Authors: Loganathan Praburaman SungHee Park Min Cho KuiJae Lee JeongAe Ko SangSub Han SangHyun Lee Seralathan KamalaKannan ByungTaek Oh
Publish Date: 2016/11/18
Volume: 24, Issue: 3, Pages: 3172-3180
Abstract
Microbeassisted phytoremediation has been considered a promising measure for the remediation of heavy metalpolluted soil The aim of this study was to assess the effect of diazotrophic plant growthpromoting Herbaspirillum sp GW103 on growth and lead Pb and zinc Zn accumulation in Zea mays L The strain GW103 exhibited plant growthpromoting traits such as indole3acetic acid siderophores and 1aminocyclopropane1carboxylic deaminase Treatment of Z mays L plants with GW103 significantly increased 19 31 and 52 of plant biomass and 10 50 and 126 of chlorophyll a contents in Pb Zn and Pb + Znamended soils respectively Similarly the strain GW103 significantly increased Pb and Zn accumulation in shoots and roots of Z mays L which were 77 and 25 in Pbamended soil 42 and 73 in Znamended soil and 27 and 84 in Pb + Znamended soil Furthermore addition of GW103 increased 8 12 and 7 of total protein content catalase and superoxide dismutase levels respectively in Z mays L plants The results pointed out that isolate GW103 could potentially reduce the phytotoxicity of metals and increase Pb and Zn accumulation in Z mays L plantThis work was supported by the BK21 plus program through the National Research Foundation NRF funded by the Ministry of Education of Korea The preparation of this manuscript was supported by “Research Base Construction Fund Support Program” funded by Chonbuk National University in 2009
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