Occurrence of dwarf virus of winter wheat and barley in several regions of Slovakiaduring the growing seasons 2001-2004

Bukvayová, N.; Henselová, Mária; Vajcíková, V.; Kormanová, T.

doi:10.17221/3457-pse

Cited by 20 publications

(15 citation statements)

References 12 publications

(8 reference statements)

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“…The reduced photosynthesis capacity caused by reduced content of photosynthetic pigments contributes to the decrease in biomass production, which is shown in our studies as well as previous reports on BYDV infected cereals (Bukvayová et al, 2006). Resistant cultivars infected with BYDV showed little effect on plant biomass, indicated resistant genotypes were able to maintain plant growth upon virus infection.…”

Section: Discussionsupporting

confidence: 88%

Peer Review #4 of "Agronomical, biochemical and histological response of resistant and susceptible wheat and barley under BYDV stress (v0.2)"

2018

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Barley yellow dwarf virus-PAV (BYDV-PAV) is one of the major viruses causing a widespread and serious viral disease affecting cereal crops. To gain a better understanding of plant defence mechanisms of BYDV resistance genes (Bdv2 and Yd2) against BYDV-PAV infection, the differences in agronomical, biochemical and histological changes between susceptible and resistant wheat and barley cultivars were investigated. We found that root growth and total dry matter of susceptible cultivars showed greater reduction than that of resistant ones after infection. BYDV infected leaves in susceptible wheat and barley cultivars showed a significant reduction in photosynthetic pigments, an increase in the concentration of reducing sugar. The protein levels were also low in infected leaves. There was a significant increase in total phenol contents in resistant cultivars, which might reflect a protective mechanism of plants against virus infection. In phloem tissue, sieve elements (SE) and companion cells (CC) were severely damaged in susceptible cultivars after infection. It is suggested that restriction of viral movement in the phloem tissue and increased production of phenolic compounds may play a role in the resistance and defensive mechanisms of both Bdv2 and Yd2 against virus infection.

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Section: Discussionsupporting

confidence: 88%

Peer Review #4 of "Agronomical, biochemical and histological response of resistant and susceptible wheat and barley under BYDV stress (v0.2)"

2018

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“…The results of this study revealed wide distribution of BYD viruses and confirmed the dominance of BYDV‐PAV in central and southern provinces of Iran as the major cereal production regions of the country. Failure to detect BYDV from some samples with typical BYD symptoms by TPIA and ELISA may indicate presence of highly divergent isolates or involvement of other viruses (Bukvayová et al. 2006).…”

Section: Discussionmentioning

confidence: 99%

Distribution of Cereal Luteoviruses and Molecular Diversity of BYDV-PAV Isolates in Central and Southern Iran: Proposal of a New Species in the GenusLuteovirus

Pakdel¹,

Afsharifar²,

Niazi‎³

et al. 2010

Journal of Phytopathology

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During a survey, 148 wheat, 70 barley and 24 wild grass samples of plants showing symptoms of yellowing or reddening of leaves and general stunting were collected in central and southern provinces of Iran and tested for Barley yellow dwarf virus (BYDV) and Cereal yellow dwarf virus (CYDV) infection by enzymelinked immunosorbent assay (ELISA) and tissue print immunoassay (TPIA). The results showed the presence of the viruses in most regions. Positive reactions to BYDV-PAV, BYDV-MAV, CYDV-RPV and BYDV-SGV antisera were recorded. BYDV-PAV was the most prevalent virus. The genetic diversity of BYDV-PAV isolates in central and southern provinces was studied by analysing ORF1 (903 nt) and read through domain (RTD) (575 nt) of 13 and nine isolates respectively. Sequence analysis of RTD at nucleotide and amino acid levels revealed a high identity (91.8-97.2% and 91.4-100% respectively) between Iranian and other available isolates in the GenBank. However, in regards to ORF1, a high genetic diversity among Iranian and other known PAV isolates at both amino acid (2-16.9%) and nucleotide (4.1-16.5%) levels were detected. Based on phylogenetic analysis of ORF1, two major groups of BYDV-PAV isolates were distinguished. The Iranian isolates were divided between the two clusters. Our results suggest that the occurrence of two genetically distinct groups of PAV isolates in central and southern Iran, from which according to the ICTV criteria for species demarcation in the family Luteoviridae, four isolates from central parts of the country, qualify for designation as new species.

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“…Vacke [16] indicated that favourable climatic conditions can prolong vector migration, enhance vector population and consequently, increase their potential to transmit virus in wheat stands. Bukvayová [17] also attributed the epidemiology of vector-transmissible viruses to be related to weather conditions.…”

Section: Discussionmentioning

confidence: 99%

Distribution and Detection of Cowpea Viruses Infecting Cowpea in Uganda

Orawu¹,

Obuo²,

Omadi³

2015

AJPS

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Cowpea viruses are economically important diseases of cowpea in the major growing areas of Uganda and have inflicted negatively on food security, nutrition and income for many households. The objective of the study was to determine the prevalence and identity of viruses infecting cowpea in the growing districts of Uganda. Surveys were conducted in the field of grown cowpea, and virus symptoms were recorded on the basis of virus incidence and severity in the districts of Apac, Lira, Pader and Kumi. Symptomatic virus leaf samples were also collected from the same fields surveyed for serological test for detection of virus types using antibodies to cowpea aphid-borne mosaic virus (CABMV), cowpea mild mottle virus (CPMMV), cowpea severe mosaic virus (CPSMV), cowpea mosaic virus (CPMV), cowpea chlorotic mottle virus (CPCMV), cucumber mosaic virus (CMV) and cowpea chlorotic mosaic virus (CCMV) in double antibody sandwich enzyme-linked immunosorbent assay (DAS-ELISA). Results showed that there was the highest percentage of incidence and severity in Kumi (85.4% and 13.8%, respectively) with the lowest percentage of incidence and severity observed in Apac (55.9% and 4.7%, respectively). Serological test revealed the presence of CABMV, CPMMV, CPSMV and CMV in the leaf samples as the major virus types in the surveyed districts. However, CPCMV, CPMV and CCMV were not detected in the leaf samples surveyed in the cowpea growing districts. Serological test also revealed that among the virus types detected, single and multiple virus types occurred in the plant samples. The highest single virus type occurring in the plant samples was CPMMV (11.6%) and the lowest was CABMV (1.8%). The virus types namely CMV, CABMV, CPMMV and CPSMV occurred in combinations with proportion of 7.1% in the infected plant samples. Therefore, this information obtained on the virus types provides an opportunity for breeders to develop cowpea variety with multiple resistance genes to control several virus types infecting cowpea.

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Occurrence of dwarf virus of winter wheat and barley in several regions of Slovakiaduring the growing seasons 2001-2004

Abstract: The aim of the study was to monitor the incidence and to detect the presence of viruses of yellow dwarfness in barley (BYDV-PAV, BYDV-RMV), of yellow dwarfness in cereals (CYDV-RPV) and dwarfness in wheat (WDV) in stands of winter wheat and winter barley in Slovakia.

Cited by 20 publications

References 12 publications

Peer Review #4 of "Agronomical, biochemical and histological response of resistant and susceptible wheat and barley under BYDV stress (v0.2)"

Peer Review #4 of "Agronomical, biochemical and histological response of resistant and susceptible wheat and barley under BYDV stress (v0.2)"

Distribution of Cereal Luteoviruses and Molecular Diversity of BYDV-PAV Isolates in Central and Southern Iran: Proposal of a New Species in the GenusLuteovirus

Distribution and Detection of Cowpea Viruses Infecting Cowpea in Uganda

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