Plant Virus Transmission Through Vegetative Propagules (Asexual Reproduction)

Sastry, K. Subramanya

doi:10.1007/978-81-322-0813-6_9

Cited by 7 publications

(5 citation statements)

References 140 publications

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“…Viruses such as PYVV have also been reported to be dispersed through vegetative propagules ( Salazar et al, 2000 ; Sastry, 2013 ), which could be an efficient mechanism of long-distance dispersion boosted by human transportation of infected tubers. According to official data, less than 5% of the area planted with potatoes in Colombia comes from certified seed tubers, and even when seeds are certified, they are not currently tested for PYVV infection ( Fedepapa, 2016 ).…”

Section: Discussionmentioning

confidence: 99%

“…This virus is classified as a Crinivirus , a genus that includes the whitefly transmitted members of the family Closteroviridae ( Wisler et al, 1998 ; Salazar et al, 2000 ). Multiple studies report that PYVV can be transmitted by the greenhouse whitefly (GWF), Trialeurodes vaporariorum (Westwood) (Hemiptera: Aleyrodidae) ( Salazar et al, 2000 ; Barragan and Guzmán-Barney, 2014 ), but it can also be spread through vegetative propagules such as infected tubers ( Salazar et al, 2000 ; Sastry, 2013 ). PYVD symptoms are described as vein yellowing with green interveinal spaces, which are associated with a decrease of photosynthetic capacity, plant vigor, and early senescence ( Salazar et al, 2000 ; Chávez et al, 2009 ).…”

Section: Introductionmentioning

confidence: 99%

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Vector Transmission Alone Fails to Explain the Potato Yellow Vein Virus Epidemic among Potato Crops in Colombia

et al. 2017

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The potato yellow vein disease, caused by the potato yellow vein virus (PYVV), is a limiting potato disease in northern South America. The virus can be transmitted either by the greenhouse whitefly (GWF), Trialeurodes vaporariorum (Westwood) (Hemiptera: Aleyrodidae), or through vegetative propagules, such as infected tubers. Recently, GWF populations have been spotlighted as one of the main drivers of PYVV re-emergence, and consequently, PYVV management has been predominantly directed toward vector control, which is heavily based on insecticide use. However, the drivers of the PYVV outbreaks as well as the contribution of GWF populations on the spread of PYVV among potato crops are still not completely understood. This study aims to assess the role of the GWF as a driver of the PYVV epidemic in the potato-producing areas in Colombia, one of the countries more severely affected by the PYVV epidemic, and whose geography allows the study of the spatial association between the vector and the disease epidemic across a wide altitude range. The geographical clusters where the PYVV epidemic is concentrated, as well as those of farms affected by the GWF were identified using a novel spatial epidemiology approach. The influence of altitude range on the association between PYVV and T. vaporarioum was also assessed. We found a relatively poor spatial association between PYVV epidemic and the presence of the GWF, especially at altitudes above 3,000 m above mean sea level. Furthermore, GWF populations could only explain a small fraction of the extent of the PYVV epidemic in Colombia. Movement of infected seed tubers might be the main mechanism of dispersion, and could be a key driver for the PYVV infection among potato crops. Agricultural policies focused on improving quality of seed tubers and their appropriate distribution could be the most efficient control intervention against PYVV dispersion.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Vector Transmission Alone Fails to Explain the Potato Yellow Vein Virus Epidemic among Potato Crops in Colombia

et al. 2017

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“…Fruit plants such as mango, citrus, guava, grapes, pome and stone fruits, banana, pomegranate, and strawberry, among others, are mostly multiplied by budding, grafting, cuttings, suckers, rhizomes, etc. Thus, if the mother plant carries a transmissible disease, it is passed to the offspring by vegetative propagation [375,376]. Such infected nursery plants serve as one of the important reservoirs for the introduction and spread of diseases and new pathogens into disease-free territories.…”

Section: Biosensorsmentioning

confidence: 99%

Viruses Infecting Trees and Herbs That Produce Edible Fleshy Fruits with a Prominent Value in the Global Market: An Evolutionary Perspective

Rodríguez‐Verástegui

Ramírez-Zavaleta²,

Capilla-Hernández³

et al. 2022

Plants

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Trees and herbs that produce fruits represent the most valuable agricultural food commodities in the world. However, the yield of these crops is not fully achieved due to biotic factors such as bacteria, fungi, and viruses. Viruses are capable of causing alterations in plant growth and development, thereby impacting the yield of their hosts significantly. In this work, we first compiled the world′s most comprehensive list of known edible fruits that fits our definition. Then, plant viruses infecting those trees and herbs that produce fruits with commercial importance in the global market were identified. The identified plant viruses belong to 30 families, most of them containing single-stranded RNA genomes. Importantly, we show the overall picture of the host range for some virus families following an evolutionary approach. Further, the current knowledge about plant-virus interactions, focusing on the main disorders they cause, as well as yield losses, is summarized. Additionally, since accurate diagnosis methods are of pivotal importance for viral diseases control, the current and emerging technologies for the detection of these plant pathogens are described. Finally, the most promising strategies employed to control viral diseases in the field are presented, focusing on solutions that are long-lasting.

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“…Given the high frequency of vegetative transmission, it is essential to understand how this agricultural practice impacts changes in viral prevalence and species diversity. A few studies have evaluated the effect of vegetative transmission in other viral systems in potato and sugar cane (Sastry, 2013 ; Ranawaka et al, 2020 ). One study in cassava showed that CMB diversity increases through successive rounds of vegetative propagation (Aimone et al, 2021b ).…”

Section: Introductionmentioning

confidence: 99%

Cassava begomovirus species diversity changes during plant vegetative cycles

Dye,

Muga,

Mwangi

et al. 2023

Front. Microbiol.

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Cassava is a root crop important for global food security and the third biggest source of calories on the African continent. Cassava production is threatened by Cassava mosaic disease (CMD), which is caused by a complex of single-stranded DNA viruses (family: Geminiviridae, genus: Begomovirus) that are transmitted by the sweet potato whitefly (Bemisia tabaci). Understanding the dynamics of different cassava mosaic begomovirus (CMB) species through time is important for contextualizing disease trends. Cassava plants with CMD symptoms were sampled in Lake Victoria and coastal regions of Kenya before transfer to a greenhouse setting and regular propagation. The field-collected and greenhouse samples were sequenced using Illumina short-read sequencing and analyzed on the Galaxy platform. In the field-collected samples, African cassava mosaic virus (ACMV), East African cassava mosaic virus (EACMV), East African cassava mosaic Kenya virus (EACMKV), and East African cassava mosaic virus-Uganda variant (EACMV-Ug) were detected in samples from the Lake Victoria region, while EACMV and East African mosaic Zanzibar virus (EACMZV) were found in the coastal region. Many of the field-collected samples had mixed infections of EACMV and another begomovirus. After 3 years of regrowth in the greenhouse, only EACMV-like viruses were detected in all samples. The results suggest that in these samples, EACMV becomes the dominant virus through vegetative propagation in a greenhouse. This differed from whitefly transmission results. Cassava plants were inoculated with ACMV and another EACMV-like virus, East African cassava mosaic Cameroon virus (EACMCV). Only ACMV was transmitted by whiteflies from these plants to recipient plants, as indicated by sequencing reads and copy number data. These results suggest that whitefly transmission and vegetative transmission lead to different outcomes for ACMV and EACMV-like viruses.

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Plant Virus Transmission Through Vegetative Propagules (Asexual Reproduction)

Cited by 7 publications

References 140 publications

Vector Transmission Alone Fails to Explain the Potato Yellow Vein Virus Epidemic among Potato Crops in Colombia

Vector Transmission Alone Fails to Explain the Potato Yellow Vein Virus Epidemic among Potato Crops in Colombia

Viruses Infecting Trees and Herbs That Produce Edible Fleshy Fruits with a Prominent Value in the Global Market: An Evolutionary Perspective

Cassava begomovirus species diversity changes during plant vegetative cycles

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