Chromatographic Separation of Te(IV) & Te(VI)

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Development of a RAD-Seq Based DNA Polymorphism Identification Software, AgroMarker Finder, and Its Application in Rice Marker-Assisted Breeding

Abstract Rapid and accurate genome-wide marker detection is essential to the marker-assisted breeding and functional genomics studies. In this work, we developed an integrated software, AgroMarker Finder (AMF: http://erp.novelbio.com/AMF), for providing graphical user interface (GUI) to facilitate the recently developed restriction-site associated DNA (RAD) sequencing data analysis in rice. By application of AMF, a total of 90,743 high-quality markers (82,878 SNPs and 7,865 InDels) were detected between rice varieties JP69 and Jiaoyuan5A. The density of the identified markers is 0.2 per Kb for SNP markers, and 0.02 per Kb for InDel markers. Sequencing validation revealed that the accuracy of genome-wide marker detection by AMF is 93%. In addition, a validated subset of 82 SNPs and 31 InDels were found to be closely linked to 117 important agronomic trait genes, providing a basis for subsequent marker-assisted selection (MAS) and variety identification. Furthermore, we selected 12 markers from 31 validated InDel markers to identify seed authenticity of variety Jiaoyuanyou69, and we also identified 10 markers closely linked to the fragrant gene BADH2 to minimize linkage drag for Wuxiang075 (BADH2 donor)/Jiachang1 recombinants selection. Therefore, this software provides an efficient approach for marker identification from RAD-seq data, and it would be a valuable tool for plant MAS and variety protection

Maize (Zea mays L.) Genome Diversity as Revealed by RNA-Sequencing

Maize is rich in genetic and phenotypic diversity. Understanding the sequence, structural, and expression variation that contributes to phenotypic diversity would facilitate more efficient varietal improvement. RNA based sequencing (RNA-seq) is a powerful approach for transcriptional analysis, assessing sequence variation, and identifying novel transcript sequences, particularly in large, complex, repetitive genomes such as maize. In this study, we sequenced RNA from whole seedlings of 21 maize inbred lines representing diverse North American and exotic germplasm. Single nucleotide polymorphism (SNP) detection identified 351,710 polymorphic loci distributed throughout the genome covering 22,830 annotated genes. Tight clustering of two distinct heterotic groups and exotic lines was evident using these SNPs as genetic markers. Transcript abundance analysis revealed minimal variation in the total number of genes expressed across these 21 lines (57.1% to 66.0%). However, the transcribed gene set among the 21 lines varied, with 48.7% expressed in all of the lines, 27.9% expressed in one to 20 lines, and 23.4% expressed in none of the lines. De novo assembly of RNA-seq reads that did not map to the reference B73 genome sequence revealed 1,321 high confidence novel transcripts, of which, 564 loci were present in all 21 lines, including B73, and 757 loci were restricted to a subset of the lines. RT-PCR validation demonstrated 87.5% concordance with the computational prediction of these expressed novel transcripts. Intriguingly, 145 of the novel de novo assembled loci were present in lines from only one of the two heterotic groups consistent with the hypothesis that, in addition to sequence polymorphisms and transcript abundance, transcript presence/absence variation is present and, thereby, may be a mechanism contributing to the genetic basis of heterosis

In vitro propagation of a rare succulent medicinal plant Caralluma diffusa (Wight) N.E.Br

Caralluma diffusa (Wight) N.E.Br is rare and an endemic medicinally important plantbelonging to the family Asclepiadaceae. A cost effective and efficient protocol has beendescribed in the present work for large scale and rapid propagation through in vitro organogenesis using nodal explants cultured on Murashige and Skoog’s (MS) media fortifiedwith BAP, 2,4-D, NAA and Kn. The highest frequency ( 83.3%) of callus was observed in MSmedium containing NAA (2mg/L) in combination with BAP (0.5mg/L) + Kn (0.25mg/L).Development of highest percentage of shoot organogenesis (82.4%) occurred when the calliwere sub cultured in MS medium supplemented with combination of BAP + NAA + Kn (2.0+ 0.5 + 0.25mg/L). Multiple shoots were induced from the nodal segments cultured onmedium containing BAP or Kn alone or in combination. Highest number of shoots(6.40±0.34) and maximum length of shoots (6.61±1.01cm) were obtained on MS mediumcontaining BAP (2.5mg/L). These shoots were then cultured on half strength MS mediumsupplemented with various concentrations of IBA and NAA. Highest percentage of rooting(78.4%) and mean length of rootlets was observed on IBA (0.5mg/L) in combination withNAA (0.5mg/L). In vitro derived plantlets were hardened and acclimatized. About 98% ofplantlets survived in field condition. The method described here can be successfully employed for large scale multiplication, long term in vitro conservation. This is the firstreport on indirect organogenesis of universally threatened cacti C. diffusa

A Technical Survey on Intelligent Optimization Grouping Algorithms for Finite State Automata in Deep Packet Inspection

© 2020, CIMNE, Barcelona, Spain. Construction and deployment of finite state automata from the regular expressions might results in huge overhead and results in the state explosion problem which is in need of large memory space, high bandwidth and additional computational time. To overcome this problem, a new framework is proposed, and several intelligent optimization algorithms are reviewed and compared in this framework. The proposed approach is called intelligent optimization grouping algorithms (IOGA), which intends to group regular expression intelligently. IOGAs are used to allocate the regular expression sets into various groups and to build independent deterministic finite automata (DFA) for each group. Grouping the regular expression efficiently solves the state explosion problem by achieving large-scale best tradeoff among memory utilization and computational time. This study reviews and compares the various alternatives of IOGA including genetic algorithm, ant colony optimization, particle swarm optimization, bacterial foraging optimization, artificial bee colony algorithm, biogeography based optimization, cuckoo search, firefly algorithm, bat algorithm and flower pollination algorithm for solving the problem of DFA state explosion and also for improving the overall efficiency of deep packet inspection (DPI). The discussions state that by effectively using these grouping algorithms along with DFA based DPI, the number of states can be reduced, providing a balance between the memory consumption, time complexity, throughput, inspection speed, convergence speed and grouping time

Chloring e6 Sensitized Photovoltaic Cells: Effect of Co-Adsorbents on Cell Performance, Charge Transfer Resistance, and Charge Recombination Dynamics

This article investigates the effect of dye-aggregation-preventing co-adsorbents, cholic acid and deoxycholic acid, on the performance of dye-sensitized solar cells constructed using a metal-free sensitizer, chlorin e6 adsorbed onto TiO₂ surface

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Not AvailableCoscinium fenestratum (CF) (Gaertn.) Colebr. is a hard woody climber medicinal plant belongs to the family, Menispermaceae. The plant is commonly known as tree turmeric because the stem content yellow berberine, the major active constituent. The plant is widely available in Western Ghats region but became endangered due to over exploitation and very slow germination rate. Hence, the alternate in vitro tissue culture has established for reduced germination rate and to extract more amount of plant constituents from the stem callus. Full strength MS medium supplemented with 2, 4-D at 0.1 mg/l and kinetin at 2 mg/l gave callus growth in 46 days and the growth mechanism is observed first time through SEM study of callus. Thereafter, rooting of callus occurred in IBA and kinetin in combinations in half strength MS medium whereas direct rooting of stem occurred with IBA and zinc sulphate (IBA at 2 mg/l and ZnSO4 at 3 mg/l) supplemented in half strength MS media along with coconut water, within 18 days. Thereafter, extracted callus is identified with TLC, followed by estimated with HPLC and HPTLC and resulted methanol extract of CF showed higher content of berberine than aqueous extract.Not Availabl

Sequential Photoinduced Energy and Electron Transfer Directed Improved Performance of the Supramolecular Solar Cell of a Zinc Porphyrin–Zinc Phthalocyanine Conjugate Modified TiO₂ Surface

Improved performance of a photosynthetic antenna–reaction center mimicking supramolecular solar cell is demonstrated. Toward this, porphyrin–phthalocyanine conjugates connected by amide linkers, as wide-band capturing solar energy harvesting materials, have been newly synthesized and characterized. Efficient singlet–singlet energy transfer from the zinc or free-base porphyrin to phthalocyanine is evidenced from steady-state emission and transient absorption studies in nonpolar and polar solvents. Further, the dyad was immobilized via axial coordination of zinc porphyrin of the dyad on semiconducting TiO₂ surface modified with axial coordinating ligand functionality, phenylimidazole. Photoelectrochemical studies revealed improved performance of this cell compared to either zinc porphyrin or zinc phthalocyanine only modified electrodes under similar experimental conditions. Transient absorption studies performed on the dyad immobilized on glass/TiO₂ surface suggested that upon excitation of the axially coordinated zinc porphyrin of the dyad singlet–singlet energy transfer to zinc phthalocyanine occurs within 0.2 ps instead of a competing charge injection reaction from the singlet excited zinc porphyrin to TiO₂. Further, sequential photoinduced electron transfer from the newly formed singlet excited zinc phthalocyanine to zinc porphyrin producing ZnP^•––ZnPc^•+ with a 2 ps time constant and followed by electron injection from the ZnP^•– to TiO₂ within 30 ps has been proposed as a mechanism of photocurrent generation in the biomimetic supramolecular photocell