Elsinoë mangiferae Bitanc. & Jenkins, Arquivos do Instituto Biológico de São Paulo () [MB#]. Species of Elsinoë are phytopathogens causing scab and spot Notes: Elsinoë mangiferae was described by Bitancourt & Jenkins () as. mango scab. Elsinoe mangiferae Bitancourt & Jenk. About This Subject · View Images Details · View Images. 0 Images. Search.
|Published (Last):||25 January 2017|
|PDF File Size:||13.53 Mb|
|ePub File Size:||12.51 Mb|
|Price:||Free* [*Free Regsitration Required]|
Disease symptoms are often easily recognisable, and referred to as signature-bearing diseases, for the cork-like appearance of older infected ellsinoe with scab-like appearance. Additionally the infected plants may also mxngiferae mild to severe distortions of infected organs.
A total of 13 species are epitypified with notes on their taxonomy and phylogeny. These are often raised, exhibiting cracks, and hence are referred to as scabs. Spot anthracnose was an alternative name recommended by Jenkins Some hosts develop severe distortions of infected organs, such as stem elongation in cassava, or twisting of infected stems of Elsinle spp.
Although scab symptoms are easily recognised, examination of specimens collected in the field is often frustrating because of the lack of fertile structures. Economically important diseases include avocado scab caused by E. They generally have crustose to pulvinate, irregular ascostromata, in which the scattered asci are irregularly arranged in individual locules.
Subsequent treatments by other workers again saw an increase in the number of families, with Barr originally recognising seven, and later five Eriksson and Hawksworth,Barr, Woronichin treated this family as a synonym of Plectodiscellaceae based on a single species Plectodiscella piriwhich he found occurring on the leaves of apple and pear. Based on observations of their restricted hosts, Barr,Barr, and Eriksson suggested that Elsinoaceae and Myriangiaceae should be maintained as two separate families in the Myriangiales.
It is characterised by forming scab-like lesions with pseudoascostromata containing three to eight bitunicate asci inside each locule. Asci are saccate to globose with eight hyaline, oblong or fusiform, septate ascospores Fig. The asexual morph is the acervular coelomycetous Sphacelomawhich has polyphialidic conidiogenous cells and hyaline, ellipsoid, aseptate conidia.
Ex-type sequence data is, however, available for only a few species. Additionally, an effort was conducted by R.
Barreto to recollect scab fungi described in the past in Brazil allowing for epitypification of taxa lacking pure cultures. Jenkins were collected but also included other south-eastern and southern Brazilian states, mostly in but with ad hoc collections continuing in later years. DNA sequences generated by each primer combination were used to obtain consensus sequences using SeqMan v. The branches of zero length were collapsed and all equally most parsimonious trees were saved.
There was a problem providing the content you requested
Myriangium hispanicum CBS Phylograms were viewed using FigTree v. Descriptions of the sexual morph are based on host material, while those of manbiferae asexual morph are based on sporulating cultures Fig. Structures were mounted in clear lactic acid, and 50 measurements determined per structure, with extremes of conidial measurements given in parentheses. Adobe Bridge CS v. MP analyses generated one tree, which is presented in Fig. The branches with significant Bayesian posterior probabilities BPP equal to or above 0.
The scale bar represents 90 nucleotide changes. Ex-type strains are in bold. New species and ex-epitypes are in blue. All strains proposed as new species and for epitypification based on the multi-gene phylogeny were studied morphologically. Type details and notes on the host range and geographic distribution of previously described species are also included.
Pilze Java’s Jakarta 1: Plant pathogenic, causing scab, leaf and fruit spot and anthracnose disease. Ascostromata solitary, aggregated, or gregarious, wart-like, or as small distinctively coloured elevations, or pulvinate, immersed to semi-immersed, globose to mangiefrae, white, pale yellow or brown, soft, multi-loculate, locules scattered in upper part of ascostromata, cells of ascostromata comprising pseudoparenchymatous cells of textura globulosa to angularis.
Locules with elzinoe to numerous asci inside each locule, ostiolate. Ostiole minute, periphyses absent. Asci 8-spored, bitunicate, fissitunicate, saccate mangifegae globose, with a minute pedicel, and ocular chamber. Ascospores irregularly arranged, oblong or fusiform with slightly acutely rounded ends, with 2—3 mangiferse septa, hyaline, smooth-walled, lacking a sheath. Acervuli or sporodochia subepidermal, pseudoparenchymatous.
Conidiophores hyaline to pale-brown, polyphialidic.
Conidiogenous cells formed directly from the upper cells of the pseudoparenchyma, mono- to polyphialidic, integrated or discrete, determinate, hyaline to pale brown, without visible periclinal thickening.
Kramer, deposited by A. Bitancourt ex-type culture CBS The LSU region fails to distinguish E. Brazilfrom Vitis viniferaA. Jenkins culture CBS This pathogen has been reported worldwide, but nangiferae fresh collections to facilitate epitypification on Vitis viniferaWestern Europe.
IndiaLonavla, from Anacardium occidentaleOct. Thirumalachar ex-type culture CBS Thirumalachar culture CBS Symptoms include numerous greyish white leaf spots on the lower leaf surface, 0. The fact that the isolates studied here originate from completely distinct host families, suggests that there could have been some confusion during the culturing and subsequent deposit of these cultures.
This matter can only be resolved eleinoe on fresh collections, as it appears highly unlikely that the same species could cause disease on these diverse elsonoe. USAfrom Annona sp. Salemink culture CBS Allen, IMA Fungus 7: In culture PDA colonies are slow-growing, compact, convoluted, light vinaceous mangfierae with darker areas eleinoe black and humid margins.
Bitancourt ex-isotype culture CBS Symptoms include numerous leaf spots, round or irregular, protruding, often amphigenous, or even perforated, 0. The disease affects leaves, petioles and stems and develops into typical scab symptoms. The authors also included information on colonies formed in pure culture PDA: Disease symptoms on Asclepias mellodora. Named after the host elsinoee from which it was collected, Asclepias. Lesions on branches, petioles, fruits and leaves along veins, occasionally spreading to the lamina, elliptical to irregular, raised and purplish brown at margins and greyish centrally, coalescing and developing typical scab symptoms on older infected areas, occasionally leading to the distortion of affected organ, defoliation and death of severely infected stems.
EPPO Global Database
Conidia hyaline, granular, aseptate, ellipsoid, apex obtuse, sometimes constricting at base to a subtruncate locus, 4— 4. The morphological distinction, even if unsupported by molecular analysis, is regarded here as sufficient to allow the proposal of the new species E. ArgentinaTucuman, from Citrus aurantiumdeposited by C.
Brazilfrom Citrus aurantiumA. Jenkins culture ex-isotype of Sphaceloma fawcettii var. The culture CBS The ITS region fails to distinguish E. Conidiogenous cells and conidia. AustraliaVictoria, Longford, on leaves and stems of Banksia prionotes5 Aug.
IndiaMahabaleshwar, from Barleria gibsoniiMar. Disease symptoms of E. Brazilfrom Bidens pilosaJan. Symptoms include dark, irregular or elongated lesions, 0. The description provided in the original publication is rather incomplete and based on a seemingly sterile specimen.
mango scab, Elsinoe mangiferae Myriangiales: Elsinoaceae
Depending on intensity, leading to distortions of growing stems that may become sinuous or twisted and accompanied by defoliation and die-back of organs above infected areas.
The culture CPC was isolated from the same host in Brazil, and therefore we designate it here as ex-epitype.
The complex of species reported on Chamaesyce spp. Additionally host specificity tended to vary between isolates from a single host and was also inadequate as a basis for species separation. Based on their results these authors proposed that the fungus attacking C. These authors also accepted Sphaceloma poinsettiae as a separate taxon having Euphorbia heterophylla and Eu. This is in disagreement with the present study.
Brazilfrom Centrolobium robustumFeb. Symptoms include small, rounded or slightly irregular leaf spots, torn when larger, causing deformations, 0. Disease symptoms on Citrus limon. Named after the host genus from which it was collected, Citrus.
Lesions on fruits, leaves and young stems: Conidia hyaline, granular, aseptate, ellipsoid, apex obtuse, sometimes constricting at base to a subtruncate locus, 5.
Brazilfrom Citrus limonDec. Symptoms include depressed, elongated hypophyllous leaf spots. This fungus is characterised by hyaline, ellipsoid to oblong or subglobose conidia, 1. Brazilfrom Diospyros kakiMayA. The asexual morph is described as sporodochial, but no conidia were observed.