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Identification of Leonurus sibiricus as a Weed Reservoir for Three Pepper-Infecting Viruses.

ABSTRACT: In plant virus ecology, weeds are regarded as wild reservoirs of viruses and as potential sources for insect-mediated transmission of viruses. During field surveys in 2013-2014, three Leonurus sibiricus plants showing virus-like symptoms were collected from pepper fields in Daegu, Seosan, and Danyang in Korea. Molecular diagnosis assays showed that the collected L. sibiricus samples were infected with either Tomato spotted wilt virus (TSWV), Pepper mild mottle virus (PMMoV), or Beet western yellow virus (BWYV), respectively. Since this is the first identification of TSWV, PMMoV, and BWYV from L. sibiricus, complete genome sequences of three virus isolates were determined to examine their phylogenetic relationships with the previously reported strains and isolates. Phylogenetic analyses performed using full genome sequences of the viruses showed the isolates of TSWV and PMMoV obtained from L. sibiricus are closely related to the pepper isolates of the corresponding viruses. Our results suggest that L. sibiricus could act an alternative host and reservoir of viruses that cause damages in pepper fields.

SUBMITTER: Kwon SJ

PROVIDER: S-EPMC4755677 | biostudies-literature | 2016 Feb

REPOSITORIES: biostudies-literature

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Identification of Leonurus sibiricus as a Weed Reservoir for Three Pepper-Infecting Viruses.

Kwon Sun-Jung SJ Choi Gug-Seoun GS Yoon Ju-Yeon JY Seo Jang-Kyun JK Choi Hong-Soo HS

The plant pathology journal 20160201 1

In plant virus ecology, weeds are regarded as wild reservoirs of viruses and as potential sources for insect-mediated transmission of viruses. During field surveys in 2013-2014, three Leonurus sibiricus plants showing virus-like symptoms were collected from pepper fields in Daegu, Seosan, and Danyang in Korea. Molecular diagnosis assays showed that the collected L. sibiricus samples were infected with either Tomato spotted wilt virus (TSWV), Pepper mild mottle virus (PMMoV), or Beet western yell ...[more]

PMID: 26889117

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Project description:Leonurus sibiricus L. (LS) is a medicinal plant used in East Asia, Europe and the USA. LS is primarily used in the treatment of gynecological diseases, and recent studies have demonstrated that it exerts anti‑inflammatory and antioxidant effects. To the best of our knowledge, the present study demonstrated for the first time that LS may promote osteoblast differentiation and suppress osteoclast differentiation in vitro, and that it inhibited lipopolysaccharide (LPS)‑induced bone loss in a mouse model. LS was observed to promote the osteoblast differentiation of MC3T3‑E1 cells and upregulate the expression of runt-related transcription factor 2 (RUNX2), a key gene involved in osteoblast differentiation. This resulted in the induction of the expression of various osteogenic genes, including alkaline phosphatase (ALP), osteonectin (OSN), osteopontin (OPN), type I collagen (COL1) and bone sialoprotein (BSP). LS was also observed to inhibit osteoclast differentiation and bone resorption. The expression levels of nuclear factor of activated T‑cells 1 (NFATc1) and c‑Fos were inhibited following LS treatment. NFATc1 and c‑Fos are key markers of osteoclast differentiation that inhibit receptor activator of nuclear factor‑κΒ ligand (RANKL)‑induced mitogen‑activated protein kinase (MAPKs) and nuclear factor (NF)‑κB. As a result, LS suppressed the expression of osteoclast‑associated genes, such as matrix metallopeptidase‑9 (MMP‑9), cathepsin K (Ctsk), tartrate‑resistant acid phosphatase (TRAP), osteoclast‑associated immunoglobulin‑like receptor (OSCAR), c‑src, c‑myc, osteoclast stimulatory transmembrane protein (OC‑STAMP) and ATPase H+ transporting V0 subunit d2 (ATP6v0d2). Consistent with the in vitro results, LS inhibited the reduction in bone mineral density and the bone volume/total volume ratio in a mouse model of LPS‑induced osteoporosis. These results suggest that LS may be a valuable agent for the treatment of osteoporosis and additional bone metabolic diseases.

Dataset Information

Identification of Leonurus sibiricus as a Weed Reservoir for Three Pepper-Infecting Viruses.

Publications

Identification of Leonurus sibiricus as a Weed Reservoir for Three Pepper-Infecting Viruses.

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