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The celery genome sequence reveals sequential paleo‐polyploidizations, karyotype evolution and resistance gene reduction in apiales

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Relation http://oar.icrisat.org/11685/
https://doi.org/10.1111/pbi.13499
doi:10.1111/pbi.13499
 
Title The celery genome sequence reveals sequential paleo‐polyploidizations, karyotype evolution and resistance gene reduction in apiales
 
Creator Song, X
Sun, P
Yuan, J
Gong, K
Li, N
Meng, F
Zhang, Z
Li, X
Hu, J
Wang, J
Yang, Q
Jiao, B
Nie, F
Liu, T
Chen, W
Feng, S
Pei, Q
Yu, T
Kang, X
Zhao, W
Cui, C
Yu, Y
Wu, T
Shan, L
Liu, M
Qin, Z
Lin, H
Varshney, R K
Li, X Q
Paterson, A H
Wang, X
 
Subject Vegetable and Field crops
Genetics and Genomics
 
Description Celery (Apium graveolens L. 2n = 2x = 22), a member of the Apiaceae family, is among the
most important and globally grown vegetables. Here, we report a high-quality genome sequence
assembly, anchored to 11 chromosomes, with total length of 3.33 Gb and N50 scaffold length
of 289.78 Mb. Most (92.91%) of the genome is composed of repetitive sequences, with
62.12% of 31 326 annotated genes confined to the terminal 20% of chromosomes.
Simultaneous bursts of shared long-terminal repeats (LTRs) in different Apiaceae plants suggest
inter-specific exchanges. Two ancestral polyploidizations were inferred, one shared by Apiales
taxa and the other confined to Apiaceae. We reconstructed 8 Apiales proto-chromosomes,
inferring their evolutionary trajectories from the eudicot common ancestor to extant plants.
Transcriptome sequencing in three tissues (roots, leaves and petioles), and varieties with
different-coloured petioles, revealed 4 and 2 key genes in pathways regulating anthocyanin and
coumarin biosynthesis, respectively. A remarkable paucity of NBS disease-resistant genes in
celery (62) and other Apiales was explained by extensive loss and limited production of these
genes during the last ~10 million years, raising questions about their biotic defence mechanisms
and motivating research into effects of chemicals, for example coumarins, that give off
distinctive odours. Celery genome sequencing and annotation facilitates further research into
important gene functions and breeding, and comparative genomic analyses in Apiales.
 
Publisher Association of Applied Biologist
 
Date 2020-11
 
Type Article
PeerReviewed
 
Format application/pdf
 
Language en
 
Identifier http://oar.icrisat.org/11685/1/pbi.13499.pdf
Song, X and Sun, P and Yuan, J and Gong, K and Li, N and Meng, F and Zhang, Z and Li, X and Hu, J and Wang, J and Yang, Q and Jiao, B and Nie, F and Liu, T and Chen, W and Feng, S and Pei, Q and Yu, T and Kang, X and Zhao, W and Cui, C and Yu, Y and Wu, T and Shan, L and Liu, M and Qin, Z and Lin, H and Varshney, R K and Li, X Q and Paterson, A H and Wang, X (2020) The celery genome sequence reveals sequential paleo‐polyploidizations, karyotype evolution and resistance gene reduction in apiales. Plant Biotechnology Journal (TSI). pp. 1-14. ISSN 1467-7644