Physiological explanation of herbicide tolerance in Azolla pinnata R.Br.

De, Arnab Kumar; Sarkar, Bipul; Adak, Malay Kumar

doi:10.1016/j.aasci.2017.05.021

Cited by 5 publications

(2 citation statements)

References 20 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Herbicide, in different forms, is a serious bottleneck to fertility and disturbs soil micro flora (Wani et al, 2012). In our earlier reports 2,4-D can be hyperaccumulated and transformed chemically into less toxic moiety in Azolla species (De et al, 2017). Therefore, the responses of this species to gene expression would manifest the possible bio indication of herbicidal toxicity.…”

Section: Discussionmentioning

confidence: 88%

“…Therefore, under changing 2,4-D concentrations that disturb the cellular redox may accumulate some bio molecules inducing oxidative stress (Biswal et al, 2011). In our earlier studies Azolla has been reported as a hyperaccumulater of 2,4-D and can quench residual herbicides by antioxidation (De et al, 2017). Herbicide, in different forms, is a serious bottleneck to fertility and disturbs soil micro flora (Wani et al, 2012).…”

Section: Discussionmentioning

confidence: 99%

See 1 more Smart Citation

Physiological characterization of NADP-malic enzyme activity under 2,4-D toxicity in an aquatic fern, Azolla pinnata R.Br.

De¹,

Sarkar²,

Saha³

et al. 2018

Afr. J. Plant Sci.

View full text Add to dashboard Cite

This work proposes NADP-ME activity as bio-indices for herbicidal sensitivity in Azolla pinnata R.Br. under 2,4-D toxicity. Azolla fronds were illuminated under saturated photosynthetic flux and bicarbonate induction. There was significant variation in the NADP-ME activity under light and dark conditions. This increased more when varying concentrations of 2,4-D were used for the up regulation of enzyme activity especially under illumination. There was evident modulation through activators (citrate and succinate) and inhibitors (pyruvate and oxaloacetate) under light and dark conditions at 2,4-D concentration. This occurs at the same time in overriding the herbicidal stress linked to the adjustment of the cellular redox of regulatory sites using dithiothreitol. This shows that Azolla can quench 2,4-D, which suggests NADP-ME as a biomarker through its sensitivity and mode of activities under xenobiotic contaminated soil.

show abstract

Section: Discussionmentioning

confidence: 88%

Section: Discussionmentioning

confidence: 99%

Physiological characterization of NADP-malic enzyme activity under 2,4-D toxicity in an aquatic fern, Azolla pinnata R.Br.

De¹,

Sarkar²,

Saha³

et al. 2018

Afr. J. Plant Sci.

View full text Add to dashboard Cite

show abstract

Modulation of physiological responses with TiO2 nano-particle in Azolla pinnata R.Br. under 2,4-D toxicity

Ghosh

Debnath

et al. 2018

Mol Biol Rep

View full text Add to dashboard Cite

The present work is emphasised with the herbicidal tolerance of Azolla pinnata R.Br. and its modulation with TiO nano-particle. Both carbohydrate and nitrogen metabolism were effected with 2,4-D as herbicide and in few cases TiO-NP had recovered few detrimental effects. From the nutrient status in Azolla it recorded the recovery of nitrogen as well as potassium by TiO-NP but not in case of phosphorus. However, a conversion of nitrate to ammonium was more induced by TiO-NP under herbicidal toxicity. Similar results were obtained for inter-conversion of amino acid-nitrate pool, but no changes with glutamine synthase activity with TiO-NP. Initially, the effects of 2,4-D was monitored with changes of chlorophyll content but had not been recovered with nanoparticle. Photosynthetic reserves expressed as both total and reducing sugar were insensitive to TiO-NP interference but activity of soluble and wall bound invertase was in reverse trend as compared to control. The 2,4-D mediated changes of redox and its oxidative stress was ameliorated in plants with over expressed ADH activity. As a whole the Azolla bio system with TiO supplementation may be useful in sustenance against 2,4-D toxicity through recovery of nitrogen metabolism. Thus, Azolla-TiO-NP bio system would be realised to monitor the herbicidal toxicity in soil and its possible bioremediation.

show abstract

Moderation of physiological responses in rice plants with Azolla under 2,4-Dichlorophenoxy acetic acid stress

Ghosh

Biswas

et al. 2018

Mol Biol Rep

View full text Add to dashboard Cite

Physiological explanation of herbicide tolerance in Azolla pinnata R.Br.

Cited by 5 publications

References 20 publications

Physiological characterization of NADP-malic enzyme activity under 2,4-D toxicity in an aquatic fern, Azolla pinnata R.Br.

Physiological characterization of NADP-malic enzyme activity under 2,4-D toxicity in an aquatic fern, Azolla pinnata R.Br.

Modulation of physiological responses with TiO2 nano-particle in Azolla pinnata R.Br. under 2,4-D toxicity

Moderation of physiological responses in rice plants with Azolla under 2,4-Dichlorophenoxy acetic acid stress

Contact Info

Product

Resources

About