Genes for long lifespan of banyan, peepal trees identified

• Researchers recently carried out whole genome sequencing of banyan (Ficus benghalensis) and peepal(Ficus religiosa) from leaf tissue samples.
• They also undertook a comprehensive genome-wide phylogenetic analysis with 50 other angiosperm plant species.

Key Findings of the study

• Identification of signatures of adaptive evolution in genes: associated with providing longevity in both the species.
• Genes showed multiple signs of adaptation: Genes related to sustained growth and development.
• Adaptive evolution in genes in 2 cellular mecha
• nisms: to explain well- developed aerial roots that is unique to banyan trees.
• Both plants show genes with signatures of multiple adaptive evolution: involved in phytohormone signalling pathways that regulate plant developmental senescence and ageing processes.
• Both trees have select plant disease resistance gene families: that are expanded through gene duplication events in the course of evolution.
• ~ 90% of MSA genes in both trees are associated with tolerance: against biotic and abiotic stress responses.