Multi-symbiotic systems: functional implications of the coexistence of grass-endophyte and legume-rhizobia symbioses.
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| Title: | Multi-symbiotic systems: functional implications of the coexistence of grass-endophyte and legume-rhizobia symbioses. |
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| Authors: | García Parisi, Pablo A.1 pgarcia@agro.uba.ar, Lattanzi, Fernando A.2, Grimoldi, Augustín A.1, Omacini, Marina3 |
| Source: | Oikos. May2015, Vol. 124 Issue 5, p553-560. 8p. 1 Diagram, 1 Chart, 2 Graphs. |
| Subjects: | Endophytes, Microbiology, Plants, Plant ecology, Plant communities, Nitrogen fixation, Biomass |
| Abstract: | The coexistence of symbionts with different functional roles in co-occurring plants is highly probable in terrestrial ecosystems. Analyses of how plants and microbes interact above- and belowground in multi-symbiotic systems are key to understand community structure and ecosystem functioning. We performed an outdoor experiment in mesocosms to investigate the consequences of the interaction of a provider belowground symbiont of legumes (nitrogen-fixing bacteria) and a protector aerial fungal symbiont of grasses ( Epichloё endophyte) on nitrogen dynamics and aboveground net primary productivity. Four plants of Trifolium repens (Trifolium, a perennial legume) either inoculated or not with Rhizobium leguminosarum, grew surrounded by 16 plants of Lolium multiflorum (Lolium, an annual grass), with either low or high levels of the endophyte Neotyphodium occultans. After five months, we quantified the number of nodules in Trifolium roots, shoot biomass of both plant species, and the contribution of atmospheric nitrogen fixation vs. soil nitrogen uptake to above ground nitrogen in each plant species. The endophyte increased grass biomass production (+ 16%), and nitrogen uptake from the soil - the main source for the grass. Further, it reduced the nodulation of neighbour Trifolium plants (−50%). Notably, due to a compensatory increase in nitrogen fixation per nodule, this reduced neither its atmospheric nitrogen fixation - the main source of nitrogen for the legume - nor its biomass production, both of which were doubled by rhizobial inoculation. In consequence, the total amount of nitrogen in aboveground biomass and aboveground productivity were greatest in mesocosms with both symbionts (i.e. high rhizobia + high endophyte). These results show that, in spite of the deleterious effect of the endophyte on the establishment of the rhizobia-legume symbiosis, the coexistence of these symbionts, leading to additive effects on nitrogen capture and aboveground productivity, can generate complementarity on the functioning of multi-symbiotic systems. [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 |
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| Header | DbId: egs DbLabel: Engineering Source An: 102447807 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: Multi-symbiotic systems: functional implications of the coexistence of grass-endophyte and legume-rhizobia symbioses. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22García+Parisi%2C+Pablo+A%2E%22">García Parisi, Pablo A.</searchLink><relatesTo>1</relatesTo><i> pgarcia@agro.uba.ar</i><br /><searchLink fieldCode="AR" term="%22Lattanzi%2C+Fernando+A%2E%22">Lattanzi, Fernando A.</searchLink><relatesTo>2</relatesTo><br /><searchLink fieldCode="AR" term="%22Grimoldi%2C+Augustín+A%2E%22">Grimoldi, Augustín A.</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Omacini%2C+Marina%22">Omacini, Marina</searchLink><relatesTo>3</relatesTo> – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Oikos%22">Oikos</searchLink>. May2015, Vol. 124 Issue 5, p553-560. 8p. 1 Diagram, 1 Chart, 2 Graphs. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Endophytes%22">Endophytes</searchLink><br /><searchLink fieldCode="DE" term="%22Microbiology%22">Microbiology</searchLink><br /><searchLink fieldCode="DE" term="%22Plants%22">Plants</searchLink><br /><searchLink fieldCode="DE" term="%22Plant+ecology%22">Plant ecology</searchLink><br /><searchLink fieldCode="DE" term="%22Plant+communities%22">Plant communities</searchLink><br /><searchLink fieldCode="DE" term="%22Nitrogen+fixation%22">Nitrogen fixation</searchLink><br /><searchLink fieldCode="DE" term="%22Biomass%22">Biomass</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: The coexistence of symbionts with different functional roles in co-occurring plants is highly probable in terrestrial ecosystems. Analyses of how plants and microbes interact above- and belowground in multi-symbiotic systems are key to understand community structure and ecosystem functioning. We performed an outdoor experiment in mesocosms to investigate the consequences of the interaction of a provider belowground symbiont of legumes (nitrogen-fixing bacteria) and a protector aerial fungal symbiont of grasses ( Epichloё endophyte) on nitrogen dynamics and aboveground net primary productivity. Four plants of Trifolium repens (Trifolium, a perennial legume) either inoculated or not with Rhizobium leguminosarum, grew surrounded by 16 plants of Lolium multiflorum (Lolium, an annual grass), with either low or high levels of the endophyte Neotyphodium occultans. After five months, we quantified the number of nodules in Trifolium roots, shoot biomass of both plant species, and the contribution of atmospheric nitrogen fixation vs. soil nitrogen uptake to above ground nitrogen in each plant species. The endophyte increased grass biomass production (+ 16%), and nitrogen uptake from the soil - the main source for the grass. Further, it reduced the nodulation of neighbour Trifolium plants (−50%). Notably, due to a compensatory increase in nitrogen fixation per nodule, this reduced neither its atmospheric nitrogen fixation - the main source of nitrogen for the legume - nor its biomass production, both of which were doubled by rhizobial inoculation. In consequence, the total amount of nitrogen in aboveground biomass and aboveground productivity were greatest in mesocosms with both symbionts (i.e. high rhizobia + high endophyte). These results show that, in spite of the deleterious effect of the endophyte on the establishment of the rhizobia-legume symbiosis, the coexistence of these symbionts, leading to additive effects on nitrogen capture and aboveground productivity, can generate complementarity on the functioning of multi-symbiotic systems. [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.01540 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 8 StartPage: 553 Subjects: – SubjectFull: Endophytes Type: general – SubjectFull: Microbiology Type: general – SubjectFull: Plants Type: general – SubjectFull: Plant ecology Type: general – SubjectFull: Plant communities Type: general – SubjectFull: Nitrogen fixation Type: general – SubjectFull: Biomass Type: general Titles: – TitleFull: Multi-symbiotic systems: functional implications of the coexistence of grass-endophyte and legume-rhizobia symbioses. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: García Parisi, Pablo A. – PersonEntity: Name: NameFull: Lattanzi, Fernando A. – PersonEntity: Name: NameFull: Grimoldi, Augustín A. – PersonEntity: Name: NameFull: Omacini, Marina IsPartOfRelationships: – BibEntity: Dates: – D: 01 M: 05 Text: May2015 Type: published Y: 2015 Identifiers: – Type: issn-print Value: 00301299 Numbering: – Type: volume Value: 124 – Type: issue Value: 5 Titles: – TitleFull: Oikos Type: main |
| ResultId | 1 |
