Arbscular mycorrhiza(AM),a symbiosis between plants and members of fungi Glomeromycota,improves the resistance,nutrition and material metabolism of plant.Arbuscules generated by symbiotic development,is the main site ...Arbscular mycorrhiza(AM),a symbiosis between plants and members of fungi Glomeromycota,improves the resistance,nutrition and material metabolism of plant.Arbuscules generated by symbiotic development,is the main site of nutrient exchange and genetic material recombination,resulting in physiological changes and gene expression regulation.AM regulates pathogenesis-related protein(PRs) genes and antioxidant enzyme genes against biotic and abiotic stresses.Nutrient exchange induced by AM is directly involved in uptake,transformation and utilization of nutrient elements in plants.Importantly,transporter genes play an important role in phosphate,nitrogen and carbon acquisition.In AM interactions,phosphate transporter(PT) genes,from both arbuscular mycorrhizal fungi and plant root,are induced and there product promote phosphate acquisition;increasing expression of ammonium transporter(AMT) genes and arginine biosynthesis/degradation enzyme genes is in charge of nitrogen acquisition;and promotion mechanism of carbon acquisition is involved in up-regulation of sugar transporter genes.In addition,secondary metabolites,functioned as signal moleculars and defense compounds,are increased with development of AM symbiont by up-regulating related synthetic genes based on different promotion mechanism.Taken together,molecular regulation of plant and arbuscular mycorrhizal fungi,induced by infection process,stimulate plant nutrient acquisition and resist to biotic/abiotic stress.展开更多
This paper reported the effect of oolong tea processing procedure of turn-over on quality of the Jinmudan Oolong tea,including taste components and volatile compounds.The content of the water extractable solids was gr...This paper reported the effect of oolong tea processing procedure of turn-over on quality of the Jinmudan Oolong tea,including taste components and volatile compounds.The content of the water extractable solids was gradually increased,but the content of amino acid decreased and then increased,and the content of the soluble sugar and tea polyphenols increased after the first turn-over processing.The major volatiles of the three tested Jinmudan Oolong tea samples were nerolidolcistrans,α-farnesene,palmitic acid,indole and 9,12,15-octadecatrienoicacid and methyl ester.The sensory evaluation results showed that an appropriate increase in the number of turn-over was helpful to quality of the Jinmudan Oolong tea.展开更多
基金financed by the Doctoral Foundation of Ministry of Education of China(20110101110094)
文摘Arbscular mycorrhiza(AM),a symbiosis between plants and members of fungi Glomeromycota,improves the resistance,nutrition and material metabolism of plant.Arbuscules generated by symbiotic development,is the main site of nutrient exchange and genetic material recombination,resulting in physiological changes and gene expression regulation.AM regulates pathogenesis-related protein(PRs) genes and antioxidant enzyme genes against biotic and abiotic stresses.Nutrient exchange induced by AM is directly involved in uptake,transformation and utilization of nutrient elements in plants.Importantly,transporter genes play an important role in phosphate,nitrogen and carbon acquisition.In AM interactions,phosphate transporter(PT) genes,from both arbuscular mycorrhizal fungi and plant root,are induced and there product promote phosphate acquisition;increasing expression of ammonium transporter(AMT) genes and arginine biosynthesis/degradation enzyme genes is in charge of nitrogen acquisition;and promotion mechanism of carbon acquisition is involved in up-regulation of sugar transporter genes.In addition,secondary metabolites,functioned as signal moleculars and defense compounds,are increased with development of AM symbiont by up-regulating related synthetic genes based on different promotion mechanism.Taken together,molecular regulation of plant and arbuscular mycorrhizal fungi,induced by infection process,stimulate plant nutrient acquisition and resist to biotic/abiotic stress.
基金supported in part by the rural science and technology innovation fund project of technology division from Ningbo city science and technology bureau (No.201001C8002011201002C1011003) for financial support
文摘This paper reported the effect of oolong tea processing procedure of turn-over on quality of the Jinmudan Oolong tea,including taste components and volatile compounds.The content of the water extractable solids was gradually increased,but the content of amino acid decreased and then increased,and the content of the soluble sugar and tea polyphenols increased after the first turn-over processing.The major volatiles of the three tested Jinmudan Oolong tea samples were nerolidolcistrans,α-farnesene,palmitic acid,indole and 9,12,15-octadecatrienoicacid and methyl ester.The sensory evaluation results showed that an appropriate increase in the number of turn-over was helpful to quality of the Jinmudan Oolong tea.
