Exogenous sucrose can enhance tolerance of Arabidopsis thaliana seedlings to salt stress

Qiu, Zongbo; Wang, Y. F.; Zhu, AiJing; Peng, Fanglin; Wang, L. S.

doi:10.1007/s10535-014-0444-3

Cited by 24 publications

(12 citation statements)

References 33 publications

(34 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…These authors' main suggestion was that negatively-charged cell wall polysaccharides, including pectin, perform important roles in coping with salt stress. In this work, the finding agrees with that of Qiu et al, (2014), an external supply of exogenous sucrose could enhance the tolerance of Arabidopsis seedlings to salt stress through elevation of CAT, POD, and SOD activities.…”

Section: Biochemical Estimationsupporting

confidence: 91%

Accumulation of antioxidants in rice callus (Oryza sativa L.) induced by β-glucan and salt stress

Alhasnawi¹,

Zain²,

Kadhimi³

et al. 2017

Aust J Crop Sci

View full text Add to dashboard Cite

Salinity stress causes a considerable reduction in callus growth. Mushroom polysaccharides (β-glucan) are the most promising groups of antioxidant compounds. An in vitro experiment was conducted to evaluate the potential function of exogenously applied β-glucan in alleviating the accumulation of antioxidants in rice callus. In this study, morphological, chemical, and biochemical parameters of an embryogenic callus of the rice variety, MR269, were investigated under 200mM NaCl stress conditions after pre-treatment with (0, 0.5, 1 and 1.5 mg/L) β-glucan in culture media. The present study sought to evaluate chemical, biochemical, and callus growth characterization. The results revealed that callus exposed to stressful media exhibited a significant decrease in callus growth and contents of K + and Ca +2. In addition, significant accumulation of Na + and Na + /K + was found, as well as an enhanced enzymatic antioxidant system and elevated proline activities under NaCl conditions. Furthermore, exogenous addition of β-glucan at 0.5-1.5mg/L under NaCl stress induced a pronounced, significant increase of callus growth, K + and Ca +2 contents, and enzymatic antioxidant and proline activities. In contrast, a significant decrease was found in the levels of Na + and Na + /K + , particularly in callus treated with NaCl. β-Glucan ameliorates the adverse effects of NaCl stress, and the extent of amelioration depends on the type of β-glucan agent as well as treatment duration (three months). The changes mentioned are important for determining the morphological, chemical, and biochemical parameters of salinity tolerance in callus. This study demonstrated that exogenous β-glucan exhibits alleviation of the harmful effects of salt stress and increases salinity resistance in callus rice.

show abstract

Section: Biochemical Estimationsupporting

confidence: 91%

Accumulation of antioxidants in rice callus (Oryza sativa L.) induced by β-glucan and salt stress

Alhasnawi¹,

Zain²,

Kadhimi³

et al. 2017

Aust J Crop Sci

View full text Add to dashboard Cite

show abstract

“…In light of reduced growth and respiration, hexose sugars are likely contributing to osmotic adjustment. This is supported by the observation that an exogenous application of Suc enhances the tolerance of Arabidopsis seedlings to salt (Qiu et al, 2014).…”

Section: Salt Reduces Source and Sink Strengthmentioning

confidence: 70%

Differential Role for Trehalose Metabolism in Salt-Stressed Maize

et al. 2015

View full text Add to dashboard Cite

Little is known about how salt impacts primary metabolic pathways of C 4 plants, particularly related to kernel development and seed set. Osmotic stress was applied to maize (Zea mays) B73 by irrigation with increasing concentrations of NaCl from the initiation of floral organs until 3 d after pollination. At silking, photosynthesis was reduced to only 2% of control plants. Salt treatment was found to reduce spikelet growth, silk growth, and kernel set. Osmotic stress resulted in higher concentrations of sucrose (Suc) and hexose sugars in leaf, cob, and kernels at silking, pollination, and 3 d after pollination. Citric acid cycle intermediates were lower in salt-treated tissues, indicating that these sugars were unavailable for use in respiration. The sugar-signaling metabolite trehalose-6-phosphate was elevated in leaf, cob, and kernels at silking as a consequence of salt treatment but decreased thereafter even as Suc levels continued to rise. Interestingly, the transcripts of trehalose pathway genes were most affected by salt treatment in leaf tissue. On the other hand, transcripts of the SUCROSE NONFERMENTING-RELATED KINASE1 (SnRK1) marker genes were most affected in reproductive tissue. Overall, both source and sink strength are reduced by salt, and the data indicate that trehalose-6-phosphate and SnRK1 may have different roles in source and sink tissues. Kernel abortion resulting from osmotic stress is not from a lack of carbohydrate reserves but from the inability to utilize these energy reserves.

show abstract

“…Additionally, SOD, CAT, and POD actively scavenge ROS in salt-stressed plants [41, 42]. Notably, enhanced anthocyanin production increases SOD, CAT, and POD activities, and improves the survival rate of Arabidopsis seedlings under salt stress [42].…”

Section: Discussionmentioning

confidence: 99%

Overexpression of snapdragon Delila (Del) gene in tobacco enhances anthocyanin accumulation and abiotic stress tolerance

Naing

Park

et al. 2017

BMC Plant Biol

View full text Add to dashboard Cite

BackgroundRosea1 (Ros1) and Delila (Del) co-expression controls anthocyanin accumulation in snapdragon flowers, while their overexpression in tomato strongly induces anthocyanin accumulation. However, little data exist on how Del expression alone influences anthocyanin accumulation.ResultsIn tobacco (Nicotiana tabacum ‘Xanthi’), Del expression enhanced leaf and flower anthocyanin production through regulating NtCHS, NtCHI, NtF3H, NtDFR, and NtANS transcript levels. Transgenic lines displayed different anthocyanin colors (e.g., pale red: T0-P, red: T0-R, and strong red: T0-S), resulting from varying levels of biosynthetic gene transcripts. Under salt stress, the T2 generation had higher total polyphenol content, radical (DPPH, ABTS) scavenging activities, antioxidant-related gene expression, as well as overall greater salt and drought tolerance than wild type (WT).ConclusionWe propose that Del overexpression elevates transcript levels of anthocyanin biosynthetic and antioxidant-related genes, leading to enhanced anthocyanin production and antioxidant activity. The resultant increase of anthocyanin and antioxidant activity improves abiotic stress tolerance.

show abstract

Exogenous sucrose can enhance tolerance of Arabidopsis thaliana seedlings to salt stress

Cited by 24 publications

References 33 publications

Accumulation of antioxidants in rice callus (Oryza sativa L.) induced by β-glucan and salt stress

Accumulation of antioxidants in rice callus (Oryza sativa L.) induced by β-glucan and salt stress

Differential Role for Trehalose Metabolism in Salt-Stressed Maize

Overexpression of snapdragon Delila (Del) gene in tobacco enhances anthocyanin accumulation and abiotic stress tolerance

Contact Info

Product

Resources

About