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Modelling interference between vectors of non-persistently transmitted plant viruses to identify effective control strategies

Published version
Peer-reviewed

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Abstract

Aphids are the primary vector of plant viruses. Transient aphids, which probe several plants per day, are considered to be the principal vectors of non-persistently transmitted (NPT) viruses. However, resident aphids, which can complete their life cycle on a single host and are affected by agronomic practices, can transmit NPT viruses as well. Moreover, they can interfere both directly and indirectly with transient aphids, eventually shaping plant disease dynamics. By means of an epidemiological model, originally accounting for ecological principles and agronomic practices, we explore the consequences of fertilization and irrigation, pesticide deployment and roguing of infected plants on the spread of viral diseases in crops. Our results indicate that the spread of NPT viruses can be i) both reduced or increased by fertilization and irrigation, depending on whether the interference is direct or indirect; ii) counter-intuitively increased by pesticide application and iii) reduced by roguing infected plants. We show that a better understanding of vectors’ interactions would enhance our understanding of disease transmission, supporting the development of disease management strategies.

Description

Funder: Canceropôle PACA; funder-id: http://dx.doi.org/10.13039/501100006331


Funder: Avignon Université

Keywords

Research Article, Biology and life sciences, Medicine and health sciences

Journal Title

PLOS Computational Biology

Conference Name

Journal ISSN

1553-734X
1553-7358

Volume Title

17

Publisher

Public Library of Science