Impact of Lead and Cadmium on Enzyme of Citric Acid Cycle in Germinating Pea Seeds

Bansal, Priyanka; Sharma, Pallavi; Goyal, Vinod

doi:10.1023/a:1015173112842

Cited by 38 publications

(8 citation statements)

References 10 publications

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“…2001). Bansal et al. (2002) suggest that the TCA cycle plays an important role in the stress‐resistant response by providing organic acids and energy production.…”

Section: Resultsmentioning

confidence: 99%

Effect of aluminum on variations in the proteins in pineapple roots

Chen

Lin

2010

Soil Science and Plant Nutrition

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Aluminum (Al) is biotoxic, often active in acid soil and retards the growth of crop roots. Cayenne is a type of pineapple cultivar that can be well cultivated in a strongly acid environment containing AlCl 3 concentrations up to 300 lmol L . In addition to organic acids, variations in the proteins in root apices are regarded as the mechanism involved in Al resistance. The objective of the present study was to explore the responsive proteins of Al stress in a known Al-resistant pineapple cultivar (i.e. Cayenne). After root emergence, pineapple seedlings were exposed to hydroponic solutions each containing 0 and 300 lmol L )1 AlCl 3 for 4 weeks. The total proteins in the root apices were separated using 2-D electrophoresis and a total of 17 apparently differential spots were identified by mass spectrometry, with 10 upregulated and seven downregulated proteins. The root apices of Cayenne under Al stress could be characterized by cellular activities involved in, for example, carbohydrate metabolism, organic acid production, energy metabolism, alleviating redox damage and root phenotypical change, which are critical for plant survival under Al toxicity. In contrast, there are one hypothetical and three unknown proteins that play unknown roles in Al resistance and warrant further investigation. The present study may provide an important clue to future proteomic research on Al-resistant mechanisms in pineapple.

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“…2001). Bansal et al. (2002) suggest that the TCA cycle plays an important role in the stress‐resistant response by providing organic acids and energy production.…”

Section: Resultsmentioning

confidence: 99%

Effect of aluminum on variations in the proteins in pineapple roots

Chen

Lin

2010

Soil Science and Plant Nutrition

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“…This harmful effect might be due to one or more of several factors including impairment of membrane integrity with loss of essential nutrients (Powell & Raymond 1981). Thus, heavy metal stress can operate in more ways than one with regard to germinative metabolism (Chugh & Sawhney 1996;Bansal et al 2002;Mihoub et al 2005). …”

Section: Carbohydratesmentioning

confidence: 99%

Biochemical changes and adaptive strategies of plants under heavy metal stress

2011

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Heavy metal contamination of soil, aqueous waste stream and ground water causes major environmental and human health problems. Heavy metals are major environmental pollutants when they are present in high concentration in soil and show potential toxic effects on growth and development in plants. Due to unabated, indiscriminate and uncontrolled discharge of hazardous chemicals including heavy metals into the environment, plant continuously have to face various environmental constraints. In plants, seed germination is the first exchange interface with the surrounding medium and has been considered as highly sensitive to environmental changes. One of the crucial events during seed germination entails mobilization of seed reserves which is indispensable for the growth of embryonic axis. But, metabolic alterations by heavy metal exposure are known to depress the mobilization and utilization of reserve food by affecting the activity of hydrolytic enzymes. Some plants possess a range of potential mechanisms that may be involved in the detoxification of heavy metals by which they manage to survive under metal stress. High tolerance to heavy metal toxicity could rely either on reduced uptake or increase planned internal sequestration which is manifested by an interaction between a genotype and its environment. Such mechanism involves the binding of heavy metals to cell wall, immobilization, exclusion of the plasma membrane, efflux of these toxic metal ions, reduction of heavy metal transport, compartmentalization and metal chelation by tonoplast located transporters and expression of more general stress response mechanisms such as stress proteins. It is important to understand the toxicity response of plant to heavy metals so that we can utilize appropriate plant species in the rehabilitation of contaminated areas. Therefore, in the present review attempts have been made to evaluate the effects of increasing level of heavy metal in soils on the key behavior of hydrolytic and nitrogen assimilation enzymes. Additionally, it also provides a broad overview of the strategies adopted by plants against heavy metal stress.

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“…Shao et al (2011) demonstrated that the activity of ICDH activity was decreased due to reduction in ICDH isozymes under As, Pb, Cd stresses in wheat seedlings. The activity of α-KGDH along with above three enzymes were reduced under heavy metal stress in germinating pea seeds (Bansal et al 2002). Decrease in α-KGDH activity causes depletion in mitochondrial NADH pool that generates ROS and leads to oxidative stress In the study, we observed signi cant decrease in the activities of studied respiratory enzymes viz., PDH, ICDH, α-KGDH, SDH, MDH, CS and increase in fumarase activity in rice seedlings under As(V) stress.…”

Section: In Uence On Krebs Cycle Intermediatesmentioning

confidence: 65%

Comparative study on the influence of silicon and selenium to mitigate arsenic induced stress by modulating TCA cycle, GABA and polyamine synthesis in rice seedlings

Das

Majumder

Biswas

2021

Preprint

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Arsenic contamination of groundwater is a major concern for its use as drinking water and crop irrigation in many regions of the world. Arsenic is absorbed by rice plants from arsenic contaminated water during irrigation, hampers growth and agricultural productivity. The aim of the study was to mitigate the activity of TCA cycle, synthesis of γ-aminobutyric acid (GABA) and polyamines (PAs) in rice (Oryza sativa L. cv. MTU-1010) seedlings under arsenate (As-V) stress [25 µM, 50 µM and 75 µM] by silicon (Si) [2 mM] and selenium (Se) [5 µM] amendments, and to investigate which chemical was more potential to combat this threat. As(V) application decreased the activities of tested respiratory enzymes while the levels of organic acids (OAs) were increased in the test seedlings. Co-application of Si and As(V) increased the activities of respiratory enzymes, consequently further increased accumulation of OAs that were more than Se with As(V) application in the test seedlings. GABA accumulation along with the activities of its regulatory enzymes were enhanced under As(V) stress. During joint application of Si and As(V) and Se and As(V) said parameters were decreased showing defensive role of these chemicals to resist As(V) toxicity in rice but amendment of Si was more potential than Se amendment resulted reduction of stress induced damage in the test seedlings. PAs trigger tolerance mechanism against stress in plants. PAs viz., Putrescine, spermidine and spermine were synthesized more during Si and Se amendments in As(V) contaminated rice seedlings to combat the effect of stress. Si amendment substantially modulated the toxic effects caused by As(V) over Se amendment in As(V) challenged test seedlings. Thus in future application Si enriched fertilizer will be beneficial than application of Se enriched fertilizer to grow rice plants with normal vigor in arsenic contaminated soil.

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Impact of Lead and Cadmium on Enzyme of Citric Acid Cycle in Germinating Pea Seeds

Cited by 38 publications

References 10 publications

Effect of aluminum on variations in the proteins in pineapple roots

Effect of aluminum on variations in the proteins in pineapple roots

Biochemical changes and adaptive strategies of plants under heavy metal stress

Comparative study on the influence of silicon and selenium to mitigate arsenic induced stress by modulating TCA cycle, GABA and polyamine synthesis in rice seedlings

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