Nanoparticles alter the nature and strength of intraploidy and interploidy interactions in plants
Year: 2025
Type: article
Abstract: Engineered nanoparticles have profound impacts on organisms, yet there is limited understanding of how nanoparticle exposure shapes species interactions that are key for natural community dynamics. By growing plants of the same (intraploidy) and different ploidy levels (interploidy) of Fragaria in axenic microcosms, we examined the influence of nanoparticles on species interactions in polyploid and diploid plants. We found that, under copper oxide (CuO) nanoparticle exposure, polyploids experienced reduced competition when growing with polyploids (the effect of polyploids on polyploids, RII 8 x ,8 x ), and a shift towards facilitation when growing with diploids (the effect of diploids on polyploids, RII 8 x ,2 x ). This reduction in competitive interactions in polyploids, in line with the stress gradient hypothesis, was primarily caused by nanoscale effects, because the strength of competitive interactions (RII 8 x ,8 x and RII 8 x ,2 x ) remained relatively unchanged under CuO bulk particles compared to control conditions. In contrast, diploids experienced a shift from facilitation (RII 2 x ,2 x and RII 2 x ,8 x ) under control conditions to neutrality under CuO nanoparticles, with a similar reduction in facilitation observed with both nanoparticles and bulk particles. These findings underscore ploidy specific interaction dynamics and the need of considering species interactions when predicting organismal responses to nanoparticle pollution in ecological communities.
Source: Scientific Reports
Authors: Elizabeth A. Esser, Jiaqi Tan, Na Wei
Language: English
Subfield: Nature and Landscape Conservation
Field: Environmental Science
Domain: Physical Sciences
Open Access status: gold
Estimated APC paid: $2,690
Funder: Chinese Academy of Sciences
OpenAlex ID: W4409457580