Hormone-like activity of soil borne fungi isolated from onion field
Date
2019
Authors
Liezl M. Pagay
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Abstract
The present study evaluated the potential hormone-like activity of soil borne fungi isolated from onion field namely: Aspergilus niger, Scopulariopsis brevicaulis and Penicillium citrimum. Crude and ethanol extracts of the aforementioned fungal soil borne were used to test their influence in root initiation, growth of decapitated coleoptile, cleoptile elongation, secondary leaf elongation and leaf senescence of rice and corn.
P. citrinum crude extract showed cytokinin and auxin-like activity which influenced the roof formation while S. brevicaulis crude extract produced cytokinin-like activity which increased the length of rice and corn. For the growth of decaptitated coleoptile, gibberellin-like activity (A. niger and P. citrinum ethanol extract) and auxin like activity (P. citrinum and S. brevicaulis crude extract) induced the growth of the decaptitated coleoptile. Moreover gibberellin-like activity by A. niger, P. citrinum and S. brevicaulis crude extract caused lengthening of secondary leaf of rice. Finally for the leaf senescence, leaves treated with A. niger crude and ethanol extracts did not show any signs of leaf senescene, but showed signs of black rot.