Effects of Heavy Metals and<i>Meloidogyne hapla</i>on Celery Grown on Organic Soil Near a Nickel Refinery

Bisessar, S.

doi:10.1094/pd-67-11

Cited by 17 publications

(4 citation statements)

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“…Further, MSW composts loaded in a wide ranging of plant nutrients can considerably improve the plant development [ 47 ]. Bisessar [ 48 ] reported that the decrease in shoots and roots was suppressing both dry matter production and seed yield. The drop in seed yield after applying heavy metals has been accredited to the toxic effects of metals on the propagation of roots and shoots [ 49 ].…”

Section: Discussionmentioning

confidence: 99%

Fertilizers and Mixed Crop Cultivation of Chromium Tolerant and Sensitive Plants under Chromium Toxicity

Dheeba

Sampathkumar

Kannan

2015

Journal of Toxicology

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Zea mays (maize) and Vigna radiata (green gram) are found to be the chromium (Cr) tolerant and sensitive plants, respectively. In the present paper, we investigate the reduction of the toxicity of Cr in the sensitive plants by the mixed crop cultivation in the field using various amendments. Further, the potassium dichromate was used as the source of hexavalent Cr. The results indicated that Cr adversely affects both the growth and yield of plants. The soil properties vary with Cr and different fertilizer amendments and the yield of both plants were affected by Cr. We conclude that metal accumulation of seeds of green gram was higher than corn and the application of single fertilizer either farm yard manure (FYM) or nitrogen, phosphorous, and potassium (NPK) enhances the growth and yield of both the tolerant and sensitive plants in the mixed crop cultivations.

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Section: Discussionmentioning

confidence: 99%

Fertilizers and Mixed Crop Cultivation of Chromium Tolerant and Sensitive Plants under Chromium Toxicity

Dheeba

Sampathkumar

Kannan

2015

Journal of Toxicology

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“…The reduction in seed yield following heavy metal application has been attributed to the effects of metals on the proliferation of roots and shoots (Ibekwe et al, 1996). The reduction in roots and shoots then led to the suppressive effect on dry matter production, and consequently the seed yield (Bisessar et al, 1983).…”

Section: Seed Yieldmentioning

confidence: 99%

Cadmium, chromium and copper in greengram plants

Wani

Khan

Zaidi

2007

Agron. Sustain. Dev.

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Soils contaminated with heavy metals including cadmium, chromium and copper present a major concern for sustainable agriculture. We studied the effects of cadmium, chromium and copper used both separately and as mixtures, on plant growth, nodulation, leghaemoglobin, seed yield and grain protein in seeds, in greengram inoculated with Bradyrhizobium sp. (Vigna). Cadmium at 24 mg kg −1 of soil reduced the dry matter accumulation and number of nodules by 27 and 38%, respectively. Chromium at 136 mg kg −1 of soil increased the dry phytomass and nodule numbers by 133 and 100%, respectively. The average maximum increase of 74% in seed yield occurred at 136 mg Cr kg −1 of soil. Cadmium and copper at 24 and 1338 mg kg −1 soil decreased the seed yield by 40 and 26%, respectively. Chromium at 136 kg −1 of soil increased the root and shoot N and leghaemoglobin content by 42, 31% and 50%, respectively. In contrast, the root and shoot N decreased by 22% at 24 mg Cd kg −1 of soil, while a maximum decrease of 50% in leghaemoglobin content occurred at 12 and 669 and 24 and 1338 mg Cd with Cu kg −1 of soil, relative to the control. The average maximum grain protein (283 mg g −1 ) was observed at 136 mg Cr kg −1 of soil, while minimum grain protein (231 mg g −1 ) was recorded at 24 and 1338 mg kg −1 of cadmium with copper. The metal accumulation in roots and shoots at 50 days after sowing and in grains 80 days after seeding differed among treatments. The degree of toxicity of heavy metals to the measured parameters decreased in the order Cd > Cu > Cr.heavy metals / Bradyrhizobium / greengram / phyto-accumulation

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“…In this study, the seed yield declined following zinc application to soils, possibly due to the effects of zinc on the proliferation of roots and shoots (Ibekwe et al, 1996). The reduction in roots and shoots in turn might have a suppressive effect on dry matter production and consequently on seed yield (Bisessar et al, 1983). In contrast, the plants grown in the presence of a bioinoculant increased the seed yield and seed protein consistently.…”

Section: Seed Yield Grain Protein and N Contentmentioning

confidence: 60%

Impact of zinc-tolerant plant growth-promoting rhizobacteria on lentil grown in zinc-amended soil

Wani

Khan

Zaidi

2008

Agron. Sustain. Dev.

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Though zinc is a plant nutrient at low levels, Zn ions can be highly phytotoxic at higher concentrations found in contaminated soils. Plant growth-promoting rhizobacteria can be used to decrease this toxicity. Indeed, in addition to their role in plant-growth promotion, rhizobacteria also reduce the toxicity of heavy metals. In turn, they can be effective for crops grown in metal-contaminated soils. Here, we isolated a zinc-tolerant plant growth-promoting rhizobacterium, Rhizobium species RL9, from a zinc-contaminated soil and assayed its plant growth-promoting activities in vitro. We found that the rhizobacterium strain RL9 tolerated zinc up to a concentration of 400 µg mL −1 on yeast extract mannitol agar medium. It produced 33 µg mL −1 of indole acetic acid in Luria Bertani broth at 100 µg mL −1 of tryptophan and was positive for siderophore, hydrogen cyanide and ammonia. Such phytohormones released by this strain could help in promoting the growth of legumes. We further tested the effect of rhizobacterium strain RL9 on lentils grown in zinc-amended soil. We found that when the rhizobacterium strain RL9 was added to soil contaminated with Zn at 4890 mg/kg, lentil dry matter increased by 150%, nodule numbers by 15%, nodule dry mass by 27%, leghaemogloblin by 30%, seed yield by 10% and grain protein by 8%, compared with uninoculated plants. We also found that the concentration of zinc was higher in uninoculated plant organs than in the inoculated counterpart. Our findings thus suggest that rhizobacterium strain RL9 could be exploited for bacteria-assisted reduction of zinc toxicity in zinc-contaminated soils due to its intrinsic abilities of expressing growth-promoting substances and reduction of the toxic effects of zinc. lentil / zinc tolerance / zinc uptake / plant-growth promotion

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Effects of Heavy Metals andMeloidogyne haplaon Celery Grown on Organic Soil Near a Nickel Refinery

Cited by 17 publications

References 0 publications

Fertilizers and Mixed Crop Cultivation of Chromium Tolerant and Sensitive Plants under Chromium Toxicity

Fertilizers and Mixed Crop Cultivation of Chromium Tolerant and Sensitive Plants under Chromium Toxicity

Cadmium, chromium and copper in greengram plants

Impact of zinc-tolerant plant growth-promoting rhizobacteria on lentil grown in zinc-amended soil

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