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Title of Journal: Plant Mol Biol Rep

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Abbravation: Plant Molecular Biology Reporter

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Springer US

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DOI

10.1016/0920-9964(93)90567-3

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1572-9818

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Expression Analysis of Fatty Acid Biosynthetic Pat

Authors: Fahimeh Alizadeh Siti Nor Akmar Abdullah Pei Pei Chong Ahmad Bin Selamat
Publish Date: 2013/05/25
Volume: 32, Issue: 1, Pages: 70-81
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Abstract

The fatty acid FA signaling pathway is emerging as an important mechanism in plant responses during interactions with microbial organisms For a comprehensive evaluation of key FA biosynthetic pathway genes during interactions of oil palm Elaeis guineensis Jacq with the pathogenic Ganoderma boninense and symbiotic Trichoderma harzianum fungal organisms a lanebased array analysis of gene expression in artificially inoculated oil palm seedlings was performed The results obtained demonstrated that acetylCoA carboxylase ACC βketoacylACP synthases KAS II and III palmitoylACP thioesterase PTE oleoylACP thioesterase OTE and glycerol3phosphate acyltransferase ACT showed identical responses in root and leaf tissues for the same fungi The expression of these genes was upregulated in both root and leaf tissues at 21 days postinoculation dpi during interaction of oil palm with G boninense Thereafter production of physical symptoms occurred at 42 and 63 dpi concomitantly with suppression of expression of these genes An increase in the expression level of these genes was observed in both tissues at 3–63 dpi which correlated with the colonization of roots and promotion of plant growth by T harzianum These data suggest that FA biosynthetic pathway genes are involved in the defense response of oil palm to infection Identical plant responses by FA biosynthetic pathway genes may lead to enhanced resistance against G boninense and could be a useful marker to contribute towards early detection of infection The distinct expression profile during symbiotic interaction demonstrated its role in plant resistance mechanisms and growth promotion by T harzianum

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