Publications by authors named "Swarnalakshmi K"

The continuing decline in water resources under the ever-changing climate compels us to re-orient our focus to a more sustainable practice. This study investigates the performance of wheat genotypes viz. HD-2967, HD-3086, HD-3249, DBW-187, and HD-3226 under well- and deficit-watered conditions for their root-traits, biomass and nitrogen accumulation and remobilization, and water use efficiencies, grown in PVC-tubes.

View Article and Find Full Text PDF
Article Synopsis
  • Delayed sowing of maize hybrids can lead to lower yields due to poor root growth, nutrient uptake, and dry matter accumulation.
  • In a study comparing five maize hybrids, timely sowing resulted in 16-19% higher grain yields and 12-25% higher stover yields compared to late sowing.
  • Advanced hybrids AH-4271 and AH-4158 performed best in terms of grain yield, nutrient efficiency, and root growth, emphasizing the importance of sowing time and hybrid selection for maximizing maize productivity.
View Article and Find Full Text PDF

Photosynthesis, crop health and dry matter partitioning are among the most important factors influencing crop productivity and quality. Identifying variation in these parameters may help discover the plausible causes for crop productivity differences under various management practices and cropping systems. Thus, a 2-year (2019-2020) study was undertaken to investigate how far the integrated crop management (ICM) modules and cropping systems affect maize physiology, photosynthetic characteristics, crop vigour and productivity in a holistic manner.

View Article and Find Full Text PDF
Article Synopsis
  • Field experiments evaluated eight integrated crop management (ICM) modules over five years in a maize-wheat rotation, showing significant boosts in maize grain yield with CA-based ICM methods compared to conventional techniques.
  • Results indicated that while wheat yields remained statistically similar across methods, overall system yields for maize equivalents were higher in the CA-based approaches that retained residues.
  • The study concluded that adopting CA-based ICM can enhance crop sustainability, improve farm profits, conserve water, and positively affect soil properties in north-western plains.
View Article and Find Full Text PDF

Rhizosphere microbial communities are dynamic and play a crucial role in diverse biochemical processes and nutrient cycling. Soil type and cultivar modulate the composition of rhizosphere microbial communities. Changes in the community composition significantly alter microbial function and ecological process.

View Article and Find Full Text PDF

Conservation agriculture (CA)-based practices have been promoted and recouped, as they hold the potential to enhance farm profits besides a consistent improvement in soil properties. A 7 years' field experiment consisting of three crop establishment practices viz., zero-till flatbed (ZTFB), permanent beds (PNB), conventional system (CT) along with the three-nutrient management; nutrient expert-based application (NE), recommended fertilization (RDF), and farmers' fertilizer practice (FFP), was carried out from 2013 to 2020.

View Article and Find Full Text PDF

Grain legumes are an important component of sustainable agri-food systems. They establish symbiotic association with rhizobia and arbuscular mycorrhizal fungi, thus reducing the use of chemical fertilizers. Several other free-living microbial communities (PGPR-plant growth promoting rhizobacteria) residing in the soil-root interface are also known to influence biogeochemical cycles and improve legume productivity.

View Article and Find Full Text PDF

species have been isolated from a wide range of hosts and environments, including heavy metal-contaminated sites. Here, we present a comprehensive analysis on the phylogenetic distribution and the genetic potential of 70 belonging to 20 different species isolated from heavy metal-contaminated and non-contaminated sites with particular attention to secondary metabolites gene clusters. The analyzed species are divided in three main functional clades.

View Article and Find Full Text PDF

The present study is an attempt to understand the impact of bioinoculants, Azotobacter chroococcum (A), Bacillus megaterium (B), Pseudomonas fluorescens (P), on (a) soil and plant nutrient status, (b) total resident and active bacterial communities, and (c) genes and transcripts involved in nitrogen cycle, during cultivation of Cajanus cajan. In terms of available macro- and micro-nutrients, triple inoculation of the bioinoculants (ABP) competed well with chemical fertilizer (CF). Their 'non-target' effects were assessed in terms of the abundance and activity of the resident bacterial community by employing denaturing gradient gel electrophoresis (DGGE).

View Article and Find Full Text PDF

Aims: To evaluate the antibacterial activity of Artocarpus hirsutus mediated seed extract for nanoparticle synthesis.

Background: Gastrointestinal bacteria are known for causing deadly infections in humans. They also possess multi-drug resistance and interfere with clinical treatments.

View Article and Find Full Text PDF

strain KMS 55 (MTCC 12703) is an isolate from the root tissues of rice ( L.) that displays a high biological nitrogen fixation ability. Here, we report the complete genome sequence of this strain, which contains 4,637,820 bp, 4,289 protein-coding genes, 5,006 promoter sequences, 62 tRNAs, a single copy of 5S-16S-23S rRNA, and a genome average GC content of 51.

View Article and Find Full Text PDF

Glucose, maltose, and mannose as sole carbon sources, induced synthesis of glucose dehydrogenase (GDH) in three strains of Pantoea with specific activities from 0.14 to 0.6 U/mg proteins.

View Article and Find Full Text PDF

A total of 137 bacterial isolates from surface sterilized root, stem, and nodule tissues of soybean were screened for their antifungal activity against major phytopathogens like Rhizoctonia bataticola, Macrophomina phaseolina, Fusarium udam, and Sclerotium rolfsii. Nine bacterial endophytes suppressed the pathogens under in vitro plate assay. These were characterized biochemically and identified at the genus level based on their partial sequence analysis of 16S rDNA.

View Article and Find Full Text PDF