Chlorophyll fluorescence characteristics and H2O2 contents of Chinese tallow tree are dependent on population origin, nutrients and salinity

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dc.citation.articleNumberplae024en_US
dc.citation.issueNumber3en_US
dc.citation.journalTitleAoB PLANTSen_US
dc.citation.volumeNumber16en_US
dc.contributor.authorHe, Mengyueen_US
dc.contributor.authorGe, Lihongen_US
dc.contributor.authorHui, Xueen_US
dc.contributor.authorLi, Wenraoen_US
dc.contributor.authorDing, Jianqingen_US
dc.contributor.authorSiemann, Evanen_US
dc.date.accessioned2024-08-02T13:32:10Zen_US
dc.date.available2024-08-02T13:32:10Zen_US
dc.date.issued2024en_US
dc.description.abstractPlants from invasive populations often have higher growth rates than conspecifics from native populations due to better environmental adaptability. However, the roles of improved chlorophyll fluorescence or antioxidant defenses in helping them to grow better under adverse situations are insufficient, even though this is a key physiological question for elucidating mechanisms of plant invasion. Here, we conducted experiments with eight native (China) and eight introduced (USA) populations of Chinese tallow tree (Triadica sebifera). We tested how salinity, nutrients (overall amount or N:P in two separate experiments) and their interaction affected T. sebifera aboveground biomass, leaf area, chlorophyll fluorescence and antioxidant defenses. Plants from introduced populations were larger than those from native populations, but salinity and nutrient shortage (low nutrients or high N:P) reduced this advantage, possibly reflecting differences in chlorophyll fluorescence based on their higher PSII maximum photochemical efficiency (Fv/Fm) and PSI maximum photo-oxidizable P700 in higher nutrient conditions. Native population plants had lower Fv/Fm with saline. Except in high nutrients/N:P with salinity, introduced population plants had lower electron transfer rate and photochemical quantum yield. There were no differences in antioxidant defenses between introduced and native populations except accumulation of hydrogen peroxide (H2O2), which was lower for introduced populations. Low nutrients and higher N:P or salinity increased total antioxidant capacity and H2O2. Our results indicate that nutrients and salinity induce differences in H2O2 contents and chlorophyll fluorescence characteristics between introduced and native populations of an invasive plant, illuminating adaptive mechanisms using photosynthetic physiological descriptors in order to predict invasions.en_US
dc.identifier.citationHe, M., Ge, L., Hui, X., Li, W., Ding, J., & Siemann, E. (2024). Chlorophyll fluorescence characteristics and H2O2 contents of Chinese tallow tree are dependent on population origin, nutrients and salinity. AoB PLANTS, 16(3), plae024. https://doi.org/10.1093/aobpla/plae024en_US
dc.identifier.digitalplae024en_US
dc.identifier.doihttps://doi.org/10.1093/aobpla/plae024en_US
dc.identifier.urihttps://hdl.handle.net/1911/117578en_US
dc.language.isoengen_US
dc.publisherOxford University Pressen_US
dc.rightsExcept where otherwise noted, this work is licensed under a Creative Commons Attribution (CC BY) license.  Permission to reuse, publish, or reproduce the work beyond the terms of the license or beyond the bounds of fair use or other exemptions to copyright law must be obtained from the copyright holder.en_US
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/en_US
dc.titleChlorophyll fluorescence characteristics and H2O2 contents of Chinese tallow tree are dependent on population origin, nutrients and salinityen_US
dc.typeJournal articleen_US
dc.type.dcmiTexten_US
dc.type.publicationpublisher versionen_US
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