Manganese soil and foliar fertilization of olive plantlets: the effect on leaf mineral and phenolic content and root mycorrhizal colonization

Pasković, Igor; Ćustić, Mirjana Herak; Pećina, Marija; Bronić, Josip; Ban, Dean; Radić, Tomislav; Poščić, Filip; Špika, Maja Jukić; Soldo, Barbara; Palčić, Igor

doi:10.1002/jsfa.9196

Cited by 13 publications

(10 citation statements)

References 39 publications

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“…Different leaf nutrient status was previously recorded for various olive cultivars grown in the same environment [ 11 ], which was probably linked to the differences in nutrient uptake and translocation between olive cultivars [ 16 ]. Furthermore, variation in OL nutrient status, depending on the sampling time, may have a major impact on OL phenolics [ 17 , 18 ], since nutrient availability is essential for providing co-factors for many enzymes of the phenolic compounds biosynthesis pathways [ 9 ].…”

Section: Discussionmentioning

confidence: 99%

Temporal Variation of Phenolic and Mineral Composition in Olive Leaves Is Cultivar Dependent

Pasković

Lukić

Žurga

et al. 2020

Plants

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In order to investigate the potential of various olive cultivars and leaf sampling times for phytochemical farming practice in Croatia, phenolic and mineral composition was determined in olive leaves of four Croatian cultivars and Italian cultivar Leccino collected at three occasions, in October 2017, January 2018, and March 2018. Istarska bjelica turned out to have the largest phytochemical potential among the investigated cultivars due to steady high oleuropein concentrations found in its leaves. The concentration of main phenolic components in Istarska bjelica leaves changed only slightly during the sampling period, suggesting the possibility of its higher capability for low air temperatures stress resistance and different metabolic response compared to the other studied cultivars. Low air temperatures increased the oleuropein level and antioxidant activity in leaves of Leccino, Oblica, Levantinka, and Drobnica cultivars, which may be of crucial phytochemical farming interest. Each of the investigated olive cultivars was characterized by a specific leaf mineral nutrient composition, which could have had a specific role in their interplay with phenols.

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Section: Discussionmentioning

confidence: 99%

Temporal Variation of Phenolic and Mineral Composition in Olive Leaves Is Cultivar Dependent

Pasković

Lukić

Žurga

et al. 2020

Plants

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“…According to Farzadfar et al [ 24 ], the levels of individual biophenolics in feverfew plants were highly dependent on Mn supply, and the increment in their concentration was proportional to the amount of Mn applied. Additionally, in our previous study [ 25 ], foliar Mn application caused a significant increase in levels of the most prominent olive phenolic compound, oleuropein. Whether that implies a certain Mn intervention in the putative secoiridoid pathway, or its role in some other unexplained chain of metabolic events leading to the latter effect, remains unknown to date.…”

Section: Introductionmentioning

confidence: 94%

“…Whether that implies a certain Mn intervention in the putative secoiridoid pathway, or its role in some other unexplained chain of metabolic events leading to the latter effect, remains unknown to date. In addition, the data on the resulting variation of other biophenolic compounds in olive tissues are still scarce [ 16 , 25 , 26 ]. Seeing the importance of this micronutrient in the synthesis of biophenols, further investigation of the effects of Mn on the biophenolic content in olive leaves is needed.…”

Section: Introductionmentioning

confidence: 99%

Biophenolic Profile Modulations in Olive Tissues as Affected by Manganese Nutrition

Vidović

Pasković

Lukić

et al. 2021

Plants

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Manganese (Mn) is an essential element that intervenes in several plant metabolic processes. The olive tree, and its fruits and leaves, are known as a source of nutraceuticals since they are rich in biophenols. However, there is still a serious lack of data about biophenolic distribution in olive stems and roots under Mn fertilisation. In this context, our study aimed to examine the effects of Mn fertilisation on the biophenolic profile in the leaves, stems, and roots of the ‘Istarska bjelica’ olive cultivar. The experiment was set up in a greenhouse, during a period of five months, as a random block design consisting of three treatments with varying Mn concentrations in full-strength Hoagland’s nutrient solution (0.2 µM Mn, 12 µM Mn, and 24 µM Mn). The obtained results indicate that the amount of Mn in the examined olive plant tissues was significantly higher under 12 µM Mn and 24 µM Mn treatments compared to that of the 0.2 µM Mn treatment. While the concentration of biophenols varied in roots depending on the compound in question, a strong positive impact of the increased Mn concentration in nutrient solution (12 µM Mn and 24 µM Mn) on the concentrations of the main biophenolic compounds was observed in stems. The concentration of oleuropein in leaves almost doubled at 24 µM Mn, with the highest Mn concentration, as compared to the 0.2 µM Mn treatment. The obtained results led to the conclusion that the supply of Mn could enhance the concentration of some biologically active compounds in olives grown hydroponically, implying a critical need for further investigation of Mn fertilisation practices in the conventional olive farming system.

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“…Soil chemical properties were determined according to previously defined methods (Pasković et al, 2019).…”

Section: Soil Analysismentioning

confidence: 99%

Processing tomato response to arbuscular mycorrhizal fungi application under conventional production practice

Grozić¹,

Pasković²,

Radić³

et al. 2021

JCEA

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The potential effect of pre-inoculation of processing tomato (Solanum lycopersicum L.) plants with arbuscular mycorrhizal fungi (AMF) on yield and fruit properties was investigated in conventional production. Tomato seeds were sown in seedling trays filled with a substrate non-inoculated (AMF-) or inoculated (AMF+) by selected mycorrhizal strains. Seedlings were transplanted in Terra rossa soil and grown in conditions with mineral fertilization and irrigation.Tomato fruits were sampled at harvest. Tomato plants under both treatments had high levels of mycorrhizal colonization, due to applied inoculum (AMF+) or indigenous (AMF-) inoculum present in the soil. Applied AMF+ treatment increased P and decreased K content in tomato fruits. Content of trace elements such as As and V significantly increased, while Pb content significantly decreased in the fruits of AMF+ when compared to the AMF-treatment. No significant effect of AMF+ treatment was observed on yield, fruit quality (soluble solids, pH, total acidity, fruit firmness), lycopene and antioxidant activity of tomato fruits. The overall results suggest that processing tomato is highly susceptible to the indigenous AMF, while seedlings inoculation with selected AMF improves only total phenolic and P fruit content. This means that AMF have a potential application in commercial processing tomato production, however a targeted adaptation of management decissions is required for more extensive results.

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Manganese soil and foliar fertilization of olive plantlets: the effect on leaf mineral and phenolic content and root mycorrhizal colonization

Cited by 13 publications

References 39 publications

Temporal Variation of Phenolic and Mineral Composition in Olive Leaves Is Cultivar Dependent

Temporal Variation of Phenolic and Mineral Composition in Olive Leaves Is Cultivar Dependent

Biophenolic Profile Modulations in Olive Tissues as Affected by Manganese Nutrition

Processing tomato response to arbuscular mycorrhizal fungi application under conventional production practice

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