Fusarium crown rot(FCR) is a soilborne disease causing severe yield losses in many wheat-growing areas of the world. Diseased plants show browning and necrosis of roots and stems causing white heads at maturity. Littl...Fusarium crown rot(FCR) is a soilborne disease causing severe yield losses in many wheat-growing areas of the world. Diseased plants show browning and necrosis of roots and stems causing white heads at maturity. Little is known about the molecular processes employed by wheat roots to respond to the disease. We characterized morphological, transcriptional and hormonal changes in wheat seedling roots following challenge with Fusarium pseudograminearum(Fp), the main pathogen of FCR. The pathogen inhibited root development to various extents depending on plants' resistance level. Many genes responsive to FCR infection in wheat roots were enriched in plant hormone pathways. The contents of compounds involved in biosynthesis and metabolism of jasmonic acid, salicylic acid, cytokinin and auxin were drastically changed in roots at five days post-inoculation. Presoaking seeds in methyl jasmonate for 24 h promoted FCR resistance, whereas presoaking with cytokinin 6-benzylaminopurine made plants more susceptible. Overexpression of TaOPR3, a gene involved in jasmonic acid biosynthesis, enhanced plant resistance as well as root and shoot growth during infection.展开更多
To investigate the feasibility of intramuscular electro-acupuncture-mediated VEGF gene transfer on experimental limb ischemia, the transcription and expression of VEGF gene have been detected with RT-PCR and immunohis...To investigate the feasibility of intramuscular electro-acupuncture-mediated VEGF gene transfer on experimental limb ischemia, the transcription and expression of VEGF gene have been detected with RT-PCR and immunohistochemistry staining, and the biological effect of VEGF gene inside the nat limb has been observed through vascular angiography. Results from angiography show that the transfer of VEGF gene into the rat with experimental limb ischemia can stimulate the formation of neovessel, establish collateral circulation, augment blood perfusion, and ameliorate distal limb necrosis. These findings reveal that intramuscular electro acupuncture-mediated VEGF gene transfer may present a new therapeutic modality for treating tissue ischemia.展开更多
基金supported by the State Key Laboratory of North China Crop Improvement and RegulationNational Key Research and Development Program of China (2018YFD0300501)National Natural Science Foundation of China (31872865)。
文摘Fusarium crown rot(FCR) is a soilborne disease causing severe yield losses in many wheat-growing areas of the world. Diseased plants show browning and necrosis of roots and stems causing white heads at maturity. Little is known about the molecular processes employed by wheat roots to respond to the disease. We characterized morphological, transcriptional and hormonal changes in wheat seedling roots following challenge with Fusarium pseudograminearum(Fp), the main pathogen of FCR. The pathogen inhibited root development to various extents depending on plants' resistance level. Many genes responsive to FCR infection in wheat roots were enriched in plant hormone pathways. The contents of compounds involved in biosynthesis and metabolism of jasmonic acid, salicylic acid, cytokinin and auxin were drastically changed in roots at five days post-inoculation. Presoaking seeds in methyl jasmonate for 24 h promoted FCR resistance, whereas presoaking with cytokinin 6-benzylaminopurine made plants more susceptible. Overexpression of TaOPR3, a gene involved in jasmonic acid biosynthesis, enhanced plant resistance as well as root and shoot growth during infection.
文摘To investigate the feasibility of intramuscular electro-acupuncture-mediated VEGF gene transfer on experimental limb ischemia, the transcription and expression of VEGF gene have been detected with RT-PCR and immunohistochemistry staining, and the biological effect of VEGF gene inside the nat limb has been observed through vascular angiography. Results from angiography show that the transfer of VEGF gene into the rat with experimental limb ischemia can stimulate the formation of neovessel, establish collateral circulation, augment blood perfusion, and ameliorate distal limb necrosis. These findings reveal that intramuscular electro acupuncture-mediated VEGF gene transfer may present a new therapeutic modality for treating tissue ischemia.
