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KMID : 0578320200430010086
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Molecules and Cells
2020 Volume.43 No. 1 p.86 ~ p.95
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Whole Genome Analysis of the Red-Crowned Crane Provides Insight into Avian Longevity
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Lee Hye-Jin
Kim Jung-Eun
Weber Jessica A.
Chung Ok-Sung
Cho Yun-Sung
Jho Sung-Woong
Jun Je-Hoon
Kim Hak-Min
Lim Jeong-Heui
Choi Jae-Pil
Jeon Sung-Won
Blazyte Asta
Edwards Jeremy S.
Paek Woon-Kee
Bhak Jong
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Abstract
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The red-crowned crane (Grus japonensis) is an endangered, large-bodied crane native to East Asia. It is a traditional symbol of longevity and its long lifespan has been confirmed both in captivity and in the wild. Lifespan in birds is known to be positively correlated with body size and negatively correlated with metabolic rate, though the genetic mechanisms for the red-crowned crane’s long lifespan have not previously been investigated. Using whole genome sequencing and comparative evolutionary analyses against the grey-crowned crane and other avian genomes, including the long-lived common ostrich, we identified red-crowned crane candidate genes with known associations with longevity. Among these are positively selected genes in metabolism and immunity pathways (NDUFA5, NDUFA8, NUDT12, SOD3, CTH, RPA1, PHAX, HNMT, HS2ST1, PPCDC, PSTK CD8B, GP9, IL-9R, and PTPRC). Our analyses provide genetic evidence for low metabolic rate and longevity, accompanied by possible convergent adaptation signatures among distantly related large and long-lived birds. Finally, we identified low genetic diversity in the red-crowned crane, consistent with its listing as an endangered species, and this genome should provide a useful genetic resource for future conservation studies of this rare and iconic species.
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KEYWORD
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genome, longevity, red-crowned crane
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