Diversity and functional assessment of indigenous culturable bacteria inhabiting fine-flavor cacao rhizosphere: Uncovering antagonistic potential against Moniliophthora roreri .

Autor:	Crisostomo-Panuera JS; Laboratorio de Investigación en Sanidad Vegetal, Instituto de Investigación para El Desarrollo Sustentable de Ceja de Selva (INDES-CES), Universidad Nacional Toribio Rodríguez de Mendoza (UNTRM), Calle Higos Urco 342, Chachapoyas, Amazonas, Peru., Nieva ASDV; Centro Regional de Energía y Ambiente para el Desarrollo Sustentable (CREAS-CONICET-UNCA). Nuñez del Prado 366, Catamarca, Argentina., Ix-Balam MA; Laboratorio de Investigación en Sanidad Vegetal, Instituto de Investigación para El Desarrollo Sustentable de Ceja de Selva (INDES-CES), Universidad Nacional Toribio Rodríguez de Mendoza (UNTRM), Calle Higos Urco 342, Chachapoyas, Amazonas, Peru., Díaz-Valderrama JR; Laboratorio de Investigación en Sanidad Vegetal, Instituto de Investigación para El Desarrollo Sustentable de Ceja de Selva (INDES-CES), Universidad Nacional Toribio Rodríguez de Mendoza (UNTRM), Calle Higos Urco 342, Chachapoyas, Amazonas, Peru., Alviarez-Gutierrez E; Laboratorio de Investigación en Sanidad Vegetal, Instituto de Investigación para El Desarrollo Sustentable de Ceja de Selva (INDES-CES), Universidad Nacional Toribio Rodríguez de Mendoza (UNTRM), Calle Higos Urco 342, Chachapoyas, Amazonas, Peru., Oliva-Cruz SM; Laboratorio de Investigación en Sanidad Vegetal, Instituto de Investigación para El Desarrollo Sustentable de Ceja de Selva (INDES-CES), Universidad Nacional Toribio Rodríguez de Mendoza (UNTRM), Calle Higos Urco 342, Chachapoyas, Amazonas, Peru., Cumpa-Velásquez LM; Laboratorio de Investigación en Sanidad Vegetal, Instituto de Investigación para El Desarrollo Sustentable de Ceja de Selva (INDES-CES), Universidad Nacional Toribio Rodríguez de Mendoza (UNTRM), Calle Higos Urco 342, Chachapoyas, Amazonas, Peru.
Jazyk:	angličtina
Zdroj:	Heliyon [Heliyon] 2024 Mar 21; Vol. 10 (7), pp. e28453. Date of Electronic Publication: 2024 Mar 21 (Print Publication: 2024).
DOI:	10.1016/j.heliyon.2024.e28453
Abstrakt:	The Peruvian Amazonian native cacao faces ongoing challenges that significantly undermine its productivity. Among them, frosty pod rot disease and cadmium accumulation result in losses that need for effective and environmentally safe strategies, such as those based on bacteria. To explore the biological resources in the cacao soil, a descriptive study was conducted to assess the diversity of culturable bacteria across three production districts in the Amazonas region: La Peca, Imaza, and Cajaruro. The study also focused on the functional properties of these bacteria, particularly those related to the major issues limiting cacao cultivation. For this purpose, 90 native bacterial isolates were obtained from the cacao rhizosphere. According to diversity analysis, the community was composed of 19 bacterial genera, with a dominance of the Bacillaceae family and variable distribution among the districts. This variability was statistically supported by the PCoA plots and is related to the pH of the soil environment. The functional assessment revealed that 56.8% of the isolates showed an antagonism index greater than 75% after 7 days of confrontation. After 15 days of confrontation with Moniliophthora roreri, 68.2% of the bacterial population demonstrated this attribute. This capability was primarily exhibited by Bacillus strains. On the other hand, only 4.5% were capable of removing cadmium, highlighting the biocontrol potential of the bacterial community. In addition, some isolates produced siderophores (13.63%), solubilized phosphate (20.45%), and solubilized zinc (4.5%). Interestingly, these traits showed an uneven distribution, which correlated with the divergence found by the beta diversity. Our results revealed a diverse bacterial community inhabiting the Amazonian cacao rhizosphere, showcasing crucial functional properties related to the biocontrol of M. roreri . The information generated serves as a significant resource for the development of further biotechnological tools that can be applied to native Amazonian cacao. Competing Interests: The authors declare the following financial interests/personal relationships which may be considered as potential competing interests: Oliva-Cruz, Segundo Manuel reports financial support was provided by National Council of Science Technology and Technology Innovation. (© 2024 The Authors.)
Databáze:	MEDLINE
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