[MAIPC] Reminder. If you see something, say something

Tue Jun 29 05:57:38 PDT 2021

Matt Tancos  and his team are doing a great job looking for pathogen
biocontrols. Who is looking for insect biocontrols in a similar way?

From: Tancos, Matthew - ARS <matthew.tancos at usda.gov
<mailto:matthew.tancos at usda.gov> > 
Sent: Friday, June 11, 2021 8:18 AM
To: ialm at erols.com <mailto:ialm at erols.com> 
Subject: Re: [External Email]biological control of wineberry

Hi Marc,

No, we were not planning on pursuing this further after Bill's initial work.
However, I will speak with Bill and see if this pathogen has had any impact
on this specific infestation over the years. Also,

I was able to identify a putative pathogen of fig buttercup this year. We
are currently investigating the microorganisms and trying to get healthy fig
buttercup for inoculations to verify pathogenicity. Hopefully, we find
something interesting!

best,

Matt 

Matthew A. Tancos, PhD.

Research Plant Pathologist

USDA Agricultural Research Service

Foreign Disease-Weed Science Research Unit

1301 Ditto Avenue

Fort Detrick, MD 21702

Tel: 301-619-7386

  _____  

From: Marc Imlay <ialm at erols.com <mailto:ialm at erols.com> >
Sent: Thursday, June 10, 2021 4:38 PM
To: Tancos, Matthew - ARS <matthew.tancos at usda.gov
<mailto:matthew.tancos at usda.gov> >
Subject: [External Email]biological control of wineberry 

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So does anyone plan to go to Frederick MD to see if the new biocontrol of
wineberry is still there?

Marc

Bruckart, W.L., Eskandari, F. 2015. First Report of a Leaf Spot caused by
Sphaerulina tirolensis on Rubus phoenicolasius. Plant Disease. Volume 99,
Number 9, Page 1275.

Technical Abstract: Diseased leaves of Rubus phoenicolasius (wineberry) were
discovered on October 11, 2013 in a small, 3x3 m, infestation at a sunny
location along Indian Springs Rd., Frederick, MD (N 39.467634, W 77.461362).
Although the proportion of diseased plants was estimated to be less than10
per cent of the population, several leaves had numerous, angular, discrete
necrotic spots, as large as 1 mm diam., characterized by white or light
gray, necrotic centers containing pycnidia and distinct, thin, dark red
margins. Isolation from surface-sterilized leaf tissue on acidified potato
dextrose agar resulted in recovery of a Septoria-like fungus (FDWSRU
13-028). Koch's postulates were satisfied after two separate inoculations of
five healthy cut canes each of R. phoenicolasius from greenhouse-propagated
plants; the same fungus was reisolated after each inoculation. The isolate
was characterized by narrow, tubular, long, hyaline, and straight, curved or
flexuous conidia having 4-6(-8) septations and measuring (mean [c.i.], P =
0.05; w x l) 2.25 [0.12] x 54.5 [ 4.6] microns. DNA was extracted from the
isolate using DNEasy and sequenced for ITS1, 5.8S, and ITS2 (GenBank No.
KM408152). Using the BLAST option in GenBank, two accessions from raspberry,
Rubus idaeus (GenBank Nos. KF251638 and KF251637), listed as "living
cultures ex-type CBS 109017, 109018" by Verkley et al (2013), were 99 per
cent similar, having only one nucleotide difference from the FDWSRU 13-028
sequence. The pathogen is tentatively identified as Sphaerulina cf.
tirolensis Verkley, Quaedvlieg & Crous, on the basis of similar conidium
morphological (Ellis et al. 1991, Verkley et al. 2013) and molecular
characteristics (Verkley et al. 2013). Specimens have been submitted to the
USDA, ARS, SMML and to the CBS Fungal Biodiversity Centre in Utrecht, The
Netherlands. Wineberry is a raspberry that was introduced from Asia and is
now an invasive species in the eastern USA. This is the first report of S.
tirolensis, a raspberry pathogen, on R. phoenicolasius. Characterization of
diseases at new locations for plant introductions is fundamental to
understanding ecological events and interactions where the host is
introduced. This disease is likely established in the USA, because
symptomatic plants were found at a new site near the original patch on
August 15, 2014, and observations of significant increase in incidence have
been made in September, 2014. At the present level of disease and the fact
that symptoms appear after fruiting, it seems unlikely that this leaf spot
is affecting population density to any significant level.

https://www.ars.usda.gov/research/publications/publication/?seqNo115=310070
<https://gcc02.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww.ars.u
sda.gov%2Fresearch%2Fpublications%2Fpublication%2F%3FseqNo115%3D310070&data=
04%7C01%7C%7Ce041758f616d4c9d340308d92c4fab95%7Ced5b36e701ee4ebc867ee03cfa0d
4697%7C0%7C0%7C637589542958586630%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMD
AiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C1000&sdata=gRcgoNf1AQi6WZ
esJWQiZi6ZMXNG1Xjpozlffx8YOAc%3D&reserved=0> 

Author

<https://gcc02.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww.ars.u
sda.gov%2Fpeople-locations%2Fperson%3Fperson-id%3D698&data=04%7C01%7C%7Ce041
758f616d4c9d340308d92c4fab95%7Ced5b36e701ee4ebc867ee03cfa0d4697%7C0%7C0%7C63
7589542958586630%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzI
iLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C1000&sdata=dn90OrG0VHJE%2FGFDgQo6qo87gO%2F
W52E4lj4DoE7gcoA%3D&reserved=0> Bruckart, William - Bill

Biological control: Numerous diseases and insects affect wineberry,
including wineberry latent virus. See Ellis and others [
<https://gcc02.safelinks.protection.outlook.com/?url=http%3A%2F%2Fwww.fs.fed
.us%2Fdatabase%2Ffeis%2Fplants%2Fshrub%2Frubpho%2Fall.html%2317&data=04%7C01
%7C%7Ce041758f616d4c9d340308d92c4fab95%7Ced5b36e701ee4ebc867ee03cfa0d4697%7C
0%7C0%7C637589542958596707%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQI
joiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C1000&sdata=AaS6dpr4MKIDmFmmXrzOJ
LErGQ%2BH4KeAqLih8K0ZG6w%3D&reserved=0> 17] for a review.

https://www.inaturalist.org/guide_taxa/354717
<https://gcc02.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww.inatu
ralist.org%2Fguide_taxa%2F354717&data=04%7C01%7C%7Ce041758f616d4c9d340308d92
c4fab95%7Ced5b36e701ee4ebc867ee03cfa0d4697%7C0%7C0%7C637589542958596707%7CUn
known%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJX
VCI6Mn0%3D%7C1000&sdata=I91NRoKlD7YxmDvZt9aa3DWg7bj1P40BkcEAdHNTlSs%3D&reser
ved=0> 

17. Ellis, Michael A.; Converse, Richard H.; Williams, Roger N.; Williamson,
Brian. 1997. Compendium of raspberry and blackberry diseases and insects.
St. Paul, MN: The American Phytopathological Society. 100 p. [73168]

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