Growth and physiological responses of enset (Ensete ventricosum) clones induced by a leaf extract and infected with Xanthomonas campestris pv musacearum, causal agent of bacterial wilt
Enset (Ensete ventricosum (Welw.) Cheesman is a multi-purpose crop widely cultivated in the south and southwestern Ethiopia. It supports the livelihood of approximately 20 million people. However, the cultivation of the crop is impeded by enset bacterial wilt disease caused by Xanthomonas campestris...
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| Format: | Article |
| Language: | English |
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Elsevier
2020-02-01
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| Series: | Journal of the Saudi Society of Agricultural Sciences |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S1658077X18303163 |
| _version_ | 1818251363887349760 |
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| author | Getahun Yemata Masresha Fetene |
| author_facet | Getahun Yemata Masresha Fetene |
| author_sort | Getahun Yemata |
| collection | DOAJ |
| description | Enset (Ensete ventricosum (Welw.) Cheesman is a multi-purpose crop widely cultivated in the south and southwestern Ethiopia. It supports the livelihood of approximately 20 million people. However, the cultivation of the crop is impeded by enset bacterial wilt disease caused by Xanthomonas campestris pv musacearum (Xcm). The objective of the study was to evaluate the role of induction with a leaf extract in ameliorating the performance of infected enset clones and the subsequent effect on disease incidence reduction under field condition. Photosynthetic assimilation rate was measured using LCPro+ portable photosynthesis system. Disease incidence was determined by dividing number of dead plants to total number of plants inoculated and multiplied by 100. Infection affected the growth and physiology of both clones where more damage was noted in the susceptible clone. Infected plants of this clone showed a significant decrease in plant height (PH), pseudostem girth (PSG) and leaf area index (LAI) as compared to controls. However, induction brought 21.4, 25, 46 and 46% increment in PH, PSG, total leaf area and LAI, respectively, as compared to infected controls at 9 months after treatment (9 MAT). Similarly, induction improved the photosynthetic assimilation rate of the susceptible clone. There was a significant variation in disease incidence between treatments and clones. The highest disease incidence was recorded in infected control plants of the susceptible clone. Induction reduced disease incidence by 33.5 and 10.6% in the susceptible and resistant clones, respectively, as compared to infected controls. This shows that systemic acquired resistance could be used as an alternative tool to control enset bacterial wilt. However, further researches should be conducted under different agroecologies to draw a conclusive recommendation. Keywords: Assimilation rate, Disease incidence, Ensete ventricosum, Resistance induction, Pseudostem girth |
| first_indexed | 2024-12-12T16:07:06Z |
| format | Article |
| id | doaj.art-1924fdeb6a3c44b289720e1102043191 |
| institution | Directory Open Access Journal |
| issn | 1658-077X |
| language | English |
| last_indexed | 2024-12-12T16:07:06Z |
| publishDate | 2020-02-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of the Saudi Society of Agricultural Sciences |
| spelling | doaj.art-1924fdeb6a3c44b289720e11020431912022-12-22T00:19:17ZengElsevierJournal of the Saudi Society of Agricultural Sciences1658-077X2020-02-01192121127Growth and physiological responses of enset (Ensete ventricosum) clones induced by a leaf extract and infected with Xanthomonas campestris pv musacearum, causal agent of bacterial wiltGetahun Yemata0Masresha Fetene1Bahir Dar University, Department of Biology, Mail-79, Bahir Dar, Ethiopia; Corresponding author.Addis Ababa University, Department of Plant Biology and Biodiversity Management, Mail-1176, Addis Ababa, EthiopiaEnset (Ensete ventricosum (Welw.) Cheesman is a multi-purpose crop widely cultivated in the south and southwestern Ethiopia. It supports the livelihood of approximately 20 million people. However, the cultivation of the crop is impeded by enset bacterial wilt disease caused by Xanthomonas campestris pv musacearum (Xcm). The objective of the study was to evaluate the role of induction with a leaf extract in ameliorating the performance of infected enset clones and the subsequent effect on disease incidence reduction under field condition. Photosynthetic assimilation rate was measured using LCPro+ portable photosynthesis system. Disease incidence was determined by dividing number of dead plants to total number of plants inoculated and multiplied by 100. Infection affected the growth and physiology of both clones where more damage was noted in the susceptible clone. Infected plants of this clone showed a significant decrease in plant height (PH), pseudostem girth (PSG) and leaf area index (LAI) as compared to controls. However, induction brought 21.4, 25, 46 and 46% increment in PH, PSG, total leaf area and LAI, respectively, as compared to infected controls at 9 months after treatment (9 MAT). Similarly, induction improved the photosynthetic assimilation rate of the susceptible clone. There was a significant variation in disease incidence between treatments and clones. The highest disease incidence was recorded in infected control plants of the susceptible clone. Induction reduced disease incidence by 33.5 and 10.6% in the susceptible and resistant clones, respectively, as compared to infected controls. This shows that systemic acquired resistance could be used as an alternative tool to control enset bacterial wilt. However, further researches should be conducted under different agroecologies to draw a conclusive recommendation. Keywords: Assimilation rate, Disease incidence, Ensete ventricosum, Resistance induction, Pseudostem girthhttp://www.sciencedirect.com/science/article/pii/S1658077X18303163 |
| spellingShingle | Getahun Yemata Masresha Fetene Growth and physiological responses of enset (Ensete ventricosum) clones induced by a leaf extract and infected with Xanthomonas campestris pv musacearum, causal agent of bacterial wilt Journal of the Saudi Society of Agricultural Sciences |
| title | Growth and physiological responses of enset (Ensete ventricosum) clones induced by a leaf extract and infected with Xanthomonas campestris pv musacearum, causal agent of bacterial wilt |
| title_full | Growth and physiological responses of enset (Ensete ventricosum) clones induced by a leaf extract and infected with Xanthomonas campestris pv musacearum, causal agent of bacterial wilt |
| title_fullStr | Growth and physiological responses of enset (Ensete ventricosum) clones induced by a leaf extract and infected with Xanthomonas campestris pv musacearum, causal agent of bacterial wilt |
| title_full_unstemmed | Growth and physiological responses of enset (Ensete ventricosum) clones induced by a leaf extract and infected with Xanthomonas campestris pv musacearum, causal agent of bacterial wilt |
| title_short | Growth and physiological responses of enset (Ensete ventricosum) clones induced by a leaf extract and infected with Xanthomonas campestris pv musacearum, causal agent of bacterial wilt |
| title_sort | growth and physiological responses of enset ensete ventricosum clones induced by a leaf extract and infected with xanthomonas campestris pv musacearum causal agent of bacterial wilt |
| url | http://www.sciencedirect.com/science/article/pii/S1658077X18303163 |
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