Can metal-tolerant endophytic biocontrol agents promote plant-growth under metal stress?

Carrie Siew Fang Sim, Yuen Lin Cheow, Si Ling Ng, Adeline Su Yien Ting

Research output: Contribution to journalArticleResearchpeer-review

1 Citation (Scopus)

Abstract

Five metal-tolerant endophytic isolates (Bipolaris sp. LF7, Diaporthe miriciae LF9, Trichoderma asperellum LF11, Phomopsis asparagi LF15, Saccharicola bicolor LF22), with known metal-tolerance attributes and biocontrol activities against Ganoderma boninense, were tested for growth-promoting activities independent of (in vitro) and associated with plants (height, weight, root mass and stem circumference) (in vivo). Results revealed that metal-tolerant endophytes did not significantly render benefit to host plants as plant growth was compromised by the presence of metals. Lower production of indole-acetic acid (0.74-21.77 μg mL-1), siderophores (8.82-90.26%), and deaminase activities of 1-aminocyclopropane carboxylic acid (3.00-69.2 μmol mg protein-1 hr-1) were observed.

Original languageEnglish
Pages (from-to)169-179
Number of pages11
JournalActa Biologica Szegediensis
Volume63
Issue number2
DOIs
Publication statusPublished - 2019

Keywords

  • 1-aminocyclopropane carboxylic acid
  • Deaminase
  • Growth parameterr
  • Indole-acetic acid
  • Phosphate solubilisation
  • Plant hormone
  • Siderophore

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