Details

Autor(en) / Beteiligte

• Kim, Seungill
• Park, Jieun
• Yeom, Seon-In
• Kim, Yong-Min
• Seo, Eunyoung
• Kim, Ki-Tae
• Kim, Myung-Shin
• Lee, Je Min
• Cheong, Kyeongchae
• Shin, Ho-Sub
• Kim, Saet-Byul
• Han, Koeun
• Lee, Jundae
• Park, Minkyu
• Lee, Hyun-Ah
• Lee, Hye-Young
• Lee, Youngsill
• Oh, Soohyun
• Lee, Joo Hyun
• Choi, Eunhye
• Choi, Eunbi
• Lee, So Eui
• Jeon, Jongbum
• Kim, Hyunbin
• Choi, Gobong
• Song, Hyeunjeong
• Lee, JunKi
• Lee, Sang-Choon
• Kwon, Jin-Kyung
• Lee, Hea-Young
• Koo, Namjin
• Hong, Yunji
• Kim, Ryan W
• Kang, Won-Hee
• Huh, Jin Hoe
• Kang, Byoung-Cheorl
• Yang, Tae-Jin
• Lee, Yong-Hwan
• Bennetzen, Jeffrey L
• Choi, Doil

Titel

New reference genome sequences of hot pepper reveal the massive evolution of plant disease-resistance genes by retroduplication

Ist Teil von

• Genome Biology, 2017-11, Vol.18 (1), p.210-11, Article 210

Ort / Verlag

England: BioMed Central

Erscheinungsjahr

2017

Quelle

MEDLINE

Beschreibungen/Notizen

• Transposable elements are major evolutionary forces which can cause new genome structure and species diversification. The role of transposable elements in the expansion of nucleotide-binding and leucine-rich-repeat proteins (NLRs), the major disease-resistance gene families, has been unexplored in plants. We report two high-quality de novo genomes (Capsicum baccatum and C. chinense) and an improved reference genome (C. annuum) for peppers. Dynamic genome rearrangements involving translocations among chromosomes 3, 5, and 9 were detected in comparison between C. baccatum and the two other peppers. The amplification of athila LTR-retrotransposons, members of the gypsy superfamily, led to genome expansion in C. baccatum. In-depth genome-wide comparison of genes and repeats unveiled that the copy numbers of NLRs were greatly increased by LTR-retrotransposon-mediated retroduplication. Moreover, retroduplicated NLRs are abundant across the angiosperms and, in most cases, are lineage-specific. Our study reveals that retroduplication has played key roles for the massive emergence of NLR genes including functional disease-resistance genes in pepper plants.