Etat d’infestation, connaissance endogène et approche systématique des espèces du genre &lt;em&gt;Striga&lt;/em&gt; au Burkina Faso

Boussim, IJ; Yonli, Djibril; Guinko, Sita; Sallé, G.

doi:10.4314/ijbcs.v5i4.4

Cited by 12 publications

(13 citation statements)

References 8 publications

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“…pedicellatum ) in Mali and Benin. Once compiled from the available databases and literature, this host range appears wider than previously published lists [ 19 – 24 , 44 , 46 , 47 ].…”

Section: Resultsmentioning

confidence: 99%

The witchweed Striga gesnerioides and the cultivated cowpea: A geographical and historical analysis of their West African distribution points to the prevalence of agro-ecological factors and the parasite’s multilocal evolution potential

et al. 2021

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The increasing severity of Striga gesnerioides attacks on cowpea across West Africa has been related to its prolificity, seed mobility and longevity, and adaptation to aridity, in a context of agricultural intensification. To understand this fast extension, we analyzed (1) the distributions of the crop and the witchweed with ecological niche modeling and multivariate climate analysis, and (2) the chronological information available from collections and the literature. The ecoclimatic envelope of S. gesnerioides attacks on cowpea is the same as on wild hosts. Consistently, the modeled distribution of cowpea infestations is closely similar to the simple superposition of the parasite model (involving all hosts) and the crop model. Striga gesnerioides infestations are restricted to the driest component of the cultivated cowpea ecoclimatic niche, corresponding to the Sahelian and Sudano-Sahelian belts and the Dahomey gap. Thus, the parasite distribution, determined by its own requirements, does not constrain cowpea cultivation under Guinean climates. The spatial and temporal distributions of S. gesnerioides field infestations are consistent with an earlier impact on cowpea production in eastern West Africa, related itself to a similar trend in cowpea cultivation intensification from Niger, Nigeria and Benin to Burkina Faso and Ghana. Mali and Senegal were affected later, and literature reports of Senegalese strains of S. gesnerioides from the wild developing virulence on cowpea offer a model for the diffusion of witchweed parasitism by multilocal evolution, through host-driven selection, instead of epidemic diffusion. A contrario, in Côte d’Ivoire, cowpea is much less widespread, so the parasite has remained confined to the wild compartment. Thus, both historical and ecogeographic analyses refute the vision of S. gesnerioides as an invader. Instead, they point to the increasing importance and intensification of the crop, and the consequent loss of biodiversity, as the main drivers of the extension and diversification of its crop-specific strains.

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“…pedicellatum ) in Mali and Benin. Once compiled from the available databases and literature, this host range appears wider than previously published lists [ 19 – 24 , 44 , 46 , 47 ].…”

Section: Resultsmentioning

confidence: 99%

The witchweed Striga gesnerioides and the cultivated cowpea: A geographical and historical analysis of their West African distribution points to the prevalence of agro-ecological factors and the parasite’s multilocal evolution potential

et al. 2021

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“…Au sein du G1, l'hémicryptophyte prépondérante est Striga hermonthicai, une plante parasite épirhize qui colonise davantage les champs situés dans les domaines phytogéographiques Sud sahélien et Nord soudanien correspondant à notre zone d'étude. L'espèce montre une préférence pour les sols épuisés par la culture continue durant plusieurs années (Boussim et al, 2011). Cependant, dans ce groupement floristique, quelques individus de Andropogon gayanus ont été dénombrés, cela indique que le milieu présentait de bonnes potentialités édaphiques (Mamane et al 2018) car les espèces du genre Andropogon indiquent un milieu fertile non dégradé (Mahamane et al, 2007).…”

Section: Discussionunclassified

Analyse de la diversité floristique de la zone pastorale de Gadeghin en zone soudanienne du Burkina Faso

Ouedraogo¹,

Rabiou²,

Inoussa³

et al. 2022

Int. J. Bio. Chem. Sci

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La création des zones pastorales était une approche stratégique de l’Etat burkinabé pour sauver le bétail et accroitre sa productivité à la suite des sècheresses récurrentes. La surexploitation des ressources végétales dans la zone pastorale de Gadeghin est susceptible de les mettre en péril. L’objectif de la présente étude était d’analyser les caractéristiques floristiques et de faire le point sur la biodiversité floristique de cette zone pastorale. Pour ce faire, un inventaire de la végétation a été mené en septembre 2019. Ainsi, 144 relevés ont été réalisés et au total 213 espèces recensées. La flore est dominée par les thérophytes (58%) et les phanérophytes (20%). Les hémicryptophytes représentent 8% de l’ensemble des espèces. Les espèces d’occurrence pantropicale et paléotropicale dominent le spectre phytogéographique. Les valeurs de l’indice de Shannon (H’=4,77 bits) et de l’équitabilité de Pielou (Eq=0,64) témoignent d’une grande diversité de la flore et d’une bonne répartition des individus au sein des espèces. Au regard de la faible proportion des hémicryptophytes, il y a lieu de prendre des mesures pour améliorer la qualité fourragère des parcours notamment par des opérations de végétalisation adaptées à la zone pastorale étant donné que celle-ci est dédiée à l’exploitation pastorale continue.

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“…The stem is erect and scabrous and the leaves can be simple or branched, linear or elliptical with an axillary or terminal spiral cyme inflorescence comprising 40 to 50 flowers [6]. S. hermonthica is a parasitic species of cereals such as sorghum and millet whose losses can reach more than 10 million tons of production in Sub-Saharan Africa [7].…”

Section: Introductionmentioning

confidence: 99%

Antioxidant Activity and Phenolic Compounds Content of Extracts from </>Ceratotheca sesamoides</i> Endl and <i>Striga hermonthica</i> (Delille) Benth Used as Antheminthic in Burkina Faso

Dıcko¹,

Sami²,

Belem³

et al. 2022

JBM

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The revaluation of medicinal plants in the veterinary pharmacopoeia is essential for the development of livestock in Burkina Faso. In order to justify the use of C. sesamoides and S. hermonthica in the treatment of gastrointestinal parasitosis of small ruminants, a quantification of phenolic compounds as well as antioxidant activity and acute toxicité evaluation of both plants were performed. Acute toxicity was evaluated by administering a single dose of 2000 mg/kg body weight of aqueous extract of both plants to mice. The highest total polyphenol content for C. sesamoides was obtained in the ethyl acetate fraction with 47.236 ± 2.57 mgEAG/100mg while that of S. hermonthica was 74.871 ± 2.57 mgEAG/100mg obtained with the n-butanol Fraction. The dichloromethane extract of S. hermonthica obtained the highest total flavonoid content with 7.31 ± 0.48 mgEQ/ 100 while the highest total flavonoid content of C. sesamoides was obtained with ethyl acetate fraction with 5.4273 ± 0.35 mgEQ/100mg. The aqueous extract of C. sesamoides obtained the highest content of condensed tannins with 3.028 ± 0.13 mgEAT/100mg. Both plant's extracts did not show any signs of toxicity in NMRI mice after administration of the dose of 2000 mg/kg.

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Etat d’infestation, connaissance endogène et approche systématique des espèces du genre <em>Striga</em> au Burkina Faso

Cited by 12 publications

References 8 publications

The witchweed Striga gesnerioides and the cultivated cowpea: A geographical and historical analysis of their West African distribution points to the prevalence of agro-ecological factors and the parasite’s multilocal evolution potential

The witchweed Striga gesnerioides and the cultivated cowpea: A geographical and historical analysis of their West African distribution points to the prevalence of agro-ecological factors and the parasite’s multilocal evolution potential

Analyse de la diversité floristique de la zone pastorale de Gadeghin en zone soudanienne du Burkina Faso

Antioxidant Activity and Phenolic Compounds Content of Extracts from </>Ceratotheca sesamoides</i> Endl and <i>Striga hermonthica</i> (Delille) Benth Used as Antheminthic in Burkina Faso

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Etat d’infestation, connaissance endogène et approche systématique des espèces du genre <em>Striga</em> au Burkina Faso

Cited by 12 publications

References 8 publications

The witchweed Striga gesnerioides and the cultivated cowpea: A geographical and historical analysis of their West African distribution points to the prevalence of agro-ecological factors and the parasite’s multilocal evolution potential

The witchweed Striga gesnerioides and the cultivated cowpea: A geographical and historical analysis of their West African distribution points to the prevalence of agro-ecological factors and the parasite’s multilocal evolution potential

Analyse de la diversité floristique de la zone pastorale de Gadeghin en zone soudanienne du Burkina Faso

Antioxidant Activity and Phenolic Compounds Content of Extracts from &lt;/&gt;Ceratotheca sesamoides&lt;/i&gt; Endl and &lt;i&gt;Striga hermonthica&lt;/i&gt; (Delille) Benth Used as Antheminthic in Burkina Faso

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Antioxidant Activity and Phenolic Compounds Content of Extracts from </>Ceratotheca sesamoides</i> Endl and <i>Striga hermonthica</i> (Delille) Benth Used as Antheminthic in Burkina Faso