Project description:Jeffersonia diphylla, which belongs to Berberidaceae, is a perennial herb native to North America. In the present study, we determined the first plastome of J. diphylla using genome skimming approach. The pastome of J. diphylla is 152,842 bp in length, with a large single copy region (LSC) of 82,266 bp and a small single copy region (SSC) of 19,284 bp separated by a pair of inverted repeats (IRs) of 25,646 bp. It encodes 113 unique genes, consisting of 79 protein-coding genes, 30 tRNA genes, and four rRNA genes, with 19 duplicated genes in the IR regions. Phylogenetic analysis indicates that J. diphylla is sister to Plagiorhegma dubium, subsequently is sister to a clade including Diphylleia, Sinopodophyllum, Podophyllum, Dysosma, Achlys, and Epimedium.
Project description:Chamaecrista diphylla (L.) Greene (Fabaceae/Caesalpiniaceae) is a herbaceous plant that is widely distributed throughout the Americas. Plants from this genus have been used in traditional medicine as a laxative, to heal wounds, and to treat ulcers, snake and scorpion bites. In the present study, we investigated the chemical composition of Chamaecrista diphylla leaves through a mass spectrometry molecular network approach. The oxygen radical absorbance capacity (ORAC) for the ethanolic extract, enriched fractions and isolated compounds was assessed. Overall, thirty-five compounds were annotated for the first time in C. diphylla. Thirty-two of them were reported for the first time in the genus. The isolated compounds 9, 12, 24 and 33 showed an excellent antioxidant capacity, superior to the extract and enriched fractions. Bond dissociation energy calculations were performed to explain and sustain the antioxidant capacity found. According to our results, the leaves of C. diphylla represent a promising source of potent antioxidant compounds.
