Grapes are the main reason why the grapevine (Vitis vinifera L.) is cultivated. However, climate, soil conditions, vegetation and anthropogenic effects on the soil greatly affect grapevine production. The organoleptic...Grapes are the main reason why the grapevine (Vitis vinifera L.) is cultivated. However, climate, soil conditions, vegetation and anthropogenic effects on the soil greatly affect grapevine production. The organoleptic properties of grape-derived products, such as wine, are influenced by these factors, which are becoming increasingly popular in Africa. Thus, grapevines, which are commonly grown in warm regions, are acclimatized in Africa using grapevine varieties that can adjust to tropical conditions. This study, which was carried out in 2019, aimed to promote grapevine cultivation in Côte d’Ivoire by examining the influence of pedoclimatic factors on the agro-physiological characteristics of grapevines. In Côte d’Ivoire, there were four distinct agro-ecological zones (North, South, Southeast and West) where three grapevine varieties, Bequignol, Muscat Rouge and Aleatico, were grown. Grapevine plants could grow robustly in morpho-physiological ways because the soils had sufficient fertility, as revealed by the analysis of experimental sites. Grapevine varieties have successfully adapted to different terroirs, with the exception of Muscat Rouge, which only displayed favorable morphological characteristics in the Man zone (West). Regardless of the grape variety, the regions with the best grapevine-growing conditions were Man (West), followed by Aboisso (Southeast). Consequently, grapevine development was less favorable in Korhogo (North) and Abidjan (South) zones. Thus, the cultivation of grapevine varieties in Côte d’Ivoire was greatly influenced by terroir.展开更多
The soils of the semi-arid Sudano-Sahelian region of West Africa have been identified as being highly vulnerable to soil degradation with impacts on their capacity to provide goods and services in which soil microorga...The soils of the semi-arid Sudano-Sahelian region of West Africa have been identified as being highly vulnerable to soil degradation with impacts on their capacity to provide goods and services in which soil microorganisms participate. Unfortunately, soil microbial diversity from this semi-arid region with high rainfall variability remains largely unexplored. The aim of the present study was to characterize the diversity and composition of the soil bacterial communities and to identify factors involved in their spatial distribution along an environmental gradient in Senegal. Samples were collected from non-anthropogenic sites across four pedoclimatic zones. Bacterial communities were characterized using next-generation sequencing and soil physico-chemical parameters were determined. Our results showed that Firmicutes, Actinobacteria, Proteobacteria, Chloroflexi, Gemmatimonadetes, Acidobacteria, and Verrucomicrobia phyla were predominant in the soils of the region. Bacterial α-diversity was stable along the environmental gradient whereas β-diversity highlighted significant changes in the composition of the soil bacterial community. Changes were driven by shifts in the relative abundance of OTUs belonging mainly to the genus Bacillus, Conexibacter, Kaistobacter, Solirubrobacter, Ktedonobacter, Sphingomonas, Microvirga, Rubrobacter and Pelobacter. Soil properties like pH, soil moisture and clay content were the environmental parameters identified as drivers of the composition of the bacterial communities in the semi-arid Sudano-Sahelian region of Senegal (West Africa).展开更多
文摘Grapes are the main reason why the grapevine (Vitis vinifera L.) is cultivated. However, climate, soil conditions, vegetation and anthropogenic effects on the soil greatly affect grapevine production. The organoleptic properties of grape-derived products, such as wine, are influenced by these factors, which are becoming increasingly popular in Africa. Thus, grapevines, which are commonly grown in warm regions, are acclimatized in Africa using grapevine varieties that can adjust to tropical conditions. This study, which was carried out in 2019, aimed to promote grapevine cultivation in Côte d’Ivoire by examining the influence of pedoclimatic factors on the agro-physiological characteristics of grapevines. In Côte d’Ivoire, there were four distinct agro-ecological zones (North, South, Southeast and West) where three grapevine varieties, Bequignol, Muscat Rouge and Aleatico, were grown. Grapevine plants could grow robustly in morpho-physiological ways because the soils had sufficient fertility, as revealed by the analysis of experimental sites. Grapevine varieties have successfully adapted to different terroirs, with the exception of Muscat Rouge, which only displayed favorable morphological characteristics in the Man zone (West). Regardless of the grape variety, the regions with the best grapevine-growing conditions were Man (West), followed by Aboisso (Southeast). Consequently, grapevine development was less favorable in Korhogo (North) and Abidjan (South) zones. Thus, the cultivation of grapevine varieties in Côte d’Ivoire was greatly influenced by terroir.
文摘The soils of the semi-arid Sudano-Sahelian region of West Africa have been identified as being highly vulnerable to soil degradation with impacts on their capacity to provide goods and services in which soil microorganisms participate. Unfortunately, soil microbial diversity from this semi-arid region with high rainfall variability remains largely unexplored. The aim of the present study was to characterize the diversity and composition of the soil bacterial communities and to identify factors involved in their spatial distribution along an environmental gradient in Senegal. Samples were collected from non-anthropogenic sites across four pedoclimatic zones. Bacterial communities were characterized using next-generation sequencing and soil physico-chemical parameters were determined. Our results showed that Firmicutes, Actinobacteria, Proteobacteria, Chloroflexi, Gemmatimonadetes, Acidobacteria, and Verrucomicrobia phyla were predominant in the soils of the region. Bacterial α-diversity was stable along the environmental gradient whereas β-diversity highlighted significant changes in the composition of the soil bacterial community. Changes were driven by shifts in the relative abundance of OTUs belonging mainly to the genus Bacillus, Conexibacter, Kaistobacter, Solirubrobacter, Ktedonobacter, Sphingomonas, Microvirga, Rubrobacter and Pelobacter. Soil properties like pH, soil moisture and clay content were the environmental parameters identified as drivers of the composition of the bacterial communities in the semi-arid Sudano-Sahelian region of Senegal (West Africa).
