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Peopling of Australia:’Reconstructing Indian-Australian Phylogenetic Link’ Satish Kumar et al

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Although this is described as a provisional paper, and therefore subject to alteration before official publication, it’s published in full as a provisional pdf, in which it is proposed that the genetic footprints of Australia’s first inhabitants, estimated to have arrived around 45,000 years BP, can be detected in modern-day Indian populations. The main points covered in the paper are as follows:

Background:  An early dispersal of biologically and behaviorally modern humans from their African origins to Australia, by at least 45 thousand years via southern Asia has been suggested by studies based on morphology, archaeology and genetics. However, mtDNA lineages sampled so far from south Asia, eastern Asia and Australasia show non-overlapping distributions of haplogroups within pan Eurasian M and N macrohaplogroups. Likewise, support from the archaeology is still ambiguous.

Results:  In our completely sequenced 966-mitochondrial genomes from 26 relic tribes of India, we have identified seven genomes, which share two synonymous polymorphisms with the M42 haplogroup, which is specific to Australian Aborigines.

Conclusions  Our results showing a shared mtDNA lineage between Indians and Australian Aborigines provides direct genetic evidence of an early colonization of Australia through south Asia, following the “southern route”.

Reference: Reconstructing Indian-Australian Phylogenetic Link by Satish Kumar, Rajasekhara REDDY Ravuri, Padmaja Koneru, B P Urade, B N Sarkar, A Chandrasekar and V R Rao.

BMC Evolutionary Biology 2009, 9:173 doi:10.1186/1471-2148-9-173

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