Hybridization of downregulated-COMT transgenic switchgrass lines with field-selected switchgrass for improved biomass traits     

Holly L. Baxter  Lisa W. Alexander  Mitra Mazarei  Ellen Haynes  Geoffrey B. Turner  Robert W. Sykes  Stephen R. Decker  Mark F. Davis  Richard A. Dixon  Zeng-Yu Wang  C. Neal Stewart 《Euphytica》2016,209(2):341-355

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Two mutations in the truncated Rep gene RBR domain delayed the Wheat dwarf virus infection in transgenic barley plants     

Pavel Cejnar  Ludmila Ohnoutková  Jan Ripl  Tomáš Vlčko  Jiban Kumar Kundu 《农业科学学报》2018,17(11):2492-2500

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Ibuprofen Sorption to Coastal Plain Soils     

Siddhartha Mitra  Beau Benfield 《Water, air, and soil pollution》2018,229(9):295

Ibuprofen is commonly detected in onsite wastewater systems. Such onsite systems are abundant in coastal plain areas, globally. Coastal plain soils have unique mineralogy. Rapid subsurface transport may occur in coastal plain soils due to their characteristic permeable soils and seasonally high water tables. Laboratory batch sorption studies were conducted on Norfolk, Goldsboro, and Lynchburg, three archetypical coastal plain soils, with varying physicochemical properties, to evaluate ibuprofen sorption. Sorption distribution coefficients (K_D values) across all three soils ranged from 0.63 to 1.26 L kg^?1. Sorption of ibuprofen to Norfolk and Goldsboro soils was able to be modeled using a Freundlich isotherm; however, the Lynchburg soil, was not, likely due to soil heterogeneity. In general, sorption of ibuprofen was influenced by soil organic carbon content.  相似文献   

Reinforcement of cell wall in roots of Lycopersicon esculentum through induction of phenolic compounds and lignin by elicitors     

Sudhamoy Mandal  Adinpunya Mitra 《Physiological and Molecular Plant Pathology》2007,71(4-6):201-209

Changes in phenolic metabolism and lignin deposition have been studied in roots of tomato plants after elicitation with four elicitors which are Fusarium mycelium extract (FME), chitosan (CHT), Fusarium culture filtrate (FCF) and Trichoderma mycelium extract (TME). Most profound effect of elicitors was observed on ferulic acid among the phenolic compounds. After 24 h elicitation, the increase in ferulic acid content of root cell wall was 3.71 and 3.30 times by FME and CHT, respectively. The increase of 4-hydroxybenzoic acid was 2.71 and 2.16 times by these two elicitors. The level of 4-coumaric acid was little more than double by these two elicitors after 24 h elicitation. Most pronounced increase in lignin synthesis was also effected by FME followed by CHT. Lignin deposition in the root cell wall was increased 3.6, 5.4 and 7.1 times by FME during 12, 24 and 36 h after elicitation, respectively. Similarly, CHT increased lignin deposition by 2.8, 5.1 and 6.8 times at 12, 24 and 36 h after elicitation, respectively. FCF and TME also increased lignin deposition significantly in the cell walls of tomato roots during the above time periods of elicitation. Activity of phenylalanine ammonia lyase reached highest level at 24 h post elicitation under the influence of the elicitors. Peroxidase activity registered a sharp increase at 24 h post elicitation. Markedly increased level of polyphenol oxidase activity was found at 12 h post elicitation. Cinnamyl alcohol dehydrogenase activity was observed to reach highest level at 48 h post elicitation. Cell wall strengthening, through the deposition of lignin, preceded by the induction of the synthesizing enzymes appears to play an important role in the defense response of Lycopersicon esculentum in reaction to elicitors, including one derived from Fusarium oxysporum f. sp. lycopersici, the causal organism of Fusarium wilt of tomato.  相似文献   

Accurate multiplex polony sequencing of an evolved bacterial genome   总被引：1，自引：0，他引：1  

Shendure J  Porreca GJ  Reppas NB  Lin X  McCutcheon JP  Rosenbaum AM  Wang MD  Zhang K  Mitra RD  Church GM 《Science (New York, N.Y.)》2005,309(5741):1728-1732

We describe a DNA sequencing technology in which a commonly available, inexpensive epifluorescence microscope is converted to rapid nonelectrophoretic DNA sequencing automation. We apply this technology to resequence an evolved strain of Escherichia coli at less than one error per million consensus bases. A cell-free, mate-paired library provided single DNA molecules that were amplified in parallel to 1-micrometer beads by emulsion polymerase chain reaction. Millions of beads were immobilized in a polyacrylamide gel and subjected to automated cycles of sequencing by ligation and four-color imaging. Cost per base was roughly one-ninth as much as that of conventional sequencing. Our protocols were implemented with off-the-shelf instrumentation and reagents.  相似文献   

Association of microsatellite (GT)n polymorphism at 3'UTR of NRAMP1 with the macrophage function following challenge with Brucella LPS in buffalo (Bubalus bubalis)   总被引：1，自引：0，他引：1  

Ganguly I  Sharma A  Singh R  Deb SM  Singh DK  Mitra A 《Veterinary microbiology》2008,129(1-2):188-196

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Implementation of the One Health approach to fight arbovirus infections in the Mediterranean and Black Sea Region: Assessing integrated surveillance in Serbia,Tunisia and Georgia     

Maria Grazia Dente  Flavia Riccardo  Francesco Bolici  Nello Augusto Colella  Verica Jovanovic  Mitra Drakulovic  Milena Vasic  Habiba Mamlouk  Latifa Maazaoui  Mondher Bejaoui  Khatuna Zakhashvili  Irine Kalandadze  Paata Imnadze  Silvia Declich   《Zoonoses and public health》2019,66(3):276-287

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Loss of nitrogen from alkali soils     

S.P Mitra  Raghubir Singh 《Soil Science and Plant Nutrition》2013,59(2):75-80

Practical agriculturists all over the world have reported losses of nitrogen from the fields when nitrogenous fertilizers are applied. They have observed that whole of the nitrogen is not utilized by the plants but a major Portion is lost as nitrogen gas. The inorganic mtrogen compounds -ammonia and nitratessUffer several types of loss from the soil. They may be taken up by growing plants, they may be assimulated into the bodies of microorganisms and so brought back into the organic nitrogen reservoir, they may be converted into volatile compounds and lost into the air or they may be leached out of soil.  相似文献   

Nodulation signaling in legumes requires NSP2, a member of the GRAS family of transcriptional regulators   总被引：1，自引：0，他引：1  

Kaló P  Gleason C  Edwards A  Marsh J  Mitra RM  Hirsch S  Jakab J  Sims S  Long SR  Rogers J  Kiss GB  Downie JA  Oldroyd GE 《Science (New York, N.Y.)》2005,308(5729):1786-1789

Rhizobial bacteria enter a symbiotic interaction with legumes, activating diverse responses in roots through the lipochito oligosaccharide signaling molecule Nod factor. Here, we show that NSP2 from Medicago truncatula encodes a GRAS protein essential for Nod-factor signaling. NSP2 functions downstream of Nod-factor-induced calcium spiking and a calcium/calmodulin-dependent protein kinase. We show that NSP2-GFP expressed from a constitutive promoter is localized to the endoplasmic reticulum/nuclear envelope and relocalizes to the nucleus after Nod-factor elicitation. This work provides evidence that a GRAS protein transduces calcium signals in plants and provides a possible regulator of Nod-factor-inducible gene expression.  相似文献   

The Indian Ocean experiment: widespread air pollution from South and Southeast Asia   总被引：1，自引：0，他引：1  

Lelieveld J  Crutzen PJ  Ramanathan V  Andreae MO  Brenninkmeijer CM  Campos T  Cass GR  Dickerson RR  Fischer H  de Gouw JA  Hansel A  Jefferson A  Kley D  de Laat AT  Lal S  Lawrence MG  Lobert JM  Mayol-Bracero OL  Mitra AP  Novakov T  Oltmans SJ  Prather KA  Reiner T  Rodhe H  Scheeren HA  Sikka D  Williams J 《Science (New York, N.Y.)》2001,291(5506):1031-1036

The Indian Ocean Experiment (INDOEX) was an international, multiplatform field campaign to measure long-range transport of air pollution from South and Southeast Asia toward the Indian Ocean during the dry monsoon season in January to March 1999. Surprisingly high pollution levels were observed over the entire northern Indian Ocean toward the Intertropical Convergence Zone at about 6 degrees S. We show that agricultural burning and especially biofuel use enhance carbon monoxide concentrations. Fossil fuel combustion and biomass burning cause a high aerosol loading. The growing pollution in this region gives rise to extensive air quality degradation with local, regional, and global implications, including a reduction of the oxidizing power of the atmosphere.  相似文献