Bacterial Endophytes: Potential Role in Developing Sustainable Systems of Crop Production

Improvement in symbiotic efficiency of chickpea (Cicer arietinum) by coinoculation of Bacillus strains with Mesorhizobium sp. Cicer

“…Signifi cant increase in the root dry mass of rapeseed was observed due to inoculation with Proteus, Klebsiella and Bacillus 2 . The data from these studies along with earlier reported work of Sturz et al 27 indicated that rhizobacteria from the local rhizosphere soil could be exploited for use as microbial inoculants to improve nodulation (in legumes) and crop productivity of both cereals as well as legumes. …”

“…Halverson and Handelsman 6 also observed that seed treatment with Bacillus cereus UW85 increased nodulation of soybean in three fi eld seasons and in three different sterilized soils in the growth chamber. Inoculation of legumes and cereal plants with PGPR strains has been found to show a wide range of effects that varied among strain of PGPR 27 . Some PGPR strains stimulated plant growth by affecting some plant physiological events such as photosynthesis, nodulation and nitrogen fi xation 28,29 .…”

Wastewater reuse in irrigation: A microbiological perspective on implications in soil fertility and human and environmental health

“…Depending on the type of organic matter inputs, an in-crease in the organic matter availability may promote the selection of specific bacterial populations (Sun et al, 2014;Torsvik and Ovreas, 2002). For instance, the supplying of easily metabolisable nutrients may contribute to select bacterial groups with high growth rates, such as members of the classes Alpha-and Beta-Proteobacteria (Smit et al, 2001).…”

“…Part of these bacteria can be transmitted to the consumers, mainly through uncooked vegetables. Opportunistic human pathogens de-scribed as endophytic bacteria include members of the genus Staphylococcus and family Enterobacteriaceae (e.g., Hafnia, Yersinia, Pantoea, Salmonella, Enterobacter, Citrobacter and Klebsiella) (Markova et al, 2005;Opelt et al, 2007;Rosenblueth and Martínez-Romero, 2006;Sturz et al, 2000;Wang et al, 2006). Although some Enterobaceriaceae have the ability to promote plant growth (Rosenblueth and Martínez-Romero, 2006;Tyler and Triplett, 2008), risks for human health cannot be ignored.…”

New advances in plant growth-promoting rhizobacteria for bioremediation

“…PGPR can be divided into two groups according to their relationship with the plants: symbiotic bacteria and free-living rhizobacteria (Khan, 2005). As reviewed by Compant et al (2005), Glick (1995Glick ( , 2001, Hall (2002), Hallman et al (1997), Lucy et al (2004), Sturz et al (2000), and Welbaum et al (2004), a lot of work have been done on the mechanisms and principles of the PGPR-plant relationship, which was accepted widely as rhizosphere effect. Generally, PGPR function in three different ways (Glick, 1995(Glick, , 2001): synthesizing particular compounds for the plants, facilitating the uptake of certain nutrients from the environment (Çakmakçi et al, 2006;Lucas García et al, 2004a,b;Siddiqui and Mahmood, 2001), and lessening or preventing the plants from diseases (Guo et al, 2004;Jetiyanon and Kloepper, 2002;Raj et al, 2003;Saravanakumar et al, in press).…”