Contrasting effects of water salinity and ozone concentration on two cultivars of durum wheat ( Triticum durum Desf.) in Mediterranean conditions

Gerosa, Giacomo; Marzuoli, Riccardo; Finco, Angelo; Monga, Robert; Fusaro, Isa; Faoro, Franco

doi:10.1016/j.envpol.2014.05.027

Cited by 20 publications

(20 citation statements)

References 71 publications

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“…За таких умов у клітинах живих організмів розвиваються процеси окиснювального стресу з утворенням активних форм кисню (АФК), які мають високу реакційну здатність і порушують хід багатьох процесів у клітині, а також її структуру, викликають перекисне окиснення ліпідів, пошкоджують структурні білки, інгібують активність ензимів тощо (Quan et al, 2008;Gür et al, 2010). Ряд досліджень підтверджує, що в рослинах окиснювальний стрес виникає в результаті дії факторів різної природи (Gerosa et al, 2014;Lykholat et al, 2016). Антиоксиданти (АО) білкової природи в клітинах і тканинах рослин Ecol.…”

Section: матеріали та методи дослідженьunclassified

Dynamics of protection antioxidant system of representatives of Amelanchier Medik. genus during ontogenesis under Steppe Pridniprov’e conditions

Lykholat

Хромых

Шупранова

et al. 2018

ean

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Antioxidant reaction in leaves of the representatives of Amelanchier Medik. genus introduced in Steppe Pridniprov’e during vegetative period is studied. Activity of bensidin-peroxidase (BPOD), guaiacol-peroxidase (GPOD) and catalase (CAT) in leaves of four kinds Amelanchier Medik is analysed. Specific features of dynamics of enzymes activity in leaves of representatives of Amelanchier Medik. genus are defined according to phases of seasonal development and in reply to action of hydrothermal stress. On the basis of the received results the wide range of interspecific variability of enzymes activity in leaves of Amelanchier kinds, introduced in new conditions of existance is shown. The studied kinds were characterised by high activity ВРОD in all vegetative season. The greatest activity in leaves of all kinds was shown in a phase of secondary growth, in the most adverse hydrothermal mode that testified to passage of adaptive processes in plants. It is established, that unlike A. ovalis in which leaves level of activity BPOD was equal enough, other kinds in process of ontogenesis have shown sharper differences in activity of enzyme. The difference was essential, especially at A. canadensis in which leaves in May and June sharp falling of activity in 4,0 and 2,9 times accordingly in comparison with April was noticed, and in July and August – sharp increase that testified to a stressful condition of plants. The opposite tendency is found out in dynamics of activity GPOD i CAT. In the beginning phases of active growth (April) at all kinds the highest activity of enzymes, but, since May and till the end of the supervision period was observed, activity sharply went down at all kinds Amelanchier. Essential activation GPOD in a phase of active growth can be connected with processes of lignification to an greater degree, rather than with protection against oxidative stress. Thus in leaves of A. ovalis and A. canadensis higher activity gvaiacol-peroxidase, than at A. spicata and A. florida was observed. Small increase of activity was observed in June and to an greater measure in three kinds: A. ovalis, A. florida і A. spicata. In leaves of A. canadensis activity increase was marked in August in comparison with the period from May till July. The analysis of dynamics of catalase activity in leaves of representatives Amelanchier Medik. has shown similitude as well as at gvaiacol-peroxidase: the highest level was observed in April, and further there was an essential recession of enzyme activity. Dynamics of catalase activity during vegetation has appeared the most similar at kinds of A. ovalis and A. canadensis. In leaves of A. florida unlike last kinds the small peak of activity in July was marked, and in August activity again went down on 21,8 % in comparison with July. A. spicata has shown essential increase of activity САТ in August in comparison with July in 6,4 times. Thus, found out different directions of activity changes of oxidoreductases specify in participation antioxidant systems in realisation of different ways of adaptation of kinds-introducents of Amelanchier Medik. genus in ontogenesis process in the conditions of Pridneprov’e Steppe. Variability of enzymes activity level in leaves of Amelanchier Medik. in the course of vegetation means the adaptation to conditions of environment and as a whole displays adaptive ability of the investigated kinds at the expense of high antioxidant potential to counteract development of oxidative stress at action adverse of abiotic factors.

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Section: матеріали та методи дослідженьunclassified

Dynamics of protection antioxidant system of representatives of Amelanchier Medik. genus during ontogenesis under Steppe Pridniprov’e conditions

Lykholat

Хромых

Шупранова

et al. 2018

ean

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“…Holm oaks (Quercus ilex L.) treated under 150 mM NaCl treatments did not show significant photosynthetic depression by eO 3 (Guidi et al, 2016). In addition, previous studies have reported that salt stresses mitigated negative effects of eO 3 via stomatal closure (Gerosa et al, 2014), and its effects were exacerbated under salt stresses (Calzone et al, 2019), or no interaction between eO 3 and salt stresses (Guidi et al, 2016). Thus, the views of the combined effects of eO 3 and salt stresses are still inconsistent.…”

Section: Introductionmentioning

confidence: 97%

“…Excess salinity causes physiological and metabolic imbalance in plants via ionic stresses (Marschner, 2012;Polle and Chen, 2015;Wungrampha et al, 2018). The effects of salinity on plants have been investigated with sodium chloride (NaCl), which are known to cause ionic imbalance and inhibit mineral ion uptake of potassium (K) and calcium (Ca) (Gerosa et al, 2014;Guidi et al, 2016;Plesa et al, 2018). Since arid and semi-arid lands contain chlorides and carbonates of several minerals, including Na, Ca, and magnesium (Mg), the severe effects of alkaline salt accumulation on plants and trees have received increased attention (Yang et al, 2008;Liu and Shi, 2010;Wang et al, 2013).…”

Section: Introductionmentioning

confidence: 99%

Salt Stress Reduced the Seedling Growth of Two Larch Species Under Elevated Ozone

Sugai

Wang

Satoh

et al. 2019

Front. For. Glob. Change

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The effect of elevated ozone (eO 3) and soil salinization with alkaline salts in northeastern (NE) China is a serious concern affecting the success of the national replanting project. As planted areas exceed 4 million hectares in China, we must consider future afforestation efforts after thinning and harvesting. Here, we investigated eO 3 and salt stress on Dahurian larch (Larix gmelinii var. japonica; DL) and Japanese larch (L. kaempferi; JL) seedlings. The seedlings were exposed to eO 3 (∼70 nmol mol −1) and ambient ozone (aO 3) (∼25∼40 nmol mol −1) for one growing season in an open top chamber (OTC) system with simulated salinity in NE China (alkaline salt, NaHCO 3 :NaCl = 9:1, 20mM Na +). The seedlings under salt-free treatment received tap water. Although the effects of eO 3 on DL were not significant, eO 3 significantly increased total dry mass and total leaf area index of JL. There was no significant reduction in total dry mass under salt stress in both species. The relationship between needle Na and other mineral contents indicated that both species maintained K contents even with excess Na contents in needles. DL showed relatively lower reduction of other mineral contents, indicating higher salt tolerance of needle element homeostasis than JL. Contrary to our hypothesis, there were no interaction effects of eO 3 and salt stress on both species. These results indicated that DL seedlings may be more suitable than JL seedlings as a future afforestation species under eO 3 levels of <70 nmol mol −1 at saline soil condition.

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“…Although a part of ROS generated by O3 can be detoxified in the leaves by radical-scavenging system, the remaining ROS cause oxidative stress in the leaf cells (Gill and Tuteja 2010). As a result, O3 leads to reductions in net photosynthetic rate and other biochemical processes in the leaves, and finally in the growth and yield of crops (Akhtar et al 2010, Gerosa et al 2014). There are controversial empirical data on O3-induced alteration of detoxification capacity in plants.…”

Section: Introductionmentioning

confidence: 99%

Mitigation mechanism of ozone-induced reduction in net photosynthesis of Bangladeshi wheat under soil salinity stress

Kamal¹,

Yamaguchi²,

Kinose³

et al. 2019

Photosynt.

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To clarify the combined effects of O3 and soil salinity on net photosynthetic rate, stomatal conductance, and radical scavenging system of Bangladeshi spring wheat cv. BAW1059, plants were grown in two soil salinity levels (irrigated with 0 and 150 mM NaCl solutions) and exposed to three O3 concentrations [charcoal-filtered air (CF), 1.0-fold the ambient O3 concentration (1.0×O3), and 1.5-fold the ambient O3 concentration (1.5×O3)]. The soil salinity mitigated adverse effects of O3 on net photosynthesis in the 7 th and flag leaves. The soil salinity did not induce stomatal closure, indicating no limitation of stomatal O3 uptake. The activities of ascorbate peroxidase and catalase were stimulated by the soil salinity in the 7 th and flag leaves, especially under 1.5×O3 concentration. In the flag leaf, the soil salinity induced a significant increase in dehydroascorbate reductase activity and ascorbate concentration. These results suggest that the soil salinity activated detoxification capacity related to mitigation of O3 damage on net photosynthesis in both 7 th and flag leaves, while the activated enzymes and antioxidants were different between the leaves.

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Contrasting effects of water salinity and ozone concentration on two cultivars of durum wheat ( Triticum durum Desf.) in Mediterranean conditions

Cited by 20 publications

References 71 publications

Dynamics of protection antioxidant system of representatives of Amelanchier Medik. genus during ontogenesis under Steppe Pridniprov’e conditions

Dynamics of protection antioxidant system of representatives of Amelanchier Medik. genus during ontogenesis under Steppe Pridniprov’e conditions

Salt Stress Reduced the Seedling Growth of Two Larch Species Under Elevated Ozone

Mitigation mechanism of ozone-induced reduction in net photosynthesis of Bangladeshi wheat under soil salinity stress

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