Overcoming field barriers to restore dryland soils by cyanobacteria inoculation

Cyanobacteria inoculation to promote biocrust formation and improve soil properties has shown positive results in indoor studies, but limited success when applied under field conditions. Successful results of application of this technology in the field have been only found in desert sand dunes in Ch...

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Autores: Román, José Raúl, Chamizo, Sonia, Roncero-Ramos, Beatriz, Adessi, Alessandra, Philippis, Roberto D. De, Cantón, Yolanda
Tipo de recurso: artículo
Estado:Versión aceptada para publicación
Fecha de publicación:2021
País:España
Institución:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/413923
Acceso en línea:http://hdl.handle.net/10261/413923
Access Level:acceso abierto
Palabra clave:N-fixing cyanobacteria
Biocrusts
Restoration
Hardening
Habitat amelioration
Drylands
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network_name_str España
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dc.title.none.fl_str_mv Overcoming field barriers to restore dryland soils by cyanobacteria inoculation
title Overcoming field barriers to restore dryland soils by cyanobacteria inoculation
spellingShingle Overcoming field barriers to restore dryland soils by cyanobacteria inoculation
Román, José Raúl
N-fixing cyanobacteria
Biocrusts
Restoration
Hardening
Habitat amelioration
Drylands
title_short Overcoming field barriers to restore dryland soils by cyanobacteria inoculation
title_full Overcoming field barriers to restore dryland soils by cyanobacteria inoculation
title_fullStr Overcoming field barriers to restore dryland soils by cyanobacteria inoculation
title_full_unstemmed Overcoming field barriers to restore dryland soils by cyanobacteria inoculation
title_sort Overcoming field barriers to restore dryland soils by cyanobacteria inoculation
dc.creator.none.fl_str_mv Román, José Raúl
Chamizo, Sonia
Roncero-Ramos, Beatriz
Adessi, Alessandra
Philippis, Roberto D. De
Cantón, Yolanda
author Román, José Raúl
author_facet Román, José Raúl
Chamizo, Sonia
Roncero-Ramos, Beatriz
Adessi, Alessandra
Philippis, Roberto D. De
Cantón, Yolanda
author_role author
author2 Chamizo, Sonia
Roncero-Ramos, Beatriz
Adessi, Alessandra
Philippis, Roberto D. De
Cantón, Yolanda
author2_role author
author
author
author
author
dc.contributor.none.fl_str_mv Ministerio de Economía y Competitividad (España)
European Commission
Ministerio de Ciencia, Innovación y Universidades (España)
Agencia Estatal de Investigación (España)
Junta de Andalucía
European Commission
Ministerio de Educación, Cultura y Deporte (España)
Université de Liège
Universidad de Almería
dc.subject.none.fl_str_mv N-fixing cyanobacteria
Biocrusts
Restoration
Hardening
Habitat amelioration
Drylands
topic N-fixing cyanobacteria
Biocrusts
Restoration
Hardening
Habitat amelioration
Drylands
description Cyanobacteria inoculation to promote biocrust formation and improve soil properties has shown positive results in indoor studies, but limited success when applied under field conditions. Successful results of application of this technology in the field have been only found in desert sand dunes in China. Therefore, further development of this technique is necessary to extend its applicability to other soil types and regions. In this study, we inoculated a consortium of three N-fixing native cyanobacteria (Nostoc commune, Scytonema hyalinum and Tolypothrix distorta) on degraded soils from three semiarid study sites in south-eastern Spain with differing soil properties and soil development. After two years, chlorophyll a spectral absorption and albedo in inoculated and control plots were similar. Consequently, a second experiment was conducted to test the effectiveness of progressive cyanobacterial preacclimation before inoculation as well as the use of habitat amelioration techniques, consisting of covering the inoculated soils with a vegetal fiber mesh or a plastic grid, to improve cyanobacteria performance. Our results showed that: 1) hardening these cyanobacterial strains did not enhance their colonization capability, and 2) covering inoculated soils with a vegetal mesh did promote soil colonization by cyanobacteria, as shown by higher chlorophyll a soil content and Chla spectral absorption and lower albedo than in the uncovered plots. Moreover, it promoted the presence of more condensed, tightly-bound exopolysaccharides (EPS) and higher molecular weight molecules in the more soluble loosely-bound EPS fraction, both of which could be involved in the improvement of soil aggregation. Finally, higher abundance of xylose and galactose was also found in this treatment, likely indicating a greater development of the induced biocrusts. The results of this study show that direct soil inoculation with cyanobacteria, whether subjected to desiccation hardening or not, did not promote the artificial formation of biocrusts in the field. However, more positive results were found when the inoculated soils were covered with a vegetal mesh to help cyanobacteria cope with abiotic stress and soil erosion. Therefore, developing diversified efficient habitat amelioration strategies might be key in the successful application of this restoration technique in the field.
publishDate 2021
dc.date.none.fl_str_mv 2021
2026
2026
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dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/413923
url http://hdl.handle.net/10261/413923
dc.language.none.fl_str_mv Inglés
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spelling Overcoming field barriers to restore dryland soils by cyanobacteria inoculationRomán, José RaúlChamizo, SoniaRoncero-Ramos, BeatrizAdessi, AlessandraPhilippis, Roberto D. DeCantón, YolandaN-fixing cyanobacteriaBiocrustsRestorationHardeningHabitat ameliorationDrylandsCyanobacteria inoculation to promote biocrust formation and improve soil properties has shown positive results in indoor studies, but limited success when applied under field conditions. Successful results of application of this technology in the field have been only found in desert sand dunes in China. Therefore, further development of this technique is necessary to extend its applicability to other soil types and regions. In this study, we inoculated a consortium of three N-fixing native cyanobacteria (Nostoc commune, Scytonema hyalinum and Tolypothrix distorta) on degraded soils from three semiarid study sites in south-eastern Spain with differing soil properties and soil development. After two years, chlorophyll a spectral absorption and albedo in inoculated and control plots were similar. Consequently, a second experiment was conducted to test the effectiveness of progressive cyanobacterial preacclimation before inoculation as well as the use of habitat amelioration techniques, consisting of covering the inoculated soils with a vegetal fiber mesh or a plastic grid, to improve cyanobacteria performance. Our results showed that: 1) hardening these cyanobacterial strains did not enhance their colonization capability, and 2) covering inoculated soils with a vegetal mesh did promote soil colonization by cyanobacteria, as shown by higher chlorophyll a soil content and Chla spectral absorption and lower albedo than in the uncovered plots. Moreover, it promoted the presence of more condensed, tightly-bound exopolysaccharides (EPS) and higher molecular weight molecules in the more soluble loosely-bound EPS fraction, both of which could be involved in the improvement of soil aggregation. Finally, higher abundance of xylose and galactose was also found in this treatment, likely indicating a greater development of the induced biocrusts. The results of this study show that direct soil inoculation with cyanobacteria, whether subjected to desiccation hardening or not, did not promote the artificial formation of biocrusts in the field. However, more positive results were found when the inoculated soils were covered with a vegetal mesh to help cyanobacteria cope with abiotic stress and soil erosion. Therefore, developing diversified efficient habitat amelioration strategies might be key in the successful application of this restoration technique in the field.This research was supported by the following projects: RESUCI (CGL2014-59946-R) and REBIOARID (RTI2018-101921-B-I00) projects, funded by the FEDER/Science and Innovation Ministry-National Research Agency through the Spanish National Plan for Research and the European Union including European Funds for Regional Development, and the RH2O-ARID (P18-RT-5130) funded by Junta de Andalucia and the European Union including European Funds for Regional Development. This work has also been financed by the SABANA-project of the European Union's Horizon 2020 Research and Innovation program (Grant Agreement No. 727874). J.R.R. was funded by the FPU predoctoral fellowship from the Educational, Culture and Sports Ministry of Spain (FPU14/05806). BRR was supported by the University of Liège under Special Funds for Research, IPD-STEMA Programme, S.C. was supported by the HIPATIA-UAL postdoctoral fellowship funded by the University of Almería.Peer reviewedElsevierMinisterio de Economía y Competitividad (España)European CommissionMinisterio de Ciencia, Innovación y Universidades (España)Agencia Estatal de Investigación (España)Junta de AndalucíaEuropean CommissionMinisterio de Educación, Cultura y Deporte (España)Université de LiègeUniversidad de Almería202620262021info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501Postprintinfo:eu-repo/semantics/acceptedVersionapplication/pdfhttp://hdl.handle.net/10261/413923reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Inglés#PLACEHOLDER_PARENT_METADATA_VALUE##PLACEHOLDER_PARENT_METADATA_VALUE##PLACEHOLDER_PARENT_METADATA_VALUE#info:eu-repo/grantAgreement/MINECO//CGL2014-59946-Rinfo:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020/RTI2018-101921-B-I00info:eu-repo/grantAgreement/EC/H2020/727874https://doi.org/10.1016/j.still.2020.104799Noinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/4139232026-05-22T06:33:51Z
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