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First report of emerging impatiens necrotic spot virus on lettuce in Greece


A ProMED-mail post

<https://url.emailprotection.link/?bczGkw5NaxKViInVN3o8WI7SkfPjCplYcnrvkSnR7vDdzBseB4Z4JgOzMtf4NyhKwZ-87t_ekCqY4X1TR9IACFg~~>

ProMED-mail is a program of the International Society for Infectious Diseases <https://url.emailprotection.link/?bJcYJd1UM9bbZyueyHGqCfuWBsCz6JLr6QpMnBNG04Pz2V8akThtcwE1bjLVZbAR2-PZoubzhx-ALOhYt6Kir6w~~>

Date: Wed 22 Jul 2020
Source: FreshPlaza [abridged, edited]
<https://url.emailprotection.link/?baPvztZtqP75prXEnPQG-JcIO0BLwYS6LMd7JfBzD8Vm2NN3qN2bE3yd4MDFzwg34mVqXv_v1vRd0GJwy2pFxaPfTXZqCXmgvHJm52w01py-c9uR-fZW09XixC4GY0uFwXD9FJUTeEnCf-BEib_-ghHCWFI9P5YKqj-dIuw2vmIs~>

Virus-like disease symptoms were observed in 4 fields of lettuce in 3 regions of central and south-eastern Greece. In all cases, the disease affected 30-40% of the plants. Symptoms consisted of brown ringspots, necrotic lesions, vein necrosis, and leaf distortion resembling those associated with tospovirus infections.

Samples [were tested] for the presence of _Tomato spotted wilt virus_ (TSWV), _Tomato chlorotic spot virus_ (TCSV), _Impatiens necrotic spot virus_ (INSV), _Groundnut ringspot virus_ (GRSV) and _Chrysanthemum stem necrosis virus_ (CSNV). RT-PCR assays and molecular sequencing confirmed that the causal agent was INSV.

This virus is an important pathogen for several crops including tomato and lettuce. The relatively high incidence of the virus in different regions suggests that INSV is an emerging [pathogen] for lettuce cultivation in Greece.

[Source publication: <https://url.emailprotection.link/?bkW555iCD3eXVaLbbhDk6lTzbr2c9zx_nW-4A6TIX9Uut3Ux647gInEBZNd7HRWICCqWvVavZcot-WnZy9si7owLHRs1xkYPZx5RAFKFcCsNgzFYyqtL4L62Om4G_aApe>]

--

Communicated by: Dr G Jackson Moderator, PestNet

<https://url.emailprotection.link/?bfVhs0ijoWQTHIIck1i8UNIk7eTpxesBoa40ITYDQCrqE1m51rKdbVnRIpeXjZ5RuVxqjQ2BZIvaulUJO7zdoWg~~>

[_Impatiens necrotic spot virus_ (INSV) was considered a strain of _Tomato spotted wilt virus_ (TSWV; type species of genus _Orthotospovirus_, previously _Tospovirus_) but has since been classified as a separate species in the genus. It has a wide host range and is of significant economic importance for many crop and ornamental hosts. The virus is distributed in Europe and North America and has also been identified in a few locations elsewhere. INSV is transmitted by the western flower thrips _Frankliniella occidentalis_, other thrips vectors have so far not been recorded. INSV has been included on the A2 quarantine list of the European Plant Protection Organisation (EPPO). The other viruses mentioned above are also all species of _Orthotospovirus_.

Tospoviruses are an extremely important group of plant viruses capable of infecting a large range of crops. They are transmitted exclusively by thrips species, which are found worldwide. Weed species can serve as pathogen or vector reservoirs and tospovirus epidemiology is complex. Disease management is difficult but may include vector control (for glasshouse crops), use of clean planting material, control of weed hosts of virus and vectors, phytosanitary measures, as well as use of resistant crop cultivars. Due to their agricultural importance, research on tospoviruses has increased dramatically in recent years. As a result, many new species are being found and many more can be expected to exist.

 

Maps

Greece:

<https://url.emailprotection.link/?bXfQPOe2Wgq3OmoXa1qWIG7ScutFWg1UApWqIN27kMzoGp1bNG2UYWpbZFnLkI613Suu5VvFSMwAbmNBc33Ixrz25UeI2-W9EfeYXLjAFhXuZKStvLJFE8UFDxNC6zRO7> and <https://url.emailprotection.link/?b05QFwqPTij9Or0JNntK2Ta028HK0Hy9cXDrxF4Qezb1NKFeCc6AI9TnUEmstxdHtJZyMZzrmUrrl_mu2GEMdyg~~>

Europe, overview:

<https://url.emailprotection.link/?bJpjrAQvbo_U19gfVXS2T6Yw1Lg-KmMA_jymow4eTwY7KOuAxQMRDRMkRWF25Rso5PcwVwXzDIn74mPoIvKA2o_gv75PyIqNu4qT5jw4ZGRotj3EcIBpibKjkSzKmjzky>

 

Pictures

INSV symptoms on lettuce varieties:

<https://url.emailprotection.link/?bndYamz_SXMLnSqab0dZotnZb2HlQOpX-TwZ3EtdjwYdgpmj3Q1W93gY12LHQWpLamqr-qtC5mBwKkDMd3SvTzQazWhPjqf4tWlW5f9GZJmbVsm-PiyiSAcDA04KyfB-uZ_LaaXl_ZcJECpr4VWvBDnfZ5e3HWzzuP9xI_X_5KgE~>,

<https://url.emailprotection.link/?b0EdxYAQix41RP4386ABfGmixVCiH1kEArQse_Tguq6IPdgypDVr8cMTcwYihPBo_FQP291U0aio3V8PyJu0OZJQBWePP7u0ovMMXqJTIq-hX5WEiRi35Y2igUcmnR0E_>

<https://url.emailprotection.link/?bvQgIZBHjsv3h0PSbH467XAoEKoj7tcQp12dM7ZWzZD6WI7XDjDcNVJtfbuyMsIA0PRwJ8rwadd0Q6iCE7sM_4fZXIrqG8maiAZTd4cdfNoqr-yl28haVoo5Q4rChGuUC>,

<https://url.emailprotection.link/?bqWJyvKfqBWnjnaX2vPrgLwx1fTEDYyrGfmi6knhGf-oYNq09W5fFiSjBG4RaRMQIft8g1f_k2P0aAnMocjkq-zyWZ9QhieFnCnWDjtXQ2YvTJcS9hMNcrA8Vplt0bJQ2>,

and

<https://url.emailprotection.link/?bqcYO1WuZlmYIeONAHltVia4Vnh7RpT8ytb_t-axMt2MNYpXj4SqqU9Hq3rhnOXohT7oMfjuSpg49OZe4GgvR1MvphwMzCSFIHVhykwiU1disiK7Ly7p40d2vdoHOmw0etNtVYkdOuBW4ww9Y7Sd2lWSBmki-4PnDSxTJKgJa-PA~>

Thrips:

<https://url.emailprotection.link/?bUp3EahdFhAGzm2eiDsQD6H_Kht_RoaC0RQKYCbZ84eHS3D3V2of8VRqalNtYrYwak0xXYBRjOOlsRg7ht3Q1zLkM8vE0GwhewsEMREM2t9Hp48y8PxCd95A4r5qR-XDY>

 

Links

Information on INSV:

<https://url.emailprotection.link/?bHLZnBwoj0kpr-xcxtA3yru5xCVReLw6imbmjUlBOEirvklZELv-C7ge_tBkg_yEN0ufCaja1MOYwrogA4eEfkQ~~>,

<https://url.emailprotection.link/?bHLZnBwoj0kpr-xcxtA3yrtsPViftz9-K7B-voK_-H48C7Oda6JE6eVUAx0Er4c5m-B_W2HcUA2S9L1VyOwm5S-NP8lBln7crbEVFoM9SgM2CUhb38Fck_BmDWzvqpNdA>,

<https://url.emailprotection.link/?bu2MckJfHVjmpI8Yq8o3kErF5AjEYv8Ckida2zWrc75-LhfJlHEfq-HuWXsGOXJ34o45BbBS0qrRCADHQSpTZMV6osPLksqY4AkpacWPlY7VH46LE2AvUrP7dWi-htRZgeF6RrkP3qnlVDS9dCbdbOmdh2VwsKB0Q6EzThGKCb2k~>,

<https://url.emailprotection.link/?bsmLFEWPflPEuw3SFm1M2O1pm5GhzaEdwPyYw7mBFlhdNVCauF4KCUyCf2uh8hJUS1pBRJR-ImTckEbp_irwXenWiR_5Nte780HUfrQ7XpoXl-8hsGt7LNI8Dq-atyyfg>,

<https://url.emailprotection.link/?bqtR5LIf4BXbYy_yTyBPDH9M6D-AHgdU33DlNo2xDDL8_GssZH5V8rbAbpFujddbVkVSsDYDF56b42cCWvkbVt0Hp9oCnEKQfU7h81fpdVvtR-49mjq4pfUs6smYcKfTw>, and <https://url.emailprotection.link/?bKsCCMSvPTiLjxRxB7-C5uHBvBApp_M2WXNI4xxL5U0XY0AeAgodI-uRoI1SCGOGe0DzLmlNn_5OYOyTYXY_EM1IjNcldn1NXHsZXUH_v7ifraxnjgqrxiivS8Rb95onb>

INSV in lettuce:

<https://url.emailprotection.link/?bul3VWE9kKklgx-C6-1TuX2OXCqJfmkggchnx1MUiDbeZYD7dvaIW5zySTI9YZPk_m-nCVLuzUDvkCyKe29_zG7W9QkCtUTREhIiQzA4w-2wK5UzGtQ2WAbhhIDzl8RdZNrhX0uFMQ9mipkxgqW4RktqpkuLTuIbCx4USU2s3ueU~>

and

<https://url.emailprotection.link/?bBccrOJ2ZJl49iAap47sc_D3VM0RG9W4tjHFa81pe1yA2FxjhW3497sbPwgRfvUSNL6OweLdZJcxkBuGpB24Ub7pabzyqoohPYFw8OLUtyVNJlX8FyNqr-nCdc3H71JLU>

Virus taxonomy via:

<https://url.emailprotection.link/?bhDeZrP8ViC6RnM08F5xq6d0Q_KG7bv5hv-8a_iYfG0CXZ0M8ZPO12ehdzp4e3vxIOOo5QKx_GRhCuivhy5TsmzTRt3DrisNPyzfRsYc5HYiYkejzV6lriYkGvOPsBO-6>

Information on thrips:

<https://url.emailprotection.link/?bJ-NceobwESIrv1xuI3kvOdvaTqk98QMBytP7N6vde4PtikneERZ9suE11sQUAlpAXZwTohgLFFBO5TR5z0-aAC6rnLWigOBYfTN8thc-8UMw8qZ9bA3OW-vPVnU_uybl>

EPPO A2 quarantine list:

<https://url.emailprotection.link/?bHpQ2IkoKuSgzueGpzt0tw4cPMEd6c19MqZhJg6tuCq19Zbsefpn-FCkrDFO-rS15jC91EGcg49o8DQtThvlC1O9ZidSav1Of26NoH4R0zUWqttjR3-eOIzmOBWaQYmqH>

- Mod.DHA]

 

[See Also:

Tomato spotted wilt virus, potato - Australia: epidemiology

https://url.emailprotection.link/?bq_zYE5UNCqYKnZfeyp68EYVWsTkoFBP_F66PH-ICxFHG2D1H8kWC9ViEY8UkcFnoaQ5kQ_nhLaG6nOeWx7TckXXmtENpDprG5mzvEGWb4HTBnJwgTZHLuXNcjzUGxgK0

2019

----

Impatiens necrotic spot virus, capsicum - USA: (MA) https://url.emailprotection.link/?boHuOx1wNq8VSRXKuSz8nVNrvoa3A4TvY4JNTrBFQKVhlK45OzocYOShYEjtkxZDZrf79KggFwTXWdb9q9T1b942DnyTuJizTF4qr37_QtK4eDhofIx0rima-f16bcvSt

2008

----

Tospoviruses, lettuce - USA: (CA)

https://url.emailprotection.link/?biPfhaT40-faOAf_2EADW-Hd7kSiWtMI8qX71m61iLJyA4btGKGsTBd0emYWkWfnJB1rteT0XJRsbO4sMGiU5bkBC9xrXA_yvUaN2uUwonB_uYCD1BGNtHHX0cGtrWwxk

2005

----

Impatiens necrotic spot, potato - USA (NY)

https://url.emailprotection.link/?blDmZG_Ykw6jwsZ0MdNtJ0-an0ybrlzpEu4atffCeH1kJdFvJV7DRIwt_MZrmBRdyuGYy6KxGLawRO5_8u1_kTEGjDFZlRlsOE34yPpr_a2H6SJZno6ZJU-ruBWhEeC76

2000

----

Impatiens necrotic spot tospovirus, peanuts - USA https://url.emailprotection.link/?bgls2lG8Pmqqj2wzYboGFSSmLAooRDdMdQJGQRJuBeTtx0F_PrDdLoEAbGBjdYZ649BwH00Nq3HbeQTnU8LDnY8FNWjgrox2G4HBrQgXq7jakwpzGLyT2pVRNyBdNKFqJ

1999

----

Impatiens necrotic spot tospovirus - Israel https://url.emailprotection.link/?bgls2lG8Pmqqj2wzYboGFScrPrEKtRE155xCP9nNu-LGNstLS8DPXCCkPrHhi0b2qVPYTNsx1nlwSAUxoRhn3iCGX_EpDgCBCdtU4ewoPGQ_ZLa7JnrUjPXyjb3b_xSlo

and additional items on tospoviruses in the archives]



More news from: ISID (International Society for Infectious Diseases)


Website: http://www.isid.org

Published: July 28, 2020

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