Proline and glycine betaine modulate cadmium‐induced oxidative stress tolerance in plants

Hossain, Mohammad Anwar; Burritt, David J.; Fujita, Masayuki

doi:10.1002/9781119081005.ch6

Cited by 10 publications

(3 citation statements)

References 220 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The enzymatic and non-enzymatic components work together to neutralize toxic ROS in antioxidant systems of plants. Osmolytes like free proline, sugars and amino acids help to sustain the water level to regulate cellular metabolism and functionality (Hossain et al 2015). Secondly, the plants respond to abiotic stress through changes in some major metabolic pathways such as photosynthesis, TCA cycle and (Lewis et al 2001;Rai 2002;Lotfi et al 2010).…”

Section: Introductionmentioning

confidence: 99%

Bacillus megaterium strain A12 ameliorates salinity stress in tomato plants through multiple mechanisms

Akram

Aslam

Ahmad

et al. 2019

Journal of Plant Interactions

View full text Add to dashboard Cite

Plants must cope with the stress conditions to survive. Plant growth promoting rhizobacteria can improve plant growth either directly or indirectly under stress conditions. However, the possible mechanisms remain unclear. Here we report that Bacillus megaterium strain A12 (BMA12) maintains hormonal and redox homeostasis and restores the photosynthetic efficacy of tomato plants through multiple mechanisms to survive under salinity stress conditions. Tomato plants were cocultivated with BMA12 under saline conditions. The application of BMA12 significantly increased plant growth and photosynthetic capacity. BMA12 decreased production of ROS and ethylene but increased expression levels of selected genes responsible for repairing of damaged photosynthetic apparatus and maintenance of redox homeostasis. Furthermore, BMA12 significantly altered metabolic profile to restore perturbations of tomato plant physiology impaired with salinity stress. This study proves that BMA12 can be used in the conventional agriculture system in the salinity effected fields.

show abstract

Section: Introductionmentioning

confidence: 99%

Bacillus megaterium strain A12 ameliorates salinity stress in tomato plants through multiple mechanisms

Akram

Aslam

Ahmad

et al. 2019

Journal of Plant Interactions

View full text Add to dashboard Cite

show abstract

“…The non-application of P reduced the levels of total amino acids, while inoculation with B. velezensis + OF increased these levels. Osmolytes, such as sugars and amino acids, help sustain the water level and regulate cellular metabolism and functionality [48]. The current research showed that the increase in amino acid concentration was significant in inoculated plants.…”

Section: Discussionmentioning

confidence: 58%

Bacillus velezensis Associated with Organomineral Fertilizer and Reduced Phosphate Doses Improves Soil Microbial—Chemical Properties and Biomass of Sugarcane

et al. 2022

View full text Add to dashboard Cite

Appropriately using phosphorus (P) for the fertilization of sugarcane is critical to achieving high productivity because it is one of the most limiting nutrients in agricultural cropping systems. Thus, the objective of this research was to evaluate the morphological, biochemical, and yield responses of sugarcane, and the soil microbial–chemical properties, under the use of organomineral fertilizer (OF) associated or not with Bacillus velezensis strain UFV 3918 (B) combined with mono ammonium phosphate (MAP) doses. The experimental design used was completely randomized, consisting of eight treatments [Control (3/3 MAP); OF (without MAP); OF + 1/3 MAP; OF + 2/3 MAP; OF + 3/3 MAP; B + OF + 1/3 MAP; B + OF + 2/3 MAP; B + OF + 3/3 MAP] and four replicates. B + OF + 1/3 MAP provided increases in accumulated soil basal respiration (11.9%), carbon of microbial biomass (35.9%), fluorescein diacetate (12.7%), arylsulfatase (25.5%), and acid phosphatase (10.1%) activity compared to the control, which implied in higher shoot and total biomass. These results present a potential strategy for sugarcane fertilization, using bacteria in combination with OF to improve P nutrition and growth in sugarcane with reduced economic and environmental impact.

show abstract

“…Proline (Pro) is a compatible solute accumulated under several environmental stresses in plants, such as osmotic stress and metal-induced stress, and increased levels of this amino acid have been shown to correlate with enhanced stress tolerance in several plants (Sharma and Dietz, 2006;Hayat et al, 2012;Hossain et al, 2015). The role of Pro in drought and salt stress tolerance has been widely discussed (Hayat et al, 2012;El Moukhtari et al, 2020); however, not so much is known about the contribution of Pro to Cd tolerance in plants.…”

Section: Introductionmentioning

confidence: 99%

Transgenic Medicago truncatula Plants That Accumulate Proline Display Enhanced Tolerance to Cadmium Stress

et al. 2022

View full text Add to dashboard Cite

Cadmium (Cd) accumulation in agricultural soils constitutes a serious problem for crop yields and food safety. It is known that proline (Pro) can rapidly accumulate in plant tissues in response to abiotic stress. To analyze the potential protective effect of Pro accumulation against Cd toxicity, we compared the response to Cd stress of wild-type (WT) Medicago truncatula and a transgenic line that we had previously obtained and characterized (p18), which expressed the Δ1-pyrroline-5-carboxylate synthetase gene from Vigna aconitifolia (VaP5CS), and accumulated high Pro levels. Cadmium significantly reduced germination of WT seeds compared to p18 seeds, and seedling relative root growth, a valid indicator of metal tolerance, was significantly higher for p18 than WT seedlings. We analyzed the relative expression of genes related to Pro metabolism, phytochelatin biosynthesis. antioxidant machinery, and NADPH recycling, which are relevant mechanisms in the response to Cd stress. They presented differential expression in the seedlings of both genotypes both under control conditions and under Cd stress, suggesting that the Cd response mechanisms might be constitutively activated in the transgenic line. Pro accumulation promoted higher survival, enhanced growth performance, and minor nutrient imbalance in transgenic p18 plants compared to WT plants. These facts, together with the recorded gluthatione levels, lipid peroxidation and antioxidant enzyme activities strongly suggested that VaP5CS expression and Pro accumulation conferred enhanced Cd tolerance to M. truncatula p18 plants, which was likely mediated by changes in Pro metabolism, increased phytochelatin biosynthesis and a more efficient antioxidant response. Moreover, p18 roots accumulated significantly higher Cd amounts than WT roots, while Cd translocation to the aerial part was similar to WT plants, thus suggesting that high Pro levels increased not only Cd tolerance, but also Cd phytostabilization by rhizosequestration.

show abstract

Proline and glycine betaine modulate cadmium‐induced oxidative stress tolerance in plants

Cited by 10 publications

References 220 publications

Bacillus megaterium strain A12 ameliorates salinity stress in tomato plants through multiple mechanisms

Bacillus megaterium strain A12 ameliorates salinity stress in tomato plants through multiple mechanisms

Bacillus velezensis Associated with Organomineral Fertilizer and Reduced Phosphate Doses Improves Soil Microbial—Chemical Properties and Biomass of Sugarcane

Transgenic Medicago truncatula Plants That Accumulate Proline Display Enhanced Tolerance to Cadmium Stress

Contact Info

Product

Resources

About