Markus K. Zaplata, Sabine Schümberg, Giora J. Kidron, Jessica Ramm, Maik Veste
{"title":"以蓝藻为主的生物土壤结壳对幼苗萌发和命运的影响:原位实验","authors":"Markus K. Zaplata, Sabine Schümberg, Giora J. Kidron, Jessica Ramm, Maik Veste","doi":"10.1007/s11104-024-06869-3","DOIUrl":null,"url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Background and aims</h3><p>Biological soil crusts (BSCs) co-occur with vascular plants in many ecosystems. Nevertheless, little is known regarding the interaction among BSCs and vascular plants, and no standard methods exist aiming to evaluate BSC–plant interactions. While some reports emphasized the inhibition effect of BSCs on germination, others reported the opposite or did not find any differences between germination under crusted and non-crusted conditions. Contradictory findings were also reported regarding the BSC effects on vascular plants after germination, with some reports claiming that BSCs promote growth, while others claim the opposite.</p><h3 data-test=\"abstract-sub-heading\">Methods</h3><p>By a seed addition experiment (using light and heavy seeds of three species belonging to the Fabaceae family) in an early-successional system in Germany, we tested in situ the emergence of seedlings under variable surface conditions (cyanobacterial crust, disturbed and removed crust), and quantified crust-plant interactions (survival, flowering) during and following seedling emergence.</p><h3 data-test=\"abstract-sub-heading\">Results</h3><p>In comparison to an average of 8% of the light <i>Lotus corniculatus</i> and 20% of the light <i>Ornithopus sativus</i> that emerged through the cyanobacterial BSC, 76% of the heavy <i>Glycine max</i> emerged. Once emerged, the crust did not significantly affect the survival, growth, biomass, or flowering of <i>G. max</i>, whereas many of the seedlings from lightweight seeds dried up soon after emergence. The thickness of the cyanobacterial biocrust had no influence on Fabaceae emergence.</p><h3 data-test=\"abstract-sub-heading\">Conclusion</h3><p>The cyanobacterial BSC acted as a filter that hindered the emergence of the lightweight seeds.</p>","PeriodicalId":20223,"journal":{"name":"Plant and Soil","volume":null,"pages":null},"PeriodicalIF":3.9000,"publicationDate":"2024-08-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Impacts of cyanobacteria-dominated biological soil crusts on seedling emergence and fate: an in situ experiment\",\"authors\":\"Markus K. Zaplata, Sabine Schümberg, Giora J. Kidron, Jessica Ramm, Maik Veste\",\"doi\":\"10.1007/s11104-024-06869-3\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<h3 data-test=\\\"abstract-sub-heading\\\">Background and aims</h3><p>Biological soil crusts (BSCs) co-occur with vascular plants in many ecosystems. Nevertheless, little is known regarding the interaction among BSCs and vascular plants, and no standard methods exist aiming to evaluate BSC–plant interactions. While some reports emphasized the inhibition effect of BSCs on germination, others reported the opposite or did not find any differences between germination under crusted and non-crusted conditions. Contradictory findings were also reported regarding the BSC effects on vascular plants after germination, with some reports claiming that BSCs promote growth, while others claim the opposite.</p><h3 data-test=\\\"abstract-sub-heading\\\">Methods</h3><p>By a seed addition experiment (using light and heavy seeds of three species belonging to the Fabaceae family) in an early-successional system in Germany, we tested in situ the emergence of seedlings under variable surface conditions (cyanobacterial crust, disturbed and removed crust), and quantified crust-plant interactions (survival, flowering) during and following seedling emergence.</p><h3 data-test=\\\"abstract-sub-heading\\\">Results</h3><p>In comparison to an average of 8% of the light <i>Lotus corniculatus</i> and 20% of the light <i>Ornithopus sativus</i> that emerged through the cyanobacterial BSC, 76% of the heavy <i>Glycine max</i> emerged. 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Impacts of cyanobacteria-dominated biological soil crusts on seedling emergence and fate: an in situ experiment
Background and aims
Biological soil crusts (BSCs) co-occur with vascular plants in many ecosystems. Nevertheless, little is known regarding the interaction among BSCs and vascular plants, and no standard methods exist aiming to evaluate BSC–plant interactions. While some reports emphasized the inhibition effect of BSCs on germination, others reported the opposite or did not find any differences between germination under crusted and non-crusted conditions. Contradictory findings were also reported regarding the BSC effects on vascular plants after germination, with some reports claiming that BSCs promote growth, while others claim the opposite.
Methods
By a seed addition experiment (using light and heavy seeds of three species belonging to the Fabaceae family) in an early-successional system in Germany, we tested in situ the emergence of seedlings under variable surface conditions (cyanobacterial crust, disturbed and removed crust), and quantified crust-plant interactions (survival, flowering) during and following seedling emergence.
Results
In comparison to an average of 8% of the light Lotus corniculatus and 20% of the light Ornithopus sativus that emerged through the cyanobacterial BSC, 76% of the heavy Glycine max emerged. Once emerged, the crust did not significantly affect the survival, growth, biomass, or flowering of G. max, whereas many of the seedlings from lightweight seeds dried up soon after emergence. The thickness of the cyanobacterial biocrust had no influence on Fabaceae emergence.
Conclusion
The cyanobacterial BSC acted as a filter that hindered the emergence of the lightweight seeds.
期刊介绍:
Plant and Soil publishes original papers and review articles exploring the interface of plant biology and soil sciences, and that enhance our mechanistic understanding of plant-soil interactions. We focus on the interface of plant biology and soil sciences, and seek those manuscripts with a strong mechanistic component which develop and test hypotheses aimed at understanding underlying mechanisms of plant-soil interactions. Manuscripts can include both fundamental and applied aspects of mineral nutrition, plant water relations, symbiotic and pathogenic plant-microbe interactions, root anatomy and morphology, soil biology, ecology, agrochemistry and agrophysics, as long as they are hypothesis-driven and enhance our mechanistic understanding. Articles including a major molecular or modelling component also fall within the scope of the journal. All contributions appear in the English language, with consistent spelling, using either American or British English.