First report of the main vector of Dutch elm disease Scolytus multistriatus (Marsham, 1802) on elm and poplar trees in Lebanon (Coleoptera, Curculionidae, Scolytinae)

2018 ◽  
Vol 123 (4) ◽  
pp. 429-434
Author(s):  
Zinette Moussa ◽  
Abdo Tannouri
Keyword(s):  
Dutch Elm Disease ◽  
Scolytus Multistriatus ◽  
First Report ◽  
Poplar Trees

Scolytus multistriatus. [Distribution map].

1975 ◽  
Author(s):  
Keyword(s):  
North America ◽  
Geographical Distribution ◽  
Bark Beetle ◽  
Host Plants ◽  
Dutch Elm Disease ◽  
Scolytus Multistriatus ◽  
Distribution Map ◽  
Elm Bark Beetle ◽  
New Distribution ◽  
Distribution In Europe

Abstract A new distribution map is provided for Scolytus multistriatus (Marsham) (Col., Scolytidae) (Smaller Elm Bark-beetle) (A vector of Dutch elm disease). Host Plants: Ulmus spp. Information is given on the geographical distribution in EUROPE (excl. USSR), Austria, Belgium, Britain, Bulgaria, Corsica, Czechoslovakia, France, Germany, Greece, Hungary, Italy, Netherlands, Poland, Portugal, Rumania, Spain, Switzerland, Yugoslavia, ASIA (excl. USSR), Iran, USSR, AFRICA, Algeria, Egypt, NORTH AMERICA, Canada, U.S.A.

scholarly journals First Report of Cytospora Canker Caused by Cytospora chrysosperma on White Poplar in Israel

Plant Disease ◽  
2004 ◽  
Vol 88 (2) ◽  
pp. 220-220 ◽  
Author(s):  
Z. Madar ◽  
Z. Solel ◽  
M. Kimchi
Keyword(s):  
Potato Dextrose Agar ◽  
Populus Alba ◽  
New Disease ◽  
White Poplar ◽  
First Report ◽  
Cytospora Chrysosperma ◽  
Poplar Trees ◽  
Dark Green ◽  
Cytospora Canker ◽  
The U.S

A new disease, causing death of mature white poplar trees (Populus alba L.), was observed in Hulla Valley in northern Israel in the summer of 2002. The affected branches turned yellowish brown, and the inner bark turned black. The bark dried out and separated from the underlying wood. Later, copious, dark pycnidia developed on the dead bark. The pycnidia had a diameter of 650 µm (n = 50), ranging 600 to 800 µm. Under moist conditions, spore masses oozed out in long, reddish brown, coiled tendrils. The spores were hyaline, one-celled, and slightly curved, 1.1 × 5.5 µm (5.0 to 6.0 µm) (n = 100), and somewhat smaller than those reported by Schreiner (1). A herbarium specimen was deposited at the U.S. National Fungus Collections (BPI 843390). Isolations made from affected branches yielded colonies of Cytospora chrysosperma (Pers.:Fr.)Fr. with a whitish orange mycelium that turned dark green 11 days later. Its growth rate on potato dextrose agar at 25°C was 7.1 mm per day. Exposure to daylight induced pycnidial development after 3 to 4 weeks. Inoculation of eight 1-year-old seedlings of white poplar and willow (Salix acmophylla Boiss) proved the pathogenicity of several isolates of C. chrysosperma. The average canker length at 28 days after inoculation was 28.0 and 14.5 cm on white poplar and willow, respectively, indicating the higher susceptibility of P. alba. No cankers developed on the control seedlings. Reisolations from inoculated plants yielded C. chrysosperma. To our knowledge, this is the first report of Cytospora canker on white poplar in Israel. Reference: (1) E. J. Schreiner. Am. J. Bot.18:1, 1931.

First report on the Dutch elm disease pathogen Ophiostoma novo-ulmi from Latvia

2020 ◽  
pp. e12601
Author(s):  
Ilze Matisone ◽  
Kristīne Kenigsvalde ◽  
Astra Zaļuma ◽  
Natālija Burņeviča ◽  
Ilze Šņepste ◽  
...  
Keyword(s):  
Dutch Elm Disease ◽  
First Report

Scolytus multistriatus associated with Dutch elm disease on the island of Gotland: phenology and communities of vectored fungi

2016 ◽  
Vol 15 (6) ◽  
Author(s):  
Audrius Menkis ◽  
Inga-Lena Östbrant ◽  
Kateryna Davydenko ◽  
Remigijus Bakys ◽  
Maksims Balalaikins ◽  
...  
Keyword(s):  
Dutch Elm Disease ◽  
Scolytus Multistriatus

scholarly journals First Report of Elm Canker Caused by Pestalotiopsis mangiferae in the United States

Plant Disease ◽  
2013 ◽  
Vol 97 (3) ◽  
pp. 426-426 ◽  
Author(s):  
J. S. Patel ◽  
D. Norman ◽  
M. Brennan ◽  
G. S. Ali
Keyword(s):  
Block Design ◽  
The United States ◽  
Dutch Elm Disease ◽  
Its Sequencing ◽  
Causal Organism ◽  
First Report ◽  
Conidial Morphology ◽  
Agar Plug ◽  
The World ◽  
The U.S

Chinese elm (Ulmus parvifolia Jacq.) is native to China, Korea, and Japan and was introduced to the U.S. to replace the American elm, which is highly susceptible to Dutch elm disease. Cultivar Emmer II trademark Allee elm (or Allee elm) is preferred by nurseries for its rich green foliage and beauty of bark. In the summer of 2011, a new disease was observed on Allee elm at a tree farm in FL. Approximately 1% of elms in the same farm and in residential areas in central Florida had similar canker-like symptoms consisting of tan to orange patches of decomposed and loose bark. These symptoms were observed on the main trunks often extending into branches of affected trees. Cankered sections of the trunk were often several feet in length and penetrated the wood to a depth just under the bark into the phloem. To isolate the causal organism, cankers were gathered from 7 trees and tissues from the margin of 1 to 3 cankers per tree were surface sterilized in 1% sodium hypochlorite, plated on PDA, and incubated at 22°C under a 16-h/8-h light/dark cycle for 7 days. Colonies displayed white, fluffy mycelium with sporadic black acervuli containing aggregated conidia. Conidia were 5-celled with two or more apical appendages or hairs; the three central cells were dark brown and the two outer cells were hyaline (1). Based on conidial morphology, these isolates were putatively identified as Pestalotiopsis spp. To identify the species, the rDNA internal transcribed spacer (ITS) region was sequenced for two field isolates (GenBank Accessions JX999998 and JX999999). A BLASTn search in GenBank revealed 100% identity to Pestalotiopsis mangiferae ITS (JX305704.1). To test Koch's postulates, experiments were performed in the field and greenhouse. A mycelial plug of isolate 11-40 was grown on PDA, inoculated on wounded trunk of healthy 18-month-old Allee elms (n = 48) in the field and 7-month-old Allee elms (n = 12) in the greenhouse. Both experiments were set up as a randomized complete block design. The trunk of each tree was wounded with a scalpel to a depth of 5 mm, the wound was inoculated with a 5-mm2 agar plug from a 7-day PDA culture, and the inoculated wound was wrapped with grafting tape. Plants that served as negative controls [n = 20 (field experiment) and n = 12 (greenhouse)] were mock-inoculated with a sterile PDA plug without mycelial growth. After 4 to 6 months, symptoms consisting of loose or fallen off bark developed on all pathogen-inoculated trees but not on control trees. Control wounds healed with no expansion beyond the original 5 mm inoculation zone, whereas Pestalotiopsis-inoculated cankers expanded to 3 to 8 cm in each direction in 6 months. Pestalotiopsis (confirmed by conidial morphology and ITS sequencing) was reisolated from pathogen-inoculated trees but not from control trees. These experiments were repeated with similar results at least three times, each consisting of 15 replications (greenhouse) and 12 replications (field) with additional Pestalotiopsis isolates. Many other Pestaliopsis spp. have been reported on other shade trees through the U.S. and the world. To our knowledge, this is the first report of P. mangiferae on an Ulmus species in the U.S. and the world. Since elm canker mainly affects the trunk, a featured characteristic of the Allee elm, it can potentially result in economic loss to the ornamental industry. References: (1) Y. Ko et al. Plant Dis. 91:1684, 2007. (2) T. J. White et al. Page 315 in: PCR Protocols: A Guide to Methods and Applications. Academic Press, San Diego, 1990.

TRAPPING ELM BARK BEETLES IN THE CITY OF WINNIPEG, WITH A NEW RECORD FOR SCOLYTUS MULTISTRIATUS, (COLEOPTERA: SCOLYTIDAE) IN MANITOBA

1981 ◽  
Vol 113 (3) ◽  
pp. 263-264 ◽  
Author(s):  
J. L. Buth ◽  
R. A. Ellis
Keyword(s):  
Bark Beetle ◽  
Bark Beetles ◽  
The United States ◽  
Dutch Elm Disease ◽  
Scolytus Multistriatus ◽  
South Central ◽  
Elm Bark Beetle ◽  
Primary Vector ◽  
Hylurgopinus Rufipes ◽  
The City

The first outbreak of Dutch elm disease in Manitoba was recorded in 1975 in Brandon, Selkirk, and Winnipeg (Hildahl 1977). The primary vector of the disease in Canada is the native elm bark beetle, Hylurgopinus rufipes (Eichh.). The smaller European elm bark beetle, Scolytus multistriatus (Marsh.), is considered the primary vector in most of the United States. In Canada, the latter species occurs throughout most of southern Ontario, parts of south-central Quebec, and has been recorded in New Bmnswick (Sterner et al. 1976).

TWIG FEEDING BY SCOLYTUS MULTISTRIATUS (COLEOPTERA: SCOLYTIDAE): WITHIN-TREE DISTRIBUTION AND USE FOR ASSESSMENT OF MASS TRAPPING

1984 ◽  
Vol 116 (7) ◽  
pp. 1025-1032 ◽  
Author(s):  
Robert J. Rabaglia ◽  
Gerald N. Lanier
Keyword(s):  
Sampling Method ◽  
Population Trends ◽  
Dutch Elm Disease ◽  
Scolytus Multistriatus ◽  
Mass Trapping ◽  
Sticky Traps ◽  
Feeding Sites ◽  
Tree Distribution ◽  
Disease Rates ◽  
Natural Pheromone

AbstractTwig-feeding injuries by S. multistriatus in juvenile white (or American) elms occurred primarily (61%) in the upper 1/3 of the crowns. Preferred feeding sites were crotches formed by the previous year's and current year's twig growth (both spring and summer) and by leaf petioles from current year's twig growth (summer only). An index of twig feeding appeared to reflect S. multistriatus population trends and was closely correlated with Dutch elm disease rates in Syracuse, N.Y., from 1978 to 1982. Twig-feeding indices and catches on sticky traps baited with S. multistriatus pheromone were generally correlated, but disparate when competing natural pheromone sources were abundant. Twig sampling indicated that S. multistriatus populations and disease rates were reduced by mass-trapping and trap-tree techniques. The twig-sampling method presented appears to be useful in predicting Dutch elm disease rates and assessing the effectiveness of measures to control its beetle vector.

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