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The Aromatic Plant Clary Sage Shaped Bacterial Communities in the Roots and in the Trace Element-Contaminated Soil More Than Mycorrhizal Inoculation – A Two-Year Monitoring Field Trial

Type de document
journalArticle
Langue source
Anglais
Titre français
Titre anglais
The Aromatic Plant Clary Sage Shaped Bacterial Communities in the Roots and in the Trace Element-Contaminated Soil More Than Mycorrhizal Inoculation – A Two-Year Monitoring Field Trial
Auteur(s)
  • RAVEAU Robin
  • FONTAINE Joël
  • HIJRI Mohamed
  • LOUNÈS-HADJ SAHRAOUI Anissa
Editeur(s)
Autre(s)
Id
VG8CGABI
Version
2772
Url zotero
https://www.zotero.org/groups/2567444/items/VG8CGABI
Date ajout
7 janvier 2021 14:14
Date modification
7 janvier 2021 14:14
Résumé anglais
To cope with soil contamination by trace elements (TE), phytomanagement has attracted much attention as being an eco-friendly and cost-effective green approach. In this context, aromatic plants could represent a good option not only to immobilize TE, but also to use their biomass to extract essential oils, resulting in high added-value products suitable for non-food valorisation. However, the influence of aromatic plants cultivation on the bacterial community structure and functioning in the rhizosphere microbiota remains unknown. Thus, the present study aims at determining in TE-aged contaminated soil (Pb - 394 ppm, Zn - 443 ppm and Cd - 7ppm, respectively 11, 6 and 17 times higher than the ordinary amounts in regional agricultural soils) the effects of perennial clary sage (Salvia sclarea L.) cultivation, during two successive years of growth and inoculated with arbuscular mycorrhizal fungi, on rhizosphere bacterial diversity and community structure. Illumina MiSeq amplicon sequencing targeting bacterial 16S rRNA gene was used to assess bacterial diversity and community structure changes. Bioinformatic analysis of sequencing datasets resulted in 4691 and 2728 bacterial Amplicon Sequence Variants (ASV) in soil and root biotopes, respectively. Our findings have shown that the cultivation of clary sage displayed a significant year-to-year effect, on both bacterial richness and community structures. We found that the abundance of plant-growth promoting rhizobacteria (PGPR) significantly increased in roots during the second growing season. However, we didn’t observe any significant effect of mycorrhizal inoculation neither on bacterial diversity nor on community structure. Our study brings new evidence in TE-contaminated areas of the effect of a vegetation cover with clary sage cultivation on the microbial soil functioning.
Note
None
CRAW tags
  • AB - Non-spécifique
  • FREDO biologie et travail du sol
  • GEO France
  • GEO Maroc
  • bacterial communities
WEB tags
  • phytomanagement
  • salvia sclarea
  • trace elements-contaminated soils
  • aromatic plant
  • essential oils
  • microbiota
Titre de la publication
Frontiers in Microbiology
Volume
11
Date caractères
2020
Date publication
1 janvier 2020
Doi
10.3389/fmicb.2020.586050 Le DOI est une URL unique de référencement d'une publication. Il est donc plus fiable et permanent qu'une URL classique
Issn
1664-302X L’ISSN est un code de 8 chiffres servant à identifier les journaux, revues, magazines, périodiques de toute nature et sur tous supports, papier comme électronique.
Url publication
https://www.frontiersin.org/articles/10.3389/fmicb.2020.586050/full