Inheritance of Resistance to a Third Pathotype of Pea Seed-Borne Mosaic Virus in Pisum sativum

Provvidenti, R.; Alconero, R.

doi:10.1093/oxfordjournals.jhered.a110457

Cited by 32 publications

(10 citation statements)

References 3 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Only the resistance genes sbm-1 and sbm-2 are incorporated in the proposed model, but as previously explained, two more genes, sbm-3 and sbm-4, have been proposed to explain recessive resistance against PSbMV in P. sativum (26,27). Further research on the interactions between P. sativum genotypes and PSbMV pathotypes is needed in order to fully elucidate all viral and host determinants involved in the known virus-host pattern of recessive resistance.…”

Section: Discussionmentioning

confidence: 99%

“…The P. sativum lines that have been used to differentiate the PSbMV pathotypes are of four categories: (A) susceptible to P-1, P-2, and P-4 (all-susceptible); (B) resistant to P-1, P-2, and P-4 (multiresistant); (C) resistant to P-2; and (D) resistant to P-1 and P-2 (25). Resistances to all three pathotypes of PSbMV in P. sativum are inherited as single recessive genes, designated sbm-1, sbm-2, sbm-3, and sbm-4 (26,27). The sbm genes were mapped to linkage groups II (sbm-2) and VI (sbm-1, sbm-3, and sbm-4) as part of two clusters of recessive resistance genes affecting several potyviruses (29,38).…”

mentioning

confidence: 99%

“…Gene sbm-1 was mapped in multiresistant category B line PI 193586 (11) and later was shown to cosegregate with sbm-3 and sbm-4 (29). Resistance genes sbm-3 and sbm-4 were both defined in category B line PI 347492 as conferring resistance to P-2 and P-4, respectively (26,27). A P. sativum category D line, PI 269818, which is resistant to pathotype P-1 and P-2 but susceptible to pathotype P-4 (1), was used to map the P-1/P-4 differentiating host-specific pathogenicity determinant to the VPg cistron (15).…”

mentioning

confidence: 99%

See 2 more Smart Citations

Recessive Resistance in Pisum sativum and Potyvirus Pathotype Resolved in a Gene-for-Cistron Correspondence between Host and Virus

Johansen¹,

Lund²,

Hjulsager³

et al. 2001

J Virol

104

View full text Add to dashboard Cite

Pea seed-borne mosaic potyvirus (PSbMV) isolates are divided into pathotypes P-1, P-2, and P-4 according to their infection profile on a panel of Pisum sativum lines. P. sativum PI 269818 is resistant to P-1 and P-2 isolates and is susceptible to P-4 isolates. Resistance to P-1 is inherited as a single recessive gene, denoted sbm-1, and the pathogenicity determinant has previously been mapped to the virus-coded protein VPg. In the cultivar Bonneville, a second recessive gene, sbm-2, confers specific resistance to P-2. By exchanging cistrons between a P-2 and a P-4 isolate, the P3-6k1 cistron was identified as the PSbMV host-specific pathogenicity determinant on Bonneville. Exchange of P3-6k1 did not affect infection on PI 269818, and infection of Bonneville was not altered by substitution of the VPg cistron, indicating that P3-6k1 and VPg are independent determinants of pathotype-specific infectivity. On PI 269818 the pathogenicity determinant of both P-1 and P-2 mapped to the N terminus of VPg. This suggests that VPg from the P-1 and P-2 isolates are functionally similar on this host and that resistance to P-1 and P-2 in PI 269818 may operate by the same mechanism. Identification of VPg-sbm-1 and P3-6k1-sbm-2 as independent pairs of genetic interactors between PSbMV and P. sativum provides a simple explanation of the three known pathotypes of PSbMV. Furthermore, analysis of ␤-glucuronidase-tagged P-2 virus indicated that sbm-2 resistance affected an early step in infection, implying that the P3-6k1 region plays a critical role in potyvirus replication or cell-to-cell movement.

show abstract

Section: Discussionmentioning

confidence: 99%

mentioning

confidence: 99%

mentioning

confidence: 99%

See 1 more Smart Citation

Recessive Resistance in Pisum sativum and Potyvirus Pathotype Resolved in a Gene-for-Cistron Correspondence between Host and Virus

Johansen¹,

Lund²,

Hjulsager³

et al. 2001

J Virol

104

View full text Add to dashboard Cite

show abstract

“…On LG VI, five distinct but very tightly linked loci have been identified that overlap with the specificities observed for the cluster on LG II. In this cluster, the loci cyv2, sbm1, sbm3, sbm4, and wlv confer resistance to ClYVV, PSbMV-P1, PSbMV-L1 or -P2, PSbMV-P4, and White lupin mosaic virus, respectively (172)(173)(174)(175).…”

Section: Genetics Of Virus Resistance In Naturementioning

confidence: 99%

Genetics of Plant Virus Resistance

Kang

Yeam

Jahn

2005

Annu. Rev. Phytopathol.

417

307

View full text Add to dashboard Cite

Genetic resistance to plant viruses has been used for at least 80 years to control agricultural losses to viral diseases. To date, hundreds of naturally occurring genes for resistance to plant viruses have been reported from studies of both monocot and dicot crops, their wild relatives, and the plant model, Arabidopsis. The isolation and characterization of a few of these genes in the past decade have resulted in detailed knowledge of some of the molecules that are critical in determining the outcome of plant viral infection. In this chapter, we have catalogued genes for resistance to plant viruses and have summarized current knowledge regarding their identity and inheritance. Insofar as information is available, the genetic context, genomic organization, mechanisms of resistance and agricultural deployment of plant virus resistance genes are also discussed.

show abstract

“…Resistance, characterized as immunity, is controlled by a single recessive gene sbm. The sbm-1 gene confers resistance to P-1 and P-2 isolates, and sbm-2 and sbm-3 to P-2 isolates, while only sbm-4 to P-4 isolates of PSbMV ( Johansen, Keller, Dougherty, & Hampton, 1996;Provvidenti & Alconero, 1988). The sbm-1 gene is linked to wlo on chromosome 6 of the Pisum genome while sbm-2 is linked to mo on chromosome 2.…”

Section: Mosaic Caused By Psbmv and Bymvmentioning

confidence: 99%