Introduction of Australian acacias into dry Tropical West Africa

Cossalter, Christian

doi:10.1016/0378-1127(86)90034-4

Cited by 34 publications

(20 citation statements)

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“…Nitrogen-fixing legumes and leguminous tree species, such as Acacia, play a major role in environmental protection and in the local economies of dry and semi-arid tropical Africa [8,9,17]. The Acacia species remain very abundant in savannas and arid regions of Australia, Africa, India and the Americas.…”

Section: Introductionmentioning

confidence: 99%

Ectomycorrhization of Acacia holosericea A. Cunn. ex G. Don by Pisolithus spp. in Senegal: Effect on plant growth and on the root-knot nematode Meloidogyne javanica

et al. 2000

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Summary -The ectomycorrhization of Acacia holosericea with fungi isolated in Senegal (belonging to the Pisolithus genus) and their effect on Meloidogyne javanica have been studied. In 100 tree plantations of Eucalyptus camaldulensis, Casuarina equisetifolia, Acacia mangium and A. holosericea, 33 fruiting bodies of the ectomycorrhizal fungus Pisolithus were collected and cultured under axenic conditions. Only four fungal isolates have induced the formation of typical ectomycorrhizae with A. holosericea under axenic conditions. One of these, COI 024, increased plant development under glasshouse conditions and decreased the multiplication of the root-knot nematode Meloidogyne javanica. The mechanisms involved in these interactions and the potential use of the ectomycorrhizal symbiosis in agroforestry programs are being discussed.Pisolithus / Meloidogyne / ectomycorrhizae / leguminous trees / Senegal Résumé -Ectomycorhization de Acacia holosericea A. Cunn. ex G. Don par Pisolithus spp. au Sénégal : effet sur le dévelop-pement de la plante et sur la multiplication du nématode à galles Meloidogyne javanica. L'effet de symbiotes fongiques ectomycorhiziens, appartenant au genre Pisolithus et isolés au Sénégal, a été étudié sur la croissance de plants d'Acacia holosericea et sur le développement d'un peuplement de nématodes phytoparasites Meloidogyne javanica. Une enquête a été réalisée sur 100 arbres choisis dans différentes plantations de Eucalyptus camaldulensis, Casuarina equisetifolia, Acacia mangium et A. holosericea où trente trois carpophores de Pisolithus spp. ont été prélevés. Le mycélium issu de chaque carpophore a été cultivé en conditions axéniques et chaque souche a été testée pour sa compatibilité avec des plants d'A. holosericea. Seulement 4 isolats ont induit la formation d'ectomycorhizes en conditions axéniques. Dans une expérience conduite en serre avec A. holosericea, une souche, COI 024, a stimulé la croissance de la plante hôte et inhibé la multiplication de Meloidogyne javanica. Les mécanismes susceptibles d'être à l'origine de ces phénomènes sont discutés et les effets bénéfiques potentiels du recours à la mycorhization contrôlée dans les programmes agroforestiers sont exposés.Pisolithus / Meloidogyne / ectomycorhize / legumineuse / Sénégal

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Section: Introductionmentioning

confidence: 99%

Ectomycorrhization of Acacia holosericea A. Cunn. ex G. Don by Pisolithus spp. in Senegal: Effect on plant growth and on the root-knot nematode Meloidogyne javanica

et al. 2000

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“…Among these, and A. seyal remain the two most commercially important species (Cossalter, 1987) mainly for their gum produce (FAO, 1995). The majority of gum arabic that enters international trade originates in a region called the 'gum belt' of Sub-Saharan Africa; an area that extends from the northern parts of West Africa eastwards to Sudan and Ethiopia (Brockwell et al, 1995;Chikamai, 1996).…”

Section: Introductionmentioning

confidence: 99%

“…The is the second largest within the Mimosoidae) (Chikamai, 1996) with an estimated 1380 species distributed 2003). Among these, A. senegal remain the two most commercially important (Cossalter, 1987) mainly for their gum produce (FAO, 1995). The majority of gum arabic that enters international trade originates in a region called the 'gum Saharan Africa; an area that extends from the s to Sudan and 1995;Chikamai, 1996).…”

Section: Introductionmentioning

confidence: 99%

Effect of growing media, sowing depth, and hot water treatment on seed germination and seedling biomass of <i>Acacia senegal</i> (L) wild

Kibru¹,

Zewdie²,

Gure³

et al. 2016

Sci. Technol. Arts Res. J.

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“…Hence, it may be necessary to reinforce or replace the native inoculum potential of mycorrhizal fungi by appropriate inoculation technologies (29,30). Fast-growing leguminous trees belonging to the Acacia genus, brought from Australia and introduced to Western Africa, appear to be well adapted to sahelian and Sahelo-Sudanian climatic conditions (11,57). In addition to rhizobial symbiosis, this tree species can form arbuscular mycorrhiza (AM) and/or ectomycorrhiza (19,31).…”

mentioning

confidence: 99%

The Exotic Legume Tree Species Acacia holosericea Alters Microbial Soil Functionalities and the Structure of the Arbuscular Mycorrhizal Community

Remigi

Faye

Kane

et al. 2008

Appl Environ Microbiol

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The response of microbial functional diversity as well as its resistance to stress or disturbances caused by the introduction of an exotic tree species, Acacia holosericea, ectomycorrhized or not with Pisolithus albus, was examined. The results show that this ectomycorrhizal fungus promotes drastically the growth of this fastgrowing tree species in field conditions after 7 years of plantation. Compared to the crop soil surrounding the A. holosericea plantation, this exotic tree species, associated or not with the ectomycorrhizal symbiont, induced strong modifications in soil microbial functionalities (assessed by measuring the patterns of in situ catabolic potential of microbial communities) and reduced soil resistance in response to increasing stress or disturbance (salinity, temperature, and freeze-thaw and wet-dry cycles). In addition, A. holosericea strongly modified the structure of arbuscular mycorrhizal fungus communities. These results show clearly that exotic plants may be responsible for important changes in soil microbiota affecting the structure and functions of microbial communities.Forest loss and degradation through human disturbance as well as deterioration of land productivity is a major problem in large areas of arid and semiarid environments. Degraded soils are characterized by loss or disturbance of the vegetation cover, increased soil erosion, decreased in-water infiltration, loss of available nutrients and organic matter, loss of microbial propagules, and/or diminution in microbial activity (25,35,44). Restoration of ecosystem health and productivity was traditionally achieved via abandonment of land and subsequent natural forest succession. In recent decades, management options for acceleration of the recovery and restoration of the productivity and biodiversity of disturbed ecosystems have been considered, since fallow periods have been shortened or eliminated due to increased anthropogenic pressure and agriculture intensification (49). Concerning the techniques used for rehabilitating degraded areas, there is increasing evidence that forest plantations can play a key role in ecosystem rehabilitation or restoration (52). Among candidate plantation species, fast-growing leguminous tree species (e.g., Australian Acacia species) should have preference.

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Introduction of Australian acacias into dry Tropical West Africa

Cited by 34 publications

References 2 publications

Ectomycorrhization of Acacia holosericea A. Cunn. ex G. Don by Pisolithus spp. in Senegal: Effect on plant growth and on the root-knot nematode Meloidogyne javanica

Ectomycorrhization of Acacia holosericea A. Cunn. ex G. Don by Pisolithus spp. in Senegal: Effect on plant growth and on the root-knot nematode Meloidogyne javanica

Effect of growing media, sowing depth, and hot water treatment on seed germination and seedling biomass of <i>Acacia senegal</i> (L) wild

The Exotic Legume Tree Species Acacia holosericea Alters Microbial Soil Functionalities and the Structure of the Arbuscular Mycorrhizal Community

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