Effect of bioaugmentation on the growth and rhizosphere microbiome assembly of hydroponic cultures of Mentha aquatica

Mārtiņs Kalniņš, Una Andersone-Ozola, Dita Gudrā, Alise Sieriņa, Dāvids Fridmanis, Gederts Ievinsh, Olga Muter (Corresponding Author)

Research output: Contribution to journalArticlepeer-review

8 Citations (Scopus)

Abstract

The aim of this study was to compare the growth of Mentha aquatica var. aquatica (MAA) and Mentha aquatica var. litoralis (MAL) as well as the structure of the rhizosphere microbial community after the 47-day greenhouse hydroponic experiment in the presence of two added bacterial consortia of different origin and composition (M1 and M2). The structure of the bacterial communities attached to expanded clay pellets, at the phylum level was represented mostly by Proteobacteria (from 80.21% in [MAA-M1] to 90.89% in [MAL]). Other phyla, which appeared above 1%, were as follows: Bacteroidetes, Actinobacteria, Planctomycetes, Firmicutes, and Verrucomicrobia). Bioaugmentation provided significant (p < 0.05) stimulation for the growth of [MAL] and [MAA] after 47 days of vegetation, with [MAL] showing the more pronouncing effect. The dry shoot mass in [MAL-M1] and [MAL-M2] was 28% and 26% higher than in [MAL], respectively. In turn, the dry root mass was 44% and 35% higher than in [MAL], respectively. The enzyme activity of the biofilm showed a marked increase at the beginning of the experiment followed by a considerable decrease up to day 47 day the experiment.

Original languageEnglish
Article number100107
JournalEcological Genetics and Genomics
Volume22
DOIs
Publication statusPublished - Mar 2022
Externally publishedYes

Keywords*

  • Biofilm metagenome
  • Expanded ceramic pellets
  • Fluorescein diacetate hydrolysis
  • Hydroponics
  • Indole-3-acetic acid
  • Mentha aquatica

Field of Science*

  • 1.5 Earth and related Environmental sciences
  • 1.6 Biological sciences
  • 1.7 Other natural sciences
  • 3.1 Basic medicine

Publication Type*

  • 1.1. Scientific article indexed in Web of Science and/or Scopus database

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