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The Role of Transposable Elements in Soybean Genome Sequencing and Evolution

Transposable elements (TEs), also known as "jumping genes," are DNA sequences that can relocate within the genome, first discovered in maize by Barbara McClintock in 1948. Constituting around 35-50% of the genome in many higher organisms, TEs were once thought to be "molecular junk" but are now recognized as crucial components in the genetic blueprint of plants and animals. This project highlights the significance of TEs in the soybean genome, detailing the latest sequencing efforts and their implications in genetic diversity and evolution.

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The Role of Transposable Elements in Soybean Genome Sequencing and Evolution

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  1. BLASTFOR GENOMICS Jianxin Ma maj@purdue.edu Department of Agronomy Purdue University

  2. Soybean Genome Sequencing Project DOE-JGI Community Sequencing Program Brassica Genome Sequencing Project BGI-Shenzhen, Chinese Academy of Agricultural Sciences

  3. Why transposable elements? • Transposable elements (TEs), popularly called “jumping genes” are sequences of DNA that can move around to different chromosomal positions in a cell. • First TEs were discovered in maize in 1948 by Barbara McClintock Awarded the Nobel Prize in 1983 (1902-1992) • TEs make up a large fraction of genome sizes in most higher organisms: • TEs were often referred to be “molecular junk”, but are now recognized as important, even crucial parts of the blueprints of plants and animals: ~35% ~50%

  4. The Landscape of the Soybean Genome Schmutz et al., 2010, Nature

  5. 42% 157 families 353 families 16% 58% Du et al., 2010, BMC Genomics

  6. Structure-based analysis and Homology-based analysis (BLAST)

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