Physiological and biochemical responses of some olive cultivars (Olea europaea L.) to water stress

Ahmadipour, S; Arji, I; Ebadi, A.; Abdossi, Vahid

doi:10.14715/cmb/2017.64.15.4

Cited by 15 publications

(14 citation statements)

References 72 publications

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“…The enhancement in antioxidative activity and metabolites was reported also in another research on olive trees under water deficit [68]. Under severe stress conditions, an imbalance between ROS synthesis and the antioxidant defense system may occur [7] thus causing an accumulation of ROS, lipid peroxidation, and cell damage, with repercussions on plant growth and development, and finally yield performance [69]. For adjusting the balance by detoxification of excess ROS, the enhancement in activities of antioxidant enzymes (POD and CAT) is required [33,70].…”

Section: Oxidative Enzymes and Markerssupporting

confidence: 53%

Effect of three water-regimes on morpho-physiological, biochemical and yield responses of local and foreign olive cultivars under field conditions

et al. 2022

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Background Drought stress is among the most serious threats jeopardizing the economic yield of crop plants in Iran. In particular, in response to withholding irrigation, the reduction in performance and quality of a precious plant such as the olive tree is remarkable. Therefore, the selection of cultivars that are resistant or tolerant to drought has been recognized as one of the most effective long-term strategies for sustainably alleviating the adverse effects of this stress. In this view, our study evaluated the response of 8 olive cultivars including 4 elite native cultivars (Zard Aliabad, Roughani, Dezful, and Shengeh) and 4 foreign cultivars (Manzanilla, Sevillana, Konservolia, and Mission) to water shortage in the Dallaho Olive Research station of Sarpole-Zahab in Kermanshah province in 2020. Olive trees underwent 3 levels of irrigation treatment including 100% full irrigation (control), 75%, and 50% deficit irrigation. Results Based on the results, 50% deficit irrigation decreased both growth and pomological traits, but determined the highest dry matter percentage. As the severity of drought stress increased, with an accumulation of sodium and malondialdehyde, an incremental increase in osmolytes was observed, as well as an enhancement of the activity of antioxidant enzymes (peroxidase and catalase). In contrast, full irrigation led to an increase in photosynthetic pigments, calcium, and potassium. Dezful and Konservolia cultivars revealed a significantly higher growth rate, correlated in the former to higher levels of chlorophyll, compatible compounds, total phenolic content, relative water content, potassium to sodium ratio, catalase, and peroxidase activities compared with other cultivars. Konservolia showed the best yield parameters under 75% and 100% irrigation regimes, correlated to higher chlorophyll, potassium, and total phenolic content (in particular at 75% ET). Conclusions Generally, the selection of more resilient or tolerant cultivars to sustain water scarcity stress is a widely operative solution to extend rainfed orchards in semi-arid environments. Our study showed that Dezful and Konservolia had the best adaptive mechanisms to cope with the detrimental effects of drought stress.

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Section: Oxidative Enzymes and Markerssupporting

confidence: 53%

Effect of three water-regimes on morpho-physiological, biochemical and yield responses of local and foreign olive cultivars under field conditions

et al. 2022

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“…Considerable genotypic differences are present among different cultivars, which employ different mechanisms to cope with drought [3,5,9,13,14,136,137]. In general, olive cultivars native to dry regions have more capability to acclimate to drought conditions than cultivars which originated in regions with a more temperate climate [14]); still, the identification of the traits of the more resistant cultivars is ambiguous, as it depends on the cultivars compared in the studies available.…”

Section: Cultivars’ Response To Droughtmentioning

confidence: 99%

“…Among Greek cultivars, Gaidourelia showed higher phenolic concentration and antioxidant activity and lower lipid peroxidation and photochemical damage than Kalamon , Koroneiki and Megaritiki [9], while in a study comparing Konservolia , Zard and Amigdalolia cultivars, Konservolia had higher chlorophyll and total carbohydrates concentrations and higher antioxidant enzymes activities, whereas the highest total phenol and proline levels were recorded in the Zard cultivar [136].…”

Section: Cultivars’ Response To Droughtmentioning

confidence: 99%

Drought Stress Effects and Olive Tree Acclimation under a Changing Climate

Brito

Dinis

Moutinho-Pereira

et al. 2019

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164

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Increasing consciousness regarding the nutritional value of olive oil has enhanced the demand for this product and, consequently, the expansion of olive tree cultivation. Although it is considered a highly resilient and tolerant crop to several abiotic stresses, olive growing areas are usually affected by adverse environmental factors, namely, water scarcity, heat and high irradiance, and are especially vulnerable to climate change. In this context, it is imperative to improve agronomic strategies to offset the loss of productivity and possible changes in fruit and oil quality. To develop more efficient and precise measures, it is important to look for new insights concerning response mechanisms to drought stress. In this review, we provided an overview of the global status of olive tree ecology and relevance, as well the influence of environmental abiotic stresses in olive cultivation. Finally, we explored and analysed the deleterious effects caused by drought (e.g., water status and photosynthetic performance impairment, oxidative stress and imbalance in plant nutrition), the most critical stressor to agricultural crops in the Mediterranean region, and the main olive tree responses to withstand this stressor.

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“…These eventually decrease CO 2 fixation in the chloroplast during the Calvin cycle [28][29][30]. Drought stress causes an increase in the formation of reactive oxygen species (ROS) negatively affecting plant metabolism through oxidative damage by lipids, proteins, and nucleic acids [31,32].…”

Section: Introductionmentioning

confidence: 99%

Foliar Application of Nano-Silicon Improves the Physiological and Biochemical Characteristics of ‘Kalamata’ Olive Subjected to Deficit Irrigation in a Semi-Arid Climate

Hassan¹,

Ajaj

Gaballah³

et al. 2022

Plants

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In Egypt’s arid and semi-arid lands where the main olive production zone is located, evapotranspiration is higher than rainfall during winter. Limited research has used nanomaterials, especially nano-silicon (nSi) to improve the growth, development, and productivity of drought-stressed fruit trees, amid the global water scarcity problem. To assess the role of nSi on drought-sensitive ‘Kalamata’ olive tree growth, and biochemical and physiological changes under drought conditions, a split-plot experiment was conducted in a randomized complete block design. The trees were foliar sprayed with nSi in the field using nine treatments (three replicates each) of 0, 150, and 200 mg.L−1 under different irrigation regimes (100, 90, and 80% irrigation water requirements ‘IWR’) during the 2020 and 2021 seasons. Drought negatively affected the trees, but both concentrations of nSi alleviated drought effects at reduced irrigation levels, compared to the non-stressed trees. Foliar spray of both concentrations of nSi at a moderate level (90% IWR) of drought resulted in improved yield and fruit weight and reduced fruit drop percentage, compared to 80% IWR. In addition, there were reduced levels of osmoprotectants such as proline, soluble sugars, and abscisic acid (ABA) with less membrane damage expressed as reduced levels of malondialdehyde (MDA), H2O2 and electrolyte leakage at 90% compared to 80% IWR. These results suggest that ‘Kalamata’ olive trees were severely stressed at 80% compared to 90% IWR, which was not surprising as it is classified as drought sensitive. Overall, the application of 200 mg.L−1 nSi was beneficial for the improvement of the mechanical resistance, growth, and productivity of moderately-stressed (90% IWR) ‘Kalamata’ olive trees under the Egyptian semi-arid conditions.

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Physiological and biochemical responses of some olive cultivars (Olea europaea L.) to water stress

Cited by 15 publications

References 72 publications

Effect of three water-regimes on morpho-physiological, biochemical and yield responses of local and foreign olive cultivars under field conditions

Effect of three water-regimes on morpho-physiological, biochemical and yield responses of local and foreign olive cultivars under field conditions

Drought Stress Effects and Olive Tree Acclimation under a Changing Climate

Foliar Application of Nano-Silicon Improves the Physiological and Biochemical Characteristics of ‘Kalamata’ Olive Subjected to Deficit Irrigation in a Semi-Arid Climate

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