2,4-dichlorophenoxyacetic acid-induced leaf senescence in mung bean (Vigna radiata L. Wilczek) and senescence inhibition by co-treatment with silver nanoparticles
DC Field | Value | Language |
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dc.contributor.author | Karuppanapandian, Thirupathi | - |
dc.contributor.author | Wang, Hong Wei | - |
dc.contributor.author | Prabakaran, Natarajan | - |
dc.contributor.author | Jeyalakshmi, Kandhavelu | - |
dc.contributor.author | Kwon, Mi | - |
dc.contributor.author | Manoharan, Kumariah | - |
dc.contributor.author | Kim, Wook | - |
dc.date.accessioned | 2021-09-07T15:39:23Z | - |
dc.date.available | 2021-09-07T15:39:23Z | - |
dc.date.created | 2021-06-14 | - |
dc.date.issued | 2011-02 | - |
dc.identifier.issn | 0981-9428 | - |
dc.identifier.uri | https://scholar.korea.ac.kr/handle/2021.sw.korea/113166 | - |
dc.description.abstract | Leaf senescence induced by 2,4-dichlorophenoxyacetic acid (2,4-D) and senescence inhibition caused by supplementation with silver (Ag+) ions in the form of silver nitrate (AgNO3) or silver nanoparticles (AgNPs) were investigated in 8-day-old mung bean (Vigna radiata L. Wilczek) seedlings. Inhibition of root and shoot elongation were observed in mung bean seedlings treated with 500 mu M 2,4-D. Concomitantly, the activity of 1-aminocyclopropane-1-carboxylic acid synthase was significantly induced in leaf tissue. Leaf senescence induced by 2,4-D was closely associated with lipid peroxidation as well as increased levels of cytotoxic hydrogen peroxide (H2O2) and superoxide radicals (O-2(center dot-)). Despite decreased catalase activity, the activities of peroxidase, superoxide dismutase, monodehydroascorbate reductase, dehydroascorbate reductase, and glutathione reductase were increased during 2,4-D-induced leaf senescence. Further, the levels of reduced ascorbate, oxidized ascorbate, and reduced glutathione were markedly decreased, whereas the level of oxidized glutathione increased. 2,4-D-induced leaf senescence in mung bean was accompanied by an increase in positive terminal deoxynucleotidyl transferase-mediated dUTP nick-end labeling, nuclear DNA fragmentation, and the activity of a 15-kDa Ca2+-dependent DNase. Supplementation with 100 mu M AgNO3 or AgNPs inhibited 2,4-D-induced leaf senescence. The present results suggest that increased oxidative stress (O-2(center dot-) and H2O2) led to senescence in mung bean leaves. Furthermore, significantly induced antioxidative enzymes are not sufficient to protect mung bean cells from 2,4-D-induced harmful ROS. (C) 2010 Elsevier Masson SAS. All rights reserved. | - |
dc.language | English | - |
dc.language.iso | en | - |
dc.publisher | ELSEVIER FRANCE-EDITIONS SCIENTIFIQUES MEDICALES ELSEVIER | - |
dc.subject | PROGRAMMED CELL-DEATH | - |
dc.subject | SUPEROXIDE-DISMUTASE | - |
dc.subject | ENGINEERED NANOPARTICLES | - |
dc.subject | ASCORBATE PEROXIDASE | - |
dc.subject | GLUTATHIONE | - |
dc.subject | BIOSYNTHESIS | - |
dc.subject | PLANTS | - |
dc.subject | LEAVES | - |
dc.subject | IDENTIFICATION | - |
dc.subject | CHLOROPLASTS | - |
dc.title | 2,4-dichlorophenoxyacetic acid-induced leaf senescence in mung bean (Vigna radiata L. Wilczek) and senescence inhibition by co-treatment with silver nanoparticles | - |
dc.type | Article | - |
dc.contributor.affiliatedAuthor | Kim, Wook | - |
dc.identifier.doi | 10.1016/j.plaphy.2010.11.007 | - |
dc.identifier.scopusid | 2-s2.0-78751700997 | - |
dc.identifier.wosid | 000287716400008 | - |
dc.identifier.bibliographicCitation | PLANT PHYSIOLOGY AND BIOCHEMISTRY, v.49, no.2, pp.168 - 177 | - |
dc.relation.isPartOf | PLANT PHYSIOLOGY AND BIOCHEMISTRY | - |
dc.citation.title | PLANT PHYSIOLOGY AND BIOCHEMISTRY | - |
dc.citation.volume | 49 | - |
dc.citation.number | 2 | - |
dc.citation.startPage | 168 | - |
dc.citation.endPage | 177 | - |
dc.type.rims | ART | - |
dc.type.docType | Article | - |
dc.description.journalClass | 1 | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.relation.journalResearchArea | Plant Sciences | - |
dc.relation.journalWebOfScienceCategory | Plant Sciences | - |
dc.subject.keywordPlus | PROGRAMMED CELL-DEATH | - |
dc.subject.keywordPlus | SUPEROXIDE-DISMUTASE | - |
dc.subject.keywordPlus | ENGINEERED NANOPARTICLES | - |
dc.subject.keywordPlus | ASCORBATE PEROXIDASE | - |
dc.subject.keywordPlus | GLUTATHIONE | - |
dc.subject.keywordPlus | BIOSYNTHESIS | - |
dc.subject.keywordPlus | PLANTS | - |
dc.subject.keywordPlus | LEAVES | - |
dc.subject.keywordPlus | IDENTIFICATION | - |
dc.subject.keywordPlus | CHLOROPLASTS | - |
dc.subject.keywordAuthor | 2,4-Dichlorophenoxyacetic acid | - |
dc.subject.keywordAuthor | Ethylene | - |
dc.subject.keywordAuthor | Leaf senescence | - |
dc.subject.keywordAuthor | Mung bean | - |
dc.subject.keywordAuthor | Nuclear DNA fragmentation | - |
dc.subject.keywordAuthor | Silver nanoparticles | - |
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