Effects of salinity and ascorbic acid on growth, water status and antioxidant system in a perennial halophyte

Hameed, Abdul; Gulzar, Salman; Aziz, Irfan; Hussain, Tabassum; Gul, Bilquees; Khan, M. Ajmal

doi:10.1093/aobpla/plv004

Cited by 81 publications

(54 citation statements)

References 76 publications

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“…Exogenous application of these compounds not only translocated to different plant parts but also trigger its own biosynthesis in different plant parts (Abdelgawad 2014;Hameed et al 2015). However, different plants respond differently to exogenously applied organic compounds including AsA, possibly due to their differential translocation patterns (Ali and Ashraf 2011b;Hameed et al 2015). Normally, the functions of roots and leaves are directly but differently influenced by the changes in the surrounding environment.…”

Section: Discussionmentioning

confidence: 99%

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Modulations in plant water relations and tissue-specific osmoregulation by foliar-applied ascorbic acid and the induction of salt tolerance in maize plants

et al. 2015

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Plant water status and cellular osmotic adjustments play a key role in the salt tolerance of plants. An experiment was conducted to assess the influence of foliarapplied ascorbic acid (AsA) on the plant water relations, cellular osmotic adjustments, uptake, and accumulation of different ions in the two high yielding maize cultivars (Agaiti-2002 and EV-1098) at early growth stage under salt stress (120 mM NaCl). Salt stress altered growth, water relation attributes, osmolytes accumulation, and decreased the uptake of K ? , Ca 2? , P, and N, while increased the uptake and accumulation of Na ? in different plant parts (leaf, stem, and root). Exogenous AsA increased the accumulation of AsA in different plant parts, particularly in leaves and roots. Moreover, AsA application resulted in the accumulation of proline and glycinebetaine (GB) in the roots and leaves of both maize cultivars when under salt stress. Foliar application of AsA also increased the uptake of minerals such as K ? , Ca 2? , P, and N and decreased the uptake and accumulation of Na ? in different plant parts. Taken together, the AsA-induced enhanced accumulation of osmolytes (GB and proline) and AsA increased the K ? / Na ? ratio, and more accumulation of beneficial nutrients in the roots and leaves enhanced water uptake from soil and reduced the negative effects of Na ? in the salt-stressed maize plants. The results suggested that foliar-applied AsA either accelerated the tissue-specific translocation of AsA or altered the de novo synthesis of AsA to mitigate the adverse effects of salinity in maize plants.

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Section: Discussionmentioning

confidence: 99%

“…accumulation due to AsA application was positively related with more AsA concentration in the root and leaf as compared with stem. The higher AsA concentrations in the leaves and roots could be due to more translocation of AsA to these plant organs or due to the de novo synthesis of AsA (Abdelgawad 2014;Hameed et al 2015). The reduced Na ?…”

Section: Discussionmentioning

confidence: 99%

Modulations in plant water relations and tissue-specific osmoregulation by foliar-applied ascorbic acid and the induction of salt tolerance in maize plants

et al. 2015

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“…It was also shown that salinity stress causes an increase in the concentration of antioxidants [6,42]. Thus, mild salt-stress might produce healthier vegetables containing high amounts of antioxidants.…”

Section: Discussionmentioning

confidence: 99%

Changes in secondary metabolites in the halophytic putative crop species Crithmum maritimum L., Triglochin maritima L. and Halimione portulacoides (L.) Aellen as reaction to mild salinity

Boestfleisch

Papenbrock

2017

PLoS ONE

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It is assumed that salinity enhances the concentration of valuable metabolites in halophytes. The objective was to find a salt concentration and a point in time at which the yield for the valuable metabolites was maximal. Therefore, three different halophyte species were grown under different salinities and harvested over a period from shortly after stress induction up to three weeks. Various reaction patterns were found in the metabolite composition of the analyzed plant material. Halimione portulacoides showed a “short term response”, indicated by an increase in all metabolites analyzed after a few hours, whereas Crithmum maritimum showed a “long term response” through accumulation of proline starting after days. Triglochin maritima did not change in metabolite concentration, but like the other plant species the biomass was reduced by salinity. Generally, a higher production in secondary metabolites by higher salinity was outbalanced by a reduction in biomass production. Concentrations of analyzed antioxidants showed a similar reaction and correlated with each other.

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“…It has been observed previously that Potential antioxidants produced within plants and applied exogenously reduced the effects of stresses in plants (Athar et al 2008(Athar et al , 2009Khan et al 2013;Alhasnawi et al 2015;Agada 2016). Ascorbic acid is a strong antioxidant, and it involves in cell wall expansion, cell division, stimulate total leaf area, promote photosynthetic pigments and improve the tolerance of plants against multifarious stresses by scavenging ROS (Gallie 2013;Hameed et al 2015;Dey et al 2016). Salicylic acid has been involved in regulation of important physiological processes such as nitrogen metabolism, photosynthesis and osmolyte regulation (Khan et al 2014).…”

Section: Discussionmentioning

confidence: 99%

Effect of ellagic acid on growth and physiology of canola (Brassica napus L.) under saline conditions

Khan

Nazar

Lang

et al. 2017

Journal of Plant Interactions

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Salinity stress is limiting growth and productivity of plants in many areas of the world. Plants adopted different strategies to minimize the effect of salt stress. A pot experiment was conducted to investigate the morphological and physiological changes produced in Canola (Brassica napus) by exogenous application of ellagic acid (EA) under saline conditions. EA is an antioxidant, expected to reduce the effect of salinity stress. The seeds of two canola cultivars, Rainbow and Oscar, were soaked for 6 h with different concentrations of EA (0, 55 and 110 µg/ml). The soaked seeds were sown in small pots. Salt stress was imposed on the plants by applying NaCl solutions of different concentrations (0, 60 and 120 mM) and the duration of stress was for four weeks. Salinity stress reduced seed germination and disturbed the morphological and physiological attributes of B. napus. Application of EA as seed soaking reduced the effect of salinity and enhanced the growth of plants. Overall, we could confirm a significant role of EA by inducing salinity tolerance in B. napus. ARTICLE HISTORY

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Effects of salinity and ascorbic acid on growth, water status and antioxidant system in a perennial halophyte

Cited by 81 publications

References 76 publications

Modulations in plant water relations and tissue-specific osmoregulation by foliar-applied ascorbic acid and the induction of salt tolerance in maize plants

Modulations in plant water relations and tissue-specific osmoregulation by foliar-applied ascorbic acid and the induction of salt tolerance in maize plants

Changes in secondary metabolites in the halophytic putative crop species Crithmum maritimum L., Triglochin maritima L. and Halimione portulacoides (L.) Aellen as reaction to mild salinity

Effect of ellagic acid on growth and physiology of canola (Brassica napus L.) under saline conditions

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