Biotechnology, from a global perspective, involves applying biological systems, organisms, or derivatives to develop innovative products and processes that address global challenges and enhance the quality of life. As an interdisciplinary field bridging biology, technology, and engineering, biotechnology significantly impacts critical sectors, including healthcare, agriculture, environmental management, and industrial processes. In healthcare, biotechnology drives advancements in vaccines, gene therapy, personalized medicine, and diagnostic tools, improving disease prevention and treatment. Agricultural biotechnology focuses on developing genetically modified (GM) crops with higher yields, resistance to pests, and adaptability to climate change, ensuring food security. Additionally, it enhances livestock breeding and productivity. Environmental applications of biotechnology include bioremediation to combat pollution, development of biofuels to reduce reliance on fossil fuels, and creation of biodegradable materials to mitigate waste. In industrial processes, biotechnology optimizes manufacturing efficiency through the use of enzymes and microorganisms, contributing to sustainable production. Globally, biotechnology addresses pressing challenges like food insecurity, climate change, health inequality, and environmental degradation. Its role in sustainable development is critical, fostering eco-friendly solutions and improving the resilience of economies and societies. However, the field raises ethical and regulatory concerns, such as the risks of genetic engineering and the equitable distribution of benefits. International collaboration among governments, industries, and scientists is essential to ensure responsible innovation and maximize biotechnology’s potential to improve global well-being. As a transformative science, biotechnology continues to shape the future, balancing innovation with sustainability and equity.

Root associated bacteria were isolated from Suaeda nudiflora and two isolates were selected for this study: rhizospheric Bacillus megaterium and endophytic Pseudomonas aeruginosa. These isolates were inoculated into maize variety Narmada Moti during its germination. TTC (2, 3, 5-triphenyl tetrazolium chloride) staining was used to confirm the association of the isolates with the maize root. The effects of these root associated bacteria were tested alone and in combinations for cell wall reinforcement and the induction of defense enzymes such as phenylalanine ammonia lyase (PAL) and β-1,3-glucanase in the presence of fungal pathogen Aspergillus niger in maize. The results indicated that the rhizospheric bacteria had a greater fight response to fungal infection than the endophhytic bacteria due to cell wall lignification as well as the rapid induction of higher concentrations of defense related enzymes.

Plants encountered various infections in their natural environments, and they evolved a variety of defence systems to fend against the pathogen. One of them is the induction of pathogenesis-related proteins. In this study, the induction of pathogenesis-related proteins in four pigeon pea varieties, such as IPAC-02, ICPL 11260, Shrawani and Shweta were studied; upon phytophthora blight infection. The comparative study was done by morphological and biochemical analysis of all pigeon pea varieties against the Phytophthora infection. The result of morphological data indicates that the infection ICPL 11260 and Shrawani had significantly decreased root length; shoot length, number of leaves, fresh weight, and dry weight, compared to IPAC-02 and Shweta. The induction of PR protein as beta,1-3-glucanase, chitinase, phenylalanine ammonia-lyase, polyphenol oxidase, and peroxidase with their respective non-infected varieties at various stages was analysed from pre-infection to 1st day after infection up to 16th day after infection and the result showed higher PR activity in IPAC-02 and Shweta and peaked on the fourth and seventh day after infection respectively, whereas they were lowest activity in ICPL 11260 and Shrawani starting from the first day after infection. These results imply that the pattern of pathogenesis-related protein induction may play a crucial role in plant defence mechanisms, contributing to the selection of pigeon pea varieties' resistance to phytophthora infections.

Actinobacteria are a diverse group of Gram-positive bacteria found in various ecosystems, including soil, plant rhizospheres, and marine environments. Their presence contributes significantly to microbial diversity, influencing ecosystem stability and plant health. These bacteria play a crucial role in promoting plant growth under normal and stress conditions through multiple mechanisms, including enhanced nutrient uptake, production of phytohormones, and induction of pathogenesis-related (PR) proteins. Additionally, actinobacteria stimulate enzymatic activity, produce antibiotics, and synthesize secondary metabolites that aid in plant defense. One of the key attributes of actinobacteria is their ability to suppress plant pathogens through the production of bioactive compounds, including antimicrobial metabolites and lytic enzymes. These metabolites not only inhibit the growth of pathogens but also activate systemic resistance in plants, improving their ability to withstand infections. Furthermore, actinobacteria contribute to soil fertility by decomposing organic matter and facilitating nutrient cycling, thereby enhancing plant resilience. The biotechnological potential of actinobacteria is immense, as their use in agriculture can offer an eco-friendly alternative to chemical pesticides and fertilizers. By harnessing these beneficial microbes, sustainable plant protection strategies can be developed, reducing crop losses due to pathogenic stress while promoting healthier plant growth and productivity.