Bacteria secrete lipopeptide (surfactin) molecules, which are known to act as natural antibiotics. Recently, research on lipopeptide molecules has grown because of their role in increasing resistance to plant pathogens.• Isolated surfactin molecules at several concentrations, viz. 35, 25, 15 and 5 ppm, were used in an in vitro study for analysis of egg hatching inhibition and second-stage juvenile (J2) mortality of the nematode Meloidogyne incognita. Cell suspensions (1.2 × 10 8 cfuÁml −1 ) of both Bacillus subtilis (MTCC-441) and Pseudomonas putida (MTCC-102) were used in J2 inoculated tomato plants. Root-dip treatment of tomato seedlings with the crude lipopeptide (35 ppm) was also performed to analyse biocontrol potential. MALDI-TOF MS analysis was conducted to determine specific lipopeptide molecules.• Data showed nematode egg mortality of 85% in the 35 ppm surfactin concentration 96 h after exposure. The maximum ovicidal activity was 83.97% after incubation with 35 ppm surfactin for the same exposure period. Plant growth attributes and biochemical parameters were significantly improved when bacterial cultures were applied before J2 inoculation of tomato seedlings. We also recorded a reduction in egg masses, nematode population and root galling. The J2 penetration into tomato roots was effective in the root-dip experiments. Surfactin mass peak was determined at m/z 1058 [M+Na] + using MALDI-TOF MS.• These results indicate that bacterial cell suspensions can be used as a potent and versatile source to deal with nematode infection and provide a rich source of bioactive compounds with antinematode activity.
In recent years, there has been increasing interest in the function of bacterial surface elements and functional signals in biofilm formation. Plant-associated bacteria can significantly affect the health and productivity of a plant because they are found in many different areas of the plant, including roots, transport channels, stems, and leaves. The management of these compounds by plants is still unknown, although biofilm production on plants is associated with both symbiotic and pathogenic responses. While some of the bacteria found in biofilm matrices trigger pathogenesis, others can promote plant thriving and serve as biocontrol agents for phytopathogens. This detailed review discusses in depth the various elements and methods involved in the production of bacterial biofilms on plant surfaces and their attachment, as well as the relationship between these factors and bacterial activity and survival.
People-plant interaction studies the complex interactions that exist between humans and the natural environment, particularly plants; it is a thorough research that covers a wide range of views, including ecological, cultural, and psychological aspects. People-plant interaction, at its foundation, investigates how humans use plants as resources and imbue them with cultural and spiritual values, plants have provided humans with food, medicine, and shelter for millennia, and they have considerable cultural and symbolic importance in various nations and cultures. Furthermore, research on people-plant interactions emphasizes the numerous ways in which exposure to plants might promote human health. Exposure to nature, particularly plants, has been demonstrated in studies to help decrease stress and boost productivity. Indoor plants have been shown to enhance air quality and provide a more pleasant environment for humans to work and live in. With our planet's serious environmental issues, understanding the intricate interactions between humans and plants is more crucial than ever. Human-caused environmental changes, such as deforestation, pollution, and climate change, have a significant influence on the natural world, including plants.
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