scholarly journals First Report of Tar Spot on Orange Geiger, Cordia sebestena, Caused by Diatractium cordianum in Florida

Plant Disease ◽  
2008 ◽  
Vol 92 (8) ◽  
pp. 1250-1250 ◽  
Author(s):  
A. J. Palmateer ◽  
J. M. Pérez ◽  
R. A. Cating ◽  
R. C. Ploetz ◽  
M. A. Hoy
Keyword(s):  
Host Record ◽  
The United States ◽  
South Florida ◽  
Fluorescent Light ◽  
New Host ◽  
5.8S Rdna ◽  
Caribbean Islands ◽  
New Host Record ◽  
Tar Spot ◽  
Water Saturated

In July 2007, tar spot symptoms were observed on the leaves of orange Geiger, Cordia sebestena L. (Boraginaceae), in the landscape and a commercial nursery in Homestead, FL. The disease appears to be spreading and is locally severe. Symptoms were circular, slightly hypertrophied spots approximately 5 to 8 cm in diameter, which were slightly chlorotic on the abaxial surface and had numerous circular blackened stroma, 0.2 to 0.4 mm in diameter, on the adaxial surface. As leaves aged and yellowed, the areas around the spots remained pale green. Embedded in the stroma were numerous perithecia, 173 to 312 μm in diameter, circular to irregular in shape, with lateral necks as much as 200 μm long and 73 to 104 μm in diameter. Asci, 77 to 92 × 11 to 13 μm, contained elongate, two-celled ascospores, 50 to 61 × 3 to 5 μm that had a conspicuous constriction at the dividing cell wall. These dimensions and the pathogen's appearance matched closely with those published for Diatractium cordianum (Ellis & Kelsey) Syd (1). Young, symptomless leaves of C. sebestena were sprayed to runoff with a suspension of ascospores approximately 104 ml–1 that were harvested from affected leaves. Inoculated leaves were placed on water-saturated paper towels in petri plates and maintained in a growth chamber at 25°C with fluorescent light at 10 h day–1. Symptoms similar to those observed on affected trees in the landscape began to develop after 21 days and perithecia were evident after 28 days. An ITS 1, ITS 2, and 5.8s rDNA sequence was deposited in GenBank (Accession No. EU541488). A herbarium specimen was deposited at the U.S. National Fungus Collections (BPI No. 878441). This is a new host record for D. cordianum and is the first time the pathogen has been reported in the United States. Previous records were from Venezuela and several Caribbean islands, including Cuba and Jamaica. Symptoms of this disease have not been observed on Texas wild olive, Cordia boissieri, in close proximity to affected C. sebestena. P. F. Cannon (1) indicated that the disease had no economic impact. However, the conspicuous nature of symptoms on C. sebestena and the importance of this tree in the South Florida ornamental trade (2) suggest that this disease may become significant on the latter host. References: (1) P. F. Cannon. Mycol. Res. 92:327, 1989. (2) E. F. Gilman and D. G. Watson. Fact Sheet ST-182. Univ. Fla, Fla Coop Ext. Serv., 1993.

scholarly journals Descriptions of life-stages of Blastobasis repartella (Lepidoptera: Gelechioidea: Coleophoridae: Blastobasinae) and observations on its biology in switchgrass

Zootaxa ◽  
2010 ◽  
Vol 2656 (1) ◽  
pp. 41 ◽  
Author(s):  
D. ADAMSKI ◽  
P. J. JOHNSON ◽  
A. A. BOE ◽  
J. D. BRADSHAW ◽  
ALAN PULTYNIEWICZ
Keyword(s):  
Panicum Virgatum ◽  
Host Record ◽  
The United States ◽  
Wing Venation ◽  
Scanning Electron Micrographs ◽  
Life Stages ◽  
New Host ◽  
Male And Female ◽  
New Host Record ◽  
Panicum Virgatum L

Blastobasis repartella (Dietz) is a borer in the proaxis and basal nodes and internodes of above ground stems of Panicum virgatum L. (Poaceae). The adult and immature stages are described herein, including diagnoses of the adult and larva, as this insect may be easily confused with a closely related grass-feeding congener, Blastobasis graminea Adamski, which is also known to occur in the United States. The biology of B. repartella is described. Figures of the adult, illustrations of the male and female genitalia, wing venation, the chaetotaxy of the larva (supplemented with scanning electron micrographs), and pupa are provided. Bassus difficilis (Hymenoptera: Braconidae) is reported as a larval/pupal parasitoid of B. repartella. A new host record for Aethes spartinana (Barnes & McDunnough) (Lepidoptera: Tortricidae) is also reported.

scholarly journals Influence of Temperature, Light Intensity, and Isolate on the Development of Neofusicoccum parvum–Induced Dieback of Eugenia, Syzygium paniculatum

Plant Disease ◽  
2009 ◽  
Vol 93 (8) ◽  
pp. 804-808 ◽  
Author(s):  
Randy C. Ploetz ◽  
Jose M. Pérez-Martínez ◽  
Aaron J. Palmateer ◽  
Tara L. Tarnowski
Keyword(s):  
Late Summer ◽  
Host Record ◽  
South Florida ◽  
Seasonal Development ◽  
New Host ◽  
Neofusicoccum Parvum ◽  
Hurricane Wilma ◽  
New Host Record ◽  
Wide Range ◽  
Vascular Discoloration

Syzygium paniculatum (Myrtaceae) is an important plant in the South Florida ornamental industry. Known as eugenia in the trade, the plant was relatively free of diseases before Hurricane Wilma (2005). Since then, a serious dieback disease has become prevalent in local nurseries, especially during late summer. Symptoms included wilting and death of terminal and lateral branches, and vascular discoloration in dead and dying branches and the main stem. Several fungi were isolated from diseased plants, but Neofusicoccum parvum was usually the only fungus isolated from symptomatic tissue. Most isolates were sterile, but all that were tested produced significant (P < 0.05) dieback on, and reduced growth of, the cultivar Monterrey Bay. Glomerella spp. and a Pestalotiopsis sp. that were recovered from asymptomatic portions of diseased plants and Mycoleptodiscus terrestris recovered from healthy liners of Monterrey Bay did not cause dieback symptoms in pathogenicity studies or affect host growth. In incubator studies, N. parvum caused significant external symptoms, vascular discoloration, and mortality at 25 and 30°C; in general, only vascular symptoms developed at 20°C and no symptoms developed at 15°C. Thus, temperature may be associated with the seasonal development of this disease. Significant differences in disease development were not observed under a wide range of light intensities (2,000 to 300 μmol s-1 m-2). S. paniculatum is a new host record for N. parvum.

scholarly journals Occurrence of Amblyomma longirostre in Ramphastos dicolorus in Southern Brazil

2009 ◽  
Vol 39 (3) ◽  
pp. 930-932 ◽  
Author(s):  
João Fabio Soares ◽  
Claudia Dal Molin Soares ◽  
Miguel Gallio ◽  
Aleksandro Schafer da Silva ◽  
Juliana Pereira Moreira ◽  
...  
Keyword(s):  
Central America ◽  
Adult Stage ◽  
Rio Grande ◽  
Host Record ◽  
The United States ◽  
Neotropical Region ◽  
Southern Brazil ◽  
Rio Grande Do Sul ◽  
New Host ◽  
New Host Record

The species Amblyomma longirostre Koch, 1844 is poorly known in the state of Rio Grande do Sul. Usually the adult stage could be found on Sphigurus spp. and the immatures on birds (Passeriformes). Although A. longirostre is distributed in the Neotropical region, from Panama to Uruguay, it also occurs in Central America and the United States. The aim of this study was to report that Ramphastos dicolorus Linnaeus 1766 is a new host record for this tick species.

Addition to Micropeltidaceae: Micropeltis goniothalamicola sp. nov. and new record of Scolecopeltidium menglaense from Chiang Rai, Thailand

Phytotaxa ◽  
2021 ◽  
Vol 487 (1) ◽  
pp. 56-64
Author(s):  
DIANA S. MARASINGHE ◽  
SINANG HONGSANAN ◽  
SARANYAPHAT BOONMEE ◽  
NING XIE
Keyword(s):  
New Record ◽  
Sequence Data ◽  
Novel Species ◽  
Host Record ◽  
Its Sequence ◽  
New Taxon ◽  
Morphological Comparison ◽  
New Host ◽  
Mucilaginous Sheath ◽  
New Host Record

A novel species, Micropeltis goniothalamicola and a new record Scolecopeltidium menglaense were collected from Mae Fah Luang Botanical Gardens, Thailand. Our new taxon is different from other species in Micropeltis in having relatively smaller ascomata, 6–8-spored asci and 4–5-septate ascospores covering with mucilaginous sheath. Our new record, S. menglaense is the first host recorded from Jasmine grandiflorum (Oleaceae). Morphological comparison coupled with phylogenetic analysis of combined LSU and ITS sequence data provide evidence for the new species and new host record.

New Host Record and Distribution of Dicarnosis ripariensis Kerrich1 in Mexico

2021 ◽  
Vol 46 (1) ◽  
Author(s):  
J. Refugio Lomeli-Flores ◽  
Jimena Lima-Espindola ◽  
Héctor González-Hernández ◽  
Esteban Rodríguez-Leyva ◽  
Julio C. Velázquez-Gonzalez
Keyword(s):  
Host Record ◽  
New Host ◽  
New Host Record

scholarly journals Some digenea parasites of tunny from the coast of Rio de Janeiro State, Brazil

2002 ◽  
Vol 62 (3) ◽  
pp. 453-457 ◽  
Author(s):  
B. M. M. FERNANDES ◽  
A. KOHN ◽  
A. L. SANTOS
Keyword(s):  
South America ◽  
Rio De Janeiro ◽  
Host Record ◽  
Thunnus Albacares ◽  
New Host ◽  
Katsuwonus Pelamis ◽  
New Host Record ◽  
Auxis Thazard ◽  
First Time ◽  
Janeiro State

Rhipidocotyle pentagonum (Ozaki, 1924) is reported for the first time in South America parasitizing Auxis thazard and in a new host Katsuwonus pelamis. Tergestia laticollis (Rudolphi, 1819) is reported for the first time in South America and in Thunnus albacares, representing a new host record. Copiatestes filiferus (Leuckart, in Sars, 1885) is recorded for the first time in Brazil and in Thunnus albacares, another new host record. Tetrochetus coryphaenae (Yamaguti, 1934) is presented for the first time in Brazil parasitizing Thunnus albacares.

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