TY - JOUR
T1 - Comparative Assessment of PAHs Reduction in Soil by Growing Zea mays L. Augmented with Microbial Consortia and Fertilizer
T2 - Modulation in Uptake and Antioxidant Defense Response
AU - Kumari, Babita
AU - Kriti, Kriti
AU - Sinam, Geetgovind
AU - Singh, Gayatri
AU - Jouhari, Nitanshi
AU - Kumar, Navin
AU - Gautam, Ambedkar
AU - Mallick, Shekhar
N1 - Publisher Copyright:
© 2019 Taylor & Francis Group, LLC.
PY - 2021/1/1
Y1 - 2021/1/1
N2 - Polyaromatic hydrocarbons (PAHs) are found ubiquitously in the environment and are carcinogenic and recalcitrant in nature, hence their fate in crops is imperative to quantify. In present study, the role of petroleum hydrocarbon (PH) degrading microbial consortium and organic fertilizer in the translocation and accumulation of PAHs in a crop plant i.e., Zea mays var. NMH-589 was determined under experimental simulated condition using spiked soil with PAHs mixture (300 µg g−1 phenantherene, 300 µg g−1 anthracene, 200 µg g−1 pyrene, and 200 µg g−1 fluoranthene). After 32 days of treatment, removal of 49.7% of PAHs mixture (k = 0.01552 d−1, t1/2 = 44.6 d) in soil was observed due to growth of maize plant, compared to only 31% removal in non-planted soil (k = 0.0097, t1/2 = 71.456). While growing maize plant amended with organic fertilizer and microbial consortium (Pseudomonas sp. BP10 and Penicillium oxalicum PS10), enhanced the degradation rate of PAHs in soil by 99.4% (k = 0.03107 d−1, t1/2 = 22.3 d). Maximum accumulation of total PAHs mixture in plant tissues (root, shoot, and leaves) was 99.5, 63.5, and 43.5 µg g−1, respectively without any amendment, while the accumulation was lowest i.e., 11.4 µg g−1, 1.2 µg g−1 and not detected, respectively when the soil was amended with microbes and cow-dung manure. Plants also stimulated the microbial count in soil by enhancing their CFU g−1 of soil up to 503%), while the addition of microbial consortium reduced the PAHs stress to plant concurrent with the decrease in antioxidant activities of the plant.
AB - Polyaromatic hydrocarbons (PAHs) are found ubiquitously in the environment and are carcinogenic and recalcitrant in nature, hence their fate in crops is imperative to quantify. In present study, the role of petroleum hydrocarbon (PH) degrading microbial consortium and organic fertilizer in the translocation and accumulation of PAHs in a crop plant i.e., Zea mays var. NMH-589 was determined under experimental simulated condition using spiked soil with PAHs mixture (300 µg g−1 phenantherene, 300 µg g−1 anthracene, 200 µg g−1 pyrene, and 200 µg g−1 fluoranthene). After 32 days of treatment, removal of 49.7% of PAHs mixture (k = 0.01552 d−1, t1/2 = 44.6 d) in soil was observed due to growth of maize plant, compared to only 31% removal in non-planted soil (k = 0.0097, t1/2 = 71.456). While growing maize plant amended with organic fertilizer and microbial consortium (Pseudomonas sp. BP10 and Penicillium oxalicum PS10), enhanced the degradation rate of PAHs in soil by 99.4% (k = 0.03107 d−1, t1/2 = 22.3 d). Maximum accumulation of total PAHs mixture in plant tissues (root, shoot, and leaves) was 99.5, 63.5, and 43.5 µg g−1, respectively without any amendment, while the accumulation was lowest i.e., 11.4 µg g−1, 1.2 µg g−1 and not detected, respectively when the soil was amended with microbes and cow-dung manure. Plants also stimulated the microbial count in soil by enhancing their CFU g−1 of soil up to 503%), while the addition of microbial consortium reduced the PAHs stress to plant concurrent with the decrease in antioxidant activities of the plant.
KW - Penicillium oxalicum
KW - Phytoremediation
KW - Polyaromatic hydrocarbons
KW - Pseudomonassp
KW - organic fertilizer
UR - http://www.scopus.com/inward/record.url?scp=85075940140&partnerID=8YFLogxK
U2 - 10.1080/10406638.2019.1694544
DO - 10.1080/10406638.2019.1694544
M3 - Article
AN - SCOPUS:85075940140
SN - 1040-6638
VL - 41
SP - 1694
EP - 1711
JO - Polycyclic Aromatic Compounds
JF - Polycyclic Aromatic Compounds
IS - 8
ER -