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Authors Chiboub, M; Jebara, SH; Saadani, O; Fatnassi, IC; Abdelkerim, S; Jebara, M
Author Full Name Chiboub, Manel; Jebara, Salwa Harzalli; Saadani, Omar; Fatnassi, Imen Challougui; Abdelkerim, Souhir; Jebara, Moez
Title Physiological responses and antioxidant enzyme changes in Sulla coronaria inoculated by cadmium resistant bacteria
Source JOURNAL OF PLANT RESEARCH
Language English
Document Type Article
Author Keywords Cadmium; Sulla coronaria; Phytostabilization; PGPB; Symbiosis
Keywords Plus PLANT-GROWTH; REACTIVE OXYGEN; LIPID-PEROXIDATION; MINE TAILINGS; METAL UPTAKE; GLUTATHIONE; TOXICITY; SALT; CD; PHYTOSTABILIZATION
Abstract Plant growth promoting bacteria (PGPB) may help to reduce the toxicity of heavy metals on plants growing in polluted soils. In this work, Sulla coronaria inoculated with four Cd resistant bacteria (two Pseudomonas spp. and two Rhizobium sullae) were cultivated in hydroponic conditions treated by Cd; long time treatment 50 A mu M CdCl2 for 30 days and short time treatment; 100 A mu M CdCl2 for 7 days. Results showed that inoculation with Cd resistant PGPB enhanced plant biomass, thus shoot and root dry weights of control plants were enhanced by 148 and 35% respectively after 7 days. Co-inoculation of plants treated with 50 and 100 A mu M Cd increased plant biomasses as compared to Cd-treated and uninoculated plants. Cadmium treatment induced lipid peroxidation in plant tissues measured through MDA content in short 7 days 100 A mu M treatment. Antioxidant enzyme studies showed that inoculation of control plants enhanced APX, SOD and CAT activities after 30 days in shoots and SOD, APX, SOD, GPOX in roots. Application of 50 A mu M CdCl2 stimulated all enzymes in shoots and decreased SOD and CAT activities in roots. Moreover, 100 A mu M of CdCl2 increased SOD, APX, CAT and GPOX activities in shoots and increased significantly CAT activity in roots. Metal accumulation depended on Cd concentration, plant organ and time of treatment. Furthermore, the inoculation enhanced Cd uptake in roots by 20% in all treatments. The cultivation of this symbiosis in Cd contaminated soil or in heavy metal hydroponically treated medium, showed that inoculation improved plant biomass and increased Cd uptake especially in roots. Therefore, the present study established that co-inoculation of S. coronaria by a specific consortium of heavy metal resistant PGPB formed a symbiotic system useful for soil phytostabilization.
Author Address [Chiboub, Manel; Jebara, Salwa Harzalli; Saadani, Omar; Fatnassi, Imen Challougui; Abdelkerim, Souhir; Jebara, Moez] Univ Tunis El Manar, Ctr Biotechnol Borj Cedria, Lab Legumineuses, BP 901, Hammam Lif 2050, Tunisia
Reprint Address Jebara, SH (corresponding author), Univ Tunis El Manar, Ctr Biotechnol Borj Cedria, Lab Legumineuses, BP 901, Hammam Lif 2050, Tunisia.
E-mail Address jebarasalwa@yahoo.fr
Times Cited 16
Total Times Cited Count (WoS, BCI, and CSCD) 16
Publisher SPRINGER JAPAN KK
Publisher City TOKYO
Publisher Address SHIROYAMA TRUST TOWER 5F, 4-3-1 TORANOMON, MINATO-KU, TOKYO, 105-6005, JAPAN
ISSN 0918-9440
29-Character Source Abbreviation J PLANT RES
ISO Source Abbreviation J. Plant Res.
Publication Date JAN
Year Published 2018
Volume 131
Issue 1
Special Issue SI
Beginning Page 99
Ending Page 110
Digital Object Identifier (DOI) 10.1007/s10265-017-0971-z
Page Count 12
Web of Science Category Plant Sciences
Subject Category Plant Sciences
Document Delivery Number FS6KA
Unique Article Identifier WOS:000419905100013
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