Glycinebetaine-induced modulation of antioxidant enzymes activities and ion accumulation in two wheat cultivars differing in salt tolerance

Raza, S.H.; Athar, Habib‐ur‐Rehman; Ashraf, Muhammad; Hameed, Amjad

doi:10.1016/j.envexpbot.2006.12.009

Cited by 184 publications

(109 citation statements)

References 58 publications

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“…This enhancement in biomass production due to foliar application of mannitol and thiourea could have been due to their utilization in the leaves, wherein they might have acted as a source of C and N, respectively, as has been earlier reported in different studies (Mitoi et al 2009;Anjum et al 2011). Salt stress, in fact, has been reported to reduce these compounds in plants (Raza et al 2007;Daei et al 2009;Uddin et al 2011) thereby causing reduced biomass production of different plant species. Secondly, this enhancement in the biomass production in maize plants due to foliar application of mannitol and thiourea might have been due to their role in cellular osmotic adjustment (Burman et al 2004;Seckin et al 2009), because in the present study, foliar application of these organic compounds significantly enhanced the leaf RWC of maize plants that was positively associated with the enhanced plant biomass production.…”

Section: Discussionmentioning

confidence: 99%

Exogenous application of mannitol and thiourea regulates plant growth and oxidative stress responses in salt-stressed maize (Zea maysL.)

Kaya

Sönmez

Aydemir

et al. 2013

Journal of Plant Interactions

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103

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The mechanism of growth amelioration in salt-stressed maize (Zea mays L. cv., DK 647 F1) by exogenously applied mannitol (M) and thiourea (T) was investigated. Maize seedlings were planted in pots containing perlite and subjected to 0 or 100 mM NaCl in full strength Hoagland's nutrient solution. Two levels of M (15 and 30 mM) or T (3.5 and 7.0 mM) were sprayed to the leaves of maize seedlings 10 days after germination. Salinity stress caused considerable reduction in plant dry biomass, chlorophyll content, and relative water content in the maize plants. However, it increased the activities of catalase (CAT; EC 1.11.1.6), superoxide dismutase (SOD; EC 1.15.1.1), and polyphenol oxidase (PPO; EC 1.10.3.1), and levels of hydrogen peroxide (H 2 O 2 ) and electrolyte leakage, but it did not change peroxidase (POD; EC 1.11.1.7) activity. Foliar application of M or T was found to be effective in checking salt-induced shoot growth inhibition. Exogenously applied M or T reduced the activities of CAT, SOD, POD, and PPO in the salt-treated maize plants compared to those in the plants not fed with these organic compounds. Salinity increased Na ' contents but decreased those of K ' , Ca 2 ' , and P in the leaves and roots of the maize plants. Foliar-applied M or T increased the contents of K ' , Ca 2 ' , and P, but decreased that of Na ' in the salt-stressed maize plants with respect to those of the salt-stressed plants not supplied with mannitol or thiourea. Mannitol was found to be more effective than thiourea in improving salinity tolerance of maize plants in terms of growth and physiological attributes measured in the present study.

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Section: Discussionmentioning

confidence: 99%

Exogenous application of mannitol and thiourea regulates plant growth and oxidative stress responses in salt-stressed maize (Zea maysL.)

Kaya

Sönmez

Aydemir

et al. 2013

Journal of Plant Interactions

Self Cite

103

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“…POD activity was determined by measuring its ability to catalyze the colorimetric reaction of hydrogen peroxide (H2O2) and guaiacol as described by Raza et al (2007). CAT activity was determined by measuring its ability to degrade the concentration of H2O2 as described by Raza et al(2007).…”

Section: Morphological and Physiological Parameters Measurementmentioning

confidence: 99%

“…SOD activity was determined by measuring its ability to inhibit photochemical reduction of nitroblue tetrazolium (NBT) as described by Donahue (Donahue et al, 1997). POD activity was determined by measuring its ability to catalyze the colorimetric reaction of hydrogen peroxide (H2O2) and guaiacol as described by Raza et al (2007). CAT activity was determined by measuring its ability to degrade the concentration of H2O2 as described by Raza et al(2007).…”

Section: Morphological and Physiological Parameters Measurementmentioning

confidence: 99%

Identifying Differentially Expressed Genes Associated with Tolerance against Low Temperature Stress in Brassica napus through Transcriptome Analysis

Xian¹,

Luo²,

Khan³

et al. 2017

IJAB

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To cite this paper: Xian, M., T. Luo, M.N. Khan, L. Hu and Z. Xu, 2017. Identifying differentially expressed genes associated with tolerance against low temperature stress in Brassica napus through transcriptome analysis. AbstractUnder direct-seeding method of sowing, seedling survival is adversely affected due to low temperature. The purpose of this study was to understand the morphological, physiological and molecular response of rapeseed resistance to low temperature stress at seedling establishment. Two varieties Qinyou No.7 (resistant biotype) and Fengyou 730 (sensitive biotype) were used for morphological and physiological experiments under low temperature stress and the resistant variety was used for transcriptome analysis based on the Illumina HiSeq 2000 platform. Results showed resistant variety initiated osmotic regulation system firstly and then triggered the antioxidant enzyme system when exposed to low temperature stress for long duration. The MDA content firstly tended to increase and then decreased in resistant variety, but it continued to increase in sensitive variety. Through transcriptome analysis of Qinyou No. 7 under low temperature for 0 h, 24 h, 48 h and 96 h, 2254 differentially expressed unigenes clustering in 7 expression patterns were participated in low temperature stress. Proteinserine/threonine kinases, myo-inositol-1-phosphate synthases and calmodulins, as the members of ABA and IP3/Ca2+ signal transduction pathway, played an important role in the low temperature stress. Different expressed genes dataset provides useful candidate genes for functional analysis of rapeseed resistance to low temperature.

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“…In the meantime, higher concentrations of proline 7.5 mM (P3) decreased significantly all the yield components of the two cultivars of sunflower plants compared with P0 at S0, S1 and S2 seawater salinity stress. Proline as osmoprotectants promotes plant growth and yield under normal or stress conditions due to its osmoprotective effect on photosynthetic machinery and regulation of ion homeostasis (Raza et al, 2007) as well as improving CO 2 assimilation in plants under stress (Hussain et al, 2008) and because of its role in biosynthesis and transport of hormones like cytokinins that may have a role in the transport of photoassimilates (Taize and Zeiger, 2006). Table 5 clearly show that, S1 & S2 irrigation water decreased significantly oil% and protein% of the yielded seeds of two cultivars Sakha 53 and Giza 102 as compared with S0.…”

Section: Changes In Yield and Yield Componentsmentioning

confidence: 99%

Pre-sowing Seed Treatment with Proline Improves some Growth, Biochemical aspects, yield quantity and quantity of two sunflower cultivars grown under seawater salinity stress

2015

Sci. Agric

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Citation Sadak M Sh. and Hisham A. M. Mostafa 2015.Physiological role of pre-sowing seed with proline on some growth, biochemical aspects, yield quantity and quality of two sunflower cultivars grown under seawater salinity stress. Scientia Agriculturae, 9 (1), 60-69. Retrieved from www.pscipub.com (DOI: 10.15192/PSCP.SA.2015.9.1.6069)The depletion of freshwater resources leads to the utilisation of various alternative sources ofwater, such as seawater. In this regard, the presowing treatment of proline is one of the alternative shotgun approaches to increase plant stress tolerance. A pot experiment was conducted at wire house of the National Research Centre, Dokki, Cairo, Egypt to elucidate the effect of pre-sowing seed treatment with proline (0, 2.5, 5 and 7.5 mM as P0, P1, P2 and P3, respectively) on growth, some biochemical attributes of two cultivars of sunflower plant (Helianthus annuus L.) plants under seawater stress (0.23, 3.13, 6.25 dS/m as tap water S0, S1 and S2, respectively). Plant samples were collected after 45 days from sowing. Results showed that increasing sea water concentration induced reduction in all growth parameters (plant height, number of leaves shoot fresh and dry weights/plant), photosynthetic pigments (chlorophyll a, chlorophyll b and carotenoids), yield parameters (head diameter, seed weight/head and 100-seed weight), oil% and protein % of the yielded seeds of the two cultivars of sunflower plant compared with those of the untreated unstressed plants (S0). In contrast, increasing sea water stress led to increases in total phenolics, total soluble carbohydrate, free amino acids and proline contents. Special attention was paid to the effect of proline treatments on the salt stressed sunflower that stimulates plant salt tolerance via improving growth parameters, photosynthetic pigments, total soluble carbohydrate, free amino acids, proline contents. Meanwhile phenolic content decreased relative to their corresponding salinity controls. From these results, pre-sowing sunflower seed treatment with proline seem to enhance sunflower salt tolerance by amelioration of photosynthetic pigments, osmoprotectants of vegetative organs, hence improved plant growth and the preservation of a suitable plant water status under salinity conditions.

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Glycinebetaine-induced modulation of antioxidant enzymes activities and ion accumulation in two wheat cultivars differing in salt tolerance

Cited by 184 publications

References 58 publications

Exogenous application of mannitol and thiourea regulates plant growth and oxidative stress responses in salt-stressed maize (Zea maysL.)

Exogenous application of mannitol and thiourea regulates plant growth and oxidative stress responses in salt-stressed maize (Zea maysL.)

Identifying Differentially Expressed Genes Associated with Tolerance against Low Temperature Stress in Brassica napus through Transcriptome Analysis

Pre-sowing Seed Treatment with Proline Improves some Growth, Biochemical aspects, yield quantity and quantity of two sunflower cultivars grown under seawater salinity stress

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