Differential responses of arbuscular mycorrhizal fungi to nitrogen addition in a near pristine Tibetan alpine meadow
Abstract Elucidating the responses of soil microbial abundance and community composition to nitrogen (N) addition is important for predicting ecosystem function under increased atmospheric N deposition. We examined the arbuscular mycorrhizal (AM) fungal community under three N forms ( -N, -N, and NH...
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| Veröffentlicht in: | FEMS microbiology ecology 2014-09, Vol.89 (3), p.594-605 |
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| creator | Zheng, Yong Kim, Yong-Chan Tian, Xiao-Fang Chen, Liang Yang, Wei Gao, Cheng Song, Ming-Hua Xu, Xing-Liang Guo, Liang-Dong |
| description | Abstract
Elucidating the responses of soil microbial abundance and community composition to nitrogen (N) addition is important for predicting ecosystem function under increased atmospheric N deposition. We examined the arbuscular mycorrhizal (AM) fungal community under three N forms ( -N, -N, and NH4NO3-N) and two N rates (1.5 and 7.5 g N m−2 year−1) in an alpine meadow of the Qinghai–Tibetan Plateau. AM fungal extraradical hyphal density was significantly decreased by -N in May, but was not affected by N form nor N rate in August. N rate, but not N form, significantly affected AM fungal spore density; high N rate decreased spore density. No direct N addition effect was observed on AM fungal community; however, soil available phosphorus, pH, and -N were considered as important factors that influenced AM fungal community composition. Structural equation model results showed that N rate, not N form, strongly affected soil characteristics, which directly influenced community compositions of plants and AM fungi, as well as spore density. Therefore, AM fungal community was influenced by N addition, primarily because of altered soil characteristics, and partially by a modified plant community, but not or just slightly by direct N addition effects in this alpine meadow ecosystem. |
| doi_str_mv | 10.1111/1574-6941.12361 |
| format | Article |
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Elucidating the responses of soil microbial abundance and community composition to nitrogen (N) addition is important for predicting ecosystem function under increased atmospheric N deposition. We examined the arbuscular mycorrhizal (AM) fungal community under three N forms ( -N, -N, and NH4NO3-N) and two N rates (1.5 and 7.5 g N m−2 year−1) in an alpine meadow of the Qinghai–Tibetan Plateau. AM fungal extraradical hyphal density was significantly decreased by -N in May, but was not affected by N form nor N rate in August. N rate, but not N form, significantly affected AM fungal spore density; high N rate decreased spore density. No direct N addition effect was observed on AM fungal community; however, soil available phosphorus, pH, and -N were considered as important factors that influenced AM fungal community composition. Structural equation model results showed that N rate, not N form, strongly affected soil characteristics, which directly influenced community compositions of plants and AM fungi, as well as spore density. Therefore, AM fungal community was influenced by N addition, primarily because of altered soil characteristics, and partially by a modified plant community, but not or just slightly by direct N addition effects in this alpine meadow ecosystem.</description><identifier>ISSN: 0168-6496</identifier><identifier>EISSN: 1574-6941</identifier><identifier>DOI: 10.1111/1574-6941.12361</identifier><identifier>PMID: 24890754</identifier><identifier>CODEN: FMECEZ</identifier><language>eng</language><publisher>England: Blackwell Publishing Ltd</publisher><subject><![CDATA[454 pyrosequencing ; AMF ; Ammonium nitrate ; Community composition ; Ecological function ; Ecology ; Fungi - classification ; Fungi - growth & development ; Fungi - isolation & purification ; Fungi - metabolism ; Grassland ; Hyphae - growth & development ; Meadows ; Microbiology ; Mycorrhizae - classification ; Mycorrhizae - growth & development ; Mycorrhizae - isolation & purification ; Mycorrhizae - metabolism ; Nitrogen ; Nitrogen - metabolism ; nitrogen deposition ; Plant communities ; Qinghai–Tibetan Plateau ; Soil Microbiology ; Spores, Fungal - growth & development ; Tibet]]></subject><ispartof>FEMS microbiology ecology, 2014-09, Vol.89 (3), p.594-605</ispartof><rights>2014 Federation of European Microbiological Societies. Published by John Wiley & Sons Ltd 2014</rights><rights>2014 Federation of European Microbiological Societies. Published by John Wiley & Sons Ltd. All rights reserved</rights><rights>2014 Federation of European Microbiological Societies. Published by John Wiley & Sons Ltd. All rights reserved.</rights><rights>Copyright © 2014 Federation of European Microbiological Societies. Published by John Wiley & Sons Ltd</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c5501-dd40b435a69394223d9814c5a700aead340b2fd15f9bb56fe96b14dbd993c7a23</citedby><cites>FETCH-LOGICAL-c5501-dd40b435a69394223d9814c5a700aead340b2fd15f9bb56fe96b14dbd993c7a23</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://onlinelibrary.wiley.com/doi/pdf/10.1111%2F1574-6941.12361$$EPDF$$P50$$Gwiley$$H</linktopdf><linktohtml>$$Uhttps://onlinelibrary.wiley.com/doi/full/10.1111%2F1574-6941.12361$$EHTML$$P50$$Gwiley$$H</linktohtml><link.rule.ids>314,776,780,1411,27901,27902,45550,45551</link.rule.ids><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/24890754$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Zheng, Yong</creatorcontrib><creatorcontrib>Kim, Yong-Chan</creatorcontrib><creatorcontrib>Tian, Xiao-Fang</creatorcontrib><creatorcontrib>Chen, Liang</creatorcontrib><creatorcontrib>Yang, Wei</creatorcontrib><creatorcontrib>Gao, Cheng</creatorcontrib><creatorcontrib>Song, Ming-Hua</creatorcontrib><creatorcontrib>Xu, Xing-Liang</creatorcontrib><creatorcontrib>Guo, Liang-Dong</creatorcontrib><title>Differential responses of arbuscular mycorrhizal fungi to nitrogen addition in a near pristine Tibetan alpine meadow</title><title>FEMS microbiology ecology</title><addtitle>FEMS Microbiol Ecol</addtitle><description>Abstract
Elucidating the responses of soil microbial abundance and community composition to nitrogen (N) addition is important for predicting ecosystem function under increased atmospheric N deposition. We examined the arbuscular mycorrhizal (AM) fungal community under three N forms ( -N, -N, and NH4NO3-N) and two N rates (1.5 and 7.5 g N m−2 year−1) in an alpine meadow of the Qinghai–Tibetan Plateau. AM fungal extraradical hyphal density was significantly decreased by -N in May, but was not affected by N form nor N rate in August. N rate, but not N form, significantly affected AM fungal spore density; high N rate decreased spore density. No direct N addition effect was observed on AM fungal community; however, soil available phosphorus, pH, and -N were considered as important factors that influenced AM fungal community composition. Structural equation model results showed that N rate, not N form, strongly affected soil characteristics, which directly influenced community compositions of plants and AM fungi, as well as spore density. Therefore, AM fungal community was influenced by N addition, primarily because of altered soil characteristics, and partially by a modified plant community, but not or just slightly by direct N addition effects in this alpine meadow ecosystem.</description><subject>454 pyrosequencing</subject><subject>AMF</subject><subject>Ammonium nitrate</subject><subject>Community composition</subject><subject>Ecological function</subject><subject>Ecology</subject><subject>Fungi - classification</subject><subject>Fungi - growth & development</subject><subject>Fungi - isolation & purification</subject><subject>Fungi - metabolism</subject><subject>Grassland</subject><subject>Hyphae - growth & development</subject><subject>Meadows</subject><subject>Microbiology</subject><subject>Mycorrhizae - classification</subject><subject>Mycorrhizae - growth & development</subject><subject>Mycorrhizae - isolation & purification</subject><subject>Mycorrhizae - metabolism</subject><subject>Nitrogen</subject><subject>Nitrogen - metabolism</subject><subject>nitrogen deposition</subject><subject>Plant communities</subject><subject>Qinghai–Tibetan Plateau</subject><subject>Soil Microbiology</subject><subject>Spores, Fungal - growth & development</subject><subject>Tibet</subject><issn>0168-6496</issn><issn>1574-6941</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2014</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><recordid>eNqNkU1rHSEUhqU0NDe3XXdXhG5CYBIdP2ZclnxDQjbJWnTU1DCjU50h3Pz6OLlJKKXQulEPz3nw-ALwFaNDXNYRZg2tuKD4ENeE4w9g9V75CFYI87biVPBdsJfzA0KYEYo-gd2atgI1jK7AdOKds8mGyaseJpvHGLLNMDqokp5zN_cqwWHTxZR--qfCuDncezhFGPyU4r0NUBnjJx8D9OUMgy0NY_J58sHCW6_tpEq9H5frYJWJj5_BjlN9tl9e9zW4Ozu9Pb6orm7OL49_XFUdYwhXxlCkKWGKCyJoXRMjWkw7phqEVBGVWXTtDGZOaM24s4JrTI02QpCuUTVZg_2td0zx12zzJAefO9v3Ktg4Z4kZ5y0hpKH_gTKBkKj5Yv3-B_oQ5xTKIAvVUkFRka7B0ZbqUsw5WSfLnwwqbSRGcslOLknJJSn5kl3p-PbqnfVgzTv_FlYB2BZ49L3d_Msnz06v38QH2744j3_tqn57xTMluK_o</recordid><startdate>201409</startdate><enddate>201409</enddate><creator>Zheng, Yong</creator><creator>Kim, Yong-Chan</creator><creator>Tian, Xiao-Fang</creator><creator>Chen, Liang</creator><creator>Yang, Wei</creator><creator>Gao, Cheng</creator><creator>Song, Ming-Hua</creator><creator>Xu, Xing-Liang</creator><creator>Guo, Liang-Dong</creator><general>Blackwell Publishing Ltd</general><general>Oxford University Press</general><scope>CGR</scope><scope>CUY</scope><scope>CVF</scope><scope>ECM</scope><scope>EIF</scope><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7QL</scope><scope>7QP</scope><scope>7QR</scope><scope>7SN</scope><scope>7T7</scope><scope>7TK</scope><scope>7TM</scope><scope>8FD</scope><scope>C1K</scope><scope>FR3</scope><scope>K9.</scope><scope>M7N</scope><scope>P64</scope><scope>RC3</scope><scope>7X8</scope></search><sort><creationdate>201409</creationdate><title>Differential responses of arbuscular mycorrhizal fungi to nitrogen addition in a near pristine Tibetan alpine meadow</title><author>Zheng, Yong ; 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Elucidating the responses of soil microbial abundance and community composition to nitrogen (N) addition is important for predicting ecosystem function under increased atmospheric N deposition. We examined the arbuscular mycorrhizal (AM) fungal community under three N forms ( -N, -N, and NH4NO3-N) and two N rates (1.5 and 7.5 g N m−2 year−1) in an alpine meadow of the Qinghai–Tibetan Plateau. AM fungal extraradical hyphal density was significantly decreased by -N in May, but was not affected by N form nor N rate in August. N rate, but not N form, significantly affected AM fungal spore density; high N rate decreased spore density. No direct N addition effect was observed on AM fungal community; however, soil available phosphorus, pH, and -N were considered as important factors that influenced AM fungal community composition. Structural equation model results showed that N rate, not N form, strongly affected soil characteristics, which directly influenced community compositions of plants and AM fungi, as well as spore density. Therefore, AM fungal community was influenced by N addition, primarily because of altered soil characteristics, and partially by a modified plant community, but not or just slightly by direct N addition effects in this alpine meadow ecosystem.</abstract><cop>England</cop><pub>Blackwell Publishing Ltd</pub><pmid>24890754</pmid><doi>10.1111/1574-6941.12361</doi><tpages>12</tpages><oa>free_for_read</oa></addata></record> |
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| subjects | 454 pyrosequencing AMF Ammonium nitrate Community composition Ecological function Ecology Fungi - classification Fungi - growth & development Fungi - isolation & purification Fungi - metabolism Grassland Hyphae - growth & development Meadows Microbiology Mycorrhizae - classification Mycorrhizae - growth & development Mycorrhizae - isolation & purification Mycorrhizae - metabolism Nitrogen Nitrogen - metabolism nitrogen deposition Plant communities Qinghai–Tibetan Plateau Soil Microbiology Spores, Fungal - growth & development Tibet |
| title | Differential responses of arbuscular mycorrhizal fungi to nitrogen addition in a near pristine Tibetan alpine meadow |
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