Primed plants do not forget

Pastor, Victoria; Luna, Estrella; Mauch‐Mani, Brigitte; Ton, Jurriaan; Flors, Vı́ctor

doi:10.1016/j.envexpbot.2012.02.013

Cited by 315 publications

(247 citation statements)

References 140 publications

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“…Recent reviews have attributed the enhanced defense to the accumulation of dormant mitogen-activated protein kinases, chromatin modifications, modifications of primary metabolism, accumulation of inactive defense metabolite conjugates, and activation of a second reactive oxygen species burst (Conrath, 2011;Pastor et al, 2013). The direct effect of BVOCs as defense signals in plant-insect interactions has already been shown in different studies (Gatehouse, 2002;Arimura et al, 2005;Kessler et al, 2006).…”

Section: Nonprimed Seedlings Exhibit a Stronger Up-regulation Of Defementioning

confidence: 97%

Priming of Wheat with the Green Leaf Volatile Z-3-Hexenyl Acetate Enhances Defense against Fusarium graminearum But Boosts Deoxynivalenol Production

Ameye

Audenaert²,

Zutter³

et al. 2015

Plant Physiol.

116

115

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Priming refers to a mechanism whereby plants are sensitized to respond faster and/or more strongly to future pathogen attack. Here, we demonstrate that preexposure to the green leaf volatile Z-3-hexenyl acetate (Z-3-HAC) primed wheat (Triticum aestivum) for enhanced defense against subsequent infection with the hemibiotrophic fungus Fusarium graminearum. Bioassays showed that, after priming with Z-3-HAC, wheat ears accumulated up to 40% fewer necrotic spikelets. Furthermore, leaves of seedlings showed significantly smaller necrotic lesions compared with nonprimed plants, coinciding with strongly reduced fungal growth in planta. Additionally, we found that F. graminearum produced more deoxynivalenol, a mycotoxin, in the primed treatment. Expression analysis of salicylic acid (SA) and jasmonic acid (JA) biosynthesis genes and exogenous methyl salicylate and methyl jasmonate applications showed that plant defense against F. graminearum is sequentially regulated by SA and JA during the early and later stages of infection, respectively. Interestingly, analysis of the effect of Z-3-HAC pretreatment on SA-and JA-responsive gene expression in hormone-treated and pathogen-inoculated seedlings revealed that Z-3-HAC boosts JA-dependent defenses during the necrotrophic infection stage of F. graminearum but suppresses SA-regulated defense during its biotrophic phase. Together, these findings highlight the importance of temporally separated hormone changes in molding plant health and disease and support a scenario whereby the green leaf volatile Z-3-HAC protects wheat against Fusarium head blight by priming for enhanced JA-dependent defenses during the necrotrophic stages of infection.

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Section: Nonprimed Seedlings Exhibit a Stronger Up-regulation Of Defementioning

confidence: 97%

Priming of Wheat with the Green Leaf Volatile Z-3-Hexenyl Acetate Enhances Defense against Fusarium graminearum But Boosts Deoxynivalenol Production

Ameye

Audenaert²,

Zutter³

et al. 2015

Plant Physiol.

116

115

View full text Add to dashboard Cite

show abstract

“…The plant immune system involves hormones such as salicylic acid (SA) and jasmonic acid. Plants can sensitize their immune system to respond to specific alarm signals in hostile conditions ( Conrath, 2011;Pastor et al, 2013). Luna et al (2014) reported that certain chemicals can enhance the plant immune system including b-aminobutyric acid (BABA), which elicits broad-spectrum disease protection.…”

Section: Introductionmentioning

confidence: 99%

Distribution of organic metabolites after Fusarium wilt incidence in tomato (Solanum lycopersicum L.)

Alsamir¹,

Mahmood²,

Ahmad³

et al. 2017

Aust J Crop Sci

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Tomato is an important vegetable crop worldwide and Fusarium wilt is a significant disease of tomato in many countries. One hundred and fifty three diverse tomato genotypes collected from local and exotic sources were screened for resistance to F. solani in the greenhouse. Significant variation in genotype response to inoculation was observed. The organic metabolite profiles of resistant and susceptible genotypes were assessed to determine the basis of resistance. Significant genetic variation was observed for ABA, malic acid, citric acid, fructose, glucose, sucrose, L-proline and myo-inositol. The disease treatment produced significant changes in fructose, glucose, proline and sucrose and significant genotype-by-treatment interaction was observed for ABA, citric acid, fructose, glucose, malic acid and sucrose, indicating that genetic improvement of these traits is feasible. Disease incidence was strongly associated with citric acid (R 2 = 0.84), sucrose (R 2 = 0.72) and L-proline (R 2 = 0.76). Principal component analysis confirmed that citric acid and L-proline were important in determining plant disease response. Genetic variation for Fusarium wilt resistance can be used to develop new tomato cultivars with improved disease resistance.

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“…Priming provides an effective enhanced basal resistance, which is controlled by a multitude of genes; therefore, priming of basal resistance is effective against a broad range of biological threats (Ahmad et al, 2010;Conrath et al, 2015). Furthermore, many groups have studied the durability of priming and concluded that it can be maintained long after the initial stimulus (Pastor et al, 2013;Luna et al, 2014a) and can also be transmitted to following generations Rasmann et al, 2012;Slaughter et al, 2012). This long-lasting maintenance of the primed state demonstrates a form of plant immunological memory that could provide a potential source for future IPM strategies.…”

Section: Introductionmentioning

confidence: 99%

Using Green <I>Vaccination</I> to Brighten the Agronomic Future

Luna¹

2016

Outlook Pest Man

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Primed plants do not forget

Cited by 315 publications

References 140 publications

Priming of Wheat with the Green Leaf Volatile Z-3-Hexenyl Acetate Enhances Defense against Fusarium graminearum But Boosts Deoxynivalenol Production

Priming of Wheat with the Green Leaf Volatile Z-3-Hexenyl Acetate Enhances Defense against Fusarium graminearum But Boosts Deoxynivalenol Production

Distribution of organic metabolites after Fusarium wilt incidence in tomato (Solanum lycopersicum L.)

Using Green <I>Vaccination</I> to Brighten the Agronomic Future

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