Contrasting effects of ectomycorrhizal and arbuscular mycorrhizal tropical tree species on soil nitrogen cycling: the potential mechanisms and corresponding adaptive strategies.
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| Title: | Contrasting effects of ectomycorrhizal and arbuscular mycorrhizal tropical tree species on soil nitrogen cycling: the potential mechanisms and corresponding adaptive strategies. |
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| Authors: | Lin, Guigang1,2 linguigang@126.com, Guo, Dali3, Li, Liang3, Ma, Chengen3, Zeng, De‐Hui1,2 |
| Source: | Oikos. Apr2018, Vol. 127 Issue 4, p518-530. 12p. 2 Charts, 5 Graphs, 1 Map. |
| Subjects: | Ectomycorrhizal fungi, Nitrogen in soils, Multipurpose trees, Mycorrhizal fungi, Monoculture agriculture |
| Abstract: | While it is increasingly recognized that ectomycorrhizal (ECM) and arbuscular mycorrhizal (AM) tree species vary in their effects on soil nitrogen (N) cycling, little is known about the mechanisms causing and how ECM and AM trees adapt to this variation. Using monoculture plots of six ECM and eight AM tropical trees planted in a common garden, we examined whether the contrasting effects of ECM and AM trees on soil N cycling could be explained by their differences in plant traits. Furthermore, rhizosphere effects on soil N transformations and soil exploration by fine roots were also measured to assess whether ECM and AM trees differed in N acquisition capacities. Results showed that soil NH4+‐N concentration, net N mineralization and net nitrification rates were markedly lower, but soil C:N ratio was significantly higher beneath ECM trees than beneath AM trees. This more closed N cycling caused by ECM trees was attributed to their resource‐conservative traits, especially the poorer leaf litter decomposability compared with AM trees. To adapt to their induced lower soil N availability, ECM trees were found to have greater rhizosphere effects on NO3‐‐N concentration, net N mineralization and net nitrification rates to mine N, and higher soil exploration in terms of root length density to scavenge N from soils, indicating that these two strategies work in synergy to meet N demand of ECM trees. These findings suggest that ECM and AM trees have contrasting effects on soil N cycling owing to their differences in leaf litter decomposability and correspondingly possess different N acquisition capacities. [ABSTRACT FROM AUTHOR] |
| Copyright of Oikos is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
| Database: | Engineering Source |
| FullText | Text: Availability: 0 |
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| Header | DbId: egs DbLabel: Engineering Source An: 128865795 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: Contrasting effects of ectomycorrhizal and arbuscular mycorrhizal tropical tree species on soil nitrogen cycling: the potential mechanisms and corresponding adaptive strategies. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Lin%2C+Guigang%22">Lin, Guigang</searchLink><relatesTo>1,2</relatesTo><i> linguigang@126.com</i><br /><searchLink fieldCode="AR" term="%22Guo%2C+Dali%22">Guo, Dali</searchLink><relatesTo>3</relatesTo><br /><searchLink fieldCode="AR" term="%22Li%2C+Liang%22">Li, Liang</searchLink><relatesTo>3</relatesTo><br /><searchLink fieldCode="AR" term="%22Ma%2C+Chengen%22">Ma, Chengen</searchLink><relatesTo>3</relatesTo><br /><searchLink fieldCode="AR" term="%22Zeng%2C+De‐Hui%22">Zeng, De‐Hui</searchLink><relatesTo>1,2</relatesTo> – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Oikos%22">Oikos</searchLink>. Apr2018, Vol. 127 Issue 4, p518-530. 12p. 2 Charts, 5 Graphs, 1 Map. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Ectomycorrhizal+fungi%22">Ectomycorrhizal fungi</searchLink><br /><searchLink fieldCode="DE" term="%22Nitrogen+in+soils%22">Nitrogen in soils</searchLink><br /><searchLink fieldCode="DE" term="%22Multipurpose+trees%22">Multipurpose trees</searchLink><br /><searchLink fieldCode="DE" term="%22Mycorrhizal+fungi%22">Mycorrhizal fungi</searchLink><br /><searchLink fieldCode="DE" term="%22Monoculture+agriculture%22">Monoculture agriculture</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: While it is increasingly recognized that ectomycorrhizal (ECM) and arbuscular mycorrhizal (AM) tree species vary in their effects on soil nitrogen (N) cycling, little is known about the mechanisms causing and how ECM and AM trees adapt to this variation. Using monoculture plots of six ECM and eight AM tropical trees planted in a common garden, we examined whether the contrasting effects of ECM and AM trees on soil N cycling could be explained by their differences in plant traits. Furthermore, rhizosphere effects on soil N transformations and soil exploration by fine roots were also measured to assess whether ECM and AM trees differed in N acquisition capacities. Results showed that soil NH4+‐N concentration, net N mineralization and net nitrification rates were markedly lower, but soil C:N ratio was significantly higher beneath ECM trees than beneath AM trees. This more closed N cycling caused by ECM trees was attributed to their resource‐conservative traits, especially the poorer leaf litter decomposability compared with AM trees. To adapt to their induced lower soil N availability, ECM trees were found to have greater rhizosphere effects on NO3‐‐N concentration, net N mineralization and net nitrification rates to mine N, and higher soil exploration in terms of root length density to scavenge N from soils, indicating that these two strategies work in synergy to meet N demand of ECM trees. These findings suggest that ECM and AM trees have contrasting effects on soil N cycling owing to their differences in leaf litter decomposability and correspondingly possess different N acquisition capacities. [ABSTRACT FROM AUTHOR] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of Oikos is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.) |
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| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.1111/oik.04751 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 12 StartPage: 518 Subjects: – SubjectFull: Ectomycorrhizal fungi Type: general – SubjectFull: Nitrogen in soils Type: general – SubjectFull: Multipurpose trees Type: general – SubjectFull: Mycorrhizal fungi Type: general – SubjectFull: Monoculture agriculture Type: general Titles: – TitleFull: Contrasting effects of ectomycorrhizal and arbuscular mycorrhizal tropical tree species on soil nitrogen cycling: the potential mechanisms and corresponding adaptive strategies. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Lin, Guigang – PersonEntity: Name: NameFull: Guo, Dali – PersonEntity: Name: NameFull: Li, Liang – PersonEntity: Name: NameFull: Ma, Chengen – PersonEntity: Name: NameFull: Zeng, De‐Hui IsPartOfRelationships: – BibEntity: Dates: – D: 01 M: 04 Text: Apr2018 Type: published Y: 2018 Identifiers: – Type: issn-print Value: 00301299 Numbering: – Type: volume Value: 127 – Type: issue Value: 4 Titles: – TitleFull: Oikos Type: main |
| ResultId | 1 |
