Effects of potato virus S and two strains of potato virus X on yields of Russet Burbank, Kennebec, and Katahdin cultivars in Maine

Manzer, F. E.; Merriam, D. C.; Hepler, P. R.

doi:10.1007/bf02852178

Cited by 23 publications

(7 citation statements)

References 11 publications

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“…1), demonstrating the widespread occurrence of PVS in this seed lot. However, no visual symptoms appeared to be associated with the virus, suggesting that PVS alone does not induce visible symptoms in 'Kennebec' plants, consistent with previous observations (Manzer et al, 1978). PVX was found in four samples, all co-present with another virus species, either PVS (#10) or PVY (#6, #8 and #12).…”

Section: Viruses Infecting 'Kennebec' Plants In the Field Plotsupporting

confidence: 87%

Response of potato, tobacco andPhysalis floridanaplants to mixed infection with PVX, PVY^NTNand PVY° strains

Nie

Singh

2013

Canadian Journal of Plant Pathology

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Post-harvest screening of potato 'Kennebec' revealed a Potato virus Y (PVY) incidence of 15.8%, a rate that is unusually high for a cultivar possessing a high level of field resistance to the virus. Randomly selected tubers were planted in a field plot and the resulting plants were monitored. Approximately 16% of plants developed symptoms ranging from mild mosaic symptoms to severe necrosis/rugosity/stunting. ELISA and RT-PCR analysis revealed that infections with Potato virus S (PVS), Potato virus X (PVX) and PVY, mostly in mixed-infections, occurred commonly in 14 sampled plants. Two strains, namely the common strain (PVY • ) and the recombinant tuber necrotic strain (PVY NTN ) were identified in the PVY-positive plants. In general, mild mosaic was associated with infections with PVX and PVS; intermediated mosaic was associated with PVS and PVY NTN infections; whereas severe leaf deformation/necrosis/drop symptoms were associated with PVY NTN and PVX co-infections, or with PVY • and either PVS or PVX co-infections. Virus-free plantlets of potato 'Kennebec' were mechanically inoculated with PVX, PVY • , and PVY NTN alone or with PVX+PVY • or PVX+PVY NTN combinations in the greenhouse. Single infections with PVY • or mixed-infections with PVX+PVY • or PVX+PVY NTN incited severe mosaic symptoms and systemic necrosis soon after inoculation; whereas single infections with PVX and PVY NTN induced mild to intermediate mosaic symptoms only. The most severe symptoms occurred in the mixed-inoculation with PVX+PVY NTN , demonstrating dramatic synergism between these strains. Similarly, profound PVX and PVY NTN synergism was also found in tobacco and Physalis floridana plants, suggesting that the strain of PVY plays an important role in the level of synergistic reactions between PVX and PVY on host plants. Résumé:Le criblage consécutif à la récolte de la pomme de terre 'Kennebec' a révélé une incidence de 15,8 % du virus Y de la pomme de terre, soit un taux anormalement élevé pour un cultivar possédant un fort degré de résistance au virus en champ. Des tubercules choisis aléatoirement ont été plantés dans une parcelle de terrain et les plants qui en ont résulté ont été suivis de près. Environ 16 % des plants ont développé des symptômes variant des symptômes bénins de la mosaïque à ceux plus graves de la nécrose en passant par la rugosité ou le rabougrissement. Des tests ELISA et des analyses par RT-PCR ont révélé que des infections causées par les virus S (VSPT), X (VXPT) et Y (VYPT) de la pomme de terre, principalement sous forme d'infections mixtes, sont apparues couramment chez 14 plants échantillonnés. Deux souches, à savoir la souche ordinaire (VYPT • ) et la souche recombinante causant la nécrose des tubercules (VYPT NTN ), ont été identifiées chez les plants réceptifs au VYPT. En général, la mosaïque bénigne était associée aux infections causées par le VXPT et le VSPT; la mosaïque moyennement virulente, aux infections causées par le VSPT et le VYPT NTN , tandis que la déformation grave du feuillage, la nécrose et le...

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Section: Viruses Infecting 'Kennebec' Plants In the Field Plotsupporting

confidence: 87%

Response of potato, tobacco andPhysalis floridanaplants to mixed infection with PVX, PVY^NTNand PVY° strains

Nie

Singh

2013

Canadian Journal of Plant Pathology

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“…This is important because estimates of disease effect on yield of soybean for management or survey purposes are made on the assumption that each pathogen causmg a soybean disease acts independently. Similar positive synergistic-yield loss interactions have been reported on potato early-dying complex (RowE et al 1985) and potato virus S X potato virus X interactions (MANZER et al 1978). Another type of interaction was similarly noted in this study between Dpc + soybean cyst nematode (caused by Heterodera glycines Ichinohe), Hg + Psg, and Dpc + Hg + Psg where the combined effects of the pathogens on the yield of soybean cv.…”

Section: Discussionsupporting

confidence: 87%

“…Little IS known on the combined effect of two or more pathogens affecting yields of soybean. Synergistic yield-loss interactions have been reported in the potato early-dying complex (RowE et al 1985) and potato virus S X potato virus X (MANZER et al 1978). Fiowever, a preliminary study conducted on the effect of multiple disease infestation in soybean indicated that no synergisms were noted as far as symptomatology of the diseases were concerned on soybean cv.…”

Section: Introductionmentioning

confidence: 99%

Effects of Induced Epidemics of Heterodera glycines, Diaporthe phaseolorum var. caulivora, and Pseudomonas syringae pv. glycinea in Single Inoculations or in Combinations on Soybean Yield and Other Agronomic Characters

Pacumbaba

1992

J Agronomy Crop Science

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The effects of induced epidemics of Heterodera glycines (Hg), Diaporthe phaseolorum var. caulivora (Dpc), and Pseudomonas syringae pv. glycinea (Psg) in single inoculations or in combinations on soybean yield and other agronomic characters were studied in the field for 3 planting dates from 1985–1987. Agronomic characters, such as size of nodules, number of pods, plant heights, yields, and disease ratings and infestations of soybean were noticeably influenced by the induced epidemics of the pathogens affecting soybeans. Similarly, the induced epidemics of these pathogens also produced either a negative or positive correlation coefficient of the various indicated agronomic characters. Synergistic‐yield loss interaction between Dpc + Psg was positive. However, the synergistic‐yield loss interactions between Dpc + Hg, Hg + Psg, and Dpc + Hg + Psg were negative. Based on the symptomatology of the diseases, there were no synergisms noted on soybean.

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“…Additionally, our models per variety estimate that losses caused by this virus range 362 from 27 to 43%. Losses in yield caused by this virus alone are variable but reports mention that it is able to 363 reduce up to 20% of yield (Manzer et al 1978;Hooker 1981). Special attention need to be given to this 364 virus since the results of our survey revealed a high level of incidence (Table 3 and Table 4 Gabriela to PYVV proposes a promising case of investigation to understand this interaction, but also other 373 interactions due to the fact that this variety registered the highest seed-borne pest and pathogen diversity 374 (Figure 1 and Table 3) and the highest yield (Table 4).…”

Section: Yield Losses Caused By Seed Borne Pests 343mentioning

confidence: 99%

Health quality of seed potato and yield losses in Ecuador

Navarrete¹,

Panchi²,

Kromann³

et al. 2017

Preprint

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Low potato productivity in Ecuador is partly attributed to the use of low quality seed tubers. However, seed health quality in Ecuador, and its interaction with altitude and yield has been poorly investigated. We surveyed 11 farmers’ fields in Ecuador in 2010 to determine incidence and severity of pathogens and pests affecting foliage and seed tubers, and to determine the influence of altitude and seed sources over seed health quality (pathogen and pest diversity in/on the seed tuber). Additionally, a field experiment was planted in CIP-Quito using assessed seed tubers collected from surveyed farmers’ fields, during 2010 and 2011, to determine yield responses to seed health quality. Results show that foliage was mainly affected by late blight and flea beetle damages while seed tubers were predominantly affected by black scurf, andean weevil damages, potato virus S and potato virus X. We found that seed health quality was similar among farmers’ seed sources, and detected that increase in altitude decreased seed-borne virus diversity. Only seed-borne pathogens and presence of mechanical damages were found to explain yield variation. Seed-borne pathogens affecting yield variation were black scurf on seed tubers, potato virus S, and potato yellow vein virus. However, these factors changed when regressions were performed per seed source or variety. The yield responses to seed health quality of each variety should be considered to fine-tune integrated pest management strategies.

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Effects of potato virus S and two strains of potato virus X on yields of Russet Burbank, Kennebec, and Katahdin cultivars in Maine

Cited by 23 publications

References 11 publications

Response of potato, tobacco andPhysalis floridanaplants to mixed infection with PVX, PVY^NTNand PVY° strains

Response of potato, tobacco andPhysalis floridanaplants to mixed infection with PVX, PVY^NTNand PVY° strains

Effects of Induced Epidemics of Heterodera glycines, Diaporthe phaseolorum var. caulivora, and Pseudomonas syringae pv. glycinea in Single Inoculations or in Combinations on Soybean Yield and Other Agronomic Characters

Health quality of seed potato and yield losses in Ecuador

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Effects of potato virus S and two strains of potato virus X on yields of Russet Burbank, Kennebec, and Katahdin cultivars in Maine

Cited by 23 publications

References 11 publications

Response of potato, tobacco andPhysalis floridanaplants to mixed infection with PVX, PVYNTNand PVY° strains

Response of potato, tobacco andPhysalis floridanaplants to mixed infection with PVX, PVYNTNand PVY° strains

Effects of Induced Epidemics of Heterodera glycines, Diaporthe phaseolorum var. caulivora, and Pseudomonas syringae pv. glycinea in Single Inoculations or in Combinations on Soybean Yield and Other Agronomic Characters

Health quality of seed potato and yield losses in Ecuador

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Product

Resources

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Response of potato, tobacco andPhysalis floridanaplants to mixed infection with PVX, PVY^NTNand PVY° strains

Response of potato, tobacco andPhysalis floridanaplants to mixed infection with PVX, PVY^NTNand PVY° strains