Polyphenolic Pattern in Apple Tree Leaves in Relation to Scab Resistance. A Preliminary Study

Picinelli, Anna; Fuente, Enrique Dapena de la; Mangas, J. J.

doi:10.1021/jf00056a057

Cited by 95 publications

(76 citation statements)

References 9 publications

(10 reference statements)

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“…2 D, E), a result that had already been reported for the latter by Picinelli et al (1995). For the first two dates, there is no significant change in the content of caffeic acid (Fig.…”

Section: Resultssupporting

confidence: 78%

“…Rubinola leaves (data not shown) contained the largest amount of this phenolic compound in both years throughout the growing season. Other researchers have already shown that resistant cultivars contain greater quantities of flavonols in leaf tissue and fruit skin than susceptible ones (Treutter and Feucht 1990b;Picinelli et al 1995).…”

Section: Resultsmentioning

confidence: 97%

“…Chlorogenic acid may act directly as a defense compound. The involvement of chlorogenic acid in the defense mechanism of apple has been studied by Picinelli et al (1995). They proved that the leaves of apples resistant to scab have a higher concentration of chlorogenic acid than susceptible genotypes.…”

Section: Resultsmentioning

confidence: 99%

“…Previous investigations have shown that high N-nutrition reduced flavonoid accumulation in leaves. This situation is positively correlated to increased susceptibility to scab (Ru¨hmann et al 2002;Leser and Treutter 2005;Strissel et al 2005). The content of phenolics in a plant may be influenced by cultivation conditions (environmental conditions and cultivation techniques).…”

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confidence: 99%

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Seasonal changes in phenolic compounds in the leaves of scab-resistant and susceptible apple cultivars

Mikulič-Petkovšek¹,

Štampar²,

Veberič³

2009

Can. J. Plant Sci.

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in phenolic compounds in the leaves of scab-resistant and susceptible apple cultivars. Can. J. Plant Sci. 89: 745Á753. Leaf samples were collected from apple varieties susceptible and resistant to apple scab [Venturia inaequalis (Cke.) Wint.] from June to September for 2 yr between 2005 and 2006. These were analyzed for phenolic compounds, using high-performance liquid chromatography (HPLC). In the apple leaves, the following hydroxycinnamic acids were detected: chlorogenic, caffeic and p-coumaric acids; the following dihydrochalcone: phloridzin, and the following flavonoids: epicatechin, catechin, rutin and quercitrin. The total of phenolic compounds in apple leaves was determined spectrophotometrically, using the FolinCiocalteu method. During the growing season, the content of phenolic compounds changed and was related to the physiological stage of the tissue and cultivar used. Each phenolic compound had its own curve of seasonal changes in concentration. In 2005 there was no significant change in total phenols during the growing season. In 2006, their content changed significantly during the growing season; statistically the highest content of total phenols was found in the leaves in August. Total phenols as well as single phenolics were statistically higher in resistant than in susceptible apple varieties for both years.

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“…2 D, E), a result that had already been reported for the latter by Picinelli et al (1995). For the first two dates, there is no significant change in the content of caffeic acid (Fig.…”

Section: Resultssupporting

confidence: 78%

Section: Resultsmentioning

confidence: 97%

Section: Resultsmentioning

confidence: 99%

mentioning

confidence: 99%

See 2 more Smart Citations

Seasonal changes in phenolic compounds in the leaves of scab-resistant and susceptible apple cultivars

Mikulič-Petkovšek¹,

Štampar²,

Veberič³

2009

Can. J. Plant Sci.

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“…It acts as feeding deterrent against adult Japanese beetles (Popillia japonica) (Fulcher et al 1998), and it is reportedly involved in resistance to apple pathogens (Leser and Treutter 2005). Picinelli et al (1995) described the inhibitory ability of phloridzin towards apple scab fungus (Venturia aequalis) and observed an increase in phloridzin after fungus infection, suggesting a possible induced resistance response. Petkovsek et al (2008) further confirmed this observation, reporting a 1.6 to 3.4-fold increase in phloridzin in apple scab infected leaves.…”

Section: Introductionmentioning

confidence: 99%

Within-plant distribution of induced resistance in apple seedlings: rapid acropetal and delayed basipetal responses

Gutbrodt

Mody

Wittwer

et al. 2011

Planta

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Induction of plant resistance by herbivory is a complex process, which follows a temporal dynamic and varies spatially at the within-plant scale. This study aimed at improving the understanding of the induction process in terms of time scale and within-plant allocation, using apple tree seedlings (Malus 9 domestica) as plant model. Feeding preferences of a leaf-chewing insect (Spodoptera littoralis) for previously damaged and undamaged plants were assessed for six different time intervals with respect to the herbivore damage treatment and for three leaf positions. In addition, main secondary defense compounds were quantified and linked to herbivore feeding preferences. Significant herbivore preference for undamaged plants (induced resistance) was first observed 3 days after herbivore damage in the most apical leaf. Responses were delayed in the other leaf positions, and induced resistance decreased within 10 days after herbivore damage simultaneously in all tested leaf positions. Chemical analysis revealed higher concentrations of the flavonoid phloridzin in damaged plants as compared to undamaged plants. This indicates that herbivore preference for undamaged apple plants may be linked to phloridzin, which is the main secondary metabolite of apple leaves. The observed time course and distribution of resistance responses within plants contribute to the understanding of induction processes and patterns, and support the optimal defense theory stating young tissue to be prioritized. Moreover, induced resistance responses occurred also basipetally in leaves below the damage site, which suggests that signaling pathways involved in resistance responses are not unidirectional.

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The influence of organic/integrated production on the content of phenolic compounds in apple leaves and fruits in four different varieties over a 2‐year period

et al. 2010

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Polyphenolic Pattern in Apple Tree Leaves in Relation to Scab Resistance. A Preliminary Study

Cited by 95 publications

References 9 publications

Seasonal changes in phenolic compounds in the leaves of scab-resistant and susceptible apple cultivars

Seasonal changes in phenolic compounds in the leaves of scab-resistant and susceptible apple cultivars

Within-plant distribution of induced resistance in apple seedlings: rapid acropetal and delayed basipetal responses

The influence of organic/integrated production on the content of phenolic compounds in apple leaves and fruits in four different varieties over a 2‐year period

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