NDLI: Identification of exotic genetic components and DNA methylation pattern analysis of three cotton introgression lines from Gossypium bickii

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Identification of exotic genetic components and DNA methylation pattern analysis of three cotton introgression lines from Gossypium bickii

Content Provider	Springer Nature Link
Author	He, Shou Pu Sun, Jun Ling Zhang, Chao Du, Xiong Ming
Copyright Year	2011
Abstract	The impact of alien DNA fragments on plant genome has been studied in many species. However, little is known about the introgression lines of Gossypium. To study the consequences of introgression in Gossypium, we investigated ∼2000 genomic and ∼800 epigenetic sites in three typical cotton introgression lines, as well as their cultivar (Gossypium hirsutum) and wild parents (Gossypium bickii), by amplified fragment length polymorphism (AFLP) and methylation-sensitive amplified polymorphism (MSAP). The results demonstrate that an average of 0.5% of exotic DNA segments from wild cotton is transmitted into the genome of each introgression line, with the addition of other forms of genetic variation. In total, an average of 0.7% of genetic variation sites is identified in introgression lines. Simultaneously, the overall cytosine methylation level in each introgression line is very close to that of the upland cotton parent (an average of 22.6%). Further dividing patterns reveal that both hypomethylation and hypermethylation occurred in introgression lines in comparison with the upland cotton parent. Sequencing of nine methylation polymorphism fragments showed that most (7 of 9) of the methylation alternations occurred in the noncoding sequences. The molecular evidence of introgression from wild cotton into introgression lines in our study is identified by AFLP. Moreover, the causes of petal variation in introgression lines are discussed.
Starting Page	204
Ending Page	210
Page Count	7
File Format	PDF
ISSN	00268933
Journal	Molecular Biology
Volume Number	45
Issue Number	2
e-ISSN	16083245
Language	English
Publisher	SP MAIK Nauka/Interperiodica
Publisher Date	2011-04-26
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Gossypium hirsutum Gossypium bickii introgression AFLP MSAP Human Genetics Biochemistry Life Sciences
Content Type	Text
Resource Type	Article
Subject	Structural Biology Biophysics

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