Genetic diversity analysis using molecular marker in Terminalia chebula

Terminalia chebula is an important medicinal plant, extensively used in Ayurveda, Unani and Homoeopathic medicines. The present study was aimed to reveal its genetic diversity based on molecular markers from twelve T. chebula accessions. Molecular diversity was studied using RAPD markers. A total of 8 polymorphic primers produced 314 polymorphic bands and 195 monomorphic bands. Unweighted Pair Group Method with Arithmetic Mean (UPMGA) dendrogram divided the accessions into 2 major clusters. Accession IIHRTc2 and IIHRTc10 showed maximum genetic diversity with 55% similarity. This characterization based on molecular markers will help in identification of economically useful accessions for further crop improvement programme

Crystal structure of 2-(2,4-dichlorophenyl)-4-hydroxy-9-phenylsulfonyl-9H-carbazole-3-carbaldehyde

In the title compound, C25H15Cl2NO4S, the dichlorophenyl ring is twisted by 68.69 (11)° from the mean plane of the carbazole ring system [r.m.s. deviation = 0.084 (2)°]. The hydroxy group is involved in an intramolecular O—H...O hydrogen bond, which generates an S(6) graph-set motif. In the crystal, pairs of C—H...Cl hydrogen bonds link molecules into inversion dimers with an R22(26) motif. Weak C—H...O interactions further link these dimers into ribbons propagating in [100]

The I-tetraplex building block: rational design and controlled fabrication of robust 1D DNA scaffolds through non-Watson–Crick interactions

Robust 1D scaffolds have been designed based on the i tetraplex by a strategy of inducing bidirectional growth on “slipped” tetraplexes. The growth propagates through non‐Watson–Crick base‐pairing and leads to nanowires more than 3 μm long. These nanowires have been characterized by microscopy (AFM and TEM), surface‐enhanced Raman spectroscopy and circular dichroism spectroscopy