Genomic RNA accumulation of gentian ovary ring-spot virus and raspberry bushy dwarf virus in pollen tubes

Isogai, Masamichi; Suzuki, Youhei; Matsudaira, Takanori; Yoshikawa, Nobuyuki

doi:10.1007/s10327-018-0795-2

Cited by 6 publications

(1 citation statement)

References 16 publications

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“…Therefore, the process by which viroid invades from a lower part of the style to the ovary seems to be critical for the establishment of horizontal transmission (Figure 1). Recently, it has been experimentally shown in two plant viruses that the virus genomic RNAs leaked out into a culture medium from the growing pollen tubes [43]. Further analysis is needed whether viroid RNAs also mobilize from the elongating pollen tubes to style tissues.…”

Section: Mechanism Of Horizontal Transmissionmentioning

confidence: 99%

Vertical and Horizontal Transmission of Pospiviroids

Matsushita

Yanagisawa

Shimmen

2018

Viruses

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Viroids are highly structured, single-stranded, non-protein-coding circular RNA pathogens. Some viroids are vertically transmitted through both viroid-infected ovule and pollen. For example, potato spindle tuber viroid, a species that belongs to Pospiviroidae family, is delivered to the embryo through the ovule or pollen during the development of reproductive tissues before embryogenesis. In addition, some of Pospiviroidae are also horizontally transmitted by pollen. Tomato planta macho viroid in pollen infects to the ovary from pollen tube during pollen tube elongation and eventually causes systemic infection, resulting in the establishment of horizontal transmission. Furthermore, fertilization is not required to accomplish the horizontal transmission. In this review, we will overview the recent research progress in vertical and horizontal transmission of viroids, mainly by focusing on histopathological studies, and also discuss the impact of seed transmission on viroid dissemination and seed health.

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Section: Mechanism Of Horizontal Transmissionmentioning

confidence: 99%