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  • Title: Characterization of 19 novel cotton FLA genes and their expression profiling in fiber development and in response to phytohormones and salt stress.
    Author: Huang GQ, Xu WL, Gong SY, Li B, Wang XL, Xu D, Li XB.
    Journal: Physiol Plant; 2008 Oct; 134(2):348-59. PubMed ID: 18507812.
    Abstract:
    Fasciclin-like arabinogalactan proteins (FLAs), a subclass of arabinogalactan proteins (AGPs), are usually involved in cell development in plants. To investigate the expression profiling as well as the role of FLA genes in fiber development, 19 GhFLA genes (cDNAs) were isolated from cotton (Gossypium hirsutum). Among them, 15 are predicted to be glycosylphosphatidylinositol anchored to the plasma membranes. The isolated cotton FLAs could be divided into four groups. Real-time quantitative reverse transcriptase polymerase chain reaction results indicated that the GhFLA genes are differentially expressed in cotton tissues. Three genes (GhFLA1/2/4) were specifically or predominantly expressed in 10 days post-anthesis fibers, and the transcripts of the other four genes (GhFLA6/14/15/18) were accumulated at relatively high levels in cotton fibers. Furthermore, expressions of the GhFLA genes are regulated in fiber development and in response to phytohormones and NaCl. The identification of cotton FLAs will facilitate the study of their roles in cotton fiber development and cell wall biogenesis.
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