The physiological and biochemical responses to freezing stress of olive plants treated with salicylic acid

Hashempour, Abuzar; Ghasemnezhad, Mahmood; Ghazvini, Reza Fotouhi; Sohani, Mohammad Mehdi

doi:10.1134/s1021443714040098

Cited by 28 publications

(12 citation statements)

References 25 publications

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“…Enhanced AA as a facilitator of frost tolerance was previously described in other plants: for example, elevated levels of ROS-scavenging activities in pine trees were found to be associated with increased freezing tolerance (Tao et al ., 1998). Another study suggested that treating olive plants with salicylic acid (SA) enhanced their freezing tolerance by increasing antioxidant enzymatic activities and total phenolic content (Hashempour et al ., 2014).…”

Section: Discussionmentioning

confidence: 99%

Comparative study of leaf antioxidant activity as a possible mechanism for frost tolerance in ‘Hass’ and ‘Ettinger’ avocado cultivars

et al. 2019

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A major drawback of avocado (Persea americanaMill.) is susceptibility to frosts, which reduces yields and limits its geographic distribution and market growth. Whereas the frost-susceptible cultivar ‘Hass’ leads the global avocado market, cv. ‘Ettinger’, although commercially less important, is considered frost-tolerant. The mechanism behind the greater frost tolerance of ‘Ettinger’ has not yet been elucidated; therefore, the aim of the current study was to evaluate the differences between the frost responses of the two cultivars. The results showed that detached ‘Ettinger’ branches had greater tolerance than ‘Hass’ to controlled frost stress. Tissue browning caused by methyl viologen oxidative cell damage, superoxide accumulation in leaf discs following wounding and browning of cut surfaces in branches were much lower in ‘Ettinger’ than in ‘Hass’, suggesting greater antioxidant activity (AA) in the former. In leaf extracts, AA was significantly higher in ‘Ettinger’ than in ‘Hass’, but osmolarity was similar in the two cultivars. Total phenolics content was significantly higher in ‘Ettinger’ but addition of a protein mask did not significantly reduce AA in either cultivar. Interestingly, following the freezing treatment, AA increased in ‘Ettinger’ and remained almost unchanged in ‘Hass’, while osmolarity was unaffected in either cultivar. These results suggest that the greater frost-tolerance of ‘Ettinger’ than ‘Hass’ is due largely to its greater AA, which springs mainly from a non-enzymatic source, i.e. accumulation of phenolic compounds. Based on the current study, future applications may be developed to minimize frost damage in avocado orchards.

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Section: Discussionmentioning

confidence: 99%

Comparative study of leaf antioxidant activity as a possible mechanism for frost tolerance in ‘Hass’ and ‘Ettinger’ avocado cultivars

et al. 2019

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“…However, the precise mechanisms by which SA induces plant tolerance against abiotic stresses remain unknown (Khan et al, 2015;Rivas-San Vicente and Plasencia, 2011). As far as we know, SA application to improve stress tolerance in olive trees was only described under freezing (Hashempour et al, 2014) and salinity (Aliniaeifard et al, 2016) conditions, where suitable concentrations of SA revealed to be effective. In sum, the influence of KL (Brillante et al, 2016;Nanos, 2015;Shellie and Glenn, 2008) and SA (Fayez and Bazaid, 2014;Kang et al, 2012;Nazar et al, 2015;Wang et al, 2014) on stress mitigation is not consensual, since it depends on several factors that act in isolation or in combination, including genotypes, growth stage, concentration, administration mode and environmental conditions.…”

Section: Introductionmentioning

confidence: 99%

Kaolin and salicylic acid alleviate summer stress in rainfed olive orchards by modulation of distinct physiological and biochemical responses

Brito

Dinis

Luzio

et al. 2019

Scientia Horticulturae

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In a changing world, the search for new agronomic practices that help crops to maintain and/or increase yields and quality is a continuous challenge. We aim to evaluate kaolin (KL) and salicylic acid (SA) effectiveness as summer stress alleviating agents through physiological, biochemical and immunohistochemical analysis. Olive trees (Olea europaea L. cv. Cobrançosa) grown under rainfed conditions were sprayed with 5% KL and 100 μM SA, at the beginning of summer, during two consecutive years. KL enhanced relative water content (RWC), stomatal conductance (g s) net photosynthesis (A) and leaf indole-3-acetic acid (IAA) signal, and decreased leaf sclerophylly, secondary metabolites and non-structural carbohydrates accumulation and abscisic acid (ABA).The trees treated with SA showed changes on IAA and ABA dynamics, and an enhancement in RWC, g s , A, soluble proteins, and leaf P and Mg concentrations during the summer. Notably, KL and SA also allowed a faster restauration of the physiological functions during stress relief. In sum, KL and SA foliar sprays alleviated the negative effects induced by summer stress in olive trees performance, by modulation of distinct physiological and biochemical responses.

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“…Previous research has shown that spraying SA decreases lipid peroxidation and H 2 O 2 levels while also protecting cell membranes, devices, and photosynthetic pigments by improving antioxidant capacity, including carotenoids. SA regulates plants’ physiological and biochemical properties under abiotic stresses and improves their resistance to diseases [ 16 ].…”

Section: Introductionmentioning

confidence: 99%

Salicylic Acid Stimulates Defense Systems in Allium hirtifolium Grown under Water Deficit Stress

et al. 2022

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Nowadays, the use of the growth regulator salicylic acid for improving a plant’s resistance to environmental stresses such as drought is increasing. The present study investigated the effect of salicylic acid on the physiological traits, antioxidant enzymes, yield, and quality of Allium hirtifolium (shallots) under drought conditions for three years (2016–2017, 2017–2018, and 2018–2019). The experiment was conducted as a split-plot based on a randomized complete block design with four repeats. Irrigation as the main factor in four levels of 100% (full irrigation), 75% and 50% of the plant water requirements with non-irrigation (dryland), and salicylic acid as the sub-factor in four levels of 0, 0.75, and 1 mmol, were the studied factors in this research. The combined analysis of three-year data showed that drought reduced leaf relative water content (RWC), membrane stability index (MSI), chlorophyll content, onion yield, and increased activity of antioxidant enzymes, proline content, tang, and allicin of shallots. Shallot spraying with salicylic acid improved leaf RWC, MSI, chlorophyll content, and onion yield. The highest yield of onion (1427 gr m−2) belonged to full irrigation and foliar application of 1 mmol salicylic acid. The lowest yield (419.8 gr m−2) belonged to plats with non-irrigation and non-application of salicylic acid. By improving the effective physiological traits in resistance to water deficit, salicylic acid adjusted the effects of water deficit on the yield of shallots. Foliar application of 1 mmol salicylic acid in dryland and irrigation of 50% of the plant water requirement increased onion yield by 15.12% and 29.39%, respectively, compared to the control treatment without salicylic acid.

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The physiological and biochemical responses to freezing stress of olive plants treated with salicylic acid

Cited by 28 publications

References 25 publications

Comparative study of leaf antioxidant activity as a possible mechanism for frost tolerance in ‘Hass’ and ‘Ettinger’ avocado cultivars

Comparative study of leaf antioxidant activity as a possible mechanism for frost tolerance in ‘Hass’ and ‘Ettinger’ avocado cultivars

Kaolin and salicylic acid alleviate summer stress in rainfed olive orchards by modulation of distinct physiological and biochemical responses

Salicylic Acid Stimulates Defense Systems in Allium hirtifolium Grown under Water Deficit Stress

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