Variations of the agroecological potential of Moringa oleifera Lam., in the presence of climate change scenarios in Veracruz, Mexico

Objective: This research aimed to identify the area variations with agroecological potential for Moringa oleifera Lam. cultivation (Moringa), derived from the effects of climate change at the near horizon of 2039 in the State of Veracruz, Mexico.Methodology: The current climatic agroecological potential layers for the state of Veracruz were used, and a general circulation model (MGC) HADGEM2-ES for the RCP8.5 scenario projected to the near future 2039, with five categories: Very High, High, Medium, Low and Very, Low potential.Results: An area with a Very High category of 1,057,415 hectares (ha) was identified, which, corresponds to an expansion of 4.9% with respect to the current size. determining that climate change favors the cultivation of Moringa in three sizes of the State. The most significant variation with an increase in the Very high category (115.58%) was identified in the south of the Veracruz state, followed by the central size (110.17%). The greatest decrease (-4.53%) occurred in the north of the entity.Limitations on study: Only the regions with Very High potential were identified without considering those with High, Medium, Low, and Very Low agroecological potential.Conclusions: The projections under climate change conditions to the horizon of 2039 highlight the expansion of regions with Very High potential in 19% of the Veracruz territory for the cultivation of the species.Objective: This research aimed to identify variations in areas with agroecological potential for Moringa oleifera Lam. (Moringa) cultivation, derived from the effects of climate change to the near horizon of 2039 in the state of Veracruz, Mexico. Design/methodology/approach: The future scenario considered the current agroecological potential in the State and the general circulation model (GCM) HADGEM2-ES for the RCP8.5 scenario projected to the near future, 2039, with five categories: Very High, High, Medium, Low, and Very Low potential. Results: An area with a Very High category of 1,057,415 hectares (ha) was identified, which corresponds to an expansion of 4.9% with respect to the current size. It was determined that climate change favors the cultivation of Moringa in three areas of the state. The most significant variation with an increase in the Very High category (115.58%) was identified in southern Veracruz, followed by the central area (110.17%). The greatest decrease (-4.53%) occurred in the north of the state. Limitations on study/implications: Only the regions with Very High potential were identified, without considering those with High, Medium, Low, and Very Low agroecological potential. Findings/conclusions: The projections under climate change conditions to the horizon of 2039 highlight the expansion of regions with Very High potential for cultivating the species in 19% of the Veracruz territory

Survival of Clinical and Poultry-Derived Isolates of Campylobacter jejuni at a Low Temperature (4°C)

Campylobacter jejuni is a leading cause of bacterial gastroenteritis in humans, and contamination of poultry has been implicated in illness. The bacteria are fastidious in terms of their temperature requirements, being unable to grow below ca. 31°C, but have been found to be physiologically active at lower temperatures and to tolerate exposure to low temperatures in a strain-dependent manner. In this study, 19 field isolates of C. jejuni (10 of clinical and 9 of poultry origin) were studied for their ability to tolerate prolonged exposure to low temperature (4°C). Although substantial variability was found among different strains, clinical isolates tended to be significantly more likely to remain viable following cold exposure than poultry-derived strains. In contrast, the relative degree of tolerance of the bacteria to freezing at −20°C and freeze-thawing was strain specific but independent of strain source (poultry versus clinical) and degree of cold (4°C) tolerance