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      A pair of native fungal pathogens drives decline of a new invasive herbivore

      brief-report

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          Abstract

          Two North American fungal pathogens caused a coepizootic leading to localized collapse of an outbreak population of the newly invasive planthopper pest, the spotted lanternfly ( Lycorma delicatula), in the eastern United States. The pathogens partitioned the habitat, with the majority of L. delicatula on tree trunks killed by Batkoa major, while cadavers of L. delicatula killed by Beauveria bassiana were usually on the ground. The future will show whether these pathogens will be drivers in boom–bust cycles or will result in recurrent low population densities of this new invasive species.

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          Most cited references20

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          Exotic plant invasions and the enemy release hypothesis

          R W Keane (2002)
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            Phylogeny and systematics of the anamorphic, entomopathogenic genus Beauveria.

            Beauveria is a cosmopolitan anamorphic genus of arthropod pathogens that includes the agronomically important species, B. bassiana and B. brongniartii, which are used as mycoinsecticides for the biological control of pest insects. Recent phylogenetic evidence demonstrates that Beauveria is monophyletic within the Cordycipitaceae (Hypocreales), and both B. bassiana and B. brongniartii have been linked developmentally and phylogenetically to Cordyceps species. Despite recent interest in the genetic diversity and molecular ecology of Beauveria, particularly as it relates to their role as pathogens of insects in natural and agricultural environments, the genus has not received critical taxonomic review for several decades. A multilocus phylogeny of Beauveria based on partial sequences of RPB1, RPB2, TEF and the nuclear intergenic region, Bloc, is presented and used to assess diversity within the genus and to evaluate species concepts and their taxonomic status. B. bassiana and B. brongniartii, both which represent species complexes and which heretofore have lacked type specimens, are redescribed and types are proposed. In addition six new species are described including B. varroae and B. kipukae, which form a biphyletic, morphologically cryptic sister lineage to B. bassiana, B. pseudobassiana, which also is morphologically similar to but phylogenetically distant from B. bassiana, B. asiatica and B. australis, which are sister lineages to B. brongniartii, and B. sungii, an Asian species that is linked to an undetermined species of Cordyceps. The combination B. amorpha is validly published and an epitype is designated.
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              Pathogen accumulation and long-term dynamics of plant invasions

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                Author and article information

                Journal
                Proc Natl Acad Sci U S A
                Proc. Natl. Acad. Sci. U.S.A
                pnas
                pnas
                PNAS
                Proceedings of the National Academy of Sciences of the United States of America
                National Academy of Sciences
                0027-8424
                1091-6490
                7 May 2019
                22 April 2019
                22 April 2019
                : 116
                : 19
                : 9178-9180
                Affiliations
                [1] aDepartment of Entomology, Cornell University , Ithaca, NY 14853-2601;
                [2] bEmerging Pests and Pathogens Research, Agricultural Research Service, US Department of Agriculture , Ithaca, NY 14853-2901;
                [3] cMolecular and Breeding Laboratory, L. F. Lambert Spawn Co. , Coatesville, PA 19320
                Author notes
                1To whom correspondence should be addressed. Email: ehc87@ 123456cornell.edu .

                Edited by David L. Denlinger, The Ohio State University, Columbus, OH, and approved April 5, 2019 (received for review February 28, 2019)

                Author contributions: E.H.C. and A.E.H. designed research; E.H.C., L.A.C., A.G., and A.E.H. performed research; E.H.C., L.A.C., A.G., and A.E.H. analyzed data; E.H.C. and A.E.H. wrote the paper.

                Author information
                http://orcid.org/0000-0003-4978-2157
                Article
                201903579
                10.1073/pnas.1903579116
                6511058
                31010927
                684df0d0-0638-4b79-820b-8adca36a573e
                Copyright © 2019 the Author(s). Published by PNAS.

                This open access article is distributed under Creative Commons Attribution-NonCommercial-NoDerivatives License 4.0 (CC BY-NC-ND).

                History
                Page count
                Pages: 3
                Funding
                Funded by: USDA | Animal and Plant Health Inspection Service (APHIS) 100009168
                Award ID: AP18PPQS&T00C080
                Award Recipient : Ann E Hajek
                Funded by: USDA | U.S. Forest Service (USFS) 100006959
                Award ID: 18-CA-11420004-058
                Award Recipient : Ann E Hajek
                Categories
                Biological Sciences
                Applied Biological Sciences
                From the Cover
                Brief Report

                coepizootic,pathogen accumulation,invasive species,entomopathogenic fungi,spotted lanternfly

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