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Genotypic and virulence dynamics of Phytophthora infestans populations in southwestern China 认领 引用
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作者 Xinjie Zhang Jinbin Wu +12 位作者 Xiao Wang Fan Zhang Lina Yang Luyao Wang Yaoyao Wu Zhenzhen Wang Weilin Chen Guoyu Yin Shengping Song Mingqing Dang Juan Zeng Han Chen Suomeng Dong 《Journal of Integrative Agriculture》 SCIE CAS CSCD 2026年第8期3307-3317,共11页
The oomycete pathogen Phytophthora infestans causes late blight disease that severely reduces potato production worldwide.Monitoring the genotypic and virulence dynamics of P.infestans populations is vital for managem... The oomycete pathogen Phytophthora infestans causes late blight disease that severely reduces potato production worldwide.Monitoring the genotypic and virulence dynamics of P.infestans populations is vital for management of late blight.Phytophthora infestans populations in southwestern China diversify in genotypes and virulence,but the most recent status of these populations remains elusive.In this study,218 isolates collected from six locations in southwestern China from 2019 to 2022 were analyzed for genotypic and virulence dynamics as well as effective management strategies.Phylogenetic analysis of simple sequence repeats-classified multi-locus genotypes(MLGs)revealed that these populations comprise three lineages,of which the EU lineage is dominant.These populations had overcome the resistance mediated by R3a,R3b and Rpi-blb3 and had an increased trend in overcoming the resistance mediated by Rpi-blb2,R8,Rpi-blb1 and Rpi-vnt1.1.The EU lineage consisted of 19 MLGs and the predominant genotype MLG24 significantly contributed to the pathotypic diversity of the EU lineage.In addition,two independent MLG24 isolates,CQ-22-16-1 and CQ-22-20-1,overcame the resistance mediated by all seven resistance genes and were virulent on 30 potato cultivars.Notably,two Solanum candolleanum relatives were highly resistant to these two highly virulent isolates.Furthermore,these two isolates could be controlled by three fungicides.In summary,this study elucidates the genotypic and virulence dynamics of P.infestans populations in southwestern China and provides valuable insights into effective control measures. 展开更多
关键词 potato Phytophthora infestans genotypic dynamics virulence dynamics
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Encapsulation of curcumin in chitosan-phytic acid(CS-PA)capsule:bioavailability,simulated gastrointestinal digestion,and colonic fermentation in vitro 认领 引用
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作者 Beibei Zhao Zixin Yang +1 位作者 Zhiyu Li Ben Niu 《Food Bioscience》 SCIE 2025年第6期3170-3177,共8页
A chitosan-phytic acid(CS-PA)capsule was developed for oral delivery of curcumin,enhancing its distribution and bioavailability in the colon.Curcumin was amorphized by the anti-solvent method,and the capsule’s loadin... A chitosan-phytic acid(CS-PA)capsule was developed for oral delivery of curcumin,enhancing its distribution and bioavailability in the colon.Curcumin was amorphized by the anti-solvent method,and the capsule’s loading capacity and encapsulation efficiency reached 40.00%±0.31%and 100%,respectively.FTIR results confirmed that curcumin was physically encapsulated in CS-PA,and two-dimensional Raman images clearly captured the distribution intensity of curcumin in the capsule core-shell structure.In addition,the curcumin in the capsule showed less than 5%release during simulated gastric digestion,and most of the curcumin release was located in the colon(cumulative release 92%),which effectively improved the bioavailability of curcumin.The in vitro simulated fermentation results demonstrated that the presence of curcumin capsules led to an increase in beneficial bacteria,such as Lachnospiraceae,Ruminococcaceae,and Parasutterella.Conversely,the abundance of harmful bacteria,specifically Collinsella,decreased.Additionally,curcumin capsules also promoted increased diversity within the gut microbiota. 展开更多
关键词 Curcumin Chitosan-phytic acid Encapsulation Bioavailability Gut microbiota
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