Salinization of agricultural land is becoming increasingly severe worldwide,posing a significant threat to food security.The exogenous application of bioactive substances has been widely used to enhance plant resistan...Salinization of agricultural land is becoming increasingly severe worldwide,posing a significant threat to food security.The exogenous application of bioactive substances has been widely used to enhance plant resistance to salt stress.In this study,we used corn steep liquor(CSL),myo-inositol(MI),and their combination to improve salt tolerance in Chinese cabbage(Brassica rapa L.ssp.pekinensis)under salt stress conditions.All three treatments significantly increased plant biomass and nutrient uptake,and improved soil physicochemical properties,while alleviating oxidative damage and ion toxicity.展开更多
This study explores the broad-spectrum application of OsRALF26,a small secreted peptide belonging to the rapid alkalinization factor(RALF)family in rice.We found that the rice genome carries numerous lineage-specific ...This study explores the broad-spectrum application of OsRALF26,a small secreted peptide belonging to the rapid alkalinization factor(RALF)family in rice.We found that the rice genome carries numerous lineage-specific OsRALFs,suggesting that this evolutionary expansion could be the result of an arms race with pathogens.Among them,we focused on the Oryza-specific Os RALF26 and its closest homolog,OsRALF27,analyzing their effects across a range of plant species from monocots to dicots.The exogenous application of OsRALF26 significantly reduced bacterial populations in rice challenged with Xanthomonas oryzae pv.oryzae(Xoo)and in Arabidopsis and tomato challenged with Pseudomonas syringae pv.tomato DC3000(Pst DC3000),whereas Os RALF27 did not enhance resistance.展开更多
RNA interference(RNAi,also known as RNA silencing)is one of the most important plant defense re-sponses against viral invasion.Although major components of the RNAi pathway,steps leading to viral small interfering RNA...RNA interference(RNAi,also known as RNA silencing)is one of the most important plant defense re-sponses against viral invasion.Although major components of the RNAi pathway,steps leading to viral small interfering RNA biogenesis,and viral counterdefense strategies via RNAi suppressors have been well studied,the broader roles of RNAi in viral infection and seed transmission remain less thoroughly char-acterized.In particular,the increasing complexity of RNAi-associated mechanisms and their integration with other biological processes have not been comprehensively summarized.Increasing numbers of studies have identified non-canonical RNAi pathways,novel host factors involved in RNAi,and the possi-bility of small RNAs acting across kingdoms to modulate plant-virus-vector tritrophic interactions.In this review,we provide an overview of the roles of RNAi in plant viral infections and describe recent advances,with emphasis on the discoveries of novel positive and negative RNAi regulators,potential signaling path-ways upstream and downstream of antiviral RNAi,and the prospects and challenges of double-stranded RNA applications,either expressed from transgenes or supplied exogenously via spraying.We also discuss how these findings reshape current views on antiviral RNAi,highlight remaining knowledge gaps,and examine how these advances influence plant-virus co-evolution while informing strategies for managing plant virus diseases and reducing their impact.展开更多
基金supported by the sub-project“Research and Application of In-Situ Value-Added Water-Soluble Fertilizer Application Technology”(Grant No.2023YFD1700204-3)under the 14th Five-Year National Key R&D Program Project“Development and Industrialization of Novel Green Value-Added Fertilizers”.
文摘Salinization of agricultural land is becoming increasingly severe worldwide,posing a significant threat to food security.The exogenous application of bioactive substances has been widely used to enhance plant resistance to salt stress.In this study,we used corn steep liquor(CSL),myo-inositol(MI),and their combination to improve salt tolerance in Chinese cabbage(Brassica rapa L.ssp.pekinensis)under salt stress conditions.All three treatments significantly increased plant biomass and nutrient uptake,and improved soil physicochemical properties,while alleviating oxidative damage and ion toxicity.
基金supported by the National Research Foundation of Korea grant funded by the Korea government(Grant Nos.NRF-2020R1A2C1007778 and RS-2024-00454908)。
文摘This study explores the broad-spectrum application of OsRALF26,a small secreted peptide belonging to the rapid alkalinization factor(RALF)family in rice.We found that the rice genome carries numerous lineage-specific OsRALFs,suggesting that this evolutionary expansion could be the result of an arms race with pathogens.Among them,we focused on the Oryza-specific Os RALF26 and its closest homolog,OsRALF27,analyzing their effects across a range of plant species from monocots to dicots.The exogenous application of OsRALF26 significantly reduced bacterial populations in rice challenged with Xanthomonas oryzae pv.oryzae(Xoo)and in Arabidopsis and tomato challenged with Pseudomonas syringae pv.tomato DC3000(Pst DC3000),whereas Os RALF27 did not enhance resistance.
基金support from the National Natural Science Foundation of China(32320103010 and 32172385 to F.L.)the Agricultural Science and Technology Innovation Program(CAAS-BRC-CB-2025-02 to F.L.).
文摘RNA interference(RNAi,also known as RNA silencing)is one of the most important plant defense re-sponses against viral invasion.Although major components of the RNAi pathway,steps leading to viral small interfering RNA biogenesis,and viral counterdefense strategies via RNAi suppressors have been well studied,the broader roles of RNAi in viral infection and seed transmission remain less thoroughly char-acterized.In particular,the increasing complexity of RNAi-associated mechanisms and their integration with other biological processes have not been comprehensively summarized.Increasing numbers of studies have identified non-canonical RNAi pathways,novel host factors involved in RNAi,and the possi-bility of small RNAs acting across kingdoms to modulate plant-virus-vector tritrophic interactions.In this review,we provide an overview of the roles of RNAi in plant viral infections and describe recent advances,with emphasis on the discoveries of novel positive and negative RNAi regulators,potential signaling path-ways upstream and downstream of antiviral RNAi,and the prospects and challenges of double-stranded RNA applications,either expressed from transgenes or supplied exogenously via spraying.We also discuss how these findings reshape current views on antiviral RNAi,highlight remaining knowledge gaps,and examine how these advances influence plant-virus co-evolution while informing strategies for managing plant virus diseases and reducing their impact.
