Performance of Pseudomonas spp. containing ACC-deaminase for improving growth and yield of maize (Zea mays L.) in the presence of nitrogenous fertilizer

Maize (Zea Mays L.) Growth and Metabolic Dynamics with Plant Growth- Promoting Rhizobacteria under Salt Stress

“…Our results showed that P. fluorescens was the best inoculum for Zea mays growth enhancing. These results confirm previous findings where the enhancing effect of Zea mays inoculation with P. fluorescens on dry weight and yield of maize was reported [3,46], increase in plant height, root weight and total biomass were observed in response to inoculation.…”

“…Biofertilizers are ecofriendly inputs and are less damaging to the environment when compared to chemical fertilizers [1,2]. Beneficial rhizobacteria, often referred to as plant growth-promoting rhizobacteria (PGPR), affect plant growth either directly or indirectly through various mechanisms of action [3][4][5][6]. Although, the mechanisms by which PGPRs promote plant growth are not fully understood, some mechanisms include gibberellic acid and/or cytokinins production, nitrogen fixation, and solubilization of mineral phosphate and other nutrients [7].…”

Growth Enhancement and Disease Reduction of Soybean by 1-Aminocyclopropane-1-Carboxylate Deaminase-Producing <i>Pseudomonas</i>

“…It suggests that the bacteria may have the capacity to reduce disease development as described by previous reports (Wang et al, 2000;Glick et al, 2007). However, since the effectiveness of the bacteria may vary depending on the nutrient status of the media (Shaharoona et al, 2006; and the fitness of the bacteria with host plants (Silvia, 2005), these abilities are worth to be verified.…”

“…Low nutrient status of the soils used in the study could affect their efficacy in growth promotion. Shaharoona et al (2006;2008) reported that plant growth promotion of bacteria containing ACC deaminase occurred when optimum levels of N fertilizer were applied. The results suggest that application of the appropriate doses of fertilizers into soil with low fertility status is required to get maximum benefit in utilizing these bacteria.…”

“…Regarding plant-pathogen interactions, ethylene produced during plant infection promotes disease rather than alleviating it (Van Loon et al, 2006). Ample studies on the benefits of ACC deaminase-producing bacteria in reducing ethylene synthesis caused by various biotic and abiotic stresses have been reported, such as those caused by high concentration of IAA (Mayak et al, 1999), water logging (Grichko and Glick, 2001), nutritional stress (Belimov et al, 2002), drought (Mayak et al, 2004), organic and inorganic pollutants (Reed and Glick, 2005;Belimov et al 2001), high salts (Saravanakumar and Samiyappan, 2007) and pathogenic infection (Wang et al, 2000;Dey et al, 2004;Shaharoona et al, 2006). Thus, applying ACC deaminase producing bacteria to reduce ethylene synthesis in the plant, whenever it starts accelerating may become one of the promising strategies to increase plant growth and prevent disease development.…”