Endophytic bacterial diversity of avicennia marina helps to confer resistance against salinity stress in solanum lycopersicum

Amjad Ali, Raheem Shahzad, Abdul Latif Khan, Boshera A. Halo, Rashid Al-Yahyai, Ahmed Al-Harrasi, Ahmed Al-Rawahi, In Jung Lee

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

The current study aimed to explore the endophytic bacterial diversity of Avicennia marina and the potential roles of these endophytes in counteracting saline conditions in tomato plants. Molecular analysis revealed strains from Paenibacillus, Bacillus, Microbacterium, Citrobacter, Lysinibacillus, Halomonas, Virgibacillus, Exiguobacterium, and Vibrio. However, Bacillus pumilus AM11 and Exiguobacterium sp. AM25 showed significantly higher growth in saline media. In response to salinity stress, tomato plants treated with AM11 and AM25 showed significantly higher (∼15–23%) biomass, photosynthetic rate and pigment accumulation compared to controls. Salinity-exposed plants had significantly reduced growth and increased (three-fold) lipid peroxidation, whilst glutathione, catalase, and peroxidase activities were significantly reduced. In contrast, AM11, AM25, and methionine improved these physiochemical attributes. The study concludes that the application of bacterial endophytes from plants growing in saline conditions can offer other plants similar stress-resistance potential. Such halophytic bacterial strains can be used to improve plant growth in saline conditions.

Original languageEnglish
Pages (from-to)312-322
Number of pages11
JournalJournal of Plant Interactions
Volume12
Issue number1
DOIs
Publication statusPublished - Jan 1 2017

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Keywords

  • Antioxidants
  • Avicennia marina
  • Endophyte
  • Methionine
  • Plant microbe interaction
  • Salinity

ASJC Scopus subject areas

  • Ecology, Evolution, Behavior and Systematics
  • Plant Science

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