Pyramiding ascorbate–glutathione pathway in Lycopersicum esculentum confers tolerance to drought and salinity stress

Raja, Vaseem; Wani, Umer Majeed; Wani, Z. A.; Jan, Nelofer; Chandrasekhar, Kottakota; Reddy, Malireddy K.; Kaul, Tanushri; John, Riffat

doi:10.1007/s00299-021-02764-8

Cited by 36 publications

(23 citation statements)

References 71 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Previous studies have shown that the levels of GSH increase in response to drought stress [ 29 ]. Furthermore, exogenously applied and endogenously increased GSH can improve drought stress tolerance in many plant species [ 27 , 30 , 31 , 32 ]. While we found no significant changes in the content of GSH in our drought assay, the plants accumulated more GSH in the severe drought stress condition.…”

Section: Discussionmentioning

confidence: 99%

Comparative Metabolic Study of Two Contrasting Chinese Cabbage Genotypes under Mild and Severe Drought Stress

Chen

Shen

Yang

et al. 2022

IJMS

View full text Add to dashboard Cite

Chinese cabbage (Brassica rapa L. ssp. pekinensis) is an important leafy vegetable crop cultivated worldwide. Drought is one of the most important limiting factors for the growth, production and quality of Chinese cabbage due to its weak drought tolerance. In order to deepen the understanding of drought stress response in Chinese cabbage, metabolomics studies were conducted in drought−tolerant (DT) and drought−susceptible (DS) genotypes of Chinese cabbage under water deficit−simulated mild and severe drought stress conditions. A total of 777 metabolites were detected, wherein 90 of them were proposed as the drought−responsive metabolites in Chinese cabbage, with abscisic acid (ABA), serine, choline alfoscerate, and sphingosine as potential representative drought stress biomarkers. We also found that drought−tolerant and drought−susceptible genotypes showed differential metabolic accumulation patterns with contrasting drought response mechanisms. Notably, constitutively high levels of ABA and glutathione were detected in drought−tolerant genotype in all tested and control conditions. In addition, proline, sucrose, γ−aminobutyric acid, and glutathione were also found to be highly correlated to drought tolerance. This study is the first metabolomic study on how Chinese cabbage responds to drought stress, and could provide insights on how to develop and cultivate new drought−resistant varieties.

show abstract

Section: Discussionmentioning

confidence: 99%

Comparative Metabolic Study of Two Contrasting Chinese Cabbage Genotypes under Mild and Severe Drought Stress

Chen

Shen

Yang

et al. 2022

IJMS

View full text Add to dashboard Cite

show abstract

“…In nature, plants are continuously subjected to multiple environmental stresses during their different phases of growth (Zhu et al, 2021). Salinity is one of the deleterious abiotic stresses which inhibits crop growth and development (Raja et al, 2021). Salt stress has great effects on plant functioning and metabolism and significantly impedes productivity (Valenzuela et al, 2022).…”

Section: Introductionmentioning

confidence: 99%

Effects of priming on germination and biochemical attributes of three maize lines under saline condition

Olayinka

Abdulkareem

Abdulbaki³

et al. 2022

Bioagro

View full text Add to dashboard Cite

It has been shown that the adverse effects of salinity can vary between different varieties of the same plant species. This study was conducted to determine the tolerability of three newly released lines of maize to saline conditions when primed with ethylene diamine tetraacetic acid (EDTA) and salicylic acid (SA) each at 1.0 M concentration; seeds primed with distilled water were used as control. Concentrations of 0, 50, 100, 150 and 300 mM NaCl were tested. The experiment followed a 3x3x5 factorial arrangement of treatments with three replications. The results revealed significant interaction between maize lines and salinity where the germination percentage of line SWAN-LSR-Y was much more affected than the other lines at the salinity level of 50 mM, and its speed of germination was more affected than the others when passing from 150 to 300 mM NaCl. The seedling lengths (radicle and plumule) and seed vigor index were influenced by significant interaction between the primer and salinity, where EDTA enhanced better seedling growth than the other primers when the salinity did not exceed 150 mM. OMR-LSR-SY maize line did not show tolerability at this concentration. Similarly, EDTA and SA treated maize lines showed lower accumulation of reactive oxygen species such as superoxide anion radical (O2-), hydrogen peroxide (H2O2), as well as a decrease in the malondialdehyde (MDA) contents, most importantly in SWAN-LSR-Y and BR9928-OMR-SR-Y maize lines. Catalase (CAT) and superoxide dismutase (SOD) activities were enhanced in SWAN-LSR- Y and BR9928-OMR-SR-Y upon application of EDTA.

show abstract

“…Drought stress can affect the antioxidant capacity of cotton leaves. Consequently, AsA and GSH content increases under drought stress, and the ability of the AsA-GSH cycle to eliminate ROS is weakened ( Raja et al., 2021 ). In salt-treated soybeans, malondialdehyde (MDA), hydrogen peroxide (H 2 O 2 ), catalase (CAT), MDHAR, and DHAR content increases as salt levels increase ( Rahman et al., 2021 ).…”

Section: Introductionmentioning

confidence: 99%

Lead exposure dose-dependently affects oxidative stress, AsA-GSH, photosynthesis, and mineral content in pakchoi (Brassica chinensis L.)

Tan

Wu²,

Xuan³

et al. 2022

Front. Plant Sci.

View full text Add to dashboard Cite

Lead (Pb) is a heavy metal pollutant and negatively affects agriculture and ecosystems. Pb can cause oxidative stress and abnormal plant growth. The ascorbic acid-glutathione (AsA-GSH) cycle mainly exists in chloroplasts and resists oxidative stress, scavenges reactive oxygen radicals, and maintains normal photosynthesis. However, the dosage related effects of Pb on pakchoi photosynthesis, via oxidative stress and the AsA-GSH system, remains unclear. In this study, various Pb dosage stress models were tested (low: 300 mg/kg; medium: 600 mg/kg; high: 900 mg/kg). Pb stress induced a dose-dependent increase in Pb content in pakchoi leaves (P < 0.05). Principal component analysis showed that Se, B, and Pb were significantly and negatively correlated. Pb stress also increased MDA content and decreased antioxidant enzymes SOD, GSH-Px, and T-AOC activities (P < 0.05). We also found that Vc content, as well as the GSH/GSSG ratio, decreased. Additionally, Pb stress destroyed chloroplast structure, decreased photosynthesis indicators Pn, Tr, Gs, Ci and VPD, and attenuated Fv/Fm and Fv/Fo (P < 0.05). In the high-dose group, the contents of chlorophyll a, chlorophyll b, and carotenoids decreased significantly, while the expression of chloroplast development genes (GLK, GLN2) decreased (P < 0.05). Our data suggest that Pb stress leads to dosage-dependent, aberrant photosynthesis by inhibiting the AsA-GSH system in pakchoi. This study expands the Pb toxicology research field and provides indications for screening antagonists.

show abstract

Pyramiding ascorbate–glutathione pathway in Lycopersicum esculentum confers tolerance to drought and salinity stress

Cited by 36 publications

References 71 publications

Comparative Metabolic Study of Two Contrasting Chinese Cabbage Genotypes under Mild and Severe Drought Stress

Comparative Metabolic Study of Two Contrasting Chinese Cabbage Genotypes under Mild and Severe Drought Stress

Effects of priming on germination and biochemical attributes of three maize lines under saline condition

Lead exposure dose-dependently affects oxidative stress, AsA-GSH, photosynthesis, and mineral content in pakchoi (Brassica chinensis L.)

Contact Info

Product

Resources

About