Change in the Physiological Aspects of Soybean Caused by Infestation by Bemisia tabaci MEAM1

Abstract

The whitefly leads extensive damage to plants through direct feeding, honeydew secretion, plant physiological disorders, and vectoring plant viruses. This study aimed to evaluate the physiological characteristics of susceptible and resistant soybean cultivars to B. tabaci. The experiments were conducted in a greenhouse. Eleven soybean cultivars were selected and infested with 100 adults of B. tabaci at the V3 stage. The evaluation of photosynthetic parameters, such as photosynthetic rate, leaf transpiration, stomatal conductance, and internal CO2 concentration, revealed that B. tabaci infestation influenced gas exchange in soybean plants. The photosynthetic rate was higher in cultivars AS3810 and M8349 during the V6 stage. Infestations led to alterations in photosynthetic parameters, suggesting increased energy demand to maintain photosynthetic activity. However, the response to infestation varied among different cultivars, indicating varying levels of resistance and tolerance to the whitefly's damage. Additionally, the impact of infestation was more significant during the vegetative phenological. In conclusion, B. tabaci infestation affects soybean plants' physiology, leading to changes in gas exchange parameters and water use efficiency. The response to infestation varied among soybean cultivars, suggesting potential differences in resistance to the pest. The study highlights the importance of evaluating the physiological impact of whitefly infestations on soybean.

Nontuberculous mycobacteria in patients of a specialty hospital

“…Efforts have been made in recent years by researchers at FUNED-MG to increase and improve the identification of NTM. Some studies report that the drug susceptibility testing have great value in guiding therapy, particularly when tested for aminoglycosides, rifampicin, and ethambutol, in addition to genotypic tests to detect mutations responsible for drug resistance 5,11,12 . Microbiological diagnosis, even if insufficient, is essential for the diagnosis of an infection.…”

“…Few studies have described the prevalence of NTM in the extrapulmonary form; however, these differences in involvement may be due to environmental influences and the dynamics of the disease 12,16 .…”