Efficacy of Bacillus subtilis (Ehrenberg1835) Cohn1872, in suppressing Fusarium oxysporum Schlecht. emend. Snyder & Hansen, the causal agent of root rot of date palm offshoots (Phoenix dactylifera L.) in Iraq
Date palm root rot disease is one of the most important diseases of date palms and offshoots. It is caused by many soil-borne pathogenic fungi. Pathogenicity assays of the isolated fungi showed that the major causative agents of root rot disease in date palm plantlets were Fusarium oxysporum Schlech...
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University of Ljubljana Press (Založba Univerze v Ljubljani)
2022-10-01
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| Series: | Acta Agriculturae Slovenica |
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| Online Access: | https://journals.uni-lj.si/aas/article/view/13108 |
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| author | Naji Salim JASSIM Muntaha Abd. ATI |
| author_facet | Naji Salim JASSIM Muntaha Abd. ATI |
| author_sort | Naji Salim JASSIM |
| collection | DOAJ |
| description | Date palm root rot disease is one of the most important diseases of date palms and offshoots. It is caused by many soil-borne pathogenic fungi. Pathogenicity assays of the isolated fungi showed that the major causative agents of root rot disease in date palm plantlets were Fusarium oxysporum Schlecht. emend. Snyder & Hansen, F. proliferatum (Matsush.) Nirenberg ex Gerlach & Nirenberg S1, F. proliferatum S2, Gibberella fujikuroi (Sawada) Wollenw., and Rhizoctonia solani J.G. Kühn. The most virulent fungus was F. oxysporum with a severity index of 82.16 % of root rot, while R. solani was the least harmful with a disease severity rate of 12.42 %. In laboratory tests, Bacillus subtilis reduced the radial mycelial growth of F. oxysporum on PDA medium by 86.6 %. The application of B. subtilis in combination with F. oxysporum substantially inhibited the severity of root rot disease relative to plantlets treated with only F. oxysporum. In addition, B. subtilis application in the presence or absence of F. oxysporum improved the plant physiology of plantlets, including total chlorophyll, total carotenoid, antioxidant enzyme levels (catalase and peroxidase), and total proline content. |
| format | Article |
| id | doaj-art-5a85aa2c15f8459882afa9d64cc9a753 |
| institution | DOAJ |
| issn | 1854-1941 |
| language | English |
| publishDate | 2022-10-01 |
| publisher | University of Ljubljana Press (Založba Univerze v Ljubljani) |
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| spelling | doaj-art-5a85aa2c15f8459882afa9d64cc9a7532025-08-20T02:58:54ZengUniversity of Ljubljana Press (Založba Univerze v Ljubljani)Acta Agriculturae Slovenica1854-19412022-10-01118311010.14720/aas.2022.118.3.264319500Efficacy of Bacillus subtilis (Ehrenberg1835) Cohn1872, in suppressing Fusarium oxysporum Schlecht. emend. Snyder & Hansen, the causal agent of root rot of date palm offshoots (Phoenix dactylifera L.) in IraqNaji Salim JASSIM0Muntaha Abd. ATI1lant pathology, Date Palm Research Center, University of Basrah, Basrah, Iraqlant pathology, Date Palm Research Center, University of Basrah, Basrah, IraqDate palm root rot disease is one of the most important diseases of date palms and offshoots. It is caused by many soil-borne pathogenic fungi. Pathogenicity assays of the isolated fungi showed that the major causative agents of root rot disease in date palm plantlets were Fusarium oxysporum Schlecht. emend. Snyder & Hansen, F. proliferatum (Matsush.) Nirenberg ex Gerlach & Nirenberg S1, F. proliferatum S2, Gibberella fujikuroi (Sawada) Wollenw., and Rhizoctonia solani J.G. Kühn. The most virulent fungus was F. oxysporum with a severity index of 82.16 % of root rot, while R. solani was the least harmful with a disease severity rate of 12.42 %. In laboratory tests, Bacillus subtilis reduced the radial mycelial growth of F. oxysporum on PDA medium by 86.6 %. The application of B. subtilis in combination with F. oxysporum substantially inhibited the severity of root rot disease relative to plantlets treated with only F. oxysporum. In addition, B. subtilis application in the presence or absence of F. oxysporum improved the plant physiology of plantlets, including total chlorophyll, total carotenoid, antioxidant enzyme levels (catalase and peroxidase), and total proline content.https://journals.uni-lj.si/aas/article/view/13108b. subtilisdate palmf. oxysporumplant physiology |
| spellingShingle | Naji Salim JASSIM Muntaha Abd. ATI Efficacy of Bacillus subtilis (Ehrenberg1835) Cohn1872, in suppressing Fusarium oxysporum Schlecht. emend. Snyder & Hansen, the causal agent of root rot of date palm offshoots (Phoenix dactylifera L.) in Iraq Acta Agriculturae Slovenica b. subtilis date palm f. oxysporum plant physiology |
| title | Efficacy of Bacillus subtilis (Ehrenberg1835) Cohn1872, in suppressing Fusarium oxysporum Schlecht. emend. Snyder & Hansen, the causal agent of root rot of date palm offshoots (Phoenix dactylifera L.) in Iraq |
| title_full | Efficacy of Bacillus subtilis (Ehrenberg1835) Cohn1872, in suppressing Fusarium oxysporum Schlecht. emend. Snyder & Hansen, the causal agent of root rot of date palm offshoots (Phoenix dactylifera L.) in Iraq |
| title_fullStr | Efficacy of Bacillus subtilis (Ehrenberg1835) Cohn1872, in suppressing Fusarium oxysporum Schlecht. emend. Snyder & Hansen, the causal agent of root rot of date palm offshoots (Phoenix dactylifera L.) in Iraq |
| title_full_unstemmed | Efficacy of Bacillus subtilis (Ehrenberg1835) Cohn1872, in suppressing Fusarium oxysporum Schlecht. emend. Snyder & Hansen, the causal agent of root rot of date palm offshoots (Phoenix dactylifera L.) in Iraq |
| title_short | Efficacy of Bacillus subtilis (Ehrenberg1835) Cohn1872, in suppressing Fusarium oxysporum Schlecht. emend. Snyder & Hansen, the causal agent of root rot of date palm offshoots (Phoenix dactylifera L.) in Iraq |
| title_sort | efficacy of bacillus subtilis ehrenberg1835 cohn1872 in suppressing fusarium oxysporum schlecht emend snyder hansen the causal agent of root rot of date palm offshoots phoenix dactylifera l in iraq |
| topic | b. subtilis date palm f. oxysporum plant physiology |
| url | https://journals.uni-lj.si/aas/article/view/13108 |
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