Distribution and pathway for phloem-dependent movement of Melon necrotic spot virus in melon plants.

Molecular Plant Pathology
Blanca Gosalvez-BernalM Amelia Sanchez-Pina

Abstract

The translocation of Melon necrotic spot virus (MNSV) within tissues of inoculated and systemically infected Cucumis melo L. 'Galia' was studied by tissue-printing and in situ hybridization techniques. The results were compatible with the phloem vascular components being used to spread MNSV systemically by the same assimilate transport route that runs from source to sink organs. Virus RNAs were shown to move from the inoculated cotyledon toward the hypocotyl and root system via the external phloem, whereas the upward spread through the stem to the young tissues took place via the internal phloem. Virus infection was absent from non-inoculated source tissues as well as from both shoot and root apical meristems, but active sink tissues such as the young leaves and root system were highly infected. Finally, our results suggest that the MNSV invasion of roots is due to virus replication although a destination-selective process is probably necessary to explain the high levels of virus accumulation in roots. This efficient invasion of the root system is discussed in terms of natural transmission of MNSV by the soil-borne fungal vector.

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Citations

Apr 22, 2015·Journal of Proteomics·Marta Serra-SorianoVicente Pallás
Dec 15, 2015·Molecular Plant Pathology·Cèlia Guiu-AragonésAna Montserrat Martín-Hernández
Oct 4, 2016·Frontiers in Microbiology·Ida Bagus AndikaLiying Sun
Feb 4, 2010·Molecular Plant-microbe Interactions : MPMI·Ainhoa GenovésVicente Pallás
Jun 1, 2012·Annals of Botany·Harry S ParisEfraim Lev
Mar 7, 2021·Viruses·María Amelia Sánchez PinaMiguel A Aranda

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