scholarly journals Efficacy Of Selected Plant Extracts Against Bean Rust Disease (Uromyces appendiculatus) On French Beans (Phaseolus vulgaris L.)

2010 ◽  
Vol 5 (1) ◽  
Author(s):  
EO Monda ◽  
DO Asanga ◽  
PO Okemo ◽  
A Ndegwa ◽  
MR Mariita
Keyword(s):  
Phaseolus Vulgaris ◽  
Plant Extracts ◽  
Uromyces Appendiculatus ◽  
Bean Rust ◽  
Phaseolus Vulgaris L ◽  
Rust Disease ◽  
French Beans

scholarly journals Evaluación de la resistencia a la roya (Uromyces appendiculatus) en 64 variedades de frijol común en Cuba.

2016 ◽  
Vol 7 (1) ◽  
pp. 90
Author(s):  
Miguel González ◽  
Evelio García
Keyword(s):  
Phaseolus Vulgaris ◽  
Uromyces Appendiculatus ◽  
Common Beans ◽  
Bean Rust ◽  
Phaseolus Vulgaris L ◽  
The North

The varieties (64) of common beans (Phaseolus vulgaris L.) were evaluated for resistance to bean rust in the Velasco zone, at the north of the Holguín province, Cuba. The evaluation was made 60 days after sowing by determining the degree of attack using a scale as well as estimating the number of pu stules per leaf and no remarkable differences between both methods were found. The character of the pustules was also determined by measuring their diameters with regard to three categories large (more than 0.5 mm) middling (between 0.3 and 0.5 mm) and small (less than 0.3 mm) and the presence or lack of chlorotic halo surrounding the pustules as well. The cultivars that resulted less attacked by the bean rust were Guira-35, XAN-43, Revolución-79, M-112, Rosas, BAT-202, Tazumal, Huetar, Bolita-42, BAT-1281, BAT-1274, BAT-1280, PV-555, BAT 1275, Engañador, Guamá- 23, MCD-254, Chevere, XAN-93, XAN-147, NAG-20, NAG-55, RAB-30 and CC 25-9-S (R), all of which showed an average equal or inferior to 10 pustules per leaf, being these ones generally smaller and without any chlorosis.

First Report of Bean Rust Caused by Uromyces appendiculatus Race 19-63 in Puerto Rico

2009 ◽  
Vol 10 (1) ◽  
pp. 46 ◽  
Author(s):  
Byron Vega ◽  
James S. Beaver ◽  
Consuelo Estévez de Jensen ◽  
James R. Steadman
Keyword(s):  
Puerto Rico ◽  
Phaseolus Vulgaris ◽  
Common Bean ◽  
Western Hemisphere ◽  
Uromyces Appendiculatus ◽  
Bean Rust ◽  
Phaseolus Vulgaris L ◽  
First Report ◽  
New Race ◽  
Important Disease

Bean rust caused by Uromyces appendiculatus (Pers.) Unger is an important disease in common bean (Phaseolus vulgaris L.) worldwide. To our knowledge this is the first report of a new race of U. appendiculatus (19-63) in Puerto Rico and in the western hemisphere. Accepted for publication 4 February 2009. Published 25 March 2009.

scholarly journals Isolates of Uromyces appendiculatus with Specific Virulence to Landraces of Phaseolus vulgaris of Andean Origin

Plant Disease ◽  
1999 ◽  
Vol 83 (2) ◽  
pp. 108-113 ◽  
Author(s):  
Craig M. Sandlin ◽  
James R. Steadman ◽  
Carlos M. Araya ◽  
Dermot P. Coyne
Keyword(s):  
Phaseolus Vulgaris ◽  
Rapd Analysis ◽  
Random Amplified Polymorphic Dna ◽  
Rust Fungus ◽  
Distinct Group ◽  
Uromyces Appendiculatus ◽  
Bean Rust ◽  
Banding Patterns ◽  
Highly Virulent ◽  
Specific Virulence

Five isolates of the bean rust fungus Uromyces appendiculatus were shown to be specifically virulent on bean genotypes of Andean origin. This specificity was demonstrated by the virulence of five pairs of isolates on a differential set of 30 Phaseolus vulgaris landraces. Each isolate pair was from a different country in the Americas and consisted of one Andean-specific isolate and one nonspecific isolate. Of the differential P. vulgaris landraces, 15 were of Middle American origin and 15 were of Andean origin. The Andean-specific rust isolates were highly virulent on Andean landraces but not on landraces of Middle American origin. Rust isolates with virulence to Middle American landraces were also generally virulent on Andean material; no truly Middle American-specific isolates were found. Random amplified polymorphic DNA (RAPD) analysis of the rust isolates also distinguished the two groups. Four of the Andean-specific rust isolates formed a distinct group compared to four of the nonspecific isolates. Two of the isolates, one from each of the two virulence groups, had intermediate RAPD banding patterns, suggesting that plasmagomy but not karyogamy occurred between isolates of the two groups.

A Molecular Approach to Distinguish the Bean Rust and Siratro Rust Pathogens

1991 ◽  
Vol 39 (6) ◽  
pp. 527 ◽  
Author(s):  
KS Braithwaite ◽  
JM Manners ◽  
DJ Maclean ◽  
JAG Irwin
Keyword(s):  
Rust Fungus ◽  
Repeat Unit ◽  
Uromyces Appendiculatus ◽  
Bean Rust ◽  
Rust Disease ◽  
Dna Repeat ◽  
Total Dna ◽  
Macroptilium Atropurpureum ◽  
Genomic Probes ◽  
Rust Pathogens

Rust disease on the tropical pasture legume Macroptilium atropurpureum (siratro) is caused by Uromyces appendiculatus var. crassitunicatus. This pathogen was believed to be closely related to the bean (Phaseolus vulgaris) rust pathogen Uromyces appendiculatus var. appendiculatus. The genetic relationship between these two fungi was investigated. Total DNA hybridisations indicated that little homology exists between the high copy genomic DNA of these two rust fungi. Random genomic probes cloned from the bean rust fungus detected extensive Polymorphisms between the two, with only one probe from 17 being monomorphic. The ribosomal DNA repeat unit was also distinguished by RFLPs. It was calculated from the RFLP data that the bean rust fungus and the siratro rust fungus share only 8-14% sequence homology. The results indicate that the two fungi, although morphologically very similar, are not closely related genetically.

scholarly journals Phenotypic and Genotypic Characterization of Uromyces appendiculatus from Phaseolus vulgaris in the Americas

Plant Disease ◽  
2004 ◽  
Vol 88 (8) ◽  
pp. 830-836 ◽  
Author(s):  
C. M. Araya ◽  
A. T. Alleyne ◽  
J. R. Steadman ◽  
K. M. Eskridge ◽  
D. P. Coyne
Keyword(s):  
Phaseolus Vulgaris ◽  
Central America ◽  
Random Amplified Polymorphic Dna ◽  
Parallel Evolution ◽  
Uromyces Appendiculatus ◽  
Bean Rust ◽  
Rapd Pcr ◽  
Polymerase Chain ◽  
Clear Differentiation

Populations of 90 Uromyces appendiculatus isolates were collected from throughout the Americas and evaluated for virulence on 19 standard bean rust differentials, and also on 12 landraces of Phaseolus vulgaris from South and Central America. The landrace differentials represented geographical centers of bean domestication. Three groups were observed. Two groups were isolates from centers of bean domestication and a third heterogeneous group comprised isolates from countries in South and Central America. Molecular analysis using random amplified polymorphic DNA-polymerase chain reaction (RAPD-PCR) was also conducted on these isolates. Cluster analysis of the molecular profiles showed three groups that corresponded to those obtained by virulence tests. These results show a clear differentiation of the pathogen population along similar lines as its host and suggest parallel evolution in the bean rust pathosystem.

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