scholarly journals New Data on Host Range and Geographical Distribution of Dothistroma Needle Blight in Ukraine

2020 ◽  
Vol 3 (1) ◽  
pp. 89
Author(s):  
Kateryna Davydenko ◽  
Denis Baturkyn ◽  
Ihor Hnoievyi ◽  
Olena Shcherbak
Keyword(s):  
Host Range ◽  
Geographical Distribution ◽  
Dothistroma Needle Blight ◽  
Needle Blight

Serious pine needle disease, Dothistroma needle blight (DNB), caused by Dothistroma septosporum and D. pini was detected in Ukraine in the period 2004–2005. The aim of this study was to identify the Dothistroma species present on new hosts in Ukraine using different molecular techniques to increase our understanding of the local distribution of these pathogens. The occurrence and distribution of DNB were studied between the years 2014 and 2018, and 480 needle samples were collected from 16 different regions in 96 localities—the presence of DNB was confirmed in 62 of them. The host range of DNB consisted of eight pine species, including three subspecies and two spruce species, among them Pinus nigra subsp. pallasiana and P. sylvestris were the most frequent hosts. Results showed that both D. septosporum and D. pini were present on P. nigra subsp. pallasiana on the same trees and even in the same needles. Moreover, D. septosporum was found first in Ukraine on Pinus ponderosa Douglas, Pinus banksiana Lamb and Pinus contorta Douglas in the arboretum as well as Picea pungens Engelm and Picea abies (L.) H. Karst. The suitability for the disease in the different forest types and the intensity of the disease are discussed.

Forest health and climate change: A British Columbia perspective

2010 ◽  
Vol 86 (4) ◽  
pp. 412-422 ◽  
Author(s):  
Alex J. Woods ◽  
Don Heppner ◽  
Harry H. Kope ◽  
Jennifer Burleigh ◽  
Lorraine Maclauchlan
Keyword(s):  
Climate Change ◽  
British Columbia ◽  
Mountain Pine Beetle ◽  
Forest Health ◽  
Forest Insects ◽  
Pine Beetle ◽  
The World ◽  
Dothistroma Needle Blight ◽  
Management Recommendations ◽  
Needle Blight

BC’s forests have already faced two simultaneous, globally significant, epidemics linked to climate change; the Dothistroma needle blight epidemic in NW BC and the massive mountain pine beetle epidemic throughout the BC Interior. Building on these experiences, we have compiled our best estimates of how we believe other forest health agents may behave as climate change continues to influence our forests. We have drawn on literature from around the world but have focused on the situation in BC. We have made management recommendations based on what we have seen so far and what we expect to come.Key words: climate change, forest health, forest insects, forest pathogens, forest management, British Columbia

scholarly journals Worldwide Genetic Structure Elucidates the Eurasian Origin and Invasion Pathways of Dothistroma septosporum, Causal Agent of Dothistroma Needle Blight

2021 ◽  
Vol 7 (2) ◽  
pp. 111
Author(s):  
Martin S. Mullett ◽  
Rein Drenkhan ◽  
Kalev Adamson ◽  
Piotr Boroń ◽  
Anna Lenart-Boroń ◽  
...  
Keyword(s):  
Eastern Europe ◽  
Causal Agent ◽  
Ancestral Population ◽  
Economic Damage ◽  
Invasion Pathways ◽  
Western Asia ◽  
Dothistroma Needle Blight ◽  
Migration Pathways ◽  
Dothistroma Septosporum ◽  
Needle Blight

Dothistroma septosporum, the primary causal agent of Dothistroma needle blight, is one of the most significant foliar pathogens of pine worldwide. Its wide host and environmental ranges have led to its global success as a pathogen and severe economic damage to pine forests in many regions. This comprehensive global population study elucidated the historical migration pathways of the pathogen to reveal the Eurasian origin of the fungus. When over 3800 isolates were examined, three major population clusters were revealed: North America, Western Europe, and Eastern Europe, with distinct subclusters in the highly diverse Eastern European cluster. Modeling of historical scenarios using approximate Bayesian computation revealed the North American cluster was derived from an ancestral population in Eurasia. The Northeastern European subcluster was shown to be ancestral to all other European clusters and subclusters. The Turkish subcluster diverged first, followed by the Central European subcluster, then the Western European cluster, which has subsequently spread to much of the Southern Hemisphere. All clusters and subclusters contained both mating-types of the fungus, indicating the potential for sexual reproduction, although asexual reproduction remained the primary mode of reproduction. The study strongly suggests the native range of D. septosporum to be in Eastern Europe (i.e., the Baltic and Western Russia) and Western Asia.

Breeding against dothistroma needle blight of radiata pine in Australia

2010 ◽  
Vol 40 (8) ◽  
pp. 1653-1660 ◽  
Author(s):  
Miloš Ivković ◽  
Brian Baltunis ◽  
Washington Gapare ◽  
Jo Sasse ◽  
Gregory Dutkowski ◽  
...  
Keyword(s):  
Significant Proportion ◽  
Radiata Pine ◽  
Age And Growth ◽  
Phenotypic Correlation ◽  
Residual Variance ◽  
Narrow Sense Heritability ◽  
Economic Analyses ◽  
Dothistroma Needle Blight ◽  
Pinus Spp ◽  
Needle Blight

Pine needle blight, caused by Dothistroma septosporum (Dorog.) M. Morelet, is one of the most serious foliar diseases of Pinus spp. in Australia and New Zealand. In 16 Pinus radiata (D.Don.) progeny trials in northeastern Victoria, Australia, Dothistroma-caused defoliation varied widely among trials and assessment years, ranging from 5% to 65%. The estimated narrow sense heritability ranged from nonsignificant to as high as 0.69 with a median of 0.36. Spatial autocorrelation of residuals accounted for a significant proportion of residual variance, and that increased heritability estimates. Genetic correlation between defoliation scores at an early age and growth at a later age was negative with a median value of –0.39. Phenotypic correlation between defoliation and survival was low and negative with a median value of –0.11. Economic analyses indicated that at sites with a high risk of infection, the effect of reducing defoliation on profitability was comparable with that of increasing growth at sites free from infection. The genetic parameters and economic impacts of Dothistroma were used to derive selection indices and include resistance to defoliation into the current breeding objective for radiata pine.

Eurotium rubrum. [Descriptions of Fungi and Bacteria].

1995 ◽  
Author(s):  
Z. Kozakiewicz
Keyword(s):  
Host Range ◽  
Geographical Distribution ◽  
World Wide ◽  
Human Nails

Abstract A description is provided for Eurotium rubrum. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. HOSTS: A xerotolerant species with the same host range as E. repens (IMI Sheet 1255). DISEASES: Not known to be a pathogen of animals or man, but the species has been isolated from human nails (Smith, 1989). GEOGRAPHICAL DISTRIBUTION: World-wide.

Chaetomium sphaerale. [Descriptions of Fungi and Bacteria].

2006 ◽  
Author(s):  
D. W. Minter
Keyword(s):  
Puerto Rico ◽  
Host Range ◽  
Geographical Distribution

Abstract C. sphaerale is described and illustrated. Information on host range (Manilkara bidentata, insects and artefacts), geographical distribution (Japan; Ontario, Canada; Massachusetts, USA; and Puerto Rico), and transmission is provided.

Chaetomium strumarium. [Descriptions of Fungi and Bacteria].

2006 ◽  
Author(s):  
D. W. Minter
Keyword(s):  
South Africa ◽  
Saudi Arabia ◽  
Great Britain ◽  
The Netherlands ◽  
Host Range ◽  
Geographical Distribution ◽  
Canary Islands ◽  
Democratic Republic ◽  
Democratic Republic Of Congo ◽  
Horticultural Crops

Abstract C. strumarium is described and illustrated. Information on diseases caused by C. strumarium, host range (field and horticultural crops, trees, dung, man and artefacts), geographical distribution (Algeria, Canary Islands, Democratic Republic of Congo, Egypt, Gambia, Kenya, Namibia, Nigeria, South Africa, Tanzania, USA, India, Nepal, Pakistan, Thailand, Western Australia, Germany, Great Britain, the Netherlands, Cyprus, Israel, Kuwait and Saudi Arabia), and transmission is provided.

Puccinia liliacearum. [Descriptions of Fungi and Bacteria].

2011 ◽  
Author(s):  
P. F. Cannon
Keyword(s):  
New York ◽  
Czech Republic ◽  
Host Range ◽  
Geographical Distribution ◽  
Balearic Islands

Abstract A description is provided for P. liliacearum. Information on the transmission of the disease caused by the pathogen is included, along with details on geographical distribution (Alberta, Canada; New York and Pennsylvania, USA; Iran; Iraq; Austria; Belgium; Bulgaria; Czech Republic; Denmark; Finland; France; Germany; Hungary; Italy; Norway; Poland; Romania; mainland and Balearic Islands, Spain; Sweden; Switzerland; Ukraine; and England and Scotland, UK) and host range (Ornithogalum species, including O. amphibolum, O. collinum, O. fimbriatum, O. gussonei, O. montanum, O. narbonense, O. nutans, O. orthophyllum subsp. kochii, O. ponticum, O. pyramidale, O. pyrenaicum, O. refractum, O. sigmoideum and O. umbellatum).

Rhizosphaera pini. [Descriptions of Fungi and Bacteria].

1980 ◽  
Author(s):  
S. Diamandis
Keyword(s):  
Great Britain ◽  
North America ◽  
Picea Abies ◽  
Geographical Distribution ◽  
Abies Balsamea ◽  
Tsuga Diversifolia ◽  
Needle Blight

Abstract A description is provided for Rhizosphaera pini. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. HOSTS: Abies balsamea, A. cephallonica, A. fraseri, A. grandis, A. pectinata, A. veitchii, Pinus sp., Tsuga diversifolia, also possibly Picea abies. DISEASE: Needle blight of firs. GEOGRAPHICAL DISTRIBUTION: Asia (Japan), Europe (Austria, Czechoslovakia, France, Germany, Great Britain, Greece, Italy), North America (Canada, USA). TRANSMISSION: Not known.

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