Progress in Understanding and Sequencing the Genome of Brassica rapa.

Progress in Understanding and Sequencing the Genome of Brassica rapa. Research Abstract Details 

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Progress in Understanding and Sequencing the Genome of Brassica rapa. Abstract Text:

Chang Pyo Hong,Soo-Jin Kwon,Jung Sun Kim,Tae-Jin Yang,Beom-Seok Park,Yong Pyo Lim,

Brassica rapa, which is closely related to Arabidopsis thaliana, is an important crop and a model plant for studying genome evolution via polyploidization. We report the current understanding of the genome structure of B. rapa and efforts for the whole-genome sequencing of the species. The tribe Brassicaceae, which comprises ca. 240 species, descended from a common hexaploid ancestor with a basic genome similar to that of Arabidopsis. Chromosome rearrangements, including fusions and/or fissions, resulted in the present-day "diploid" Brassica species with variation in chromosome number and phenotype. Triplicated genomic segments of B. rapa are collinear to those of A. thaliana with InDels. The genome triplication has led to an approximately 1.7-fold increase in the B. rapa gene number compared to that of A. thaliana. Repetitive DNA of B. rapa has also been extensively amplified and has diverged from that of A. thaliana. For its whole-genome sequencing, the Brassica rapa Genome Sequencing Project (BrGSP) consortium has developed suitable genomic resources and constructed genetic and physical maps. Ten chromosomes of B. rapa are being allocated to BrGSP consortium participants, and each chromosome will be sequenced by a BAC-by-BAC approach. Genome sequencing of B. rapa will offer a new perspective for plant biology and evolution in the context of polyploidization.

Progress in Understanding and Sequencing the Genome of Brassica rapa. Publishing Authors By Initials

CP Hong,SJ Kwon,JS Kim,TJ Yang,BS Park,YP Lim,

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Progress in Understanding and Sequencing the Genome of Brassica rapa. Journal Published:

PUBLICATION TYPE: Journal Article

Journal: International journal of plant genomics

VOLUME: 2008

Page Numbers: 582837

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ISSN: 1687-5370

DAY: 21

MONTH: 02

YEAR: 2008

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LANGUAGE: eng

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AFFILIATION: Department of Horticulture, College of Agriculture and Life Science, Chungnam National University, Daejeon 305764, South Korea.

Country: Egypt

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MEDLINETA: Int J Plant Genomics

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