasslands[J]. FUNCTIONAL ECOLOGY,2018,32(6):1575-1588.
APA Zheng, Zhi.,Ma, Pengfei.,Li, Juan.,Ren, Lifei.,Bai, Wenming.,...&Zhang, Wen-Hao.(2018).Arbuscular mycorrhizal fungal communities associated with two dominant species differ in their responses to long-term nitrogen addition in temperate grasslands.FUNCTIONAL ECOLOGY,32(6),1575-1588.
MLA Zheng, Zhi,et al."Arbuscular mycorrhizal fungal communities associated with two dominant species differ in their responses to long-term nitrogen addition in temperate grasslands".FUNCTIONAL ECOLOGY 32.6(2018):1575-1588.

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来源：植物研究所

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