Two Pathotypes of Xanthomonas oryzae pv. Oryzae Virulence Identified in West Africa

Onasanya, A.; Ekperigin, M. M.; Nwilene, F. E.; Séré, Y.; Onasanya, R.O.

doi:10.3923/crb.2009.22.35

Cited by 16 publications

(31 citation statements)

References 15 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Some strains overcome the resistance of the near isogenic line IRBB5 with gene Xa-5. This confirms results reported by Onasanya et al (2009) who found IRBB5 susceptible to bacteria strains from 7 African countries. Hoang et al (2008) also observed differential reactions of rice lines to strains in Mekong Delta.…”

Section: Discussionsupporting

confidence: 90%

“…Several research works on the interactions between strains of X. oryzae pv. oryzae and rice genotypes have been widely documented (Belkhadir et al, 2004;Lim and Kunkel, 2004;Gu et al, 2005;Ouedraogo et al, 2007;Onasanya et al, 2009). Differential reactions of rice lines to X. oryzae pv.…”

Section: Discussionmentioning

confidence: 99%

“…The reactions of differential genotypes were presented as the means of lesion length due to each of the Xoo strains used. For each strain, the reaction of genotypes were classified referring to the methods used by Sanchez et al (2000), Lee et al (2003) and Onasanya et al (2009): resistant (R) -lesion length < 12.5% and susceptible (S) -lesion length > 12.5%.…”

Section: Data Assessment and Managementmentioning

confidence: 99%

“…Unfortunately, its production is reduced by many biotic constrains among which Bacterial leaf blight of rice, caused by Xanthomonas oryzae pv. oryzae (Xoo) (Liu et al, 2007;Onasanya et al, 2009), is one of the most widespread and destructive diseases of rice in several countries in tropical rice-growing areas including Africa (Séré et al, 2005;Ouedraogo et al, 2007;Onasanya et al, 2009;Déwa et al, 2011). Bacterial leaf blight of rice was observed to occur in fields with high incidence of 70 to 80% in several West African countries (Séré et al, 2005).…”

Section: Introductionmentioning

confidence: 99%

“…Studies of the resistance of rice varieties have been undertaken (Séré et al, 2005;Ouedraogo et al, 2007;Onasanya et al, 2009). However, investigation on the resistance of rice varieties to bacterial leaf blight has never been initiated in Togo.…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

Evaluation of rice genotypes resistance to bacterial leaf blight in Togo

Banito¹,

Kadai²,

Onasanya³

et al. 2012

Int. J. Bio. Chem. Sci

View full text Add to dashboard Cite

The present study aimed to evaluate rice genotypes for resistance to bacterial leaf blight caused by Xanthomonas oryzae pv. oryzae. Twenty-one genotypes including six genotypes grown in Togo, two improved genotypes from Africa Rice and thirteen isogenic lines from IRRI were tested. The results revealed differential reactions of genotypes in the expression of the disease. Additive main effect and multiplicative interaction analysis allowed identifying three groups of genotypes according to the level of the disease expression: resistant group made up of the genotype IR24 and all the twelve near isogenic lines tested except the line IRBB5, medium resistant group made up of three genotypes grown in Togo (NERICA4, NERICA8 and NERICA14), the genotype Giganté from AfricaRice, and susceptible group including five genotypes from ITRA (TGR203 and IR841), from AfricaRice (NERICA19 and TOG5681) and the near isogenic line IRBB5 from IRRI. The results provided useful information indicating that none of the grown varieties tested was resistant to BLB, thus revealing a potential risk of epidemics since these genotypes were only medium resistant to susceptible. However, experiments under field conditions in different environments of Togo are needed.

show abstract

Section: Discussionsupporting

confidence: 90%