Virus tolerance and recovery from viral induced-symptoms in plants are associated with transcriptome reprograming

Virus tolerance and recovery from viral induced-symptoms in plants are associated with... Plant recovery from viral infection is characterized by initial severe systemic symptoms which progressively decrease, leading to reduced symptoms or symptomless leaves at the apices. A key feature to plant recovery from invading nucleic acids such as viruses is the degree of the host’s initial basal immunity response. We review current links between RNA silencing, recovery and tolerance, and present a model in which, in addition to regulation of resistance (R) and other defence-related genes by RNA silencing, viral infections incite perturbations of the host physiological state that trigger reprogramming of host responses to by-pass severe symptom development, leading to partial or complete recovery. Recovery, in particular in perennial hosts, may trigger tolerance or virus accommodation. We discuss evidence suggesting that plant viruses can avoid total clearance but persistently replicate at low levels, thereby modulating the host transcriptome response which minimizes fitness cost and triggers recovery from viral-symptoms. In some cases a susceptible host may fail to recover from initial viral systemic symptoms, yet, accommodates the persistent virus throughout the life span, a phenomenon herein referred to as non-recovery accommodation, which differs from tolerance in that there is no distinct recovery phase, and differs from susceptibility in that the host is not killed. Recent advances in plant recovery from virus-induced symptoms involving host transcriptome reprogramming are discussed. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Plant Molecular Biology Springer Journals

Virus tolerance and recovery from viral induced-symptoms in plants are associated with transcriptome reprograming

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Publisher
Springer Netherlands
Copyright
Copyright © 2015 by Springer Science+Business Media Dordrecht
Subject
Life Sciences; Plant Sciences; Biochemistry, general; Plant Pathology
ISSN
0167-4412
eISSN
1573-5028
D.O.I.
10.1007/s11103-015-0362-6
Publisher site
See Article on Publisher Site

References

  • HC-pro, a potyvirus RNA silencing suppressor, cancels cycling of Cucumber mosaic virus in Nicotiana benthamiana plants
    Fukuzawa, N; Itchoda, N; Goto, K; Masuta, C; Matsumura, T
  • Living with the enemy: viral persistent infections from a friendly viewpoint
    Goic, B; Saleh, M-C
  • Differential tomato transcriptomics responses induced by pepino mosaic virus isolates with differential aggressiveness
    Hanssen, IM; Peter van Esse, H; Ballester, AR; Hogewoning, SW; Parra, NO; Lievens, A; Bovy, AG; Thomma, BP
  • Durable virus resistance in plants through conventional approaches: a challenge
    Lecoq, H; Moury, B; Desbiez, C; Palloix, A; Pitrat, M
  • Why mosaic? Gene expression profiling of African cassava mosaic virus-infected cassava reveals the effect of chlorophyll degradation on symptom development
    Liu, J; Yang, J; Bi, H; Zhang, P

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