RT-PCR analysis of PSTVd aphid transmission in association with PLRV

Singh, R. P.; Kurz, Jolanta

doi:10.1080/07060669709501070

Cited by 13 publications

(6 citation statements)

References 18 publications

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“…PSTVd is transmitted from plants that are also infected with PLRV (Salazar et al, 1995;Singh and Kurz, 1997) though there is some doubt as to whether the viroid is encapsidated in PLRV coat protein. PSTVd is transmitted from plants that are also infected with PLRV (Salazar et al, 1995;Singh and Kurz, 1997) though there is some doubt as to whether the viroid is encapsidated in PLRV coat protein.…”

Section: Dependent Transmission (Reviewed Bymentioning

confidence: 99%

Plant to Plant Movement

2014

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Section: Dependent Transmission (Reviewed Bymentioning

confidence: 99%

Plant to Plant Movement

2014

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“…Although natural transmission by aphids, pollen and seeds was reported for some viroids (12,31,35), neither CEVd nor HSVd is known to be seedborne in citrus (2,3) or to have natural vectors (12,17). The omnipresence of several viroid species in old clone citrus trees (3,6) and grapevines (19,30) was blamed mainly on mechanical transmission (10,25,33) and the lack of sanitation practices (3,12,25) of past horticulturists.…”

Section: Discussionmentioning

confidence: 99%

Goat horns: Platforms for viroid transmission to fruit trees?

Cohen¹,

Batuman²,

Moskowits³

et al. 2005

Phytoparasitica

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Mechanical inoculations with contaminating tools and propagation of infected budwood were considered the main causes for the omnipresence of multiple viroid species among citrus and other Middle Eastern and Mediterranean fruit trees and grapevines. However, neither means could explain viroid infections of wild trees -scattered on terrains inaccessible to humansnor the finding of similar viroids among graft-incompatible plants. Northern hybridization of RNA extracts made of scrapings from the surfaces of goat (Capra hircus) horns that were rubbed against etrog (Citrus medica) stems infected with a citrus viroids complex, revealed accumulation of considerable amounts of Citrus exocortis viroids (CEVd) and Hop stunt viroids (HSVd). Experimental transmission of both CEVd and HSVd was obtained by rubbing healthy citrus plants with goat horns that had been rubbed 24 h earlier on infected etrog stems. These results implicate goats as possible vectors of viroids. Transmission via goats could have facilitated the long-range spread of viroids among cultivated and wild plants and vice versa and also among graft-incompatible plants.

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“…Infections in tomato crops were found to spread rapidly within a row [10][11][12] and evidence was obtained that outbreaks in pepper and tomato crops were the result of mechanical transfer from symptomless-infected ornamentals and weeds, e.g., [13,14]. Regarding the role of insects in the spread of pospiviroids, aphids have been found to transmit PSTVd in mixed infections with potato leaf roll virus (PLRV) in potatoes [15,16], and tomato chlorotic dwarf viroid (TCDVd) with PLRV in tomatoes [17]. In addition, pollination by bumblebees has been associated with the spread of tomato apical stunt viroid (TASVd) [18,19] but was not observed for PSTVd [20].…”

Section: Introductionmentioning

confidence: 99%

Possible Overestimation of Seed Transmission in the Spread of Pospiviroids in Commercial Pepper and Tomato Crops Based on Large-Scale Grow-Out Trials and Systematic Literature Review

Verhoeven¹,

Botermans²,

Schoen³

et al. 2021

Plants

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Several outbreaks of pospiviroids have been reported in pepper and tomato crops worldwide. Tracing back the origin of the infections has led to different sources. In some cases, the infections were considered to result from seed transmission. Other outbreaks were related to transmission from ornamental crops and weeds. Pospiviroids, in particular potato spindle tuber viroid, are regulated by many countries because they can be harmful to potatoes and tomatoes. Seed transmission has been considered an important pathway of introduction and spread. However, the importance of this pathway can be questioned. This paper presents data on seed transmission from large-scale grow-out trials of infested pepper and tomato seed lots produced under standard seed-industry conditions. In addition, it presents the results of a systematic review of published data on seed transmission and outbreaks in commercial pepper and tomato crops. Based on the results of the grow-out trials and review of the literature, it was concluded that the role of seed transmission in the spread of pospiviroids in practice is possibly overestimated.

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RT-PCR analysis of PSTVd aphid transmission in association with PLRV

Cited by 13 publications

References 18 publications

Plant to Plant Movement

Plant to Plant Movement

Goat horns: Platforms for viroid transmission to fruit trees?

Possible Overestimation of Seed Transmission in the Spread of Pospiviroids in Commercial Pepper and Tomato Crops Based on Large-Scale Grow-Out Trials and Systematic Literature Review

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