Chemical components content of seven Indonesian bamboo species were investigated. Bamboo species used in this study including Andong bamboo (Gigantochloa pseudoarundinacea), Tali bamboo (G.apus), Hitam bamboo (G. artoviolacea), Betung bamboo (Dendrocalamus asper), Sembilang bamboo (D. giganteus), Ampel bamboo (Bambusa vulgaris var. vulgaris), and Kuning bamboo (B. vulgaris var. striata). Holocellulose, alphacellulose, Klason lignin, acid-soluble lignin, extractives content, and pH value were determined. The highest holocellulose and alphacellulose content were found in Ampel and Hitam bamboo, respectively. Sembilang bamboo has the highest lignin content. Generally, Ampel bamboo has the highest extractives content. The pH value of the seven bamboo species showed that all bamboo species tend to be acidic.

ABSTRACT. We sequenced and characterized the complete mitogenome (KX964606) of the Amur hedgehog Erinaceus amurensis to provide more data for comparative mitogenomics of the genus Erinaceus (Erinaceidae). The mitogenome of E. amurensis is a circular molecule 16,941 bp long, consisting of a control region and a conserved set of 37 genes containing 13 protein-coding genes, 22 tRNA genes, and two rRNA genes (12S rRNA and 16S rRNA). The mitogenome of E. amurensis is AT-biased, with a nucleotide composition of 33.9% A, 21.1% C, 32.6% T, and 12.4% G. The mitogenomes of E. amurensis and the closely related hedgehog species E. europaeus, excluding the control region (66.7%), share over 90% sequence similarity. According to the inter-generic relationship based on six mitogenomes described from five genera of Erinaceidae, the subfamilies Erinaceinae and Galericinae are strongly supported as monophyletic groups, with each genus well placed within its own subfamily. Within the subfamily Erinaceinae, E. amurensis is a sister species to E. europaeus, and the relationship between Hemiechinus and Erinaceus is strongly supported. Within the subfamily Galericinae, the clade of Hylomys + Neotetracus was sister to that of Echinosorex, with clades supported by high values. Our findings will help to understand the codon usage pattern and molecular evolution of E. amurensis, and provide insight into intergeneric relationships within the family Erinaceidae. In future studies, the inclusion of mitogenomes from other genera would greatly enhance our understanding of higher phylogeny within the Erinaceidae.