Significant variations in global temperatures and weather patterns over time are known as climate change.Although it occurs naturally,human activities—particularly the burning of fossil fuels,deforestation,and indust...Significant variations in global temperatures and weather patterns over time are known as climate change.Although it occurs naturally,human activities—particularly the burning of fossil fuels,deforestation,and industrial processes—are accelerating these changes,which have various detrimental effects on the environment.This review aims to highlight the edapho-climatic requirements of this cactus and the advantages and challenges of its cultivation to mitigate climate change.The prickly pear cactus is a plant with numerous financial and environmental advantages.It needs well-draining,sandy or gravelly soil to avoid root rot and do best in full sun.With a strong tolerance for dryness,they thrive in arid or semi-arid regions with scorching summers and prefer sparing watering.Despite being suited to tropical climates,some species can tolerate freezing temperatures and sporadic frost.Once established,these hardy plants require little care and thrive in nutrient-poor soils,which makes them perfect for xeriscaping or challenging growing environments.Because of its high water use efficiency ratio and low water requirements,prickly pear can be grown in marginally dry and semi-arid areas.The cactus does contribute to the ecological and socioeconomic fight against climate change.For instance,it supports sustainable agriculture,biodiversity preservation,soil restoration,carbon sequestration,and effective water usage.Demarcating dry and semi-arid zones and fostering employment in these areas is beneficial from a socioeconomic standpoint.The prickly pear’s traditional cultural heritage supports its current economic function as a crop that can withstand drought.While ecological threats necessitate balanced management,this adaptability promotes sustainable growth.Innovations in bioenergy and value-added goods build on its historical applications,increasing its socioeconomic advantages and,eventually,its worldwide significance.展开更多
This study evaluates the impact of heavy metals(zinc,copper and cadmium)on the development and metabolic responses of the maize(Zea mays)variety“Torro Plus”.Seeds were cultivated on MS medium enriched with progressi...This study evaluates the impact of heavy metals(zinc,copper and cadmium)on the development and metabolic responses of the maize(Zea mays)variety“Torro Plus”.Seeds were cultivated on MS medium enriched with progressively higher concentrations of heavy metals(50,100 and 150μM),and plants were analyzed after 21 days.The results show a significant reduction in morphological parameters,notably an 87.28%decrease in the fresh weight of aerial parts and a 69.93%decrease in the fresh weight of roots under 150μM of Cd.Chlorophyll a,b and total content also decreased drastically,reaching a maximum reduction of 74.31%under Cd(150μM).In contrast,secondary metabolites such as proline and flavonoids increased,with a maximum proline accumulation of 0.71 mg/g under Cu(150μM)and a flavonoid concentration reaching 176.33 mg/g under Cu(100μM).These results show mechanisms of adaptation to stress,notably the accumulation of flavonoids and proline,while highlighting the increased toxicity of cadmium at high doses.These data are promising for applications in phytoremediation and sustainable agriculture.This study provides important data on the physiological and biochemical responses of plants to heavy metals and opens up prospects for phytoremediation applications.展开更多
Oranges are classified as the most traded fruit variety worldwide.The diversification of the varietal profile of this group is among the objectives of the Citrus breeding program.So,the creation of new triploid hybrid...Oranges are classified as the most traded fruit variety worldwide.The diversification of the varietal profile of this group is among the objectives of the Citrus breeding program.So,the creation of new triploid hybrids via immature embryos rescue,can lead to an increase in gene pool and produce seedless varieties.In addition,flow cytometry was successfully used for analyzing ploidy levels and genetic origin of triploid plants.The present study was aimed at optimizing immature embryos in vitro germination and plantlet development based on medium chemical composition of the two orange varieties,Pineapple and Parson Brown.When the fruit gets matured,they are harvested and the seeds extracted are classified according to their size.Only those which are small are cultured in a sterile Murashige and Tucker(MT)basal medium.The different concentrations of growth regulators are put to the test in order to gain the best medium for seeds development.M1(MT+1 mg/L gibberellic acid(GA3)),M2(MT+1 mg/L kenitin+0.5 mg/L 6-benzylaminopurine(BAP)+0.1 naphthalene acetic acid(NAA)),M3(MT+25 mg/L adenine sulfate(ADS)),M4(MT+0.5 mg/L kenitin+0.5 mg/L BAP+1 mg/L GA3).Percentage of germinated embryos(PGE)is the highest in M3 with 100%and 90%for both Pineapple and Parson Brown varieties,respectively.In addition,the germination interval average(GIA)is shorter in M1 for both varieties,which takes 6 d and 7 d,respectively.As regard to speed seedling growth(mm/week),both varieties undergo significant change in all four mediums.Similarly,the highest rate of acclimatization for the Pineapple and Parson Brown varieties is 80%and 90%in M1.In general,the smaller the embryos are,the more sensitive they are to culture medium composition.It is therefore essential to optimize the medium components in order to stimulate their in vitro development.Therefore,M1(MT+1 mg/L GA3)remains the best to promote short term good germination and produce a better rate of acclimatization.展开更多
文摘Significant variations in global temperatures and weather patterns over time are known as climate change.Although it occurs naturally,human activities—particularly the burning of fossil fuels,deforestation,and industrial processes—are accelerating these changes,which have various detrimental effects on the environment.This review aims to highlight the edapho-climatic requirements of this cactus and the advantages and challenges of its cultivation to mitigate climate change.The prickly pear cactus is a plant with numerous financial and environmental advantages.It needs well-draining,sandy or gravelly soil to avoid root rot and do best in full sun.With a strong tolerance for dryness,they thrive in arid or semi-arid regions with scorching summers and prefer sparing watering.Despite being suited to tropical climates,some species can tolerate freezing temperatures and sporadic frost.Once established,these hardy plants require little care and thrive in nutrient-poor soils,which makes them perfect for xeriscaping or challenging growing environments.Because of its high water use efficiency ratio and low water requirements,prickly pear can be grown in marginally dry and semi-arid areas.The cactus does contribute to the ecological and socioeconomic fight against climate change.For instance,it supports sustainable agriculture,biodiversity preservation,soil restoration,carbon sequestration,and effective water usage.Demarcating dry and semi-arid zones and fostering employment in these areas is beneficial from a socioeconomic standpoint.The prickly pear’s traditional cultural heritage supports its current economic function as a crop that can withstand drought.While ecological threats necessitate balanced management,this adaptability promotes sustainable growth.Innovations in bioenergy and value-added goods build on its historical applications,increasing its socioeconomic advantages and,eventually,its worldwide significance.
文摘This study evaluates the impact of heavy metals(zinc,copper and cadmium)on the development and metabolic responses of the maize(Zea mays)variety“Torro Plus”.Seeds were cultivated on MS medium enriched with progressively higher concentrations of heavy metals(50,100 and 150μM),and plants were analyzed after 21 days.The results show a significant reduction in morphological parameters,notably an 87.28%decrease in the fresh weight of aerial parts and a 69.93%decrease in the fresh weight of roots under 150μM of Cd.Chlorophyll a,b and total content also decreased drastically,reaching a maximum reduction of 74.31%under Cd(150μM).In contrast,secondary metabolites such as proline and flavonoids increased,with a maximum proline accumulation of 0.71 mg/g under Cu(150μM)and a flavonoid concentration reaching 176.33 mg/g under Cu(100μM).These results show mechanisms of adaptation to stress,notably the accumulation of flavonoids and proline,while highlighting the increased toxicity of cadmium at high doses.These data are promising for applications in phytoremediation and sustainable agriculture.This study provides important data on the physiological and biochemical responses of plants to heavy metals and opens up prospects for phytoremediation applications.
文摘Oranges are classified as the most traded fruit variety worldwide.The diversification of the varietal profile of this group is among the objectives of the Citrus breeding program.So,the creation of new triploid hybrids via immature embryos rescue,can lead to an increase in gene pool and produce seedless varieties.In addition,flow cytometry was successfully used for analyzing ploidy levels and genetic origin of triploid plants.The present study was aimed at optimizing immature embryos in vitro germination and plantlet development based on medium chemical composition of the two orange varieties,Pineapple and Parson Brown.When the fruit gets matured,they are harvested and the seeds extracted are classified according to their size.Only those which are small are cultured in a sterile Murashige and Tucker(MT)basal medium.The different concentrations of growth regulators are put to the test in order to gain the best medium for seeds development.M1(MT+1 mg/L gibberellic acid(GA3)),M2(MT+1 mg/L kenitin+0.5 mg/L 6-benzylaminopurine(BAP)+0.1 naphthalene acetic acid(NAA)),M3(MT+25 mg/L adenine sulfate(ADS)),M4(MT+0.5 mg/L kenitin+0.5 mg/L BAP+1 mg/L GA3).Percentage of germinated embryos(PGE)is the highest in M3 with 100%and 90%for both Pineapple and Parson Brown varieties,respectively.In addition,the germination interval average(GIA)is shorter in M1 for both varieties,which takes 6 d and 7 d,respectively.As regard to speed seedling growth(mm/week),both varieties undergo significant change in all four mediums.Similarly,the highest rate of acclimatization for the Pineapple and Parson Brown varieties is 80%and 90%in M1.In general,the smaller the embryos are,the more sensitive they are to culture medium composition.It is therefore essential to optimize the medium components in order to stimulate their in vitro development.Therefore,M1(MT+1 mg/L GA3)remains the best to promote short term good germination and produce a better rate of acclimatization.
