Salt-induced oxidative stress in rosemary plants: Damage or protection?

Tounekti, Taïeb; Vadel, Ahmedou M.; Oñate, Marta; Khemira, Habib; Munné‐Bosch, Sergi

doi:10.1016/j.envexpbot.2010.12.016

Cited by 85 publications

(41 citation statements)

References 48 publications

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“…The observed increase in phenolic content in the present study was possibly due to the antioxidative mechanisms in response to oxidative stress induced by salt stress conditions because the phenolic enhancing effect of salinity was more distinct in limited water availability. However it should be noted that The ROS produced in the course of drought and salt stress, are detoxified by several antioxidants from the photosynthetic electron transport chain within the chloroplasts (Tounekti et al, 2011), but the compounds tested in the present study are located in the vacuole. Nevertheless, they indeed contribute to avoid ROS, since their biosynthesis significantly reduce the stress related over-reduced status which leads to the generation of ROS as reported by Kleinwächter and Selmar (2015) and Selmar and Kleinwächter (2013).…”

Section: Resultsmentioning

confidence: 69%

“…The detrimental effects of salinity on plant physiology are though to be associated with specific ion effect (salt stress), low water potential in soil solution (drought stress), nutritional imbalance, redirection of energy from growth to extracting pure water from the saline water and to produce defensive chemicals or a combination of these different factors (Munns and Tester, 2008). Results from recent studies in the past few years, however, have pointed out that sensitivity to salt stress is associated mainly with oxidative stress, which is also caused by drought stress and due to the disturbance in balance between the rates of production and elimination of reactive oxygen species (ROS) (Turkan and Demiral, 2009;Tounekti et al, 2011).…”

Section: Introductionmentioning

confidence: 99%

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The effects of salt and drought stress on phenolic accumulation in greenhouse-grown Hypericum pruinatum

et al. 2017

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Hypericum pruinatum is a medicinal herb containing several bioactive compounds with important pharmacological activity. In this study, we investigated the effects of the salt (0.03 -control, 1, 2.5, 4 and 8 dS m -1 of MgSO4, CaCl2 and NaCl salts) and drought stress (80, 100 and 120% of required water) on the content of phenolic compounds, namely chlorogenic acid, rutin, hyperoside, isoquercetine, quercitrine and quercetine in greenhouse grown plantlets. In general, the salt stress especially in elevating doses increased the levels of all of the compounds analysed, whereas drought stress did not cause a significant chance in chemical content of the plantlets. The present results indicated that abiotic stress factors, particularly salinity, have a marked influence on the content of phenolic constituents in H. pruinatum and it is a salt tolerant species. The results also indicated that phenolic compounds play a significant physiological role in salinity tolerance.

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Section: Resultsmentioning

confidence: 69%

Section: Introductionmentioning

confidence: 99%

The effects of salt and drought stress on phenolic accumulation in greenhouse-grown Hypericum pruinatum

et al. 2017

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“…However, little is known about heat stress effects on leaf auxin concentrations, although it was reported that drought decreased IAA concentration in tobacco leaves (Pustovoitova et al, 2000;Tounekti et al, 2011). On the other hand, many reports showed cytokinin loss and that ABA concentration rises in relation to heat stress (Talanova et al,2003;Li et al,2003;Xu and Huang, 2007).…”

Section: Discussionmentioning

confidence: 99%

Perioxidases play important roles in abscisic acid (ABA)-simulating photosystem II (PSII) thermostabilty of apple tree rootstock leaves

Brestič¹,

Shao²,

Ferus³

et al. 2011

Afr. J. Biotechnol.

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Leaf photosynthetic activity limited by summer heat stress represents large constraint to production process of fruit trees. To cope with this problem, we tested photosystem II (PS II) thermostability in clonal apple tree rootstocks with different growth intensity -semi-vigorous-MM106 and dwarfing-J-TE-F experiencing summer heat stress, and related antioxidative activity and phytohormonal balance. For this purpose, expanded leaves were collected and utilized for determination of 3-indoleacetic acid (IAA), cytokinins (CKs), abscisic acid (ABA) concentrations, and superoxide dismutase (SOD), total peroxidases (POX), catalase (CAT), total antioxidative activity (TAA) and PS II thermostability before and after 30 min dark exposition to temperature of 42°C (because of relatively-stable PS II). Leaves from dwarfing-J-TE-F showed higher PS II thermostability than that from semi-vigorous-MM106 as indicated by higher maximal quantum yield of primary photochemistry (Φ Po ), excitation transfer efficiency to electron transport chain (ψ o ) , electron transport yield (Φ Eo ) and lower thermal dissipation yield (Φ Do ). From antioxidant parameters, genotypic specifity can be seen in total peroxidases activity and only J-TE-F leaves predominated. Despite higher CKs concentration in leaves of MM106, active CKs did not show any difference between two rootstocks. IAA also exhibited balanced level, but ABA concentration was four times higher in J-TE-F leaves than MM106 ones. We can conclude that in PS II heat-hardening of apple tree rootstock leaves, which is at least partly provided by enhanced peroxidases activity, ABA plays the central role and J-TE-F rootstock can be recomended to heat stress in the prone regions.

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“…Z badań prowadzonych przez wielu autorów wynika, że związki chemiczne takie jak ILs mogą powodować uszkodzenia chlorofilu, co w konsekwencji powoduje zmniejszenie pochłaniania światła i zaburzenia w jego rozpraszaniu [14,24,25]. W konsekwencji taka sytuacja prowadzi do uszkodzenia obu fotosystemów PSI i PSII [14,15,26]. Niektórzy autorzy uważają ponadto, że zawartość chlorofilu jest doskonałym wskaźnikiem zdrowotności liści roślin [27,28].…”

Section: Wyniki I Dyskusjaunclassified

Toxicity of Quaternary Ammonium Salts with Iodide Anion: Growth Inhibition and Changes in Pigments Assimilation in Plants

Pawłowska

Biczak

2016

Eng. Prot. Environ.

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Salt-induced oxidative stress in rosemary plants: Damage or protection?

Cited by 85 publications

References 48 publications

The effects of salt and drought stress on phenolic accumulation in greenhouse-grown Hypericum pruinatum

The effects of salt and drought stress on phenolic accumulation in greenhouse-grown Hypericum pruinatum

Perioxidases play important roles in abscisic acid (ABA)-simulating photosystem II (PSII) thermostabilty of apple tree rootstock leaves

Toxicity of Quaternary Ammonium Salts with Iodide Anion: Growth Inhibition and Changes in Pigments Assimilation in Plants

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