Increased antioxidative capacity in maize calli during and after oxidative stress induced by a long lead treatment

Zacchini, Massimo; Rea, Elvira; Tullio, Monica; Agazio, M. de

doi:10.1016/s0981-9428(02)00008-6

Cited by 54 publications

(35 citation statements)

References 32 publications

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“…The induction of POD was a normal response of higher plants subjected to toxic amounts of heavy metals (Prasad 1997). The enhancement of POD activity has been observed in various species when the toxic dose of Pb and/or other heavy metals was added (Van Assche et al 1988;Chakravarty and Srivastava 1997), e.g., in Arabidopsis thaliana (Lummerzheim et al 1995), rice plants (Verma and Dubey 2003), and maize calli (Zacchini et al 2003). The POD induction showed a good positive correlation with the content level of heavy metals in plant tissue and with the inhibition degree of plant growth (Van Assche et al 1988;Reddy et al 2005).…”

Section: Discussionmentioning

confidence: 98%

Antioxidative responses related to H2O2 depletion in Hypnum plumaeforme under the combined stress induced by Pb and Ni

Sun

He²,

Cao³

et al. 2009

Environ Monit Assess

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The short-term responses of H(2)O(2)-depletion-related parameters in moss Hypnum plumaeforme to the combined stress induced by Pb and Ni were investigated. The results showed that the Pb and Ni stress induced dose-dependent accumulation of hydrogen peroxide (H(2)O(2)). The increase of peroxidase (POD) activity and decrease of ascorbate peroxidase (APX) activity were observed under the combined heavy metal application. The antioxidants, ascorbate (AsA) and proline content, increased significantly when the metals were applied together. The study indicated that the cell damage caused by Pb stress was higher than that caused by Ni stress, Pb and Ni had synergistic effect in inducing the oxidative stress in moss H. plumaeforme, especially under the combination of high concentration of Ni (0.1 and 1.0 mM) and Pb. Content of proline, H(2)O(2) and the activity of POD, all showed a dose-dependent increase under Pb and Ni stress, suggesting their practical value as biomarkers in moss biomonitoring, especially in the case of light pollution caused by heavy metals without the changes in the appearance of mosses.

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Section: Discussionmentioning

confidence: 98%

Antioxidative responses related to H2O2 depletion in Hypnum plumaeforme under the combined stress induced by Pb and Ni

Sun

He²,

Cao³

et al. 2009

Environ Monit Assess

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“…8), which suggesting its important role in the detoxification of H 2 O 2 (Weckx and Clijsters 1996). The induction of POD was a general response of higher plants subjected to toxic amounts of metals (Prasad 1997) and has been observed after application of toxic doses of Pb and/ or other heavy metals (Van Assche et al 1988;Chakravarty and Srivastava 1997) in various species, such as Arabidopsis thaliana (Lummerzheim et al 1995), rice plants (Verma and Dubey 2003), and Maize calli (Zacchini et al 2003). POD induction correlated with the content of heavy metals in the plant tissues and with the degree of growth inhibition (Reddy et al 2005;Van Assche et al 1988).…”

Section: Discussionmentioning

confidence: 99%

Response mechanisms of antioxidants in bryophyte (Hypnum plumaeforme) under the stress of single or combined Pb and/or Ni

Sun

Cao

et al. 2008

Environ Monit Assess

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The short-term responses and mechanisms of antioxidants in moss Hypnum plumaeforme subjected to single or combined Pb and/or Ni stress has been revealed in this study, in order to clarify (1) the relationship between the stress intensity and antioxidant fluctuation, (2) the difference between single and combined stress, and (3) the possibility of biomonitoring by the application of antioxidant fluctuation under stress. The results showed that the stress induced dose dependent formation of reactive oxygen species (ROS) and subsequent lipid peroxidation. Total chlorophyll (Chl) content and superoxide dismutase (SOD) activity were initiated under lower stress but were inhibited under higher stress. Both single and combined stress decreased catalase (CAT) activity but increased peroxidase (POD) activity, indicating POD in the moss played an important role in resisting the oxidative stress induced by Pb and Ni. The accumulation of (.)O2(-) and H2O2 in H. plumaeforme was respectively related to the low activity of SOD and the decreased activity of CAT. The study indicated that Pb and Ni had synergistic effect in inducing the oxidative stress in moss H. plumaeforme, especially under the combination of high concentration of Ni (0.1, 1.0 mM) and Pb. POD and CAT activity, as well as H2O2 and MDA content, which increased or decreased regularly with a dose dependent under Pb and Ni stress, could be used as an effective indicator in moss biomonitoring, especially in the case of light pollution caused by heavy metals without the changes in the appearance of mosses.

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“…Furthermore, there is evidence of the participation of amino acids in the response and the adaptation of plants to heavy metals (Sharma and Dietz 2006). As reported for other types of stress, an increase of the three main PAs, Put, Spd and Spm, is commonly described after metal treatment (Zacchini et al 2003, Groppa et al 2007. Despite numerous studies, the mechanisms involved in Cd accumulation and detoxification in ⎯⎯⎯⎯ willows and poplars are not yet well described.…”

Section: ⎯⎯⎯⎯mentioning

confidence: 99%

Cadmium accumulation and tolerance in Populus nigra and Salix alba

Zacchini¹,

Iori²,

Mugnozza³

et al. 2011

Biologia plant.

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Rooted cuttings of Populus nigra L. clone Poli and Salix alba L. clone SS5 were treated for three weeks with 50 μM CdSO 4 in nutrient solution. The willow showed a far higher Cd tolerance, expressed as tolerance index (Ti), than the poplar in both roots and leaves. The root Cd content was higher in poplar than in willow, whereas in leaves the opposite was found. As a consequence, the translocation factor (Tf) revealed a greater ability of Cd transport in willow than in poplar. Cd treatment enhanced cysteine, γ-glutamylcysteine and reduced glutathione contents in roots of both species, whereas in leaves they were only enhanced in poplar. Furthermore, only poplar leaves showed an enhanced content of phytochelatins, whereas malic and citric acids rose in response to Cd only in the willow leaves. Cd treatment increased putrescine, spermidine and spermine contents in both roots and leaves of the willow, whereas in poplar only the putrescine content was enhanced in roots.

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Increased antioxidative capacity in maize calli during and after oxidative stress induced by a long lead treatment

Cited by 54 publications

References 32 publications

Antioxidative responses related to H2O2 depletion in Hypnum plumaeforme under the combined stress induced by Pb and Ni

Antioxidative responses related to H2O2 depletion in Hypnum plumaeforme under the combined stress induced by Pb and Ni

Response mechanisms of antioxidants in bryophyte (Hypnum plumaeforme) under the stress of single or combined Pb and/or Ni

Cadmium accumulation and tolerance in Populus nigra and Salix alba

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