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The impact of salinity on mycorrhizal colonization of a rare legume, Galactia smallii, in South Florida pine rocklands

OBJECTIVES: The success of restoration plantings depends on the capacity of transplanted individuals or seeds to establish and reproduce. It is increasingly recognized that restoration success depends quite heavily upon biotic interactions and belowground processes. Under stressful abiotic condition...

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Autores principales: Scharnagl, Klara, Sanchez, Vanessa, von Wettberg, Eric
Formato: Online Artículo Texto
Lenguaje:English
Publicado: BioMed Central 2018
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5749014/
https://www.ncbi.nlm.nih.gov/pubmed/29291742
http://dx.doi.org/10.1186/s13104-017-3105-8
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author Scharnagl, Klara
Sanchez, Vanessa
von Wettberg, Eric
author_facet Scharnagl, Klara
Sanchez, Vanessa
von Wettberg, Eric
author_sort Scharnagl, Klara
collection PubMed
description OBJECTIVES: The success of restoration plantings depends on the capacity of transplanted individuals or seeds to establish and reproduce. It is increasingly recognized that restoration success depends quite heavily upon biotic interactions and belowground processes. Under stressful abiotic conditions, such as soils salinized by storm surge and sea level rise, symbiotic interactions with soil microbes such as mycorrhizae may be critically important. In this study, we investigate the impact of salinity on percent colonization of roots by arbuscular mycorrhizal fungi, in addition to the impacts of this colonization on plant fitness under saline conditions. Fifty Galactia smallii plants from an ex situ collection were subjected to a salinity treatment for 6 weeks, and 50 plants were untreated. Plants were harvested and assessed for percent colonization by arbuscular mycorrhizal fungi, nodule number, shoot and root dry biomass, and micronutrient content. RESULTS: Colonization by arbuscular mycorrhizae was higher in plants in the salinity treatment than in untreated plants; plants in the salinity treatment were also found to have a lower root:shoot ratio, and higher phosphorus and nitrogen levels. These results support the importance of arbuscular mycorrhizal fungi in restoration efforts of endangered plants in fragmented and threatened ecosystems, such as pine rocklands.
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spelling pubmed-57490142018-01-05 The impact of salinity on mycorrhizal colonization of a rare legume, Galactia smallii, in South Florida pine rocklands Scharnagl, Klara Sanchez, Vanessa von Wettberg, Eric BMC Res Notes Research Note OBJECTIVES: The success of restoration plantings depends on the capacity of transplanted individuals or seeds to establish and reproduce. It is increasingly recognized that restoration success depends quite heavily upon biotic interactions and belowground processes. Under stressful abiotic conditions, such as soils salinized by storm surge and sea level rise, symbiotic interactions with soil microbes such as mycorrhizae may be critically important. In this study, we investigate the impact of salinity on percent colonization of roots by arbuscular mycorrhizal fungi, in addition to the impacts of this colonization on plant fitness under saline conditions. Fifty Galactia smallii plants from an ex situ collection were subjected to a salinity treatment for 6 weeks, and 50 plants were untreated. Plants were harvested and assessed for percent colonization by arbuscular mycorrhizal fungi, nodule number, shoot and root dry biomass, and micronutrient content. RESULTS: Colonization by arbuscular mycorrhizae was higher in plants in the salinity treatment than in untreated plants; plants in the salinity treatment were also found to have a lower root:shoot ratio, and higher phosphorus and nitrogen levels. These results support the importance of arbuscular mycorrhizal fungi in restoration efforts of endangered plants in fragmented and threatened ecosystems, such as pine rocklands. BioMed Central 2018-01-02 /pmc/articles/PMC5749014/ /pubmed/29291742 http://dx.doi.org/10.1186/s13104-017-3105-8 Text en © The Author(s) 2017 Open AccessThis article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated.
spellingShingle Research Note
Scharnagl, Klara
Sanchez, Vanessa
von Wettberg, Eric
The impact of salinity on mycorrhizal colonization of a rare legume, Galactia smallii, in South Florida pine rocklands
title The impact of salinity on mycorrhizal colonization of a rare legume, Galactia smallii, in South Florida pine rocklands
title_full The impact of salinity on mycorrhizal colonization of a rare legume, Galactia smallii, in South Florida pine rocklands
title_fullStr The impact of salinity on mycorrhizal colonization of a rare legume, Galactia smallii, in South Florida pine rocklands
title_full_unstemmed The impact of salinity on mycorrhizal colonization of a rare legume, Galactia smallii, in South Florida pine rocklands
title_short The impact of salinity on mycorrhizal colonization of a rare legume, Galactia smallii, in South Florida pine rocklands
title_sort impact of salinity on mycorrhizal colonization of a rare legume, galactia smallii, in south florida pine rocklands
topic Research Note
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5749014/
https://www.ncbi.nlm.nih.gov/pubmed/29291742
http://dx.doi.org/10.1186/s13104-017-3105-8
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