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1.
The growth response ofCalopogonium caeruleum, a leguminous covercrop in plantation agriculture, to inoculation with two vesicular-arbuscular mycorrhizal (VAM) fungi was
investigated in five phosphorus (P)-deficient soils supplied with various levels of rock phosphate. Significant shoot yield
increases over the uninoculated controls were obtained in most sterilised or unsterilised soils at all applied P levels, although
the inoculant VAM fungi differed in their effectiveness in the soils used. Responses in mycorrhizal root infections, P and
nitrogen (N) concentrations in tops and plant nodulation varied. The results are discussed in relation to the edaphic environment
of the mycorrhizal association. 相似文献
2.
Ersilia Cassano Marco Macchia Mahmud Hamdan Paolo Rovero 《Letters in Peptide Science》1996,3(3):117-120
Summary We describe a new solid-phase strategy for the selective reduction of the C=N bond in peptide oximes using a trialkylsilane in trifluoroacetic acid. The reduction is performed directly on the resin-bound peptide, with concomitant cleavage of the peptide from the resin and deblocking of protected side chains. 相似文献
3.
Romano Ngui Noor Amira Abdul Halim Yamuna Rajoo Yvonne AL Lim Stephen Ambu Komalaveni Rajoo Tey Siew Chang Lu Chan Woon Rohela Mahmud 《The Korean journal of parasitology》2016,54(5):673-678
Epidemiological study on strongyloidiasis in humans is currently lacking in Malaysia. Thus, a cross-sectional study was carried out to determine the prevalence of Strongyloides stercoralis infection among the inhabitants of longhouse indigenous communities in Sarawak. A single stool and blood sample were collected from each participant and subjected to microscopy, serological and molecular techniques. Five species of intestinal parasites were identified by stool microscopy. None of the stool samples were positive for S. stercoralis. However, 11% of 236 serum samples were seropositive for strongyloidiasis. Further confirmation using molecular technique on stool samples of the seropositive individuals successfully amplified 5 samples, suggesting current active infections. The prevalence was significantly higher in adult males and tended to increase with age. S. stercoralis should no longer be neglected in any intestinal parasitic survey. Combination of more than 1 diagnostic technique is necessary to increase the likelihood of estimating the ‘true’ prevalence of S. stercoralis. 相似文献
4.
Jalal Rouhi Mohamad Hafiz Mamat C. H. Raymond Ooi Shahrom Mahmud Mohamad Rusop Mahmood 《PloS one》2015,10(4)
High-density and well-aligned ZnO–ZnS core–shell nanocone arrays were synthesized on fluorine-doped tin oxide glass substrate using a facile and cost-effective two-step approach. In this synthetic process, the ZnO nanocones act as the template and provide Zn2+ ions for the ZnS shell formation. The photoluminescence spectrum indicates remarkably enhanced luminescence intensity and a small redshift in the UV region, which can be associated with the strain caused by the lattice mismatch between ZnO and ZnS. The obtained diffuse reflectance spectra show that the nanocone-based heterostructure reduces the light reflection in a broad spectral range and is much more effective than the bare ZnO nanocone and nanorod structures. Dye-sensitized solar cells based on the heterostructure ZnO–ZnS nanocones are assembled, and high conversion efficiency (η) of approximately 4.07% is obtained. The η improvement can be attributed primarily to the morphology effect of ZnO nanocones on light-trapping and effectively passivating the interface surface recombination sites of ZnO nanocones by coating with a ZnS shell layer. 相似文献
5.
Currently, a wide variety of both polyclonal and monoclonal antibodies are being routinely utilized to prevent and treat solid organ rejection. More commonly, these agents are also administered in order to delay introduction of calcineurin inhibitors, especially in patients with already compromised renal function. While these antibody therapies dramatically reduced the incidence of acute rejection episodes and improved both short and long-term graft survival, they are also associated with an increased incidence of opportunistic infections and neoplastic complications. Therefore, effective patient management must necessarily balance these risks against the potential benefits of the therapy.Key words: monoclonal, polyclonal, induction, transplants, kidney, lung, liver, heart, rejection, complications 相似文献
6.
Chen H Yin Y Li Y Mahmud MS Wang Z 《Comparative biochemistry and physiology. Part B, Biochemistry & molecular biology》2012,163(2):203-210
Nomuraea rileyi is an important pathogenic fungus that can successfully control Spodoptera litura. However, little is known on how S. litura responds to N. rileyi infection. A forward suppression subtractive hybridization (SSH) cDNA library was constructed from the S. litura fat body and the up-regulated genes were identified to isolate differentially expressed genes in response to N. rileyi. A total of 345/1175 random clones screened by cDNA array dot blotting were sequenced, resulting in 117 uniquely expressed sequence tags (ESTs). Potential functional genes were identified by BLAST searches and were categorized into seven groups associated with different biological processes based on the literature and gene ontologies. Among 117 genes, 74 had matches in the non-redundant (NR) protein database and were found to be involved in different biological processes, while 43 of the screened genes were classified to the "unknown function" gene group. Notably, only two genes had previously been reported in S. litura and most of the screened genes showed less similarity to known sequences based on BLASTn results, suggesting that 115 genes were found for the first time in S. litura. Semi-quantitative RT-PCR analysis of seven randomly selected genes revealed that most were differentially expressed after N. rileyi infection. qRT-PCR analysis confirmed that four genes (Hsp70, Hsp90, gallerimycin, and cysteine proteinase) were significantly up-regulated after N. rileyi infection. Taken together, the present study identified up-regulated S. litura genes in response to N. rileyi infection. Further investigations are needed to unravel the molecular mechanisms of the genes or proteins potentially involved in the S. litura innate immune defense against N. rileyi infection. 相似文献
7.
A low diversity Lower Ordovician trilobite assemblage is described from the middle part of the Lashkarak Formation at Simeh-Kuh, northwest of Damghan, northern Iran. Co-occurrence with conodonts of the lowermost Paroistodusproteus Biozone suggests an uppermost Tremadocian age. This assemblage includes four taxa, including one new genus and two new species, Damghanampyxginteri nov. gen. nov. sp. and Asaphellusfecundus nov. sp. The third diagnosable species from the formation is Taihungshaniamiqueli (Bergeron, 1894) which has previously been reported from southern France and the Turkish Taurides, suggesting north Gondwanan faunal affinities. 相似文献
8.
Habibul Bari Shozib Md. Mariful Islam Sultan Abu Saleh Mahmud Md. Nazmul Bari Nasima Akter Saima Jahan Shakir Hosen Mohammad Nazir Hossain A.H.M. Nurun Nabi Muhammad Ali Siddiquee Md. Manjurul Haque 《Saudi Journal of Biological Sciences》2021,28(12):7472-7480
BackgroundBlack pericarp rice has recently become popular among rice consumers for its diverse health benefits specially anti-cancer effect. Cyanidin-3-Glucosides (C3G), an prominant bioactive component of anthocyanins which is abundantly present in black pericarp rice.ObjectivesWe investigated, how effectively it can be used to fortify Cyanidin-3-Glucosides (C3G) content in red and white pericarp polished rice or rice based bakery products for more nutritional value.MethodIn the present study, we have characterized several black pericarp rice cultivars along with some red pericarp and white pericarp rice cultivars by physicochemical including mineral profiling, and quantified the C3G by UFLC and LCMS.ResultsC3G content was significantly reduced from raw rice to cooked rice condition. All the black pericarp rice cultivars synthesized C3G, while this content was not detected in red and white pericarp rice cultivars. However, when 25% of black pericarp rice were mixed with 75% red or white pericarp polished rice, C3G content was significantly retained in cooked rice conditions. Formulation of rice-based bakery food product using black pericarp rice powder was also remarkably retained the C3G content as compared to that of cooking. Black rice is harder in texture, difficult to digest and needs higher energy for cooking. Therefore, we tried to circumvent these challenges by fortifying 25% of black pericarp rice with white or red pericarp rice.ConclusionFortification of C3G enriched black rice (25%) with red or white pericarp rice (75%) might bring a better nutritional quality in both cooking and baking condition. This may lead a way to the effective management of the non-communicable disease such as cancer for common rice consuming population. 相似文献
9.
Variation of toxigenic Vibrio cholerae O1 in the aquatic environment of Bangladesh and its correlation with the clinical strains 总被引:3,自引:0,他引:3
Islam MS Talukder KA Khan NH Mahmud ZH Rahman MZ Nair GB Siddique AK Yunus M Sack DA Sack RB Huq A Colwell RR 《Microbiology and immunology》2004,48(10):773-777
The diversity of toxigenic V. cholerae O1 in the aquatic environment of Bangladesh is not known. A total of 18 environmental and 18 clinical strains of toxigenic V. cholerae O1 were isolated simultaneously from four different geographical areas and tested for variation by the pulsed-field gel electrophoresis method. Environmental strains showed diversified profiles and one of the profiles was common to some environmental strains and most clinical strains. It appears that one clone has an advantage over others to cause disease. These findings suggest that the study of the molecular ecology of V. cholerae O1 in relation to its environmental reservoir is important in identifying virulent strains that cause disease. 相似文献
10.