First Report of Lentil Anthracnose (Colletotrichum truncatum) in the United States.

Venette, J. R.; Lamey, H. A.; Lamppa, R. L.

doi:10.1094/pd-78-1216d

Cited by 14 publications

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“…The work reported in the current paper examined the infection process of two isolates of C . truncatum causing anthracnose of economic importance in lentil ( Lens culinaris ; Morrall, 1988; Venette et al ., 1994; Kaiser et al ., 1998) and broad bean ( Vicia faba ; Buchwaldt et al ., 1996) and compared them with stages in the disease cycle of anthracnose caused by C . destructivum from lucerne and cowpea.…”

Section: Introductionmentioning

confidence: 99%

Localized hemibiotrophy in Colletotrichum: cytological and molecular taxonomic similarities among C. destructivum, C. linicola and C. truncatum

Latunde‐Dada

Lucas

2007

Plant Pathology

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The infection process of hemibiotrophic isolates of Colletotrichum linicola (from flax, Linum usitatissimum ) and C . truncatum (from broad bean, Vicia faba and lentil, Lens culinaris ) was studied by light microscopy. Host surfaces were penetrated directly leading to a symptomless, biotrophic phase characterized by the elaboration of large multilobed, multiseptate, vesicular primary hyphae that were restricted to the initially infected epidermal cells. Biotrophy lasted for the first 48 h of the host-pathogen interaction and was rapidly succeeded by a necrotrophic phase during which narrow, secondary hyphae invaded the surrounding leaf tissues and water-soaked spreading lesions with sporulating, monosetate acervuli were produced on infected host surfaces. Molecular taxonomic analysis of the nucleotide sequences of the amplified D2 and ITS-2 regions of rDNA revealed very close similarities (97-99%) between these isolates and those of C . destructivum obtained from cowpea ( Vigna unguiculata ) and lucerne ( Medicago sativa ), and also of C . truncatum obtained from pea ( Pisum sativum ). This association was consistent with results from a comparative assessment of some in-planta and in-vitro morphological and growth characteristics of these hemibiotrophic fungi. It was concluded that localized hemibiotrophy is an infection strategy utilized predominantly by a closely-related group of pathogens comprising C . destructivum , C . linicola and C. truncatum , and the formation of multilobed primary hyphae restricted to the first penetrated cell might therefore be a key taxonomic character which correlates consistently with ITS sequence data.

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Section: Introductionmentioning

confidence: 99%

Localized hemibiotrophy in Colletotrichum: cytological and molecular taxonomic similarities among C. destructivum, C. linicola and C. truncatum

Latunde‐Dada

Lucas

2007

Plant Pathology

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“…Moore is a relatively new foliar disease in North America and was first discovered in Manitoba in 1987 (Morrall 1988) and in Saskatchewan in 1990 (Morrall and Pedersen 1991). The disease spread southward and was first reported in North Dakota in 1992 (Venette et al 1994). Anthracnose is one of the most important constraints for production of lentil in North America and can cause up to 100% yield loss in the worst scenarios where short crop rotations, frequent rainfall and high humidity prevail (Gibson et al 1991;Buchwaldt et al 1992).…”

Section: Introductionmentioning

confidence: 99%

Sources of Resistance to Anthracnose (Colletotrichum truncatum) in Wild Lens Species

Tullu

Buchwaldt

Lulsdorf

et al. 2005

Genet Resour Crop Evol

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Lentil anthracnose (Colletotrichum truncatum (Schwein.) Andrus et W.D. Moore is a potential threat in many lentil (Lens culinaris Medik.) production regions of North America. In the lentil germplasm maintained in Germany and North America, 16 lines were reported to have resistance to race Ct1, but none has resistance reported to race Ct0. The objective of this study was to examine accessions of wild Lens species for their resistance to races Ct1 and Ct0 of lentil anthracnose. Five hundred and seventy-four wild accessions of six species and control lines were screened in two replications under both field and greenhouse conditions using a 1-9 scoring scale (1, highly resistant; 2-3, resistant; 4-5, moderately resistant; 6-7, susceptible; and 8-9, highly susceptible). Indianhead and PI 320937 were resistant while Eston and Pardina were susceptible to race Ct1 as expected. However, none of the check lines were resistant to race Ct0. Among the six Lens wild species tested, accessions of Lens ervoides (Brign.) Grande had the highest level of resistance, 3-5 to race Ct1 and Ct0 followed by L. lamottei Czefr. in the field and greenhouse. Lens orientalis (Boiss.), L. odemensis L., L. nigricans (M. Bieb.) Godron and L. tomentosus L. were highly susceptible, 8-9 to race Ct0 in the greenhouse. The highest frequency of resistance, especially in L. ervoides (Brign.) Grande, was found in accessions originating from Syria and Turkey. The usefulness of these L. ervoides (Brign.) Grande accessions as sources of resistance to the more virulent race of anthracnose in a lentil breeding program is discussed.

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“…In Canada, the disease was first reported in the province of Manitoba in 1987 (Morrall 1988). A few years later it was found in both Saskatchewan (Morrall and Pedersen 1991) and North Dakota, United States (Venette et al 1994). Anthracnose of lentil has also been reported from Bulgaria, Morocco, Ethiopia, Syria, Pakistan, Bangladesh and Brazil (Bellar and Kebabeh 1983;Baldanzi et al 1988;Morrall 1997;Kaiser et al 1998).…”

Section: Introductionmentioning

confidence: 99%

New sources of resistance to Colletotrichum truncatum race Ct0 and Ct1 in Lens culinaris Medikus subsp. culinaris obtained by single plant selection in germplasm accessions

Shaikh

Diederichsen

Harrington

et al. 2012

Genet Resour Crop Evol

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Anthracnose caused by the fungal pathogen Colletotrichum truncatum is a severe disease of lentil (Lens culinaris Medikus subsp. culinaris) causing premature defoliation and deep penetrating lesions on the stems leading to wilting and plant death. A total of 579 accessions from 20 countries were obtained from four germplasm collections in Russia, Poland, Bulgaria and Hungary. The accessions were collected between 1923 and 1988 and comprised mostly landraces. Consequently, many of the resistant entries contained susceptible plants which necessitated one or two cycles of selection of individual resistant plants for selfing and re-testing with the pathogen. Under controlled environmental conditions, plants of each accession were inoculated at early flower with C. truncatum race Ct0 (isolate 95A8) and race Ct1 (isolate 95B36), separately. Scoring of symptoms included number of lesions on the main stem, lesion penetration into the stem and amount of wilting. Resistance was obtained by single plant selection in 23 lentil accessions (4.0 %). Fifteen lines were generated with resistance to race Ct1 (2.6 %), seven with resistance to race Ct0 (1.2 %), and one line with resistance to both races. This is the first report on resistance in L. culinaris to C. truncatum race Ct0 as well as to the two races combined. Seed of homozygous resistant lines can be requested from the corresponding author, and are labeled with their original accession number with the prefix either-Ct0,-Ct1 or-Ct0Ct1 indicating resistance to one or both races of C. truncatum.

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First Report of Lentil Anthracnose (Colletotrichum truncatum) in the United States.

Cited by 14 publications

References 0 publications

Localized hemibiotrophy in Colletotrichum: cytological and molecular taxonomic similarities among C. destructivum, C. linicola and C. truncatum

Localized hemibiotrophy in Colletotrichum: cytological and molecular taxonomic similarities among C. destructivum, C. linicola and C. truncatum

Sources of Resistance to Anthracnose (Colletotrichum truncatum) in Wild Lens Species

New sources of resistance to Colletotrichum truncatum race Ct0 and Ct1 in Lens culinaris Medikus subsp. culinaris obtained by single plant selection in germplasm accessions

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