Terminalia arjuna bark extract alleviates nickel toxicity by suppressing its uptake and modulating antioxidative defence in rice seedlings.
Terminalia arjuna ( Ta) bark contains various natural antioxidants and has been used to protect animal cells against oxidative stress. In the present study, we have examined alleviating effects of Ta bark aqueous extract against Ni toxicity in rice ( Oryza sativa L.). When rice seedlings were raised...
| Publicado en: | Protoplasma Vol. 253; no. 6; pp. 1449 - 1463 |
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| Autores principales: | , , , , |
| Formato: | Journal Article |
| Publicado: |
Springer Nature
Nov2016
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| Acceso en línea: | Ver este registro en EBSCOhost |
| fields | @attributes: recordID: 1 pdfLink: plink: https://search.ebscohost.com/login.aspx?direct=true&db=ccm&AN=118885517&site=ehost-live header: @attributes: shortDbName: ccm uiTerm: 118885517 longDbName: CINAHL Complete uiTag: AN controlInfo: bkinfo: dissinfo: jinfo: jid: 0033183X 2CF jtl: Protoplasma issn: 0033183X maglogo: N pubinfo: dt: Nov2016 vid: 253 iid: 6 pid: 237 pub: Springer Nature place: New York, New York artinfo: ui: 118885517 10.1007/s00709-015-0899-x 118885517 ppf: 1449 ppct: 14 formats: fmt: @attributes: type: P tig: atl: Terminalia arjuna bark extract alleviates nickel toxicity by suppressing its uptake and modulating antioxidative defence in rice seedlings. aug: au: Rajpoot, Ritika Rani, Anjana Srivastava, Rajneesh Pandey, Poonam Dubey, R. affil: Department of Biochemistry, Faculty of Science , Banaras Hindu University , Varanasi 221005 India sug: ab: Terminalia arjuna ( Ta) bark contains various natural antioxidants and has been used to protect animal cells against oxidative stress. In the present study, we have examined alleviating effects of Ta bark aqueous extract against Ni toxicity in rice ( Oryza sativa L.). When rice seedlings were raised for 8 days in hydroponics in Yoshida nutrient medium containing 200 μM NiSO, a decline in height, reduced biomass, increased Ni uptake, loss of root plasma membrane integrity, increase in the level of O˙, HO and ˙OH, increased lipid peroxidation, decline in photosynthetic pigments, increase in the level of antioxidative enzymes superoxide dismutase, catalase and glutathione peroxidase and alterations in their isoenzyme profile patterns were observed. Transmission electron microscopy (TEM) showed damage to chloroplasts marked by disorganised enlarged starch granules and disrupted thylakoids under Ni toxicity. Exogenously adding Ta bark extract (3.2 mg ml) to the growth medium considerably alleviated Ni toxicity in the seedlings by reducing Ni uptake, suppressing generation of reactive oxygen species, reducing lipid peroxidation, restoring level of photosynthesis pigments and ultrastructure of chloroplasts, and restoring levels of antioxidative enzymes. Results suggest that Ta bark extract considerably alleviates Ni toxicity in rice seedlings by preventing Ni uptake and reducing oxidative stress in the seedlings. pubtype: Academic Journal doctype: Journal Article ougenre: Article language: English refInfo: holdings: @attributes: islocal: N |
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