The content of chemical compounds of two leguminous plants (Alysicarpus ovalifolius and Indigofera pilosa) was given through chromatographic methods (HPLC) and spectrocolorimetry. The principal isolated compounds are:...The content of chemical compounds of two leguminous plants (Alysicarpus ovalifolius and Indigofera pilosa) was given through chromatographic methods (HPLC) and spectrocolorimetry. The principal isolated compounds are: β-Carotene in the sheets, the vitamin B in the roots and the vitamin C in the pods. Trace elements are not also insulated in the two plant species. The results show a content iodine (0.27 mg/100g of sample) particularly high in the stems of Indigofera pilosa, what could explain the use of the plant to fight against the thyroid dysfunctions. The ratio iron in mg/100g of sample 114.14 is rather important and would make Indigofera pilosa a palliative against anaemia. The two plants would be indicated in cases of treatment of hypocalcaemia.展开更多
Plant roots and their associated mycorrhizal fungi critically mediate the decomposition of soil organic carbon(C),but the general patterns of their impacts over a broad geographical range and the primary mediating fac...Plant roots and their associated mycorrhizal fungi critically mediate the decomposition of soil organic carbon(C),but the general patterns of their impacts over a broad geographical range and the primary mediating factors remain unclear.Based on a synthesis of 596 paired observations from both field and greenhouse experiments,we found that living roots and/or mycorrhizal fungi increased organic C decomposition by 30.9%,but low soil nitrogen(N)availability(i.e.,high soil C:N ratio)critically mitigated this promotion effect.In addition,the positive effects of living roots and/or mycorrhizal fungi on organic C decomposition were higher under herbaceous and leguminous plants than under woody and non-leguminous plants,respectively.Surprisingly,there was no significant difference between arbuscular mycorrhizal fungi and ectomycorrhizal fungi in their effects on organic C decomposition.Furthermore,roots and/or mycorrhizal fungi significantly enhanced the decomposition of leaf litter but not root litter.These findings advance our understanding of how roots and their symbiotic fungi modulate soil C dynamics in the rhizosphere or mycorrhizosphere and may help improve predictions of soil global C balance under a changing climate.展开更多
文摘The content of chemical compounds of two leguminous plants (Alysicarpus ovalifolius and Indigofera pilosa) was given through chromatographic methods (HPLC) and spectrocolorimetry. The principal isolated compounds are: β-Carotene in the sheets, the vitamin B in the roots and the vitamin C in the pods. Trace elements are not also insulated in the two plant species. The results show a content iodine (0.27 mg/100g of sample) particularly high in the stems of Indigofera pilosa, what could explain the use of the plant to fight against the thyroid dysfunctions. The ratio iron in mg/100g of sample 114.14 is rather important and would make Indigofera pilosa a palliative against anaemia. The two plants would be indicated in cases of treatment of hypocalcaemia.
基金supported by China Postdoctoral Science Foundation(No.2023M741742)the National Key R&D Program of China(No.2023YFD1501600)+1 种基金Jiangsu Funding Program for Excellent Postdoctoral Talent,China(No.2023ZB122)the National Natural Science Foundation of China(No.32371626)。
文摘Plant roots and their associated mycorrhizal fungi critically mediate the decomposition of soil organic carbon(C),but the general patterns of their impacts over a broad geographical range and the primary mediating factors remain unclear.Based on a synthesis of 596 paired observations from both field and greenhouse experiments,we found that living roots and/or mycorrhizal fungi increased organic C decomposition by 30.9%,but low soil nitrogen(N)availability(i.e.,high soil C:N ratio)critically mitigated this promotion effect.In addition,the positive effects of living roots and/or mycorrhizal fungi on organic C decomposition were higher under herbaceous and leguminous plants than under woody and non-leguminous plants,respectively.Surprisingly,there was no significant difference between arbuscular mycorrhizal fungi and ectomycorrhizal fungi in their effects on organic C decomposition.Furthermore,roots and/or mycorrhizal fungi significantly enhanced the decomposition of leaf litter but not root litter.These findings advance our understanding of how roots and their symbiotic fungi modulate soil C dynamics in the rhizosphere or mycorrhizosphere and may help improve predictions of soil global C balance under a changing climate.
