Topic
Amorpha
About: Amorpha is a research topic. Over the lifetime, 67 publications have been published within this topic receiving 889 citations.
Papers published on a yearly basis
Papers
TL;DR: It was found that the organic matter content was relatively low in the restored soils, compared with not-restored land, and this may be caused by the high enzyme activity per unit of organic carbon in the soils of the study area which tends to help decompose and therefore decrease theorganic matter in soil.
Abstract: article i nfo This study examined the changes in soil properties and soil quality 30 years after cultivated farmland was re- stored back to forest land in Loess Plateau, China. Specifically, organic matter, total nitrogen (N) and phos- phorus (P), available N, P and Potassium (K) contents in soils were tested and analyzed. In addition, enzyme activities of α-amylase, saccharase, polyphenol oxidase, cellulase, urease, catalase and alkaline phos- phatase were also investigated. The study area has mostly been restored, in the past 30 years, back to grass- land in some parts, and the other parts of forest lands of black locust, korshinsk peashrub, Chinese pine, mixed trees of Chinese pine and amorpha, and mixed trees of black locust and amorpha. Soil properties on a sloped farmland, located in the study area but has not had a chance to be restored, were tested and the re- sult was treated as the soil properties of non-restoration. Soil properties of an 80-year old forest land of Chi- nese arborvitae were tested and the result was treated as that of a climax community. The study showed that after 30 years of restoration, nutrients content in the soil of mixed forest of black locust and amorpha in- creased significantly. However, nutrients content in the soil of mixed forest of Chinese pine and amorpha de- creased. As to soil enzyme activities, saccharase, cellulase, urease, catalase and alkaline phosphatase increased while polyphenol oxidase activity decreased compared to non-restoration and climax community soils. The study also found that the organic matter content was relatively low in the restored soils, compared with not-restored land. This may be caused by the high enzyme activity per unit of organic carbon in the soils of the study area which tends to help decompose and therefore decrease the organic matter in soil.
200 citations
TL;DR: Intra- and interspecific variation of thirty-two isolates assignable to the genus Beauveria was evaluated using 64 morphological and biochemical characters, finding spore form was the most useful criterion to distinguish between species.
122 citations
TL;DR: It can be concluded from the results of this research that biological recultivation should take into account the existing ecological, vegetation, and floristic potential of an immediate environment that is abundant in life forms and ecological types of plant species that can overgrow the ash deposit relatively quickly.
Abstract: This ecophysiological research on the ash deposits from the “Nikola Tesla–A” thermal power station in Serbia covered 10 plant species (Tamarix gallica, Populus alba, Spiraea van-hauttei, Ambrosia artemisifolia, Amorpha fruticosa, Eupatorium cannabinum, Crepis setosa, Epilobium collinum, Verbascum phlomoides, and Cirsium arvense). This paper presents the results of a water regime analysis, photosynthetic efficiency and trace elements (B, Cu, Mn, Zn, Pb, and Cd) content in vegetative plant parts. Water regime parameters indicate an overall stability in plant-water relations. During the period of summer drought, photosynthetic efficiency (Fv/Fm) was low, ranging from 0.429 to 0.620 for all the species that were analyzed. An analysis of the tissue trace elements content showed a lower trace metal concentration in the plants than in the ash, indicating that heavy metals undergo major concentration during the combustion process and some are not readily taken up by plants. The Zn and Pb concentrations in all of the examined species were normal whereas Cu and Mn concentrations were in the deficiency range. Boron concentrations in plant tissues were high, with some species even showing levels of more than 100 μg/g (Populus sp., Ambrosia sp., Amorpha sp., and Cirsium sp.). The presence of Cd was not detected. In general, it can be concluded from the results of this research that biological recultivation should take into account the existing ecological, vegetation, and floristic potential of an immediate environment that is abundant in life forms and ecological types of plant species that can overgrow the ash deposit relatively quickly. Selected species should be adapted to toxic B concentrations with moderate demands in terms of mineral elements (Cu and Mn).
80 citations
TL;DR: SEM analysis of B. amorpha and B. bassiana infecting B. microplus showed apressorium formation during penetration on cattle tick cuticle, and chitin and tick cuticles-induced chit inase in both fungus and protease was induced only bytick cuticle.
Abstract: Beauveria bassiana is a well-known broad-range arthropod pathogen which has been used in biological control of several pest insects and ticks such as Boophilus microplus. Beauveria amorpha has both endophytic and entomopathogenic characteristics, but its capacity for biological control has still not been studied. During the processes of host infection, B. bassiana and B. amorpha produce several hydrolytic extracellular enzymes, including proteases and chitinases, which probably degrade the host cuticle and are suggested to be pathogenicity determinants. To access the role of these enzymes during infection in the tick B. microplus, we analyzed their secretion during fungus growth in single and combined carbon sources, compared to complex substrates such as chitin and B. microplus cuticle. Chitin and tick cuticle-induced chitinase in both fungus and protease was induced only by tick cuticle. SEM analysis of B. amorpha and B. bassiana infecting B. microplus showed apressorium formation during penetration on cattle tick cuticle.
73 citations
TL;DR: Investigations suggested that these rotenoids might be valuable anti-tumor-promoter agents, isolated from the leaves of A. fruticosa, exhibited remarkable inhibitory effects of EBV-EA activation induced by TPA.
Abstract: As a part of screening studies for chemopreventive agents (anti-tumor-promoters), six North American plants belonging to the Amorpha genus were tested using an in vitro assay system. Of these plants, Amorpha fruticosa exhibited strong inhibitory effects on Epstein-Barr virus early antigen (EBA-EA) activation induced by the tumor promoter 12-O-tetradecanoylphorbol-13-acetate (TPA). Also six rotenoids, amorphispironone [1], tephrosin [2], amorphigenin [3], 12a-hydroxyamorphigenin [4], 12a-hydroxydalpanol [5], and 6'-O-D-glucopyranosyldalpanol [6], were isolated from the leaves of A. fruticosa. Among these retenoids, 1 and 2 exhibited remarkable inhibitory effects of EBV-EA activation induced by TPA. Further, 1 and 2 exhibited significant anti-tumor-promotion effects on mouse skin tumor promotion in an in vivo two-stage carcinogenesis test. These investigations suggested that these rotenoids might be valuable anti-tumor-promoters.
72 citations
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Performance Metrics
| Year | Papers |
|---|---|
| 2020 | 2 |
| 2016 | 1 |
| 2015 | 2 |
| 2014 | 4 |
| 2013 | 3 |
| 2012 | 5 |