Study the Effect of Plant Growth Regulators on Seed Germination of Various Tree Species of Rajasthan

This research paper delves into the influence of plant growth regulators (PGRs) on the germination percentage of four distinct plant species, specifically Albizia lebbeck (L.) Benth., Holoptelea integrifolia (Roxb.) Planch., Acacia catechu (L.f.) Willd., and Terminalia bellirica (Gaertn.) Roxb. The study was conducted at Arid Forest Research Institute, Jodhpur, during the summer of 2022. The study employed three PGRs: gibberellic acid (GA3), indole acetic acid (IAA), and indole-3-butyric acid (IBA) at two concentrations of 500 ppm and 1000 ppm. The primary objectives of this study were to evaluate the germination percentage of the four plant species and to ascertain the optimal PGR treatment for seed germination. The results of this research could potentially aid in the development of effective strategies to enhance seed germination and overall plant growth. The study revealed that the impact of PGRs on germination percentage was dependent on the plant species and the concentration of the PGR used. The findings indicated that the use of PGRs at appropriate concentrations could increase the germination percentage of seeds. Of the three PGRs used in the study, GA3 was found to be the most effective at enhancing seed germination for all four plant species, followed by IAA and IBA. Overall, this research has demonstrated that the use of PGRs can significantly improve seed germination percentage and can provide valuable insights into the optimal concentration of PGRs required for the best possible results. The study results could potentially assist in the development of PGR-based strategies to enhance plant growth and productivity, which could have important implications for agricultural and environmental sustainability

Genomically Defined Paenibacillus polymyxa ND24 for Efficient Cellulase Production Utilizing Sugarcane Bagasse as a Substrate

Cellulolytic bacteria from cattle rumen with ability to hydrolyze cellulose rich biomass were explored. The study selected Paenibacillus polymyxa ND24 from 847 isolates as the most potent strain, which can efficiently produce cellulase by utilizing sugarcane bagasse, rice straw, corn starch, CMC, and avicel as a sole carbon source. On annotation of P. polymyxa ND24 genome, 116 members of glycoside hydrolase (GH) family from CAZy clusters were identified and the presence of 10 potential cellulases was validated using protein folding information. Cellulase production was further demonstrated at lab-scale 5-L bioreactor exhibiting maximum endoglucanase activity up to 0.72 U/mL when cultivated in the medium containing bagasse (2% w/v) after 72 h. The bagasse hydrolysate so produced was further utilized for efficient biogas production. The presence of diverse hydrolytic enzymes and formidable cellulase activity supports the use of P. polymyxa ND24 for cost-effective bioprocessing of cellulosic biomass

From Trash to Treasure: Unlocking the Power of Resource Conservation, Recycling, and Waste Management Practices

“Trash to Treasure” refers to transforming discarded or unwanted items, often considered trash or waste, into valuable or desirable products [...

Untangling Structural and Functional Diversity of Prokaryotic Microbial Assemblage on Mangrove Pneumatophores

Mangroves are important coastal wetlands along tropical and subtropical regions. Pneumatophore, a kind of aerial root, is among the prominent components of a mangrove ecosystem, which provides microhabitats for a range of prokaryotic (bacteria and cyanobacteria) microbial assemblages, whose role in the maintenance of mangrove ecology often remains neglected. Very few studies are available on pneumatophore-associated prokaryotic microorganisms (PAPMs). The majority of them are related to the microscopic identification of cyanobacteria, with very limited research on the bacterial population, even though they demand more attention. Also, very scarce information is available on biotic and abiotic factors shaping the PAPMs. The objective of this review is to highlight the structural and functional importance of prokaryotic organisms associated with pneumatophores. This review begins with a brief introduction of what mangrove pneumatophores are, then focuses on the PAPMs, accentuating the breadth and depth of information gained from previous research. We further discuss how a combination of a traditional cultivable approach and a newly developed omics approach can be efficaciously employed to untangle PAPMs. This review provides updated information on PAPMs, which will intensify the visibility and necessity of pneumatophore-associated microbial community research