Among the crop production factors,preceding crop and tillage management affect the sustainable use of soil resources and ultimately crop growth and productivity.This study aimed at investigating the impact of precedin...Among the crop production factors,preceding crop and tillage management affect the sustainable use of soil resources and ultimately crop growth and productivity.This study aimed at investigating the impact of preceding winter crops(grass or legume)and different tillage systems on forage yield,quality and nutritive values of three summer grass(Sudan grass,pearl millet and teosinte)and two legume forage crops(cowpea and guar)under arid conditions.The results exhibited that growing forage crops after legumes(as berseem clover)produced the highest fresh and dry forage yields and quality attributes compared with grasses(as wheat)with the exception of crude fiber content,which was decreased.Moreover,tillage practices showed positive impact on forage yields and quality attributes.The maximum forage yields and quality parameters were recorded under conventional tillage(CT)practice compared with reduced tillage(RT)and no-tillage(NT)systems.Among the evaluated crops,the highest yields of fresh forage,dry forage,crude fiber,crude protein and total digestible nutrient were exhibited by grass forage crops(Sudan grass,pearl millet and teosinte),whereas the highest crude protein content and the digestible energy values were produced by legume forage crops(cowpea and guar).The maximum fresh forage,dry forage,crude fiber,crude protein,total digestible nutrient and digestible crude protein yields were produced by pearl millet followed by Sudan grass under CT and RT after berseem clover.The highest net return was recorded by sowing pearl millet after berseem clover and applying CT followed by RT practices,which could be recommended for the commercial production.Moreover,it could be assumed that the combination of growing grass forage crops after legume crops under CT or RT systems could enhance forage crop yield and quality with an improvement in soil properties for sustainable agriculture with low cost and the highest net income.展开更多
Oleaginous fungi can convert a variety of substrates into lipids,frequently containing(20-70%,w/w)of their cell dry weight(CDW),which positions them as promising candidates for sustainable lipid production.However,the...Oleaginous fungi can convert a variety of substrates into lipids,frequently containing(20-70%,w/w)of their cell dry weight(CDW),which positions them as promising candidates for sustainable lipid production.However,the interplay of calcium(Ca^(2+))in regulating lipid accumulation remains unclear.Therefore,the effect of different Ca^(2+)concentrations on the oleaginous capacity of Mucor circinelloides strain WJ11 was evaluated.Hence,WJ11 was fermented for 96 h using different Ca^(2+)levels.Maximum CDW(17.2 g/L)and lipid yield(42%,w/w)were achieved at 2.5 and 0.3 g/L Ca^(2+),respectively,compared to 15.8 g/L CDW and(34%,w/w)lipid content in the control(0.1 g/L Ca^(2+)).High Ca^(2+)levels(12.5-20 g/L)improved the production of certain fatty acids(FAs),whereas optimal levels favoured the accumulation of stearic acid(C18:0)andγ-linolenic acid(C18:3)at designated time intervals.Furthermore,the calcineurin catalytic subunits(CnaA,CnaB,and CnaC)and regulatory subunit(CAR1)were significantly upregulated after 12 h of fermentation.Additionally,lipogenic enzyme activity analysis of key genes involved in lipid biosynthesis exhibited upregulation at different Ca^(2+)concentrations.These findings indicated that raised Ca^(2+)levels can significantly boost lipid production in industrial fermentations.This study is the first to investigate the role of Ca^(2+)in the oleaginous fungus M.circinelloides,providing new avenues into the integrated functions of Ca^(2+)and its signaling pathways in lipid metabolism,particularly in oleaginous fungi.展开更多
This study conducted a comparative analysis to characterize crude polysaccharides from seven selected strains of Auricularia cornea in China,including commercial,hybrid,and wild domesticated strains.The obtained crude...This study conducted a comparative analysis to characterize crude polysaccharides from seven selected strains of Auricularia cornea in China,including commercial,hybrid,and wild domesticated strains.The obtained crude polysaccharide samples were analyzed using electron microscope-energy dispersive X-ray(SEM-EDX),Fourier transform infrared(FTIR)spectroscopy,and for their monosaccharide composition.The results revealed that crude polysaccharide samples were mainly composed of 85.9%mannose and 12.3%glucose.Among the strains tested,Ac1 and Ac33 exhibited significantly higher total polysaccharide content(215.9±2.4 mg/g and 200.3±1.5 mg/g,respectively)and phenolic content(40.2±4.0 mg GAE/g and 44.2±2.7 mg GAE/g,respectively).Additionally,Ac33 and Ac24 showed the highest levels of DPPH radical scavenging and ABTS scavenging ability among the strains tested.Overall,the results suggest that the crude polysaccharides from A.cornea have the potential as a natural source of antioxidant and antimicrobial agents and could be developed into functional nutritional foods.展开更多
基金the Agricultural Research Center,Giza,Egypt,and the Taif University Researchers Supporting Project(TURSP-2020/111),Taif University,Taif,Saudi Arabia for the technical and financial support to this research。
文摘Among the crop production factors,preceding crop and tillage management affect the sustainable use of soil resources and ultimately crop growth and productivity.This study aimed at investigating the impact of preceding winter crops(grass or legume)and different tillage systems on forage yield,quality and nutritive values of three summer grass(Sudan grass,pearl millet and teosinte)and two legume forage crops(cowpea and guar)under arid conditions.The results exhibited that growing forage crops after legumes(as berseem clover)produced the highest fresh and dry forage yields and quality attributes compared with grasses(as wheat)with the exception of crude fiber content,which was decreased.Moreover,tillage practices showed positive impact on forage yields and quality attributes.The maximum forage yields and quality parameters were recorded under conventional tillage(CT)practice compared with reduced tillage(RT)and no-tillage(NT)systems.Among the evaluated crops,the highest yields of fresh forage,dry forage,crude fiber,crude protein and total digestible nutrient were exhibited by grass forage crops(Sudan grass,pearl millet and teosinte),whereas the highest crude protein content and the digestible energy values were produced by legume forage crops(cowpea and guar).The maximum fresh forage,dry forage,crude fiber,crude protein,total digestible nutrient and digestible crude protein yields were produced by pearl millet followed by Sudan grass under CT and RT after berseem clover.The highest net return was recorded by sowing pearl millet after berseem clover and applying CT followed by RT practices,which could be recommended for the commercial production.Moreover,it could be assumed that the combination of growing grass forage crops after legume crops under CT or RT systems could enhance forage crop yield and quality with an improvement in soil properties for sustainable agriculture with low cost and the highest net income.
基金supported by the National Natural Science Foundation of China under Grant(No.31972851)the Shandong Province Small and Medium Enterprises Innovation Ability Enhancement Project(grant No.2021TSGC1281 and 2023TSGC0050)supporting this work through project number(TU-DSPP-2024-186).
文摘Oleaginous fungi can convert a variety of substrates into lipids,frequently containing(20-70%,w/w)of their cell dry weight(CDW),which positions them as promising candidates for sustainable lipid production.However,the interplay of calcium(Ca^(2+))in regulating lipid accumulation remains unclear.Therefore,the effect of different Ca^(2+)concentrations on the oleaginous capacity of Mucor circinelloides strain WJ11 was evaluated.Hence,WJ11 was fermented for 96 h using different Ca^(2+)levels.Maximum CDW(17.2 g/L)and lipid yield(42%,w/w)were achieved at 2.5 and 0.3 g/L Ca^(2+),respectively,compared to 15.8 g/L CDW and(34%,w/w)lipid content in the control(0.1 g/L Ca^(2+)).High Ca^(2+)levels(12.5-20 g/L)improved the production of certain fatty acids(FAs),whereas optimal levels favoured the accumulation of stearic acid(C18:0)andγ-linolenic acid(C18:3)at designated time intervals.Furthermore,the calcineurin catalytic subunits(CnaA,CnaB,and CnaC)and regulatory subunit(CAR1)were significantly upregulated after 12 h of fermentation.Additionally,lipogenic enzyme activity analysis of key genes involved in lipid biosynthesis exhibited upregulation at different Ca^(2+)concentrations.These findings indicated that raised Ca^(2+)levels can significantly boost lipid production in industrial fermentations.This study is the first to investigate the role of Ca^(2+)in the oleaginous fungus M.circinelloides,providing new avenues into the integrated functions of Ca^(2+)and its signaling pathways in lipid metabolism,particularly in oleaginous fungi.
基金supported by China Agriculture Research System(No.CARS-20)National Key Research and Development Program of China(2023YFD1201604-4)+2 种基金the project of“one thousand talents plan”in Jiangxi Province,Chinathe collaborative project on studying the domestication and selection of edible and medicinal fungi resources in Zambia between Jilin Agricultural University and University of Zambiasupporting this work through project(No.TU-DSPP-2024-186).
文摘This study conducted a comparative analysis to characterize crude polysaccharides from seven selected strains of Auricularia cornea in China,including commercial,hybrid,and wild domesticated strains.The obtained crude polysaccharide samples were analyzed using electron microscope-energy dispersive X-ray(SEM-EDX),Fourier transform infrared(FTIR)spectroscopy,and for their monosaccharide composition.The results revealed that crude polysaccharide samples were mainly composed of 85.9%mannose and 12.3%glucose.Among the strains tested,Ac1 and Ac33 exhibited significantly higher total polysaccharide content(215.9±2.4 mg/g and 200.3±1.5 mg/g,respectively)and phenolic content(40.2±4.0 mg GAE/g and 44.2±2.7 mg GAE/g,respectively).Additionally,Ac33 and Ac24 showed the highest levels of DPPH radical scavenging and ABTS scavenging ability among the strains tested.Overall,the results suggest that the crude polysaccharides from A.cornea have the potential as a natural source of antioxidant and antimicrobial agents and could be developed into functional nutritional foods.
