Fusarium head blight(FHB)is a disease caused by several Fusarium species,notably,F.culmorum and F.grami-nearum.These pathogens adversely affect the technological and sanitary qualities of cereal grains,particularly du...Fusarium head blight(FHB)is a disease caused by several Fusarium species,notably,F.culmorum and F.grami-nearum.These pathogens adversely affect the technological and sanitary qualities of cereal grains,particularly durum wheat.Under favorable environmental conditions and in susceptible varieties,these Fusarium species can significantly reduce both the quantity and quality of crops.This study evaluated the pathogenicity of the two Fusarium species(FC2006 and FG2008)in the growth of durum wheat coleoptiles.The plant material included four commercially grown parental varieties(G9,G10,G11,G12)and eight breeding lines(G1,G2,G3,G4,G5,G6,G7,G8).In vitro tests revealed that both Fusarium species significantly reduced the coleoptile growth across the studied varieties and lines(p≤0.001).The control test had an average coleoptile length of 37.87 mm.In contrast,seeds inoculated with FC2006 had an average length of 0.62 mm,and those inoculated with FG2008 had only 0.064 mm.Although there was a slight difference in aggressiveness between the two spe-cies,it was not statistically significant(p>0.05).Some variability was also noted in the responses of the durum wheat varieties and lines.The G8 genotype showed remarkable behavior in both isolates,with an average length of 1.83 mm for FC2006 and 0.4 mm for FG2008.The other genotypes showed total inhibition of coleoptile growth(0 mm).Thesefindings highlight the importance of conducting further research on the defense mechanisms of durum wheat against Fusarium and assessing the local varieties’pathogenicity to better explore the interactions between these pathogens and durum wheat genotypes under in vitro conditions.展开更多
Salinity stress is a major challenge for global agriculture,particularly in arid and semi-arid regions,limiting plant productivity due to water and soil salinity.These conditions particularly affect countries along th...Salinity stress is a major challenge for global agriculture,particularly in arid and semi-arid regions,limiting plant productivity due to water and soil salinity.These conditions particularly affect countries along the southern Mediterranean rim,including Algeria,which primarily focuses on pastoral and forage practices.This study investigates salinity tolerance and ecotypic variability in Vicia narbonensis L.,a fodder legume species recognized for its potential to reclaim marginal soils.Morphological,physiological,and biochemical responses were assessed in three ecotypes(eco2,eco9,and eco10)exposed to different salinity levels(low,moderate,and severe).The study was conducted using a completely randomized block design with three blocks per ecotype per dose.The results from the two-way analysis of variance demonstrate significant effects across nearly all attributes studied,revealing distinct ecotypic responses.These findings underscore variations in growth parameters,osmotic regulation mechanisms,and biochemical adjustments.The substantial diversity observed among these ecotypes in their response to salinity provides valuable insights for breeders addressing both agronomic and ecological challenges.Multivariate analyses,including Principal Component Analysis(PCA),revealed key variables distinguishing between ecotypes under salinity stress.Moreover,Classification based on Salinity Tolerance Indices(STI)further differentiated ecotypic performance with more precision,and this is because of the combination of the different parameters studied.These results open up new prospects for the development of strategies to improve the salinity tolerance of forage legumes.展开更多
The Atlas pistachio tree is a typically Mediterranean species,which represents an important forest heritage in the arid and semi-arid regions of Algeria.It is deeply rooted in the local population’s culture,making it...The Atlas pistachio tree is a typically Mediterranean species,which represents an important forest heritage in the arid and semi-arid regions of Algeria.It is deeply rooted in the local population’s culture,making it essential to better understand this species for its conservation and valorization.Through our work on 7 provenances of Pistacia atlantica distributed across different bioclimates in Algeria and based on 28 quantitative and qualitative leaf,trichome,and stomatal traits,it was revealed that the Atlas pistachio tree exhibits significant ecotypic variability linked to its habitat and a high adaptability to extreme conditions in its environments(aridity and altitude).Indeed,statistical analyses indicate a substantial heterogeneity in the studied characteristics among different ecotypes of P.atlantica.Genetic factors undoubtedly play a primary role in this variability,but environmental factors also exert a remarkable impact on this heterogeneity.Gender also plays a crucial role in this variability.Microphotographs of leaf samples taken under scanning electron microscopy(SEM),such as the density and type of trichomes,and form and position of stomates in the epidermis,can provide an important taxonomic tool for identifying Pistacia species and valuable insights into their adaptation to xeric conditions,thus enabling their use in desertification control projects and the rehabilitation of highly degraded forest environments such as those found in the“Green Dam”initiative.展开更多
基金This Research was funded by la Direction Générale de la Recherche Scientifique et du Développement Technologique(DGRSDT),Algeria,and the Researchers Supporting Project number(RSP2024R390),King Saud University,Riyadh,Saudi Arabia.
文摘Fusarium head blight(FHB)is a disease caused by several Fusarium species,notably,F.culmorum and F.grami-nearum.These pathogens adversely affect the technological and sanitary qualities of cereal grains,particularly durum wheat.Under favorable environmental conditions and in susceptible varieties,these Fusarium species can significantly reduce both the quantity and quality of crops.This study evaluated the pathogenicity of the two Fusarium species(FC2006 and FG2008)in the growth of durum wheat coleoptiles.The plant material included four commercially grown parental varieties(G9,G10,G11,G12)and eight breeding lines(G1,G2,G3,G4,G5,G6,G7,G8).In vitro tests revealed that both Fusarium species significantly reduced the coleoptile growth across the studied varieties and lines(p≤0.001).The control test had an average coleoptile length of 37.87 mm.In contrast,seeds inoculated with FC2006 had an average length of 0.62 mm,and those inoculated with FG2008 had only 0.064 mm.Although there was a slight difference in aggressiveness between the two spe-cies,it was not statistically significant(p>0.05).Some variability was also noted in the responses of the durum wheat varieties and lines.The G8 genotype showed remarkable behavior in both isolates,with an average length of 1.83 mm for FC2006 and 0.4 mm for FG2008.The other genotypes showed total inhibition of coleoptile growth(0 mm).Thesefindings highlight the importance of conducting further research on the defense mechanisms of durum wheat against Fusarium and assessing the local varieties’pathogenicity to better explore the interactions between these pathogens and durum wheat genotypes under in vitro conditions.
基金Direction Generale de la Recherche Scientifique et du Developpement Technologique(DGRSDT)Algeria,and the Researchers Supporting Project No.(RSP2025R390),King Saud University,Riyadh,Saudi Arabia.
文摘Salinity stress is a major challenge for global agriculture,particularly in arid and semi-arid regions,limiting plant productivity due to water and soil salinity.These conditions particularly affect countries along the southern Mediterranean rim,including Algeria,which primarily focuses on pastoral and forage practices.This study investigates salinity tolerance and ecotypic variability in Vicia narbonensis L.,a fodder legume species recognized for its potential to reclaim marginal soils.Morphological,physiological,and biochemical responses were assessed in three ecotypes(eco2,eco9,and eco10)exposed to different salinity levels(low,moderate,and severe).The study was conducted using a completely randomized block design with three blocks per ecotype per dose.The results from the two-way analysis of variance demonstrate significant effects across nearly all attributes studied,revealing distinct ecotypic responses.These findings underscore variations in growth parameters,osmotic regulation mechanisms,and biochemical adjustments.The substantial diversity observed among these ecotypes in their response to salinity provides valuable insights for breeders addressing both agronomic and ecological challenges.Multivariate analyses,including Principal Component Analysis(PCA),revealed key variables distinguishing between ecotypes under salinity stress.Moreover,Classification based on Salinity Tolerance Indices(STI)further differentiated ecotypic performance with more precision,and this is because of the combination of the different parameters studied.These results open up new prospects for the development of strategies to improve the salinity tolerance of forage legumes.
基金their appreciation to the Researchers Supporting Project number(RSP2024R390)King Saud University,Riyadh,Saudi Arabia and la Direction Générale de la Recherche Scientifique et du Développement Technologique(DGRSDT),Algeria.
文摘The Atlas pistachio tree is a typically Mediterranean species,which represents an important forest heritage in the arid and semi-arid regions of Algeria.It is deeply rooted in the local population’s culture,making it essential to better understand this species for its conservation and valorization.Through our work on 7 provenances of Pistacia atlantica distributed across different bioclimates in Algeria and based on 28 quantitative and qualitative leaf,trichome,and stomatal traits,it was revealed that the Atlas pistachio tree exhibits significant ecotypic variability linked to its habitat and a high adaptability to extreme conditions in its environments(aridity and altitude).Indeed,statistical analyses indicate a substantial heterogeneity in the studied characteristics among different ecotypes of P.atlantica.Genetic factors undoubtedly play a primary role in this variability,but environmental factors also exert a remarkable impact on this heterogeneity.Gender also plays a crucial role in this variability.Microphotographs of leaf samples taken under scanning electron microscopy(SEM),such as the density and type of trichomes,and form and position of stomates in the epidermis,can provide an important taxonomic tool for identifying Pistacia species and valuable insights into their adaptation to xeric conditions,thus enabling their use in desertification control projects and the rehabilitation of highly degraded forest environments such as those found in the“Green Dam”initiative.
