Arbuscular mycorrhizal symbiosis limits foliar transcriptional responses to viral infection and favors long-term virus accumulation

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Arbuscular mycorrhizal symbiosis limits foliar transcriptional responses to viral infection and favors long-term virus accumulation. / Miozzi, Laura; Catoni, Marco; Fiorilli, Valentina; Mullineaux, Philip M; Accotto, Gian Paolo; Lanfranco, Luisa.

In: Molecular Plant-Microbe Interactions, Vol. 24, No. 12, 12.2011, p. 1562-72.

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Miozzi, Laura ; Catoni, Marco ; Fiorilli, Valentina ; Mullineaux, Philip M ; Accotto, Gian Paolo ; Lanfranco, Luisa. / Arbuscular mycorrhizal symbiosis limits foliar transcriptional responses to viral infection and favors long-term virus accumulation. In: Molecular Plant-Microbe Interactions. 2011 ; Vol. 24, No. 12. pp. 1562-72.

Bibtex

@article{9e991caabde04256acdf4281e35c1171,
title = "Arbuscular mycorrhizal symbiosis limits foliar transcriptional responses to viral infection and favors long-term virus accumulation",
abstract = "Tomato (Solanum lycopersicum) can establish symbiotic interactions with arbuscular mycorrhizal (AM) fungi, and can be infected by several pathogenic viruses. Here, we investigated the impact of mycorrhization by the fungus Glomus mosseae on the Tomato spotted wilt virus (TSWV) infection of tomato plants by transcriptomic and hormones level analyses. In TSWV-infected mycorrhizal plants, the AM fungus root colonization limited virus-induced changes in gene expression in the aerial parts. The virus-responsive upregulated genes, no longer induced in infected mycorrhizal plants, were mainly involved in defense responses and hormone signaling, while the virus-responsive downregulated genes, no longer repressed in mycorrhizal plants, were involved in primary metabolism. The presence of the AM fungus limits, in a salicylic acid-independent manner, the accumulation of abscissic acid observed in response to viral infection. At the time of the molecular analysis, no differences in virus concentration or symptom severity were detected between mycorrhizal and nonmycorrhizal plants. However, in a longer period, increase in virus titer and delay in the appearance of recovery were observed in mycorrhizal plants, thus indicating that the plant's reaction to TSWV infection is attenuated by mycorrhization.",
keywords = "Abscisic Acid/analysis, Biomass, Cyclopentanes/analysis, Down-Regulation/genetics, Gene Expression Profiling, Gene Expression Regulation, Plant/genetics, Glomeromycota/genetics, Lycopersicon esculentum/genetics, Mycorrhizae/genetics, Oligonucleotide Array Sequence Analysis, Oxylipins/analysis, Phenotype, Plant Diseases/microbiology, Plant Growth Regulators/analysis, Plant Leaves/genetics, Plant Roots/genetics, Plant Shoots/genetics, Salicylic Acid/analysis, Signal Transduction, Symbiosis, Time Factors, Tospovirus/physiology, Transcriptome, Up-Regulation/genetics",
author = "Laura Miozzi and Marco Catoni and Valentina Fiorilli and Mullineaux, {Philip M} and Accotto, {Gian Paolo} and Luisa Lanfranco",
year = "2011",
month = dec,
doi = "10.1094/MPMI-05-11-0116",
language = "English",
volume = "24",
pages = "1562--72",
journal = "Molecular Plant-Microbe Interactions",
issn = "0894-0282",
publisher = "American Phytopathological Society",
number = "12",

}

RIS

TY - JOUR

T1 - Arbuscular mycorrhizal symbiosis limits foliar transcriptional responses to viral infection and favors long-term virus accumulation

AU - Miozzi, Laura

AU - Catoni, Marco

AU - Fiorilli, Valentina

AU - Mullineaux, Philip M

AU - Accotto, Gian Paolo

AU - Lanfranco, Luisa

PY - 2011/12

Y1 - 2011/12

N2 - Tomato (Solanum lycopersicum) can establish symbiotic interactions with arbuscular mycorrhizal (AM) fungi, and can be infected by several pathogenic viruses. Here, we investigated the impact of mycorrhization by the fungus Glomus mosseae on the Tomato spotted wilt virus (TSWV) infection of tomato plants by transcriptomic and hormones level analyses. In TSWV-infected mycorrhizal plants, the AM fungus root colonization limited virus-induced changes in gene expression in the aerial parts. The virus-responsive upregulated genes, no longer induced in infected mycorrhizal plants, were mainly involved in defense responses and hormone signaling, while the virus-responsive downregulated genes, no longer repressed in mycorrhizal plants, were involved in primary metabolism. The presence of the AM fungus limits, in a salicylic acid-independent manner, the accumulation of abscissic acid observed in response to viral infection. At the time of the molecular analysis, no differences in virus concentration or symptom severity were detected between mycorrhizal and nonmycorrhizal plants. However, in a longer period, increase in virus titer and delay in the appearance of recovery were observed in mycorrhizal plants, thus indicating that the plant's reaction to TSWV infection is attenuated by mycorrhization.

AB - Tomato (Solanum lycopersicum) can establish symbiotic interactions with arbuscular mycorrhizal (AM) fungi, and can be infected by several pathogenic viruses. Here, we investigated the impact of mycorrhization by the fungus Glomus mosseae on the Tomato spotted wilt virus (TSWV) infection of tomato plants by transcriptomic and hormones level analyses. In TSWV-infected mycorrhizal plants, the AM fungus root colonization limited virus-induced changes in gene expression in the aerial parts. The virus-responsive upregulated genes, no longer induced in infected mycorrhizal plants, were mainly involved in defense responses and hormone signaling, while the virus-responsive downregulated genes, no longer repressed in mycorrhizal plants, were involved in primary metabolism. The presence of the AM fungus limits, in a salicylic acid-independent manner, the accumulation of abscissic acid observed in response to viral infection. At the time of the molecular analysis, no differences in virus concentration or symptom severity were detected between mycorrhizal and nonmycorrhizal plants. However, in a longer period, increase in virus titer and delay in the appearance of recovery were observed in mycorrhizal plants, thus indicating that the plant's reaction to TSWV infection is attenuated by mycorrhization.

KW - Abscisic Acid/analysis

KW - Biomass

KW - Cyclopentanes/analysis

KW - Down-Regulation/genetics

KW - Gene Expression Profiling

KW - Gene Expression Regulation, Plant/genetics

KW - Glomeromycota/genetics

KW - Lycopersicon esculentum/genetics

KW - Mycorrhizae/genetics

KW - Oligonucleotide Array Sequence Analysis

KW - Oxylipins/analysis

KW - Phenotype

KW - Plant Diseases/microbiology

KW - Plant Growth Regulators/analysis

KW - Plant Leaves/genetics

KW - Plant Roots/genetics

KW - Plant Shoots/genetics

KW - Salicylic Acid/analysis

KW - Signal Transduction

KW - Symbiosis

KW - Time Factors

KW - Tospovirus/physiology

KW - Transcriptome

KW - Up-Regulation/genetics

U2 - 10.1094/MPMI-05-11-0116

DO - 10.1094/MPMI-05-11-0116

M3 - Article

C2 - 21899386

VL - 24

SP - 1562

EP - 1572

JO - Molecular Plant-Microbe Interactions

JF - Molecular Plant-Microbe Interactions

SN - 0894-0282

IS - 12

ER -