Pearse, G(eoffrey) E(astcott)

Radford, Dennis

doi:10.1093/gao/9781884446054.article.t065948

Cited by 2 publications

(4 citation statements)

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“…Stem dieback of pondberry was frequently reported before laurel wilt was observed in the United States (1,4,17,25) and has been attributed to drought, flooding, site disturbance, and various insects and potential pathogens (1.4.25). Pondspice thrives in wet soils (15) and is usually found at pond margins (22). but factors other than laurel wilt also probably contributed to some of the stem dieback and mortality of pondspice.…”

Section: Discussionmentioning

confidence: 99%

“…Most notably, sassafras (Sassafras albidum (Nuttall) Nees) and avocado (Pernea americana Mill.) Pondspice is a dioecious, deciduous, multibranched shrub that grows 0.5 to 3 m tall, and this species also grows at the margins of ponds and .swamps (18,22). and both species proved susceptible to R. lauricola in inoculation studies (3, 16).…”

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confidence: 99%

“…were reported as hosts in areas with diseased redbay. This species is known to occur in only 13 Georgia counties (20) and five counties in South Carolina (22). The disease bas been a .serious concern for the conservation of two other indigenous members of the Lauraceae, pondberry (Lindera melissifolia (Walter) Blume) and pondspice (Litsea aes-tivaWs (L.) Fern.…”

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confidence: 99%

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Susceptibility to Laurel Wilt and Disease Incidence in Two Rare Plant Species, Pondberry and Pondspice

Fraedrich

Harrington

Bates³

et al. 2011

Plant Disease

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Laurel wilt, caused by Raffaelea tauricola. has been responsible for extensive losses of redbay (Persea borbonia) in South Carolina and Georgia since 2003. Symptoms of the di.sease have been noted in other species of the Lauraceae such as the federally endangered pondberry (Lindera melissifolia) and the threatened pondspice (Litsea aeslivitlis). Pondberry and pondspice seedlings were inoculated with R. tatiricota from redbay. and both species proved highly susceptible to laurel wilt. Field assessments found substantial mortality of pondberry and pondspice, but in many cases the losses were not attributable to laurel wilt. R. lauricola was isolated from only 4 of 29 symptomatic pondberry plants at one site, but the fungus was not recovered from three plants at another site. R. lauricola was isolated from one of two symptomatic pondspice plants at one site, and from five of 11 plants at another site, but not from any plant at a third site. Insect bore holes, similar to those produced by Xyleborus glahratus (the vector of laurel wilt), were found in some pondberry and pondspice stems, but adults were not found. Damage caused by Xylosandrus cotnpaclus was found in pondberry stems, but this ambrosia beetle does not appear to be a vector of R. lauricola. Xyleboriniis .ut.xeseni adults were found in a dying pondspice with laurel wilt, and R. lauricola was recovered from two of three adults. Isolates of R. lauricola frotn pondberry. pondspice. and X. sa.xe.'ieni had rDNA sequences that were identical to previously characterized isolates, and inoculation tests confirmed that they were pathogenic to redbay. Because pondberry and pondspice tend to be shrubby plants with small stem diameters, these species may not be frequently attacked by X. glabratus unless in close proximity to larger diameter redbay.

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Section: Discussionmentioning

confidence: 99%

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Susceptibility to Laurel Wilt and Disease Incidence in Two Rare Plant Species, Pondberry and Pondspice

Fraedrich

Harrington

Bates³

et al. 2011

Plant Disease

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“…The family Caliciviridae consists of five genera, namely Norovirus , Sapovirus , Lagovirus , Vesivirus and Nebovirus [1]. Of these, noroviruses and sapoviruses are important etiological agents of viral gastroenteritis in humans.…”

Section: Introductionmentioning

confidence: 99%

Critical role of RIG-I and MDA5 in early and late stages of Tulane virus infection

Chhabra

Ranjan

Cromeans

et al. 2017

Journal of General Virology

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Human noroviruses are a major cause of acute gastroenteritis worldwide, but the lack of a robust cell culture system or small animal model have hampered a better understanding of innate immunity against these viruses. Tulane virus (TV) is the prototype virus of a tentative new genus, Recovirus, in the family Caliciviridae. Its epidemiology and biological properties most closely resemble human norovirus. The host innate immune response to RNA virus infection primarily involves pathogen-sensing toll-like receptors (TLRs) TLR3 and TLR7 and retinoic acid-inducible gene I-like receptor RIG-I and melanoma differentiation associated gene 5 (MDA5). In this study, by using siRNA knockdown, we report that TV infection in LLC-MK2 cells results in an early [3 h post infection (h p.i.), P<0.05] RIG-I-dependent and type I interferon-mediated antiviral response, whereas an MDA5-mediated antiviral effect was observed at later (12 h p.i.; P<0.05) stages of TV replication. Induction of RIG-I and MDA5 was critical for inhibition of TV replication. Furthermore, pre-activation of the RIG-I/MDA5 pathway prevented TV replication (>900-fold decrease; P<0.05), suggesting that RIG-I and MDA5 ligands could be used to develop novel preventive and therapeutic measures against norovirus.

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Pearse, G(eoffrey) E(astcott)

Cited by 2 publications

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Susceptibility to Laurel Wilt and Disease Incidence in Two Rare Plant Species, Pondberry and Pondspice

Susceptibility to Laurel Wilt and Disease Incidence in Two Rare Plant Species, Pondberry and Pondspice

Critical role of RIG-I and MDA5 in early and late stages of Tulane virus infection

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