Intraspecific competition hinders drought recovery in a resident but not in its range-expanding congener plant independent of mycorrhizal symbiosis

Sanders, Shareen K. D.; Formenti, Ludovico; Fahrni, Micha; Thakur, Madhav P. (2024). Intraspecific competition hinders drought recovery in a resident but not in its range-expanding congener plant independent of mycorrhizal symbiosis. Plant and Soil, pp. 1-16. Springer 10.1007/s11104-024-06485-1

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Sanders_et_al._2024_Intraspecific_competition_hinders_drought_recovery_in_a_resident_but_not_in_its_range-expanding_congener_plant_independent_of_mycorrhizal_symbiosis.pdf - Published Version
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Background and aims Understanding biotic interactions within plant populations and with their symbiotic partners is crucial for elucidating plant responses to drought. While many studies have highlighted the importance of intraspecific plant or mutualistic fungal interactions in predicting drought responses, we know little about the combined effects of these two interactions
on the recovery of plants after drought.
Methods We conducted an experiment to study the recovery after an extreme drought event of a native European plant species (Centaurea jacea) and its range-expanding congener (Centaurea stoebe), across a gradient of plant density and in association with an AM fungal species (Rhizophagus irregularis).
Results Our results showed strong intraspecific competition in C. jacea, which constrained their postdrought recovery. We further found that AM fungi constrained root biomass recovery of C. jacea after drought under high intraspecific competition. The post-drought recovery in C. stoebe was high potentially due to its greater plasticity in the root diameter under drought conditions.
Conclusion Strong intraspecific competition can constrain recovery in plants like C. jacea with lesser
root trait plasticity after drought, independent of mycorrhizal symbiosis.

Item Type:

Journal Article (Original Article)

Division/Institute:

08 Faculty of Science > Department of Biology > Institute of Ecology and Evolution (IEE) > Terrestrial Ecology
08 Faculty of Science > Department of Biology > Institute of Ecology and Evolution (IEE)

UniBE Contributor:

Sanders, Shareen Kira Desiree, Formenti, Ludovico, Fahrni, Micha Yanik, Thakur, Madhav Prakash

Subjects:

500 Science > 570 Life sciences; biology
500 Science > 590 Animals (Zoology)
500 Science > 580 Plants (Botany)

ISSN:

0032-079X

Publisher:

Springer

Language:

English

Submitter:

Susanne Holenstein

Date Deposited:

09 Feb 2024 14:25

Last Modified:

09 Feb 2024 14:25

Publisher DOI:

10.1007/s11104-024-06485-1

Uncontrolled Keywords:

Density-dependent effects · Arbuscular mycorrhizal fungi · Range-expanding plants · Plant recovery · Root traits · Extreme abiotic stress

BORIS DOI:

10.48350/192719

URI:

https://boris.unibe.ch/id/eprint/192719

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