Poor soil is one of the agricultural world’s principal challenges, inciting the use of chemical fertilizer’s to improve overall soil quality. However, the use of chemical fertilizer has significant and cascading env...Poor soil is one of the agricultural world’s principal challenges, inciting the use of chemical fertilizer’s to improve overall soil quality. However, the use of chemical fertilizer has significant and cascading environmental consequences. Therefore, the use of beneficial microbes’ inoculation in treating poor soil is a considerably ecofriendly sustainable solution. In the current study, we supplemented nutrient-deprived soil with plant growth promoting bacteria (PGPB), Pseudomonas fluorescens. The bacterial inoculations of Pseudomonas fluorescenswere added to the poor soil following two days post-sowing of Zea mays var. amylacea and Pennisetumamericanum p. seedlings. Metabolite analyses were conducted two months after treatment for both shoots and roots using nuclear magnetic resonance method (NMR). The data indicated significant changes in 19 metabolites relative to control in both plants shoot and roots. Among these metabolites, 7 were upregulated in roots of Zea mays var. amylacea, and 9 metabolites were upregulated in roots of Pennisetum americanum p. The PGPB enhanced sugars (fructose, glucose, sucrose) and amino acids (glutamate, alanine and succinate) in roots, while down regulating in shoots of Pennisetum americanum p. The Pseudomonas fluorescens induced, predominantly,Aminoacyl-tRNA related metabolite, and Alanine, aspartate and glutamate metabolite biosynthesis in Zea mays var. amylacea), whereas PGPB induced metabolites in Pennisetum americanum p., dominated by up regulated carbohydrate related (starch and sucrose) metabolites. The difference in some metabolic response between the two plants indicated that PGPB influence has a species-specific manner.展开更多
The plant height,tiller number,yield of three warm-season forage varieties in Southern China were studied for consecutive two years.The result showed that the three varieties all adapted to the environmental condition...The plant height,tiller number,yield of three warm-season forage varieties in Southern China were studied for consecutive two years.The result showed that the three varieties all adapted to the environmental conditions.The annual fresh grass yield of Pennisetum purpureum Schum ev.Taiwan,Guimu-1 hybrid P.purpureum and P.sinese Roxb were 220.85,163.18,186.20 t/hm^2;the crude protein content were 17.39%,19.02%and 20.91%;the crude fat content were 6.37%,5.37%and 4.69%;and the crude fiber content were 33.49%,32.22%and 33.58%,respectively.P.purpureum Schum ev.Taiwan had stronger cold resistance,fast growth after overwintering and strong resistance,and no plant diseases and insect pests were found during the test.P.purpureum Schum ev.Taiwan is a high yield and high quality forage variety,which is worth popularizing and applying.展开更多
文摘Poor soil is one of the agricultural world’s principal challenges, inciting the use of chemical fertilizer’s to improve overall soil quality. However, the use of chemical fertilizer has significant and cascading environmental consequences. Therefore, the use of beneficial microbes’ inoculation in treating poor soil is a considerably ecofriendly sustainable solution. In the current study, we supplemented nutrient-deprived soil with plant growth promoting bacteria (PGPB), Pseudomonas fluorescens. The bacterial inoculations of Pseudomonas fluorescenswere added to the poor soil following two days post-sowing of Zea mays var. amylacea and Pennisetumamericanum p. seedlings. Metabolite analyses were conducted two months after treatment for both shoots and roots using nuclear magnetic resonance method (NMR). The data indicated significant changes in 19 metabolites relative to control in both plants shoot and roots. Among these metabolites, 7 were upregulated in roots of Zea mays var. amylacea, and 9 metabolites were upregulated in roots of Pennisetum americanum p. The PGPB enhanced sugars (fructose, glucose, sucrose) and amino acids (glutamate, alanine and succinate) in roots, while down regulating in shoots of Pennisetum americanum p. The Pseudomonas fluorescens induced, predominantly,Aminoacyl-tRNA related metabolite, and Alanine, aspartate and glutamate metabolite biosynthesis in Zea mays var. amylacea), whereas PGPB induced metabolites in Pennisetum americanum p., dominated by up regulated carbohydrate related (starch and sucrose) metabolites. The difference in some metabolic response between the two plants indicated that PGPB influence has a species-specific manner.
基金Supported by Introduction,Cultivation,Demonstration and Promotion Fund Project of High-quality Forage Grass(2010CY012)
文摘The plant height,tiller number,yield of three warm-season forage varieties in Southern China were studied for consecutive two years.The result showed that the three varieties all adapted to the environmental conditions.The annual fresh grass yield of Pennisetum purpureum Schum ev.Taiwan,Guimu-1 hybrid P.purpureum and P.sinese Roxb were 220.85,163.18,186.20 t/hm^2;the crude protein content were 17.39%,19.02%and 20.91%;the crude fat content were 6.37%,5.37%and 4.69%;and the crude fiber content were 33.49%,32.22%and 33.58%,respectively.P.purpureum Schum ev.Taiwan had stronger cold resistance,fast growth after overwintering and strong resistance,and no plant diseases and insect pests were found during the test.P.purpureum Schum ev.Taiwan is a high yield and high quality forage variety,which is worth popularizing and applying.
