Salinity effects on polyphenol content and antioxidant activities in leaves of the halophyte Cakile maritima

Ksouri, Riadh; Megdiche, Wided; Debez, Ahmed; Falleh, Hanen; Grignon, Claude; Abdelly, Chédly

doi:10.1016/j.plaphy.2007.02.001

Cited by 427 publications

(273 citation statements)

References 31 publications

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“…4c and d). Similar to other medicinal plants (Abrol et al, 2012;Colla et al, 2013;Ksouri et al, 2007;Shao et al, 2015), moderate saline stress was more beneficial to the accumulation of bioactive compounds in the leaves of honeysuckle ( Fig. 4c and d), as severe stress greatly reduced carbon supply for phenolic synthesis by inhibiting CO 2 assimilation.…”

Section: Discussionsupporting

confidence: 54%

“…Under saline stress, plant antioxidant system is often stimulated to defense oxidative injury, and antioxidant capacity has been used as a criterion for the comparison of salt tolerance among crop cultivars (Ashrafi et al, 2015;Kiani-Pouya, 2015;Zhang et al, 2014). Phenolic compounds which are secondary metabolites have high ROS scavenging capacity, and accumulation of phenolics is commonly considered as a positive self-protection way to strengthen ROS scavenging ability in plants upon salt-induced oxidative stress (Abrol et al, 2012;Colla et al, 2013;Falleh et al, 2012;Ksouri et al, 2007;Shao et al, 2015;Zhao et al, 2015). Nevertheless, antioxidant activity of phenolic compounds is mainly proved by in vitro free radical scavenging experiments, and their roles in mitigating oxidative stress in vivo are still open to debate (Hernandez et al, 2009;Hernandez and Van Breusegem, 2010).…”

Section: Introductionmentioning

confidence: 99%

“…Thus, as a traditional viewpoint, phenolic compounds are defined as secondary antioxidants, and play an assisting role in detoxifying ROS, when the primary antioxidant system is depressed under severe stress (Fini et al, 2011). However, this traditional viewpoint has been challenged recently, because moderate saline stress is more liable to induce accumulation of phenolics in plants without severe oxidative stress and depression of antioxidant system (Abrol et al, 2012;Karray-Bouraoui et al, 2010;Ksouri et al, 2007;Shao et al, 2015;Zhao et al, 2015). Therefore, the relation between antioxidant system and phenolic metabolites in resisting oxidative stress is still not clear.…”

Section: Introductionmentioning

confidence: 99%

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Saline stress enhanced accumulation of leaf phenolics in honeysuckle ( Lonicera japonica Thunb.) without induction of oxidative stress

Zhao

Bian

et al. 2017

Plant Physiology and Biochemistry

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a b s t r a c tHoneysuckle (Lonicera japonica Thunb.) is a traditional medicinal plant in Chinese, and chlorogenic acid and luteolosid are its specific bioactive phenolic compounds. This study was to investigate leaf antioxidant responses in honeysuckle to saline stress with emphasis on phenolics through hydroponic experiments and field trials. NaCl stress did not stimulate antioxidant system including superoxide dismutase, ascorbate peroxidase, catalase and ascorbate, and had no significant effect on lipid peroxidation in the leaves. Consistently, no inhibition on photochemical capacity of photosystems suggested that reactive oxygen species (ROS) was maintained at a normal level under NaCl stress. However, leaf phenolic synthesis was activated by NaCl stress, indicated by elevated genes transcription and activity of phenylalanine ammonia-lyase and increased phenolics concentration. Specifically, leaf chlorogenic acid concentration was increased by 67.43% and 48.86% after 15 days of 150 and 300 mM NaCl stress, and the increase of luteolosid concentration was 54.26% and 39.74%. The accumulated phenolics hardly helped detoxify ROS in vivo in absence of oxidative stress, but the elevated phenolic synthesis might restrict ROS generation by consuming reduction equivalents. As with NaCl stress, soil salinity also increased concentrations of leaf phenolics including chlorogenic acid and luteolosid without exacerbated lipid peroxidation. In conclusion, leaf phenolics accumulation is a mechanism for the acclimation to saline stress probably by preventing oxidative stress in honeysuckle; leaf medicinal quality of honeysuckle can be improved by saline stress due to the accumulation of bioactive phenolic compounds.

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Section: Discussionsupporting

confidence: 54%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Saline stress enhanced accumulation of leaf phenolics in honeysuckle ( Lonicera japonica Thunb.) without induction of oxidative stress

Zhao

Bian

et al. 2017

Plant Physiology and Biochemistry

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“…The importance of phenolics accumulation in resisting salt-induced oxidative stress has been demonstrated (Wahid and Ghazanfar 2006;Ksouri et al 2007). Recently, Abrol et al (2012) reported that secondary metabolite contents were initially increased compared with the later increase in antioxidant enzymes activities, when Swertia chirata Buch.-Ham.…”

Section: Oxidative Stress Induced By Salt Stressmentioning

confidence: 99%

Physiological adaptive mechanisms of plants grown in saline soil and implications for sustainable saline agriculture in coastal zone

et al. 2013

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There is large area of saline abandoned and lowyielding land distributed in coastal zone in the world. Soil salinity which inhibits plant growth and decreases crop yield is a serious and chronic problem for agricultural production. Improving plant salt tolerance is a feasible way to solve this problem. Plant physiological and biochemical responses under salinity stress become a hot issue at present, because it can provide insights into how plants may be modified to become more tolerant. It is generally known that the negative effects of soil salinity on plants are ascribed to ion toxicity, oxidative stress and osmotic stress, and great progress has been made in the study on molecular and physiological mechanisms of plant salinity tolerance in recent years. However, the present knowledge is not easily applied in the agronomy research under field environment. In this review, we simplified the physiological adaptive mechanisms in plants grown in saline soil and put forward a practical procedure for discerning physiological status and responses. In our opinion, this procedure consists of two steps. First, negative effects of salt stress are evaluated by the changes in biomass, crop yield and photosynthesis. Second, the underlying reasons are analyzed from osmotic regulation, antioxidant response and ion homeostasis. Photosynthesis is a good indicator of the harmful effects of saline soil on plants because of its close relation with crop yield and high sensitivity to environmental stress. Particularly, chlorophyll a fluorescence transient has been accepted as a reliable, sensitive and convenient tool in photosynthesis research in recent years, and it can facilitate and enrich photosynthetic research under field environment.

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“…Actuellement, de nombreux travaux portent sur l'étude de la résistance des halophytes aux sels solubles dans le but de contribuer à l'augmentation de la production fourragère pour améliorer la production animale des régions arides méditer-ranéennes (Barhoumi et al, 2007 ;Ksouri et al, 2007).…”

Section: Introductionunclassified

Étude de la résistanced'Atriplex halimussubsp.schweinfurthiiaux sels solubles

Nedjimi¹

2010

Acta Botanica Gallica

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Salinity effects on polyphenol content and antioxidant activities in leaves of the halophyte Cakile maritima

Cited by 427 publications

References 31 publications

Saline stress enhanced accumulation of leaf phenolics in honeysuckle ( Lonicera japonica Thunb.) without induction of oxidative stress

Saline stress enhanced accumulation of leaf phenolics in honeysuckle ( Lonicera japonica Thunb.) without induction of oxidative stress

Physiological adaptive mechanisms of plants grown in saline soil and implications for sustainable saline agriculture in coastal zone

Étude de la résistanced'Atriplex halimussubsp.schweinfurthiiaux sels solubles

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