Aboveground herbivory suppresses the arbuscular mycorrhizal symbiosis, reducing plant phosphorus uptake
Article
Article Title | Aboveground herbivory suppresses the arbuscular mycorrhizal symbiosis, reducing plant phosphorus uptake |
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ERA Journal ID | 5246 |
Article Category | Article |
Authors | |
Author | Frew, Adam |
Journal Title | Applied Soil Ecology |
Journal Citation | 168 |
Article Number | 104133 |
Number of Pages | 5 |
Year | 2021 |
Publisher | Elsevier |
Place of Publication | Netherlands |
ISSN | 0929-1393 |
1873-0272 | |
Digital Object Identifier (DOI) | https://doi.org/10.1016/j.apsoil.2021.104133 |
Web Address (URL) | https://www.sciencedirect.com/science/article/pii/S0929139321002560 |
Abstract | Most terrestrial plants form associations with arbuscular mycorrhizal (AM) fungi, which are soil-dwelling microbial symbionts that provide plants with soil nutrients, while plants supply the fungi with carbon. The majority of these plants are also subject to herbivory from insects, thus tripartite interactions between insect herbivores, plants, and AM fungi are ubiquitous. This study assessed how aboveground herbivory from a generalist insect herbivore (Helicoverpa punctigera) affects the AM symbiosis in two C4 grass species (Bothriochloa macra and Dichanthium sericeum) and the consequences for host plant growth and nutrient uptake. Aboveground herbivory reduced root growth and carbon allocation belowground in both plant species, along with an associated reduction in arbuscular colonisation and phosphorus uptake. These findings suggest that, in accordance with the carbon-limitation hypothesis, herbivory can suppress the AM symbiosis by decreasing carbon belowground, potentially hindering AM fungal-enhanced nutrient acquisition from the soil. |
Keywords | Arbuscular mycorrhizal fungi; carbon-limitation hypothesis; herbivory; phosphorus; symbiosis |
ANZSRC Field of Research 2020 | 310302. Community ecology (excl. invasive species ecology) |
310308. Terrestrial ecology | |
Public Notes | Files associated with this item cannot be displayed due to copyright restrictions. |
Byline Affiliations | Centre for Crop Health |
Institution of Origin | University of Southern Queensland |
https://research.usq.edu.au/item/q6758/aboveground-herbivory-suppresses-the-arbuscular-mycorrhizal-symbiosis-reducing-plant-phosphorus-uptake
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