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Identifying the Functional Orthologs of Lipid Transfer Proteins (LTPs) for Developmental Regulation in Flowering Plants
Author(s) -
Caonguyen Sean L.,
Patel Swapneel J,
Vellanoweth Robert L
Publication year - 2010
Publication title -
the faseb journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.709
H-Index - 277
eISSN - 1530-6860
pISSN - 0892-6638
DOI - 10.1096/fasebj.24.1_supplement.896.3
Subject(s) - plant lipid transfer proteins , arabidopsis , biology , gene , function (biology) , transition (genetics) , lipoxygenase , signal transduction , microbiology and biotechnology , arabidopsis thaliana , genetics , botany , biochemistry , enzyme , mutant
During the floral transition in Arabidopsis, 13‐HOO‐FA, a possible lipid hydroperoxide precursor for signaling molecules, increases in leaves due to lipoxygenase activity. Results have shown the up‐regulation of two lipid transfer protein (LTP) genes, AtLTPf1 and AtLTPf2, at the floral transition. LTPs may act as signal carriers that transfer lipids, like oxylipins, between cells for developmental events. The purpose of this experiment is to locate orthologs of AtLTPf1 and AtLTPf2 from Arabidopsis (a dicot) in rice (a monocot) using bioinformatics coupled with expression pattern analyses. Our phylogenetic trees show LTP homologs, and we hypothesize that the most closely related genes, OsLTPf1 and OsLTPf2 from rice, mirror AtLTPf1 and AtLTPf2 expression, respectively. Through a comparison of various tissues at different stages of development in both plant species, our data suggests that AtLTPf1 and OsLTPf1 are orthologs. Further analysis of these LTPs may clarify their function and elucidate the signaling pathways involved in floral transition and developmental regulation. These LTPs may provide targets for genetic modification to alter plant development. Supported by NIH‐SCORE GM08101