The Open Plant Science Journal


ISSN: 1874-2947 ― Volume 11, 2019

In Vitro Antifungal Activity of Different Plant Hormones on the Growth and Toxicity of Nigrospora Spp. on Date Palm (Phoenix dactylifera L.)

Mohammed H. Abass*
Date Palm Research Centre, Basra University, Basra, Iraq



The profound negative impact of chemical fungicides on human and animal health, as well as, the whole agroecosystem encouraged tremendous efforts to find alternative approaches to suppress the growth of plant pathogens.


Recently, plant hormones have been considered to reduce fungal severity. Five different plant hormones namely 2, 4-D (2,4-Dichlorophenoxyacetic acid); BAP (6- Benzylaminopurine); Dicamba (3,6- Dichloro-2-methoxybenzoic acid, 3,6-Dichloro-o-anisic acid); IAA (Indole-2-acetic acid) and SA (Salicylic acid) were selected to examine their antifungal activity against the growth of two species of date palm fungal pathogen Nigrospora spp.


Results showed that SA at 50 ppm was sufficient to inhibit the mycelium growth of N. oryzae completely, while with N. sphaerica; the treatments of 2, 4-D (40-50 ppm) and SA (40-50 ppm) led to similar complete inhibition results of mycelium growth. The data of BAP and IAA indicated no toxic effect toward mycelium growth of the pathogens. Similar trends of results have been obtained for phytotoxicity bioassay which performed on detached date palm leaves, 2, 4-D and SA at 30 ppm led to a complete inhibition for the production of toxins in the culture of N. oryzae and N. sphaerica.


58% significant reduction in toxin production was obtained with Dicamba 30 ppm. Results presented here reveal the antifungal activity of different plant hormones in in vitro experiments, and are important to examine their efficiency in farther field studies on date palm.

Keywords: Antifungal, Date palm, Fungi, Nigrospora, Phytohormones, Phytotoxicity.

Article Information

Identifiers and Pagination:

Year: 2017
Volume: 10
First Page: 10
Last Page: 20
Publisher Id: TOPSJ-10-10
DOI: 10.2174/1874294701710010010

Article History:

Received Date: 17/01/2017
Revision Received Date: 28/02/2017
Acceptance Date: 15/03/2017
Electronic publication date: 29/05/2017
Collection year: 2017

© 2017 Mohammed H Abass.

open-access license: This is an open access article distributed under the terms of the Creative Commons Attribution 4.0 International Public License (CC-BY 4.0), a copy of which is available at: This license permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

* Address correspondence to this authors at the Date Palm Research Centre, Basra University, Basra, Iraq; Tel: +964 7706999720; E-mail: dr.mha24

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