#phytotoxicity

[loong-shern-blog]

Phytotoxicity on rose apple tree due to pesticide.

[oaresearchpaper]

Morphometric and biochemical responses of rice seedlings to heavy metal stress mitigated by Bacillus subtilis

This study evaluated the role of Bacillus subtilis in mitigating cadmium (Cd) and arsenic (As) stress (100 mM) in three rice cultivars (ADT 36, CO 51, and TPS 5). Twelve bacterial species were isolated from soil, with Bacillus spp. selected for their adaptability and plant growth-promoting traits. Heavy metal stress significantly reduced root and shoot growth, biomass, pigment levels, and protein and proline contents, while increasing phenol, soluble sugars, and Na⁺ accumulation. Cd caused stronger growth inhibition, whereas As had a greater impact on pigment biosynthesis. Inoculation with B. subtilis enhanced seedling vigor, improved pigment retention, restored protein and proline levels, and reduced phenol and sugar accumulation across cultivars. Ionic balance was also improved, with lower Na⁺ and higher Ca²⁺ and K⁺ compared to stress plants. Among the cultivars, CO 51 and TPS 5 showed the strongest recovery, while ADT 36 exhibited moderate tolerance. Overall, B. subtilis effectively alleviates heavy metal–induced phytotoxicity in rice by improving morphometric, biochemical, and ionic traits, demonstrating its potential for sustainable phytoremediation.

[oaresearchpaper]

Moringa pods (Moringa oleifera) and katakataka leaves (Kalanchoe pinnata) extract as a natural-derived medical patch against Staphylococcus aureus

This study investigated the effects of Moringa pods (Moringa oleifera) and Katakataka leaves (Kalanchoe pinnata) extracts on Staphylococcus aureus (S. aureus), a bacterium often causing skin infections. The researchers prepared ten treatments using a 95% ethyl alcohol solution and dried plants, which were then tested for their inhibitory effects on S. aureus growth. The results showed that treatments with Moringa pods extract, both alone and combined with a medical patch, significantly inhibited S. aureus growth, with zones of inhibition measuring 2.4cm and 2.7cm respectively. Conversely, Katakataka leaves extract showed little to no inhibition and even seemed to facilitate S. aureus growth. Statistical analysis using One-way ANOVA and Tukey’s HSD test revealed significant differences between treatments, with those containing a higher percentage of Moringa pods extract proving more effective. This suggests that Moringa pods extract could be a potent natural-derived medical patch against S. aureus.

[oaresearchpaper]

Natural Patch Power: Moringa Pods and Katakataka Leaves vs. Staphylococcus aureus | InformativeBD

This study investigated the effects of Moringa pods (Moringa oleifera) and Katakataka leaves (Kalanchoe pinnata) extracts on Staphylococcus aureus (S. aureus), a bacterium often causing skin infections. The researchers prepared ten treatments using a 95% ethyl alcohol solution and dried plants, which were then tested for their inhibitory effects on S. aureus growth. The results showed that treatments with Moringa pods extract, both alone and combined with a medical patch, significantly inhibited S. aureus growth, with zones of inhibition measuring 2.4cm and 2.7cm respectively. Conversely, Katakataka leaves extract showed little to no inhibition and even seemed to facilitate S. aureus growth. Statistical analysis using One-way ANOVA and Tukey’s HSD test revealed significant differences between treatments, with those containing a higher percentage of Moringa pods extract proving more effective. This suggests that Moringa pods extract could be a potent natural-derived medical patch against S. aureus.

[oaresearchpaper]

This study investigated the effects of Moringa pods (Moringa oleifera) and Katakataka leaves (Kalanchoe pinnata) extracts on Staphylococcus aureus (S. aureus), a bacterium often causing skin infections. The researchers prepared ten treatments using a 95% ethyl alcohol solution and dried plants, which were then tested for their inhibitory effects on S. aureus growth. The results showed that treatments with Moringa pods extract, both alone and combined with a medical patch, significantly inhibited S. aureus growth, with zones of inhibition measuring 2.4cm and 2.7cm respectively. Conversely, Katakataka leaves extract showed little to no inhibition and even seemed to facilitate S. aureus growth. Statistical analysis using One-way ANOVA and Tukey’s HSD test revealed significant differences between treatments, with those containing a higher percentage of Moringa pods extract proving more effective. This suggests that Moringa pods extract could be a potent natural-derived medical patch against S. aureus.

[oaresearchpaper]

Toxic heavy metals like cadmium (Cd) contaminated industrial wastes and effluents are being discharged directly to soils. Moreover, non-judicious use of chemical fertilizers especially phosphate have aggravated the Cd level of soil. Thus, the polluted soils need to be amended for crop production. With this idea in mind, pot experiment was conducted at Bangladesh Agricultural University (BAU) net-house to examine the effect of lime and organic amendments on yield and Cd concentrations in maize grown in polluted soils. There were four treatments: no soil amendment (Control), Lime 10g pot-1, cow dung (CD) 80g pot-1 and poultry manure (PM) 80g pot-1. The addition of lime and organic matter (CD and PM) significantly increased the grain and stover yields of maize. Application of lime and organic manure to the soils reduced Cd concentration in the plant under study as compared with control. Overall, the addition of lime and organic manure to the soils increased the maize yields and reduced the Cd concentration in the plant as well as decrease the heavy metal phytoavailability under study as compared with control.