Enhanced phytoextraction of an agricultural Cr- and Pb-contaminated soil by bioaugmentation with siderophore-producing bacteria

Determining soil enzyme activities for the assessment of fungi and citric acid-assisted phytoextraction under cadmium and lead contamination

“…Microorganisms can produce organic acids such as fumaric acid, succinic acid, lactic acid, malic acid, and citric acid in their metabolic processes (Tsao et al 1999). These microbial metabolites have the potential to alleviate the heavy metal stress on many soil enzyme activities by mobilizing heavy metals that can then be easily removed by plants (Becerra-Castro et al 2013;Braud et al 2009). Addition of citric acid can also enhance heavy metal availability by chelation, and high heavy metal availability is one of the key factors to increase the uptake of metals in the hyperaccumulator.…”

“…and increasing the translocation from the roots to the shoots of the hyperaccumulator (Gao et al 2012). Microbial metabolite, such as low-molecular-weight acid, can also change the chemical availability of heavy metals in soil to assist the phytoextraction (Braud et al 2009). Furthermore, application of beneficial microbial inoculants to soil promotes the uptake of nutrients by plants and then enhances phytoextraction effectiveness by promoting plant growth (Schoebitz et al 2013).…”

Efficacy of Plant Growth Promoting Rhizo Bacteria Containing Acc-Deaminase Activity for Enhancing Growth of Maize (Zea Mays L) under Salt-Stressed Conditions

“…This depicted that inoculation of maize seed with rhizobial strains showed better behaviour in plant height mitigating the toxic impacts of saline conditions (ECe=5.58 dS m -1 ). Plant fresh weight showed statistically significant results in data of wheat plants inoculated with strains under saline environment as indicated in table-2.Maximum fresh weight (8.6 g plant -1 ) was attained by M 9 . Remaining strains showed better fresh weight comparing with control saline conditions at ECe=5.58 dS m Salinity is one of the solemn environmental evils that cause osmotic stress and decline in plant growth and crop productivity in irrigated areas of arid and semiarid regions (Cicek and Cakirlar 2002).…”

Effectiveness of Fungal Bacterial Interactions as Biofilmed Biofertilizers on Enhancement of Root Growth of Hevea Seedlings

“…They stimulate plant growth through mobilizing nutrients in soils, producing numerous plant growth regulators, enhance resistance to stress, stabilize soil aggregates, and improve soil structure and organic matter content (Ahemad, 2012;Ahemad and Malik, 2011;Hayat et al, 2010;Rajkumar et al, 2010 andBraud et al, 2009). Indeed, the bacteria lodging around/in the plant roots (rhizobacteria) are more versatile in transforming, mobilizing, solubilizing the nutrients compared to those from bulk soils (Hayat et al, 2010).…”