Physiological and Biochemical Aspects of Frost Resistance in Оlea europaea L.

Gubanova, T. B.; Paliy, А. Е.

doi:10.1134/s1021443720030103

Cited by 3 publications

(4 citation statements)

References 18 publications

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“…The same authors concluded that since high oleuropein concentration is probably closely related to higher antioxidant capacity, by lowering the level of cellular reactive oxygen species (ROS) during cold stress, this compound may offer protection against oxidative damage induced by freezing. Gubanova and Paliy [ 26 ] reported that the total content of phenolic compounds in leaves of frost-resistant olive cultivars remained unchanged under the influence of temperatures close to absolute minimum value of −15 °C. A similar response observed in the case of the majority of the most abundant phenols and antioxidant activity in Istarska bjelica leaves confirmed the practical knowledge about its high tolerance to low temperatures [ 21 , 23 ].…”

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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“…Changes in FT of different olive cultivars were consistent with leaves tissue dehydration (relative water content -RWC-), accumulation of cryoprotectants (namely soluble carbohydrates, proline, phenolic compounds) and scavenging capacity during hardening [ 96 , 103 , 131 , 132 ]. Accumulation of unknown polypeptides (66 kDa and 43 kDa in leaves and 70 kDa, 43 kDa and 16 kDa in bark) was also detected during the CA stage [ 130 ].…”

Section: Responses Adaptions and Recovery At Low Temperaturementioning

confidence: 97%

“…Changes in Fv/Fm ratio has been observed under freezing temperatures. Tolerant genotypes were reported to maintain a significantly higher Fv/Fm index, while a decline was observed in non-tolerant CVs, indicating malfunction or damage to PSII reaction centers [ 91 , 92 , 93 , 94 , 95 , 96 ]. Reduction of photosynthetic activity accompanied by soluble sugar accumulation as well as hydrolysis of starch in chloroplasts, probably caused by disturbances in carbohydrate metabolism or by an inhibition of sugar utilization, were found in the leaves of several cultivars [ 45 , 68 , 74 , 97 , 98 ].…”

Section: Low Temperature Stress In Olive Treementioning

confidence: 99%

“…In addition, under cold stress occur accumulation of secondary metabolites (e.g., anthocyanin and phenolic compounds) [ 106 , 107 , 108 ], and changes in hormones biosynthesis and distribution [ 109 ]. Under LTs some olive cultivars showed changes in total phenolic compounds, oleuropein, and proline content [ 96 , 103 , 104 , 107 ].…”

Section: Low Temperature Stress In Olive Treementioning

confidence: 99%

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Cold Stress, Freezing Adaptation, Varietal Susceptibility of Olea europaea L.: A Review

Petruccelli

Bartolini

Ganino

et al. 2022

Plants

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Olive (Olea europaea L.) is an evergreen xerophytic tree characterizing vegetative landscape and historical-cultural identity of the Mediterranean Basin. More than 2600 cultivars constitute the rich genetic patrimony of the species cultivated in approximately 60 countries. As a subtropical species, the olive tree is quite sensitive to low temperatures, and air temperature is the most critical environmental factor limiting olive tree growth and production. In this present review, we explored the detrimental effects caused of low temperatures on olive cultivars, and analyzed the most frequently experimental procedures used to evaluate cold stress. Then, current findings freezing stress physiology and gene are summarized in olive tree, with an emphasis on adaptive mechanisms for cold tolerance. This review might clear the way for new research on adaptive mechanisms for cold acclimation and for improvement of olive growing management.

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Water regime and potential drought resistance of Ficus carica L.

Pilkevich¹

2020

Sbornik naučnyh trudov

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The research was conducted on the basis of collection plantings of the Nikitsky Botanical Gardens - National Scientific Center (Southern Coast of the Crimea) during the summer seasons 2019-2020. Indicators of a number of parameters of the water regime of four Ficus сarica cultivars of different origin were determined, and characteristic features of each genotype were revealed under the influence of arid factors. From May to August, the indicators of leaf tissue water content of the studied genotypes decrease by an average of 8-10 %. During the period of mass fruit ripening, the loss of 10-15 % of moisture by the leaves is a sublethal water deficit for the studied objects, except for Sary Stambulsky cultivar. In the absence of fruit load, the level of permissible sublethal moisture loss increases to 15-20 %, and in 'Sary Stambulsky' can reach 30 %. As a result of a comparative assessment of the complex of physiological indicators, the genotypes 'Sary Stambulsky' and 'Sabrutsia Rozovaya' are potentially adaptive and resistant to hydrothermal stress were identified. The leaves of these cultivars showed a high ability to retain moisture in combination with the ability to perform the most complete tissue repair after critical dehydration. During periods of increased exposure to arid factors, the loss of moisture by leaves in the first hours of wilting in these cultivars did not exceed 20 %. The minimum level of water-retaining forces, as well as in most cases, unsatisfactory turgidity was shown by plants of the Muason (Krymsky Chyorniy) cultivar. Depending on the weather conditions of the summer months, the degree of dehydration of leaf tissues of this genotype after 2 hours of wilting varied in the range of 8-25 %, which indicated a low stability of the water regime. The genotype ‘Opylitel Nikitsky’ was characterized by an average level of drought tolerance.

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Physiological and Biochemical Aspects of Frost Resistance in Оlea europaea L.

Cited by 3 publications

References 18 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

Cold Stress, Freezing Adaptation, Varietal Susceptibility of Olea europaea L.: A Review

Water regime and potential drought resistance of Ficus carica L.

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