TY - JOUR
T1 - Trichoderma virens PDR-28
T2 - A heavy metal-tolerant and plant growth-promoting fungus for remediation and bioenergy crop production on mine tailing soil
AU - Babu, A. Giridhar
AU - Shim, Jaehong
AU - Bang, Keuk Soo
AU - Shea, Patrick J.
AU - Oh, Byung Taek
PY - 2014/1
Y1 - 2014/1
N2 - A heavy metal-tolerant fungus, Trichoderma virens PDR-28, was isolated from rhizosphere soil and evaluated for use in remediating mine tailing soil and for plant biomass production. PDR-28 exhibited plant growth-promoting traits, including 1-aminocyclopropane-1-carboxylic acid (ACC) deaminase, acid phosphatase and phytase activity, siderophore production, and P solubilization. HMs were more available in mine tailing soil inoculated soil with PDR-28 than in uninoculated soil; the order of HM bioleaching was Cd>As>Zn>Pb>Cu. PDR-28 effectively removed HMs in the order of Pb>Cd>As>Zn>Cu from liquid media containing 100mgHML-1. Inoculating HM-contaminated mine tailing soil with the fungus significantly increased the dry biomass of maize roots (64%) and shoots (56%). Chlorophyll, total soluble sugars (reducible and nonreducible), starch, and protein contents increased by 46%, 28%, 30%, and 29%, respectively, compared to plants grown in uninoculated soil. Inoculation increased heavy metal concentrations in maize roots by 25% (Cu) to 62% (Cd) and in shoots by 35% (Cu) to 64% (Pb) compared to uninoculated plants. Results suggest that PDR-28 would be beneficial for phytostabilization and plant biomass production as a potential source of biofuel in the quest for renewable energy.
AB - A heavy metal-tolerant fungus, Trichoderma virens PDR-28, was isolated from rhizosphere soil and evaluated for use in remediating mine tailing soil and for plant biomass production. PDR-28 exhibited plant growth-promoting traits, including 1-aminocyclopropane-1-carboxylic acid (ACC) deaminase, acid phosphatase and phytase activity, siderophore production, and P solubilization. HMs were more available in mine tailing soil inoculated soil with PDR-28 than in uninoculated soil; the order of HM bioleaching was Cd>As>Zn>Pb>Cu. PDR-28 effectively removed HMs in the order of Pb>Cd>As>Zn>Cu from liquid media containing 100mgHML-1. Inoculating HM-contaminated mine tailing soil with the fungus significantly increased the dry biomass of maize roots (64%) and shoots (56%). Chlorophyll, total soluble sugars (reducible and nonreducible), starch, and protein contents increased by 46%, 28%, 30%, and 29%, respectively, compared to plants grown in uninoculated soil. Inoculation increased heavy metal concentrations in maize roots by 25% (Cu) to 62% (Cd) and in shoots by 35% (Cu) to 64% (Pb) compared to uninoculated plants. Results suggest that PDR-28 would be beneficial for phytostabilization and plant biomass production as a potential source of biofuel in the quest for renewable energy.
KW - Bioenergy
KW - Bioleaching
KW - Mine
KW - Phytoremediation
KW - Phytostabilization
KW - Trichoderma
UR - http://www.scopus.com/inward/record.url?scp=84888812054&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84888812054&partnerID=8YFLogxK
U2 - 10.1016/j.jenvman.2013.10.009
DO - 10.1016/j.jenvman.2013.10.009
M3 - Article
C2 - 24291586
AN - SCOPUS:84888812054
VL - 132
SP - 129
EP - 134
JO - Journal of Environmental Management
JF - Journal of Environmental Management
SN - 0301-4797
ER -