DataSheet_1_Complete mitochondrial genome of Syzygium samarangense reveals genomic recombination, gene transfer, and RNA editing events.zip

Wax apple (Syzygium samarangense) is a commercial fruit that belongs to one of the most species-rich tree genera in the world. We report here the first complete S. samarangense mitogenome obtained using a hybrid assembly strategy. The mitogenome was a 530,242 bp circular molecule encoding 61 unique genes accounting for 7.99% of the full-length genome. Additionally, 167 simple sequence repeats, 19 tandem repeats, and 529 pairs of interspersed repeats were identified. Long read mapping and Sanger sequencing revealed the involvement of two forward repeats (35,843 bp and 22,925 bp) in mediating recombination. Thirteen homologous fragments in the chloroplast genome were identified, accounting for 1.53% of the mitogenome, and the longest fragment was 2,432 bp. An evolutionary analysis showed that S. samarangense underwent multiple genomic reorganization events and lost at least four protein-coding genes (PCGs) (rps2, rps7, rps11, and rps19). A total of 591 RNA editing sites were predicted in 37 PCGs, of which nad1-2, nad4L-2, and rps10-2 led to the gain of new start codons, while atp6-1156, ccmFC-1315 and rps10-331 created new stop codons. This study reveals the genetic features of the S. samarangense mitogenome and provides a scientific basis for further studies of traits with an epistatic basis and for germplasm identification.</p

Macroporous Carbon-Supported Fe-Based Catalysts for the Solvent-Free Oxidative Coupling of Benzylamine

Transition metal and nitrogen codecorated carbon materials have recently emerged as robust and efficient heterogeneous catalysts because of their unique electronic structure, superior activity, and high metal utilization. The most popular synthetic strategy for those catalysts is the direct pyrolysis of C- and N-containing precursors and metal salts, but the obtained products often suffer from structural heterogeneity of the active metal sites and poor mass transport. Herein, a hard template-assisted metal coordinated polymer is developed to synthesize a series of three-dimensional (3D) M-600-X (M = Fe, Co, Ni, Cu; X = 700, 800, 900 °C) catalysts with an advanced trimodal pore structure via a well-controlled two-step pyrolysis. Due to a preliminary annealing at 600 °C, it is possible to control the coordination configuration of the M–Nx moiety and the metal speciation by regulating the subsequent pyrolysis temperature. The 3D Fe-600-800 catalyst exhibited excellent catalytic performance in the oxidative coupling of benzylamine under solvent-free conditions due to the active Fe–N3 moiety as well as the synergy between the atomic Fe sites and the Fe/Fe3C nanoparticles. Moreover, this synthetic approach can also be employed in gram-scale production, and the obtained catalysts still possess superior activity and favorable stability, even in large-scale imine production. Thus, this work enables the rational design of cost-effective carbon-supported transition metal-based catalysts for highly efficient organic transformation