Les Loranthaceae : un atout pour l’essor de la pharmacopée traditionnelle au Cameroun

Dibong, Siegfried Didier; Obiang, NL Engone; Din, Ndongo; Priso, R. J.; Taffouo, V. D.; Fankem, Henri; Sallé, G.; Akoa, Amougou

doi:10.4314/ijbcs.v3i4.47185

Cited by 10 publications

(16 citation statements)

References 24 publications

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“…Other areas in Africa have also been reported to have these parasites. These areas include Benin, Cameroon, Gabon, Ghana, Guinea, Liberia, Mali, Niger and Senegal [5,6] al., 2009, 2010c). …”

Section: Discussionmentioning

confidence: 99%

Myrmecofauna Fruit Trees Infected by Loranthaceae Orchards Lokomo (East Cameroon)

Dibong¹,

Mony²,

Jrn.³

et al. 2012

PLANT

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The objective of this study was to identify the myrmecofauna fruit trees infected by Loranthaceae orchards Lokomo (East Cameroon). The collection and identification of myrmecofauna was made on an area of 5 ha. The work was conducted from October to December 2010. The orchards consist of a mixture of exotic ornemental trees, fruit trees for consumption and forest species deliberately left in place. Woody species hosts concerned were Albizia adianthifolia, Calliandra susinamensis, Citrus maxima, Entandrophragma cylindricum, Psidium guajava, Macaranga hurifolia, Phyllanthus discoides and Terminalia mantaly. A total of seven ant species grouped in six genera and two subfamilies (Formicinae and Myrmicinae) were identified. In Formicinae, two genera have been identified, Camponotus and Oecophylla. Myrmicinae in turn had three genera, Atopomyrmex, Crematogaster and Tetramorium. The activity of myrmecophilous revealed that ants forage on flowers, fruits and suckers of T. ogowensis and T. preussii. The suckers dried out and degenerated causing the death of the tufts.

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Section: Discussionmentioning

confidence: 99%

Myrmecofauna Fruit Trees Infected by Loranthaceae Orchards Lokomo (East Cameroon)

Dibong¹,

Mony²,

Jrn.³

et al. 2012

PLANT

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“…Cette famille constitue un atout pour l'essor de la pharmacopée traditionnelle au Cameroun (Dibong et al, 2009c(Dibong et al, , 2009d. Cependant, les pertes de rendement doivent être chiffrées pour connaître leur impact sur l'économie.…”

Section: Resultsunclassified

Faut-il éradiquer les Loranthaceae sur les ligneux à fruits commercialisés de la région littorale du Cameroun ?

Dibong¹,

Biyon²,

Obiang³

et al. 2010

International Journal of Biological and Chemical Sciences

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RESUMEDans la région du littoral camerounais, Phragmanthera capitata (généraliste) et Tapinanthus ogowensis (spécialiste) sont majoritaires dans la plupart des agroécosystèmes. Les deux Loranthaceae attaquent les essences cultivées ou spontanées d'importance économique ou non, réduisent les rendements et détériorent la qualité des fruits sous l'effet néfaste et conjugué de la salinité des sols. Les hémiparasites prélèvent sur leurs hôtes de l'eau et des substances minérales nécessaires à leur développement. Le comportement généraliste ou spécialiste des deux Loranthaceae sur la réduction des concentrations en Na+ et K+ a été étudié sur cinq ligneux parasités. Le dosage du Na+ et du K+ par spectrophotométrie de flamme sur 30 échantillons appartenant à cinq couples Loranthaceae/hôte ont révélé que les concentrations moyennes de Na+ varient entre 5,76 ± 0,68 et 33,74 ± 1,31 g/kg de ms chez les hôtes et entre 8,66 ± 1,84 et 19,84 ± 1,26 g/kg de ms chez les Loranthaceae. Les concentrations moyennes de K+ varient entre 16,32 ± 1,54 et 143,08 ± 2,01 g/kg de ms chez les hôtes et entre 36,18 ± 2,86 et 122,32 ± 1,72 g/kg de ms chez les Loranthaceae. Les minima chez les hôtes correspondent à la racine et chez les Loranthaceae au suçoir. Les maxima chez les hôtes correspondent aux feuilles des branches non parasitées et chez les Loranthaceae aux feuilles. Ces résultats discutés en fonction de la biologie des hémiparasites suggèrent que l'éradication n'est pas nécessaire compte tenu de leur atout dans la pharmacopée traditionnelle. Toutefois la compréhension des interactions parasitaires des acteurs en présence permettrait le contrôle des Loranthaceae et la préservation de la biodiversité.

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“…In fact, plum trees observed in the study area could belong to different varieties, therefore presenting different degree of sensitivity towards the parasites as reported by Sonké et al (2000). In addition, the pruning of attacked branches as a curative practice in many of these villages, the flora composition of the agro ecosystems and the vicinity between the hosts plant could also explained the difference in the prevalence between the different villages (Raynal-Roques and Paré, 1998;Dabou, 2009;Dibong et al, 2009c). The maxima number of Loranthaceaae (17; Melah, Zimla, Toulah, Zimtetsa and 29; Meganh, Tsekoug) observed in some trees in the study area are in the same range with the results of Feguem (2011) on Psidium guajava in the locality of Tubah (North-West Region, Cameroon) and Dibong et al (2009a;c) on fruiting trees in the Littoral Region of Cameroon.…”

Section: Discussionmentioning

confidence: 99%

Parasitism of plum tree (Dacryodes edulis, Burseraceae) by Loranthaceae in the locality of Fotetsa-Dschang (West-Cameroon)

Fotso¹,

Mbouobda²,

Tita³

et al. 2014

Afr. J. Agric. Res.

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Plum tree (Dacryodes edulis) in Cameroon is a fruiting and shading tree in agro ecosystems. It is of nutritional, medicinal and economical values to local population. Its productivity is reduced partially in some localities by the Loranthaceae parasites. These parasites were censured on plum trees in all the nine villages of the locality Fotetsa (West Region of Cameroon) where they are mainly shading plants in coffee farms. In each village, all fruits bearing plum trees located in a perimeter of 1850 × 60 m were observed and characterized using the stem diameter, number of Loranthaceae present and the taxon of the parasite. At Fotetsa, four Loranthaceae species attack plum trees: these are Tapinanthus apodanthus, Phragmanthera capitata, Tapinanthus oleifolius and Viscum congolense. The rate of parasitism varied significantly (from 41.46 to 62.74%) between the nine villages of the locality of Fotetsa in function of the different classes of plum tree stem circumference. Also, the number of Loranthaceae per plum tree varied in function of localities with maxima within 17 and 29 Loranthaceaae per tree. In each village, average mean number of Loranthaceaae per tree and average mean stem circumference were correlated. Considering the negative impact of Loranthaceae parasite on fruiting plant production, it is imperative to envisage preventive methods (limitation of species propagation) and curative methods (mechanical destruction of species fixed on the host plant) for fight against these hemiparasite phanerogames.

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Les Loranthaceae : un atout pour l’essor de la pharmacopée traditionnelle au Cameroun

Cited by 10 publications

References 24 publications

Myrmecofauna Fruit Trees Infected by Loranthaceae Orchards Lokomo (East Cameroon)

Myrmecofauna Fruit Trees Infected by Loranthaceae Orchards Lokomo (East Cameroon)

Faut-il éradiquer les Loranthaceae sur les ligneux à fruits commercialisés de la région littorale du Cameroun ?

Parasitism of plum tree (Dacryodes edulis, Burseraceae) by Loranthaceae in the locality of Fotetsa-Dschang (West-Cameroon)

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