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Review
. 2016 Nov 30:7:1906.
doi: 10.3389/fmicb.2016.01906. eCollection 2016.

The Current Status of the Soybean- Soybean Mosaic Virus (SMV) Pathosystem

Jian-Zhong Liu  1 , Yuan Fang  1 , Hongxi Pang  2
Affiliations
Review

The Current Status of the Soybean- Soybean Mosaic Virus (SMV) Pathosystem

Jian-Zhong Liu et al. Front Microbiol. .

Abstract

Soybean mosaic virus (SMV) is one of the most devastating pathogens that cost huge economic losses in soybean production worldwide. Due to the duplicated genome, clustered and highly homologous nature of R genes, as well as recalcitrant to transformation, soybean disease resistance studies is largely lagging compared with other diploid crops. In this review, we focus on the major advances that have been made in identifying both the virulence/avirulence factors of SMV and mapping of SMV resistant genes in soybean. In addition, we review the progress in dissecting the SMV resistant signaling pathways in soybean, with a special focus on the studies using virus-induced gene silencing. The soybean genome has been fully sequenced, and the increasingly saturated SNP markers have been identified. With these resources available together with the newly developed genome editing tools, and more efficient soybean transformation system, cloning SMV resistant genes, and ultimately generating cultivars with a broader spectrum resistance to SMV are becoming more realistic than ever.

Keywords: SNP; disease resistance; mapping; soybean; soybean mosaic virus; virus-induced gene silencing.

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Figures

FIGURE 1
FIGURE 1
The genome organization of Soybean mosaic virus. The diagram was drawn based on the nucleotide sequence of SMV N strain (Eggenberger et al., 1989). The colored boxes represent 11 proteins encoded by SMV genome. The black lines at the 5′ and 3′ ends represent 5′ and 3′ untranslated region (UTR). The horizontal arrow and the star indicate the start and stop codons of the SMV polypeptide, respectively. The numbers above the vertical lines indicate the start positions of the SMV proteins. The sizes of the SMV proteins (the numbers of amino acids) are indicated by the blue numbers below the protein names. The PIPO embedded in the P3 is shown by the overlapping dark blue box with the start and stop positions labeled, respectively. The diagram is not drawn in scale.
See this image and copyright information in PMC

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