Enhancement of mangrove growth performance using fish emulsion and halotolerant plant growth-promoting actinobacteria for sustainable management in the UAE

Al Anoud A. Alshamsi, Mohamed S. Sheteiwy, Synan F. AbuQamar, Khaled A. El-Tarabily

Research output: Contribution to journalArticlepeer-review

Abstract

The combination of fish emulsion (FE) and the actinobacterial isolate, Streptomyces griseorubens UAE1 (Sg) capable of producing plant growth regulators (PGRs) and 1-aminocyclopropane-1-carboxylic acid (ACC) deaminase, was evaluated on mangrove (Avicennia marina) in the United Arab Emirates. Under greenhouse and field conditions, sediments amended with the biostimulant FE effectively enhanced mangrove growth compared to those inoculated with Sg only. Plant growth promotion by Sg was more pronounced in the presence of FE (+FE/+Sg) than in individual applications. Our data showed that Sg appeared to use FE as a source of nutrients and precursors for plant growth promotion. Thus, in planta PGR levels following the combined +FE/+Sg were significantly induced. This is the first report in the field of marine agriculture that uses FE as a nutrient base for soil microorganisms to promote mangrove growth. This study will support mangrove restoration along the Arabian Gulf coastline as a nature-based solution to changing climate and economic activities.

Original languageEnglish
Article number115916
JournalMarine Pollution Bulletin
Volume199
DOIs
Publication statusPublished - Feb 2024

Keywords

  • Actinobacteria
  • Mangrove
  • Plant growth regulators
  • Rhizosphere
  • Salinity
  • Seawater irrigation

ASJC Scopus subject areas

  • Oceanography
  • Aquatic Science
  • Pollution

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