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Poeydebat C, Carval D, Tixier P, Daribo MO, De Bellaire LDL. Ecological Regulation of Black Leaf Streak Disease Driven by Plant Richness in Banana Agroecosystems. Phytopathology 2018; 108:1184-1195. [PMID: 29726762 DOI: 10.1094/phyto-12-17-0402-r] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Black leaf streak disease (BLSD), caused by the fungus Mycosphaerella fijiensis, is an important threat to banana production. Although its control relies on costly and unsustainable use of fungicides, ecological regulation of BLSD linked to field-scale plant diversity has received little attention. We monitored banana phytometers in plots in banana-based fields where no fungicides were applied. Within each plot, we measured plant richness in three strata, canopy openness, necrotic leaf removal, Musa abundance and richness. We quantified ecological regulation of five BLSD parameters (inoculum sources, spore abundance, lesion density, incubation time, and the area under the disease progression curve) and identified, using structural equation modeling, the characteristics of the plant community and the mechanisms likely responsible for the regulation. Regulation occurred, but most effectively before lesion formation, and was mainly related to plant richness between 1.5 and 5m high. A barrier effect, rather than a dilution effect, more likely limited spore abundance. Our results support the hypothesis that the potential effects of plant richness on leaf-scale microclimate variability and on the diversity of epiphyllic microorganisms are involved in the regulation of incubation time and lesion density. Field-scale management of plant diversity may be a promising lever to foster ecological regulation of BLSD.
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Affiliation(s)
- Charlotte Poeydebat
- First, second, and fourth authors: CIRAD, UPR GECO, F-97285 Le Lamentin, Martinique, France; first, second, third, and fifth authors: CIRAD, UPR GECO, F-34398 Montpellier, France; first, second, third, and fifth authors: GECO, University of Montpellier, CIRAD, Montpellier, France; and third author: Departamento de Agricultura y Agroforesteria, CATIE, Turrialba, Cartago, Costa Rica
| | - Dominique Carval
- First, second, and fourth authors: CIRAD, UPR GECO, F-97285 Le Lamentin, Martinique, France; first, second, third, and fifth authors: CIRAD, UPR GECO, F-34398 Montpellier, France; first, second, third, and fifth authors: GECO, University of Montpellier, CIRAD, Montpellier, France; and third author: Departamento de Agricultura y Agroforesteria, CATIE, Turrialba, Cartago, Costa Rica
| | - Philippe Tixier
- First, second, and fourth authors: CIRAD, UPR GECO, F-97285 Le Lamentin, Martinique, France; first, second, third, and fifth authors: CIRAD, UPR GECO, F-34398 Montpellier, France; first, second, third, and fifth authors: GECO, University of Montpellier, CIRAD, Montpellier, France; and third author: Departamento de Agricultura y Agroforesteria, CATIE, Turrialba, Cartago, Costa Rica
| | - Marie-Odette Daribo
- First, second, and fourth authors: CIRAD, UPR GECO, F-97285 Le Lamentin, Martinique, France; first, second, third, and fifth authors: CIRAD, UPR GECO, F-34398 Montpellier, France; first, second, third, and fifth authors: GECO, University of Montpellier, CIRAD, Montpellier, France; and third author: Departamento de Agricultura y Agroforesteria, CATIE, Turrialba, Cartago, Costa Rica
| | - Luc De Lapeyre De Bellaire
- First, second, and fourth authors: CIRAD, UPR GECO, F-97285 Le Lamentin, Martinique, France; first, second, third, and fifth authors: CIRAD, UPR GECO, F-34398 Montpellier, France; first, second, third, and fifth authors: GECO, University of Montpellier, CIRAD, Montpellier, France; and third author: Departamento de Agricultura y Agroforesteria, CATIE, Turrialba, Cartago, Costa Rica
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Poeydebat C, Tixier P, De Bellaire LDL, Carval D. Dataset on the regulation of banana weevil abundance and corm damage associated with plant richness and the ground-dwelling arthropods' food web. Data Brief 2017; 15:208-212. [PMID: 29214190 PMCID: PMC5712055 DOI: 10.1016/j.dib.2017.09.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2017] [Accepted: 09/07/2017] [Indexed: 12/02/2022] Open
Abstract
The data presented in this article are related to the research article entitled "Plant richness enhances banana weevil regulation in a tropical agroecosystem by affecting a multitrophic food web " [1]. It provides information about plant species richness, weevil corm damage and the abundance of different arthropod groups, including the banana weevil and its potential natural enemies and alternative preys.
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Affiliation(s)
- Charlotte Poeydebat
- CIRAD, UPR GECO, F-97285 Le Lamentin, Martinique, France.,CIRAD, UPR GECO, F-34398 Montpellier, France
| | - Philippe Tixier
- CIRAD, UPR GECO, F-34398 Montpellier, France.,Departamento de Agricultura y Agroforesteria, CATIE, CR-30501 Turrialba, Costa Rica
| | | | - Dominique Carval
- CIRAD, UPR GECO, F-97285 Le Lamentin, Martinique, France.,CIRAD, UPR GECO, F-34398 Montpellier, France
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