Responses of sorghum genotypes to leaf anthracnose (Colletotrichum graminicola) under field conditions in Burkina Faso

Néya, Adama; Normand, M. Le

doi:10.1016/s0261-2194(98)80012-4

Cited by 22 publications

(15 citation statements)

References 10 publications

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“…Among biotic stresses, leaf anthracnose caused by the fungus Colletotrichum graminicola, sooty stripe incited by the fungus Ramulispora sorghi, and striga caused by the parasitic plant Striga hermonthica (Del.) Bent are the most damaging pests in West Africa in general, and particularly in Burkina Faso (Tenkouano, 1995;Neya and Le Normand, 1998;Trouche et al, 2001). In addition, sorghum midge caused by insects (Contarinia sorghicola, Sitodiplosis moselana, Stenodiplosis sorghicola, etc.)…”

Section: Introductionmentioning

confidence: 99%

Impact of Phenolic Compounds and Related Enzymes in Sorghum Varieties for Resistance and Susceptibility to Biotic and Abiotic Stresses

et al. 2005

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Abstract-Contents of phenolic compounds and related enzymes before and after sorghum grain germination were compared between varieties either resistant or susceptible to biotic (sooty stripe, sorghum midge, leaf anthracnose, striga, and grain molds) and abiotic (lodging, drought resistance, and photoperiod sensitivity) stresses. Independent of grain germination, sorghum varieties resistant to biotic and abiotic stresses had on average higher contents of proanthocyanidins (PAs), 3-deoxyanthocyanidins (3-DAs), and flavan-4-ols than susceptible varieties. Results show that content of 3-DAs is a good marker for sorghum resistance to both biotic and abiotic stresses because it correlates with resistance to all stresses except for photoperiod sensitivity. The second good marker for stress resistance is content of PAs. Total phenolic compounds and the activities of related enzymes are not good markers for stress resistance in sorghum grains.

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Section: Introductionmentioning

confidence: 99%

Impact of Phenolic Compounds and Related Enzymes in Sorghum Varieties for Resistance and Susceptibility to Biotic and Abiotic Stresses

et al. 2005

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“…Even though annual rainfall is similar across the administrative districts, the Okavango Delta is located in the Ngamiland district, which may contribute to the higher frequency of accessions showing anthracnose resistance from this region. Several studies have reported that annual rainfall is an important weather variable influencing disease severity (Néya & Le Normand 1998;Hess et al 2002;Ngugi et al 2002); however, other climatic conditions that would contribute to a greater leaf wetness period would also affect disease severity (Pande et al 1994) and may contribute to the variation observed between regions. Pathogenic diversity may also occur between regions (Marley et al 2001) and could contribute to the observed diversity in disease response for the germplasm from the different districts.…”

Section: Discussionmentioning

confidence: 99%

Anthracnose field evaluation of sorghum germplasm from Botswana

Erpelding¹

2011

Plant Prot. Sci.

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“…The Mopti region receives less than 800 mm of annual rainfall (Hess et al, 2002). Several studies have indicated that anthracnose infection severity is greater in regions receiving higher annual rainfall (Hess et al, 2002;Néya and Le Normand, 1998;Ngugi et al, 2002); thus, selection pressure may favor a higher frequency of anthracnose resistant germplasm in these wetter regions. Presumably, sorghum landraces from regions receiving low annual rainfall, such as the Mopti region, would show greater disease severity and a lower frequency of anthracnose resistant germplasm.…”

Section: Discussionmentioning

confidence: 99%

“…in Kabat and Bubák) is the fungal pathogen responsible for sorghum anthracnose (Crouch et al, 2006) and was first reported in Togo, West Africa in 1902 (Thakur and Mathur, 2000). The disease occurs worldwide, but is more commonly observed in tropical or subtropical environments where frequent rainfall, high relative humidity and warm temperatures enhance the development and spread of the disease (Casela et al, 2001;Hess et al, 2002;Marley et al, 2001;Néya and Le Normand, 1998;Ngugi et al, 2002;Thakur and Mathur, 2000;Thomas et al, 1996;Valério et al, 2005). In the United States, anthracnose is more prevalent in the Southern Plains and Southeastern States (Rosewich et al, 1998;Cardwell et al, 1989).…”

Section: Introductionmentioning

confidence: 99%

Field Assessment of Anthracnose Disease Response for the Sorghum Germplasm Collection from the Mopti Region

Erpelding¹

2010

American Journal of Agricultural and Biological Sciences

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Problem statement: Sorghum anthracnose (Colletotrichum sublineolum) is a highly variable pathogen and new sources of host plant resistance are required for the development of resistant sorghum varieties. Germplasm collections are an important source of host plant resistance and screening germplasm will be essential to identify new sources of resistance. Approach: The sorghum (Sorghum bicolor) collection from the Mopti region of Mali was inoculated with Colletotrichum sublineolum and evaluated for foliar anthracnose disease response in Isabela, Puerto Rico during the 2004 and 2005 growing seasons using a partially balanced lattice design with three replications. Results: A resistant response was observed for 45 of the 97 accessions in the collection and mean infection severity for the 52 susceptible accessions was 27.6%. An association was observed between resistance and the administrative district where the germplasm was collected. More than 50% of the accessions from the Bandiagara and Bankass districts showed a resistant response. The lowest frequency of resistant germplasm was observed for the Mopti district with 25% of the accessions showing a resistant response. The susceptible accessions from the Mopti district, however, showed the lowest mean infection severity. Approximately 44% of the accessions from the Douentza district showed a resistant response with the susceptible accessions showing the highest mean infection severity. These results suggest an association between annual rainfall and anthracnose resistance, with sorghum accessions from drier regions showing greater susceptibility. Anthracnose resistance also showed an association with sorghum race classification and race guinea accessions were more frequently resistant as compared to accessions classified as race durra or durra-bicolor. Conclusion: The results indicated that anthracnose resistant sorghum germplasm is frequent in the Mopti region of Mali and that ecogeographic origin and sorghum characterization information can be used to aid in germplasm selection or germplasm acquisition to identify anthracnose resistant sources.

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Responses of sorghum genotypes to leaf anthracnose (Colletotrichum graminicola) under field conditions in Burkina Faso

Cited by 22 publications

References 10 publications

Impact of Phenolic Compounds and Related Enzymes in Sorghum Varieties for Resistance and Susceptibility to Biotic and Abiotic Stresses

Impact of Phenolic Compounds and Related Enzymes in Sorghum Varieties for Resistance and Susceptibility to Biotic and Abiotic Stresses

Anthracnose field evaluation of sorghum germplasm from Botswana

Field Assessment of Anthracnose Disease Response for the Sorghum Germplasm Collection from the Mopti Region

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