Water Balance, Hormone Homeostasis, and Sugar Signaling Are All Involved in Tomato Resistance to<i>Tomato Yellow Leaf Curl Virus</i>

Sade, Dagan; Sade, Nir; Shriki, Oz; Lerner, Stephen A.; Gebremedhin, Alem; Karavani, Asaf; Brotman, Yariv; Osorio, Sonia; Fernie, Alisdair R.; Willmitzer, Lothar; Czosnek, Henryk; Moshelion, Menachem

doi:10.1104/pp.114.243402

Cited by 39 publications

(34 citation statements)

References 73 publications

(90 reference statements)

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“…The regulation among different plant hormones and their homeostasis are important factors for plant development and interactions with the environment57. IAA, CTK, GA, ABA, and ethylene have all been implicated in DADS responses.…”

Section: Discussionmentioning

confidence: 99%

Transcriptomic insights into the allelopathic effects of the garlic allelochemical diallyl disulfide on tomato roots

Cheng

Meng

2016

Sci Rep

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Garlic is an allelopathic crop that can alleviate the obstacles to continuous cropping of vegetable crops. Diallyl disulfide (DADS), one of the most important allelochemicals in garlic, promotes tomato root growth. Therefore, the global transcriptome profiles of DADS-treated tomato roots over time were investigated to reveal the potential growth-promoting mechanisms. We detected 1828, 1296 and 1190 differentially expressed genes (DEGs) in the 4, 24 and 48 h samples, respectively. Most DEGs involved in assimilatory sulfate reduction and glutathione metabolism were up-regulated after short-term (4 h) DADS treatment. In addition, increased activity of defensive enzymes and up-regulation of six peroxidase genes were observed, suggesting that DADS could induce tomato resistance. In plant-pathogen interactions, DEGs related to calcium signaling were primarily inhibited, while those encoding pathogenesis-related proteins were primarily up-regulated. Although plant hormone synthesis and signal transduction were both significantly affected by DADS, the expression trends of the genes in these two pathways were conflicting. This research provides comprehensive information concerning the changes in the tomato root transcriptome affected by DADS and may help direct further studies on DADS-responsive genes to enhance the current understanding of the mechanisms by which DADS alleviates the obstacles to continuous cropping.

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Section: Discussionmentioning

confidence: 99%

Transcriptomic insights into the allelopathic effects of the garlic allelochemical diallyl disulfide on tomato roots

Cheng

Meng

2016

Sci Rep

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“…a & b). Antagonistic crosstalk between ABA and SA has been observed upon viral infection (Sade et al ). Indeed, we found a significant negative correlation in the accumulation of ABA and SA in our entire dataset (Pearson coefficient, P < 0.01), which was not observed in any other hormone combination (Supporting Information Fig.…”

Section: Resultsmentioning

confidence: 99%

Virulence determines beneficial trade‐offs in the response of virus‐infected plants to drought via induction of salicylic acid

Aguilar

Cutrona

Toro

et al. 2017

Plant Cell & Environment

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It has been hypothesized that plants can get beneficial trade-offs from viral infections when grown under drought conditions. However, experimental support for a positive correlation between virus-induced drought tolerance and increased host fitness is scarce. We investigated whether increased virulence exhibited by the synergistic interaction involving Potato virus X (PVX) and Plum pox virus (PPV) improves tolerance to drought and host fitness in Nicotiana benthamiana and Arabidopsis thaliana. Infection by the pair PPV/PVX and by PPV expressing the virulence protein P25 of PVX conferred an enhanced drought-tolerant phenotype compared with single infections with either PPV or PVX. Decreased transpiration rates in virus-infected plants were correlated with drought tolerance in N. benthamiana but not in Arabidopsis. Metabolite and hormonal profiles of Arabidopsis plants infected with the different viruses showed a range of changes that positively correlated with a greater impact on drought tolerance. Virus infection enhanced drought tolerance in both species by increasing salicylic acid accumulation in an abscisic acid-independent manner. Viable offspring derived from Arabidopsis plants infected with PPV increased relative to non-infected plants, when exposed to drought. By contrast, the detrimental effect caused by the more virulent viruses overcame potential benefits associated with increased drought tolerance on host fitness.

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“…As shown in Fig. 2 , compared with control plants, TYLCV DNA showed high expression levels in both two tomato leaves after TYLCV infection for 7 d. Numerous studies have conducted the analyses between plants and TYLCV infection using the whiteflies as the medium, suggesting their feasibility in conducting the analysis of plant-TYLCV interaction [ 3 , 61 – 63 ].…”

Section: Discussionmentioning

confidence: 99%

Members of WRKY Group III transcription factors are important in TYLCV defense signaling pathway in tomato (Solanum lycopersicum)

Huang

et al. 2016

BMC Genomics

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BackgroundTransmitted by the whitefly Bemisia tabaci, tomato yellow leaf curly virus (TYLCV) has posed serious threats to plant growth and development. Plant innate immune systems against various threats involve WRKY Group III transcription factors (TFs). This group participates as a major component of biological processes in plants.ResultsIn this study, 6 WRKY Group III TFs (SolyWRKY41, SolyWRKY42, SolyWRKY53, SolyWRKY54, SolyWRKY80, and SolyWRKY81) were identified, and these TFs responded to TYLCV infection. Subcellular localization analysis indicated that SolyWRKY41 and SolyWRKY54 were nuclear proteins in vivo. Many elements, including W-box, were found in the promoter region of Group III TFs. Interaction network analysis revealed that Group III TFs could interact with other proteins, such as mitogen-activated protein kinase 5 (MAPK) and isochorismate synthase (ICS), to respond to biotic and abiotic stresses. Positive and negative expression patterns showed that WRKY Group III genes could also respond to TYLCV infection in tomato. The DNA content of TYLCV resistant lines after SolyWRKY41 and SolyWRKY54 were subjected to virus-induced gene silencing (VIGS) was lower than that of the control lines.ConclusionsIn the present study, 6 WRKY Group III TFs in tomato were identified to respond to TYLCV infection. Quantitative real-time–polymerase chain reaction (RT-qPCR) and VIGS analyses demonstrated that Group III genes served as positive and negative regulators in tomato–TYLCV interaction. WRKY Group III TFs could interact with other proteins by binding to cis elements existing in the promoter regions of other genes to regulate pathogen-related gene expression.Electronic supplementary materialThe online version of this article (doi:10.1186/s12864-016-3123-2) contains supplementary material, which is available to authorized users.

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Water Balance, Hormone Homeostasis, and Sugar Signaling Are All Involved in Tomato Resistance toTomato Yellow Leaf Curl Virus

Cited by 39 publications

References 73 publications

Transcriptomic insights into the allelopathic effects of the garlic allelochemical diallyl disulfide on tomato roots

Transcriptomic insights into the allelopathic effects of the garlic allelochemical diallyl disulfide on tomato roots

Virulence determines beneficial trade‐offs in the response of virus‐infected plants to drought via induction of salicylic acid

Members of WRKY Group III transcription factors are important in TYLCV defense signaling pathway in tomato (Solanum lycopersicum)

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