Effect of arsenic on δ-aminolevulinic acid formation in greening maize leaf segments

Jain, Meeta; Thapa, Menka; Pradhan, Prachi; Meena, Seema; Vaishnav, Jayesh; Gadre, Rekha

doi:10.1007/s40502-015-0158-3

Cited by 4 publications

(2 citation statements)

References 18 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The concentration of Urogen III increased and was higher than that in the control group under combined stress, which further confirmed that the chlorophyll concentration was less inhibited by heavy metals. This effect may ensure that the inhibition of photosynthesis is reduced when the plant is exposed to environmental stress [49,50]. However, these findings differ from those of Li et al [51], which may result from differences between species, or the enzymes involved may be highly resistant to heavy metal stress [52].…”

Section: Plos Onementioning

confidence: 99%

Response of photosynthesis to different concentrations of heavy metals in Davidia involucrata

et al. 2020

View full text Add to dashboard Cite

Lead (Pb) and cadmium (Cd) are highly toxic and are widespread in agricultural soils, representing risks to plant and human health. In this study, Davidia involucrata was cultivated in soil with different concentrations of Pb and Cd and sampled after 90 days. We used ANOVA to analyse the photosynthesis of D. involucrata and the ability of Pb and Cd to enrich and migrate in roots, stems and leaves. Various results are described here. 1) Under individual and combined Pb and Cd stress, the accumulation factors in the roots were greater than 1, which was significantly greater than those in the stems and leaves (P < 0.05), and the translocation factors both were less than 1. The Pb and Cd enrichment ability of D. involucrata roots was significantly higher than that of stems and leaves, and the migration ability of the two heavy metals in D. involucrata was weak. 2) The Mg-dechelatase activities of chlorophyll degradation products increased under stress due to high concentrations of Pb and Cd. However, chlorophyllase activity was higher at relatively low concentrations of the two heavy metals (P < 0.05). δ-Aminolevulinic acid and porphobilinogen of chlorophyll synthesis products are easily converted to uroporphyrinogen III under low concentrations of Cd, which promotes the synthesis of chlorophyll.3) The effect of Cd stress alone on the chlorophyll concentration was not significant. Under combined stress, concentrations of Pb and Cd in the range of 400~800 mg�kg -1 and 5~20 mg�kg -1 significantly promoted an increase in photosynthetic pigments (P < 0.05). 4) Inhibition of the net photosynthetic rate increased with increasing Pb and Cd concentrations under both individual and combined stress. In addition, the root of D. involucrata had a strong absorption and fixation effect on heavy metals, thereby reducing metal toxicity and improving the tolerance of D. involucrata to heavy metals. , et al. (2020) Response of photosynthesis to different concentrations of heavy metals in Davidia involucrata. PLoS ONE 15(3): e0228563.

show abstract

Section: Plos Onementioning

confidence: 99%

Response of photosynthesis to different concentrations of heavy metals in Davidia involucrata

et al. 2020

View full text Add to dashboard Cite

show abstract

“…The loss of chlorophylls in plants under As stress can be generated by degradation due to ROS-induced oxidative damage, nutritional imbalance or the increase in the activity of chlorophyllase (Ozturk et al 2010;Singh et al 2016). Also, As displays an inhibitory effect on chlorophyll biosynthesis through depletion of substrates and thiol group modulation of -SHdependent enzymes (Jain et al 2015). The chlorophyll a/b ratio decreased in As-exposed plants; however, it was recovered by JA at 100 µM (Fig.…”

Section: Resultsmentioning

confidence: 98%

Exogenous jasmonic acid enhances oxidative protection of Lemna valdiviana subjected to arsenic

et al. 2020

View full text Add to dashboard Cite

Oxidative damage is one of the most harmful effects arising from arsenic (As) toxicity in plants. Herein, the role of exogenous jasmonic acid (JA) in the modulation of As-induced oxidative stress in Lemna valdiviana was investigated. Plants were grown for 24 h in Clark's nutritive solution containing As (4.0 mg L −1) or As + JA (50, 100, 250 and 500 µM). Chlorophyll a and b content decreased under As stress, either in isolation or associated with JA. The decreased chlorophyll a/b ratio in As-exposed plants was recovered by JA treatment at 100 µM. The carotenoid content was higher in plants exposed to As compared to controls and lower when it was associated with JA. Arsenic triggered the accumulation of O 2 •− and H 2 O 2 , in addition to severely increasing lipid peroxidation. Application of JA in As-grown plants resulted in lower O 2 •− content and lipid peroxidation than in those grown under As alone, as a result of enhanced SOD activity. On the other hand, H 2 O 2 accumulation was increased by JA in As-stressed plants, associated with higher CAT, POX and GPX activity. The As content and bioaccumulation factor (BF) were improved by application of JA in the nutritive solution at 250 and 500 µM. Our findings indicate that JA modulates the pigment balance, thereby fine-tuning energy dissipation as well as alleviating As-induced oxidative damage in L. valdiviana through modulation of ROS homeostasis and improvement of the antioxidant enzymatic system, allowing increased accumulation of As without showing major damage.

show abstract

Reduction of arsenic accumulation in rice grain by endophytic fungus Serendipita indica

et al. 2023

View full text Add to dashboard Cite

Effect of arsenic on δ-aminolevulinic acid formation in greening maize leaf segments

Cited by 4 publications

References 18 publications

Response of photosynthesis to different concentrations of heavy metals in Davidia involucrata

Response of photosynthesis to different concentrations of heavy metals in Davidia involucrata

Exogenous jasmonic acid enhances oxidative protection of Lemna valdiviana subjected to arsenic

Reduction of arsenic accumulation in rice grain by endophytic fungus Serendipita indica

Contact Info

Product

Resources

About