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

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

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.

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How to Cite
Sim, C. S. F., Cheow, Y. L., Ng, S. L. and Ting, A. S. Y. (2020) “Can metal-tolerant endophytic biocontrol agents promote plant-growth under metal stress?”, Acta Biologica Szegediensis, 63(2), pp. 169-179. Available at: http://abs.bibl.u-szeged.hu/index.php/abs/article/view/3089 (Accessed: 21October2020).
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