文献类型: 外文期刊
第一作者: Zhanyou Xu
作者: Zhanyou Xu;Russell J. Kohel;Guoli Song;Jaemin Cho;Magdy Alabady;Jing Yu;Pamela Koo;Jun Chu;Shuxun Yu;Thea A. Wilkins;Yuxian Zhu;John Z. Yu
作者机构:
关键词: cotton;fiber development;EST unigenes;gene-rich islands;gene network
期刊名称:GENOMICS ( 影响因子:5.736; 五年影响因子:4.939 )
ISSN: 0888-7543
年卷期: 2008 年 92 卷 3 期
页码:
收录情况: SCI
摘要: Cotton fiber is an economically important seed trichome and the world's leading natural fiber used in the manufacture of textiles. As a step toward elucidating the genomic organization and distribution of gene networks responsible for cotton fiber development, we investigated the distribution of fiber genes in the cotton genome. Results revealed the presence of gene-rich islands for fiber genes with a biased distribution in the tetraploid cotton (Gossypium hirsutum L.) genome that was also linked to discrete fiber developmental stages based on expression profiles. There were 3 fiber gene-rich islands associated with fiber initiation on chromosome 5, 3 islands for the early to middle elongation stage on chromosome 10, 3 islands for the middle to late elongation stage on chromosome 14, and 1 island on chromosome 15 for secondary cell wall deposition, for a total of 10 fiber gene-rich islands. Clustering of functionally related gene Clusters in the cotton genome displaying similar transcriptional regulation indicates an organizational hierarchy with significant implications for the genetic enhancement of particular fiber quality traits. The relationship between gene-island distribution and functional expression profiling suggests for the first time the existence Of functional coupling gene clusters in the cotton genome. Published by Elsevier Inc.
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