Relationships in lndian Araliaceae as inferred from sequences of Internal Transcribed spacer (ITS) Regions of Nuclear Ribosomal DNA
Pandey A.K., Jun Wen & M.K. Pathak
Published on : 01-Jan-2022
DOI : https://dx.doi.org/10.22244/rheedea.2004.14.1&2.01
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The lnternal Transcribed Spacer (lT5) regions of nuclear ribosomal DNAwere obtained lrom 2accessions belonging to nine genera (Aralia, Erassaiopsis, Eleutherococcus, , Heteropanax, Macropanax, Merriliopanax, panax, Schefflira and Tupidanthus) t0 assess relationships of Araliaceae in India. The ITS sequence data suggest two major clades of lndian Araliaceae: the Aralia - Panax clade and the lndian core palmate clade. The close relationship between Aralia and panax was strongly supported with a bootstrap value of 89%. The two species of Panax (the ginseng genus) form a monophyletic group. Three sections o{ Aralia occur in lndia and the genus was strongly suggested to be monophyletic with sect. Dimorphanthus and sect. Pentapanaxlorming a subclade. Within the lndian palmate ciade, thefollowing monophyletic groups are detected: rhe Heteropanax-schefflera-Tupidanthus group and the Eleutherococcus-Macropanax group. Merrilliopanax was found to form a clade with Brassaiopsis-Schefflera-Heteropanax-Tupidanthus. lndia is rich in species of Brassaiopsis. Our ITS phylogeny recognizes two groups within Erassaropsis:1. B. aculeata - B. glonerulata B. hainla - B. mitis - B. shweliensis and 2. B. hispida B. griffithii B. sinplicifolia.
