Frost tolerance of 24 olive cultivars and subsequent vegetative re-sprouting as indication of recovery ability

Lodolini, E.M.; Alfei, B.; Santinelli, A.; Cioccolanti, Tonino; Polverigiani, Serena; Neri, Davide

doi:10.1016/j.scienta.2016.08.025

Cited by 25 publications

(28 citation statements)

References 17 publications

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“…It has also been estimated that, in Mediterranean area, the risk of freezing for olives occurs at irregular intervals between 10 and 40 years [ 13 , 32 , 33 ]. In more recent years, cold damage and production failure occurred in 2016 and 2018 [ 34 , 35 ]. In a context of climate change, simulation models have been revealing a steady increase in the global average temperature, but this uptick is frequently accompanied by irregular and extreme cold events, even if of short duration (from 24 h to a few days) [ 36 , 37 ].…”

Section: Introductionmentioning

confidence: 99%

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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Section: Introductionmentioning

confidence: 99%

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

Petruccelli

Bartolini

Ganino

et al. 2022

Plants

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“…Olive trees are well adapted to warm Mediterranean climates ( Melgar et al., 2009 ; Ponti et al., 2014 ; Mousavi et al., 2019 ; Mousavi et al., 2022 ) but are susceptible to low temperatures, especially to out-of-season ones and can be damaged irreversibly. Previous studies have shown that low temperatures can result in a range of morphological, physiological, and biochemical changes in olive trees, including changes in the concentration of plant hormones, photosynthesis, and antioxidant defense systems ( Gómez-del-Campo and Barranco, 2005 ; Arias et al., 2015 and Lodolini et al., 2016 ; Arias et al., 2017 ; Mougiou et al., 2020 ). To mitigate the effects of cold stress on olive trees, several strategies have been developed and studied.…”

Section: Introductionmentioning

confidence: 99%

“…During winter dormancy, however, the same temperatures could have less harmful effects ( Turchetti Iturrieta et al., 2014 ). Shoot tip burn and defoliation, bark split on branches or trunk, limb dieback, and bark and wood discoloration are the most common symptoms of frost damage in olive trees ( Denney et al., 1993 ; Ruiz et al., 2006 ; Sanzani et al., 2012 ; Lodolini et al., 2016 ; Karamatlou et al., 2019 ; Mougiou et al., 2020 ; Rodrigues et al., 2022 ).…”

Section: Introductionmentioning

confidence: 99%

Cold stress resilience of Iranian olive genetic resources: evidence from autochthonous genotypes diversity

Karamatlou,

Navabpour,

Nezhad

et al. 2023

Front. Plant Sci.

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Olive (Olea europaea L.) is one of the most cultivated tree species in Iran. This plant is characterized by its tolerance to drought, salt, and heat stresses while being vulnerable to frost. During the last decade, periods of frost have occurred several times in Golestan Province, in the northeast of Iran, which caused severe damage to olive groves. This study aimed to evaluate and individuate autochthonous Iranian olive varieties with regard to frost tolerance and good agronomic performance. For this purpose, 218 frost-tolerant olive trees were selected from 150,000 adult olive trees (15–25 years old), following the last harsh autumn of 2016. The selected trees were reassessed at different intervals, i.e., 1, 4, and 7 months after the cold stress in field conditions. Using 19 morpho-agronomic traits, 45 individual trees with relatively stable frost-tolerance were reevaluated and selected for this research. Ten highly discriminating microsatellite markers were used for the genetic profiling of the 45 selected olive trees, and, ultimately, five genotypes with the highest tolerance among 45 selected ones were placed in a cold room at freezing temperatures for image analyses of cold damage. The results of morpho-agronomic analyses evidenced no bark splitting or symptoms of leaf drop in the 45 cold-tolerant olives (CTOs). The oil content of the cold-tolerant trees comprised almost 40% of the fruit dry weight, highlighting the potential of these varieties for oil production. Moreover, through molecular characterization, 36 unique molecular profiles were individuated among the 45 analyzed CTOs that were genetically more similar to the Mediterranean olive cultivars than the Iranian ones. The present study demonstrated the high potential of local olive varieties, which would be promising and more suitable than commercial olive varieties, with regard to the establishment of olive groves under cold climate conditions. This could be a valuable genetic resource for future breeding activities to face climate changes.

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“…The other two strategies are stress avoidance and stress tolerance. Under low temperatures, plants, including fruit-tree species, with a stress avoidance strategy aim at delaying the frost injuries in sensitive tissues by performing processes including supercooling, which prevent ice crystal formation in their cells by decreasing the cell water content, allowing it to reach a lower freezing point [1][2][3][4][5]. Following a cold-stress tolerance strategy implies changes at physiological, biochemical and morphological levels which lead to resist the action of stress, these metabolic changes include mechanisms to avoid plasma membrane degradation and preservation of its lipid composition, synthesis of osmoprotectants like soluble sugars, sugar alcohols and cryoprotective proteins to maintain an osmotic adjustment, and increase in antioxidative-enzyme activity to control Horticulturae 2021, 7, 527 2 of 16 the cell homeostasis.…”

Section: Introductionmentioning

confidence: 99%

Gene Expression Analysis in Cold Stress Conditions Reveals BBX20 and CLO as Potential Biomarkers for Cold Tolerance in Almond

et al. 2021

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Late spring frosts can become one of the limiting factors for the expansion of cultivation area towards a harsher climate for the almond [Prunus amygdalus Batsch syn P. dulcis (Mill.) D.A. Webb] crop as spring frost can damage up to 90% of the harvest. In order to identify key genes favoring cold tolerance in almonds, branches from three late-blooming genotypes: ‘Guara’, ‘Soleta’ and ‘Belona’ were exposed at −4 °C during 24 h in a constant climate chamber. Phenotype analysis showed that ‘Guara’ and ‘Soleta’ had a greater acclimation capacity to cold than ‘Belona’. The qRT-PCR BioMark System technology was used to monitor the relative expression of 30 candidate genes with a potential relation to cold response, which are either involved in the ICE-CBF-COR pathway or the independent CBF pathway, and also genes not yet characterized or with unknown function in almond genome. Differences in the gene expression profiles were found among the three studied genotypes and the three time-points of cold exposure (0, 2 and 24 h). BBX20 and CLO genes behaved as differentiator genes between tolerant and susceptible genotypes in cold stress response in almond pistils. In addition, the differences of expression among the tolerant genotypes suggested the intervention of different mechanisms responding to cold stress in almonds.

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Frost tolerance of 24 olive cultivars and subsequent vegetative re-sprouting as indication of recovery ability

Cited by 25 publications

References 17 publications

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

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

Cold stress resilience of Iranian olive genetic resources: evidence from autochthonous genotypes diversity

Gene Expression Analysis in Cold Stress Conditions Reveals BBX20 and CLO as Potential Biomarkers for Cold Tolerance in Almond

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