New Experimental Hosts of Tobacco streak virus and Absence of True Seed Transmission in Leguminous Hosts

Vemana, K.; Jain, Rakesh

doi:10.1007/s13337-010-0021-0

Cited by 33 publications

(11 citation statements)

References 26 publications

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“…However, they are genetically distinct (Sharman & Thomas, 2013) and appear to have differences in host range and seed transmissibility. No seed transmission of TSV from India has been reported from several studies of crop plants and weeds including sunflower, groundnut (peanut), mung bean, soybean and parthenium (Prasada Rao et al, 2003Rao et al, , 2009Reddy et al, 2007;Vemana & Jain, 2010). In contrast, we have demonstrated high rates of seed transmission from several Asteraceae species for TSV-parthenium, TSV-crownbeard and AgLV.…”

Section: Discussioncontrasting

confidence: 43%

Natural host range, thrips and seed transmission of distinctTobacco streak virusstrains in Queensland, Australia

2015

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Diseases caused by Tobacco streak virus (TSV) have resulted in significant crop losses in sunflower and mung bean crops in Australia. Two genetically distinct strains from central Queensland, TSV-parthenium and TSV-crownbeard, have been previously described. They share only 81% total-genome nucleotide sequence identity and have distinct major alternative hosts, Parthenium hysterophorus (parthenium) and Verbesina encelioides (crownbeard). We developed and used strain-specific multiplex Polymerase chain reactions (PCRs) for the three RNA segments of TSV-parthenium and TSV-crownbeard to accurately characterise the strains naturally infecting 41 hosts species. Hosts included species from 11 plant families, including 12 species endemic to Australia. Results from field surveys and inoculation tests indicate that parthenium is a poor host of TSV-crownbeard. By contrast, crownbeard was both a natural host of, and experimentally infected by TSV-parthenium but this infection combination resulted in non-viable seed. These differences appear to be an effective biological barrier that largely restricts these two TSV strains to their respective major alternative hosts. TSV-crownbeard was seed transmitted from naturally infected crownbeard at a rate of between 5% and 50% and was closely associated with the geographical distribution of crownbeard in central Queensland. TSV-parthenium and TSV-crownbeard were also seed transmitted in experimentally infected ageratum (Ageratum houstonianum) at rates of up to 40% and 27%, respectively. The related subgroup 1 ilarvirus, Ageratum latent virus, was also seed transmitted at a rate of 18% in ageratum which is its major alternative host. Thrips species Frankliniella schultzei and Microcephalothrips abdominalis were commonly found in flowers of TSV-affected crops and nearby weed hosts. Both species readily transmitted TSV-parthenium and TSV-crownbeard. The results are discussed in terms of how two genetically and biologically distinct TSV strains have similar life cycle strategies in the same environment.

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Section: Discussioncontrasting

confidence: 43%

Natural host range, thrips and seed transmission of distinctTobacco streak virusstrains in Queensland, Australia

2015

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“…Prasad Rao et al, (2003a) carried out host range studies with Tobacco streak virus isolate from peanut (Arachis hypogaea L.) and suggested that the virus was able to infect 37 plant species. Similarly, several workers have reported wide host range of TSV (Anjula, 2000;Lavanya, 2001;Ramaiah et al, 2001;Reddy et al, 2002;Linga Reddy, 2003 andVemana andjain, 2010).…”

Section: Resultsmentioning

confidence: 84%

Biological characterization and host range of Tobacco Streak Virus (TSV)

Kumar

Devi

Reddy

et al. 2018

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TSV isolates (GNAP7. SFAP17 and CUKA13) maintained on cowpea were cross inoculated on five popularly grown varieties and hybrids of groundnut (JL-24, K-6, Prasuna, K-9, Kadiri harithandra), sunflower (KBSH-44, DRSH-1, NDSH-1012, Mordent, Sunbred-275) and cucumber (Long green, Poorna, Ageti, Sheetal, Uday). Incubation period required for the initiation of local and systemic symptoms varied among different hosts and cultivars. Local symptoms of veinal necrosis, leaf yellowing and wilting, petiole necrosis, chlorotic spot, tip necrosis and systemic symptoms of mosaic, wilting, necrotic streaks on stem, bud necrosis, axillary shoot proliferation were observed in different hosts and Culivars. Out of 23 plant species tested against TSV by sap inoculation, 15 plant species were susceptible to TSV, which includes Beta vulgaris, Abelmoschus esculentus, Cicer arietinum, Solanum melongena, Ricinus communis, Chrysanthemum indicum, Phaseolus vulgaris, Gerbera jamesonii, Macrotyloma uniflorum, Vigna unguiculata subsp. unguiculata, Tagetus erecta, Allium cepa, Phaseolus coccineus, Solanum lycopersicum, Vigna unguiculata ssp. sesquipedalis.

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“…TSV was detected in almost all the plant parts except endosperm and embryo by sap inoculation in groundnut cv. JL 24 as Indian TSV isolate was non seed transmissible in legume crops [11,13].…”

Section: Discussionmentioning

confidence: 99%

Comparative reaction of popular high yielding spanish and virginia bunch groundnut varieties to Tobacco streak virus

Vemana

Jain

2013

Indian J. Virol.

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Reaction of five spanish (JL 24, TMV 2, Kadiri 6, Kadiri 9 and Anantha) and a virginia (Kadiri 7 Bold) groundnut cultivars was studied against Tobacco streak virus (TSV) by sap inoculation using different age group of plants [7-84 days after sowing (DAS)]. Among different cultivars, incubation period varied from 4 to 28 days and high incubation period recorded in Kadiri 7 Bold. The percent infection decreased with increase in the age of the plants in all the cultivars as it ranged up to 100 % in both pre-flowering (7-21 DAS) and flowering stage (28-63 DAS) plants followed by 50-100 % in maturity stage plants (70-84 DAS) except Kadiri 7 Bold. Similarly, 100 % wilting was observed in pre flowering stage plants against no wilting in maturity stage plants. However, cultivars differed in per cent wilting of flowering stage plants by recording maximum wilting (100 %) in JL24, Kadiri 6 and minimum (25.0 %) in Kadiri 7 Bold. Both localized (necrotic spots, veinal necrosis) and systemic (petiole necrosis, necrotic spots on young leaves, top growing bud and stem necrosis, axillary shoot proliferation, stunting, peg necrosis, pod necrosis, wilting of plant) symptoms induced by TSV were similar among all cultivars without any new symptoms. Prolonged stage of axillary shoot proliferation was observed for the first time in all the cultivars. In maturity stage plants of Kadiri 7 Bold, Kadiri 9 and Anantha, systemic symptoms restricted to leaf and petiole necrosis only. Virus titer varied significantly with the age of plants and inoculum harvest at days post inoculation and least virus titer recorded by Kadiri 7 Bold at all stages of infection. Among different cultivars, Kadiri 7 Bold was least susceptible/tolerant to TSV by registering higher incubation period with less per cent infection, wilt and titer.

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New Experimental Hosts of Tobacco streak virus and Absence of True Seed Transmission in Leguminous Hosts

Cited by 33 publications

References 26 publications

Natural host range, thrips and seed transmission of distinctTobacco streak virusstrains in Queensland, Australia

Natural host range, thrips and seed transmission of distinctTobacco streak virusstrains in Queensland, Australia

Biological characterization and host range of Tobacco Streak Virus (TSV)

Comparative reaction of popular high yielding spanish and virginia bunch groundnut varieties to Tobacco streak virus

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