emerald ash borer
Recently Published Documents


TOTAL DOCUMENTS

558
(FIVE YEARS 151)

H-INDEX

45
(FIVE YEARS 5)

Insects ◽  
2022 ◽  
Vol 13 (1) ◽  
pp. 52
Author(s):  
Marina J. Orlova-Bienkowskaja ◽  
Andrzej O. Bieńkowski

Emerald ash borer Agrilus planipennis (Coleoptera: Buprestidae) is one of 20 priority quarantine pests of the European Union. It is native to Asia and is established in the USA, Canada, European Russia, and Ukraine. We made the first prognosis of the potential range of A. planipennis in Europe based on heat availability. Mean annual growing degree days base 10 °C (AGDD10) was calculated for each grid square (0.25° × 0.25° latitude x longitude degrees) on the Earth’s surface. Minimal AGDD10 recorded in the grid squares currently occupied by A. planipennis was 714° in Asia, 705° in North America, and 711° in European Russia. Agrilus planipennis has never been recorded in localities with AGDD10 below 700°. If the phenotypic plasticity would not allow this species to overcome this threshold, cold regions of Europe would probably not be invaded by A. planipennis. Thus, Fraxinus excelsior could potentially escape from A. planipennis in some regions of Norway, Sweden, Finland, Ireland, and Great Britain.


2021 ◽  
Author(s):  
Jonathan R. Holt ◽  
Jennifer R. Smetzer ◽  
Mark E. Borsuk ◽  
Danelle Laflower ◽  
David A. Orwig ◽  
...  

Author(s):  
Jian J. Duan ◽  
Roy G. Van Driesche ◽  
Jonathan Schmude ◽  
Ryan Crandall ◽  
Claire Rutlege ◽  
...  

Forests ◽  
2021 ◽  
Vol 12 (11) ◽  
pp. 1509
Author(s):  
Nickolas N. Rajtar ◽  
Benjamin W. Held ◽  
Robert A. Blanchette

The emerald ash borer (EAB, Agrilus planipennis) is a devastating invasive pest that has killed millions of ash trees in the United States and Canada. EAB was discovered in the US in 2002 and first reported in Minnesota in 2009. It attacks ash trees that are native to the United States, including Fraxinus americana (white ash), F. nigra (black ash) and F. pennsylvanica (green ash). It also attacks Chionanthus virginicus (white fringe tree). Seven species of fungi isolated and identified only from EAB-infested trees in a previous study as having the potential to cause cankers were used to test their pathogenicity in F. americana (white ash). The fungi used were Cytospora pruinosa, Diplodia mutila, Diplodia seriata, Paraconiothyrium brasiliense, Phaeoacremonium minimum, Phaeoacremonium scolyti, and Thyronectria aurigera. Two field experiments that used F. americana used two inoculation methods: woodchip and agar plug inoculations. Results indicated that all of the fungi tested caused cankers in varying amounts, as compared to the controls. The largest cankers were caused by D. mutila (270 mm2), C. pruinosa (169 mm2), and D. seriata (69 mm2). All fungi except for T. aurigera were re-isolated and sequenced to confirm Kochs’ postulates. Canker-causing fungi found in association with EAB galleries have the potential to contribute to tree dieback and mortality.


Forests ◽  
2021 ◽  
Vol 12 (10) ◽  
pp. 1373
Author(s):  
Liangjian Qu ◽  
Jifu Li ◽  
Ruizhen Wang ◽  
Xiaoyi Wang ◽  
Tonghai Zhao ◽  
...  

The emerald ash borer (EAB, Agrilus planipennis), an ash-tree wood-boring beetle, has caused widespread mortality of ash. Asian ash, which coevolved with EAB, is considered more resistant than its North American and European congeners. Although some compounds and proteins related to resistance to EAB have been identified, the underlying ash resistance mechanism to EAB still needs further study. The Asian ash species, Fraxinus chinensis var. rhynchophylla, is highly resistant to EAB. In this study, metabolic and transcriptional profiling of the phloem of this species was investigated, and differentially expressed metabolites and genes were analyzed by comparing them with those of the susceptible F. pennsylvanica. Four hundred and twenty-eight metabolites were detected in both species, and several coumarins and lignans, which were exclusive to F. chinensis var. rhynchophylla, were identified. Compared with susceptible F. pennsylvanica, genes related to phenylpropanoid biosynthesis, ethylene (ET), and jasmonic acid (JA) biosynthesis and signaling in F. chinensis var. rhynchophylla were found to be up-regulated. It was hypothesized that coumarins, lignans, and ET and JA signaling might contribute to greater resistance to EAB in F. chinensis var. rhynchophylla. This study suggests candidate metabolites and genes for biomarker development in future ash-breeding programs.


2021 ◽  
Vol 188 ◽  
pp. 107126
Author(s):  
Emily S. Hope ◽  
Daniel W. McKenney ◽  
John H. Pedlar ◽  
Kevin Lawrence ◽  
Heather MacDonald

2021 ◽  
Vol 104 (3) ◽  
Author(s):  
Christine A. Nalepa ◽  
Kelly L. F. Oten ◽  
Matthew A. Bertone

Sign in / Sign up

Export Citation Format

Share Document