Publications by authors named "P Schiffer"
We have studied the magnetic moments of artificial spin ice arrays of nanomagnets in both undistorted square arrays and in arrays with a topological defect induced by a single disclination. We confirm that the disclination induces global, macroscopic changes in the low-energy collective states of the nanomagnet moment configuration. Specifically, the disclination leads to Faraday lines of effective magnetic flux that run from the center all the way to the edge of the arrays.
View Article and Find Full Text PDFMeloidogyne enterolobii, a guava root-knot nematode, is a highly virulent pest in tropical and subtropical regions causing galls or knots in roots of diverse plant species posing a serious threat to agriculture. Managing this nematode is challenging due to limitations in conventional identification based on isolation and microscopic classification requiring expertise and time. A colorimetric and fluorescent LAMP assay using simplified extraction method targeting rDNA-ITS region was developed to detect M.
View Article and Find Full Text PDFUnicellular green algae of the genus Coccomyxa are recognized for their worldwide distribution and ecological versatility. Coccomyxa elongata is a freshwater species of the Coccomyxa simplex clade, which also includes lichen symbionts. To facilitate future molecular and phylogenomic studies of this versatile clade of algae, we generated a high-quality genome assembly for C.
View Article and Find Full Text PDFArticle Synopsis
- Hox genes are essential for body plan development and evolution in both invertebrates and vertebrates, influencing early cell fate decisions in embryos.
- The typical Hox gene structure includes nine ortholog groups (HOX1-HOX9) in a coordinated cluster, but C. elegans deviates from this by having a non-clustered arrangement with only six Hox genes from four groups.
- Recent genome sequencing of 80 nematode species revealed variability in Hox gene presence and organization, uncovering some intact gene clusters, contrary to the scattered arrangement seen in C. elegans.
Article Synopsis
- The evolutionary origin of Bilateria is unclear, but similarities between cnidarian-like larvae and simple flatworms suggest a connection, linking Xenacoelomorpha as a potential early branch of Bilateria.
- This study focuses on assembling and analyzing the genome of a marine xenacoelomorph, discovering it has a genome size of ~111 Mbp with characteristics similar to other bilaterians.
- The findings indicate that despite its simple body plan, the xenacoelomorph has a complex genome and retains many features typical of bilaterians, challenging previous assumptions about its evolutionary simplicity.