Activities of Antioxidative Enzymes, Sulphur Assimilation, Photosynthetic Activity and Growth of Wheat (<i>Triticum aestivum</i>) Cultivars Differing in Yield Potential Under Cadmium Stress

Khan, Nafees A.; Singh, Sunil Kumar; Nazar, Rahat

doi:10.1111/j.1439-037x.2007.00272.x

Cited by 208 publications

(113 citation statements)

References 60 publications

(97 reference statements)

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…As observed in the present study, the growth inhibition may be consequence of Cd interference with the vital metabolic processes such as photosynthesis and translocation of photosynthetic products and essential nutrients. 4,10,[22][23][24] Cd stress significantly reduced the photosynthetic characteristics, such as P N , gs, CA activity and Chl content. The extent of reduction in photosynthetic characteristics was found to be higher in RH30 among all cultivars.…”

Section: Resultsmentioning

confidence: 96%

“…Previous studies have also reported reduction in photosynthesis under Cd stress. 4,19,22,25 Siedlecka et al reported that Cd affects photosynthesis by inhibiting different reaction steps of Calvin-cycle. Significant reduction in net photosynthetic rate, stomatal conductance, Rubisco activity, CA activity and chlorophyll content was noted in the presence of Cd.…”

Section: Introductionmentioning

confidence: 99%

“…Significant reduction in net photosynthetic rate, stomatal conductance, Rubisco activity, CA activity and chlorophyll content was noted in the presence of Cd. 10,19,22,27,28 Cd is found to inhibit Chl biosynthesis by means of a reaction with the thiol groups of the enzymes of 5-aminolevulinic acid synthesis and protochlorophyllide reductase complex. 29 Substitution of Mg 2+ ion of the Chl molecule by Cd, Cu, Zn, Pb, Ni, Zn or Hg may be reason of arrested photosynthesis.…”

Section: Introductionmentioning

confidence: 99%

“…Cd treatment decreased the seed yield by 32.47% in Alankar and 52.68% in RH30 in comparison with the control ( Cd stress affects growth and yield through disturbances in several morpho-physiological processes and nutrient uptake. 4,22 Wahid and Ghani 31 reported significant reduction in number of pods per plant and seeds per pod, 100-seed weight, seed yield and harvest index of Vigna radiata genotypes as a result of Cd toxicity. Wu et al 32 reported reduction in yield of three cotton genotypes under Cd stress and found that the reduction in yield was proportional to Cd accumulation.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Differential cadmium stress tolerance in five Indian mustard (Brassica junceaL.) cultivars

Gill

Khan

Tuteja

2011

Plant Signaling & Behavior

140

View full text Add to dashboard Cite

IntroductionAgricultural soils worldwide are slightly to moderately contaminated with toxic heavy metals that restrict the crop plants to reach their full genetic potential and cause significant loss by reducing the crop productivity. 1 Among heavy metals, Cd is a non-essential and most deleterious heavy metal pollutant commonly released into the arable soil from various industrial, mining and farming practices, 2 and has been ranked No. 7 among the top 20 toxins which affect the human health by entering in the food chain. 3,4 Although Cd is a highly phytotoxic metal, it is easily taken up by plant roots growing on Cd-contaminated soils and transported to above ground plant parts. 5-7 The regulatory limit of Cd in agricultural soils is 100 mg Cd kg -1 soil, 8 but this threshold is continuously increasing because of anthropogenic and industrial activities. Plants growing on Cd contaminated soil result in Cd accumulation in all plant parts, which inhibits plant growth, affect nutrient uptake, alters the chloroplast ultrastructure, inactivates enzymes of CO 2 fixation, inhibits photosynthesis and induces lipid peroxidation and antioxidant machinery. 4,[9][10][11] However, Cd is a non redox-active metal, but it induces the generation of reactive oxygen species (ROS) including superoxide radical (O 2•-), hydrogen peroxide (H 2 O 2 ) and hydroxyl radicalThe presence of cadmium (cd) in the agricultural soils affects horticultural cultivars and constrains the crop productivity. a pot experiment was performed using five cultivars of mustard (Brassica juncea L.) to evaluate the difference in their response to cd toxicity under greenhouse conditions. The pots containing reconstituted soil were supplied with different concentration of cdcl 2 (0, 25, 50, 100 or 150 mg cd kg -1 soil). Increasing concentration of cd in the soil resulted in decreased growth, photosynthesis and yield. Maximum significant reduction in growth, photosynthesis and yield were observed with 150 mg cd kg -1 soil in all the cultivars. Our results indicate that the cultivar alankar is found to be more tolerant to cd stress, recording higher plant dry mass, net photosynthesis rate, associated with high antioxidant activity and low cd content in the plant leaves and thus less oxidative damage. cultivar rh30 experienced maximum damage in terms of reduction in growth, photosynthesis, yield characteristics and oxidative damage and emerged as sensitive cultivar. The data of tolerance index of alankar were found to be higher among all tested mustard cultivars which indicate its higher tolerance to cd. Better coordination of antioxidants protected alankar from cd toxicity, whereas lesser antioxidant activity in rh30 resulted in maximum damage. cultivars of mustard were ranked with respect to their tolerance to cd: alankar > Varuna > Pusa Bold > Sakha > rh30, respectively.Differential cadmium stress tolerance in five indian mustard (Brassica juncea L.) cultivars

show abstract

Section: Resultsmentioning

confidence: 96%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Differential cadmium stress tolerance in five Indian mustard (Brassica junceaL.) cultivars

Gill

Khan

Tuteja

2011

Plant Signaling & Behavior

140

View full text Add to dashboard Cite

show abstract

“…Cadmium exposure significantly affected essential ions in roots and shoots has been explored in rice (Liu et al, 2003), wheat , barley (Wu and Zhang, 2002) and lettuce (Monteiro et al, 2009). These mineral nutrients also have specific of defensive role against lethal effects of Cd (Khan et al, 2007).…”

Section: Introductionmentioning

confidence: 99%

Alleviating Effect of Exogenous Application of Ascorbic Acid on Growth and Mineral Nutrients in Cadmium Stressed Barley (Hordeum vulgare) Seedlings

Ullah¹,

Javed²,

Wahid³

et al. 2015

IJAB

View full text Add to dashboard Cite

An experiment was carried out in sand-filled pots under normal temperature (28±2ºC) to assess the role of exogenously applied ascorbic acid in alleviating the effect of cadmium (Cd) stress on four barley (Hordeum vulgare L.) genotypes (Jau-83, Jau-87, Paidar 91 and Haider 93). After germination, seedlings were exposed to different Cd concentrations (0, 100, 300, 500 and 700 µM CdCl2) along with AsA (200 mg L -1 ) and grown for 15 days. The results suggested that exposure to increased Cd levels caused a significant reduction in growth and mineral nutrients contents of barley seedlings. However, there was a noticeable difference in the effect of Cd on mineral concentrations among genotypes and the difference mainly coincided with differential accumulation of Cd in the shoot and root tissues. When AsA was applied to Cd-stressed plants, it decreased Cd accumulation in shoots and roots and also showed partial reversal of Cd stress effects. It was also observed that at the same Cd concentrations Cd tolerance index of Jau-83 was the highest among the four barley genotypes, indicating that Jau-83 had lower Cd contents in roots may be more tolerant to Cd stress. The application of AsA was effective in reducing the toxicity of increased Cd by reducing the root or shoots Cd contents, as well as by improving the seedling growth attributes and the mineral nutrients in barley.

show abstract

Involvement of Sulfur in the Regulation of Abiotic Stress Tolerance in Plants

Samanta

Singh

Roychoudhury

2020

Protective Chemical Agents in the Amelioration of Plant Abiotic Stress

View full text Add to dashboard Cite

Activities of Antioxidative Enzymes, Sulphur Assimilation, Photosynthetic Activity and Growth of Wheat (Triticum aestivum) Cultivars Differing in Yield Potential Under Cadmium Stress

Cited by 208 publications

References 60 publications

Differential cadmium stress tolerance in five Indian mustard (Brassica junceaL.) cultivars

Differential cadmium stress tolerance in five Indian mustard (Brassica junceaL.) cultivars

Alleviating Effect of Exogenous Application of Ascorbic Acid on Growth and Mineral Nutrients in Cadmium Stressed Barley (Hordeum vulgare) Seedlings

Involvement of Sulfur in the Regulation of Abiotic Stress Tolerance in Plants

Contact Info

Product

Resources

About