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Differential expression of rice lipid transfer protein gene(LTP) classes in response to abscisic acid, salt, salicylic acid, and the fungal pathogenMagnaporthe grisea

한국식물학회지 2006년 49권 5호 p.371 ~ 371
 ( Kim Tae-Hyun ) - Inha University Department of Biological Sciences

 ( Kim Moon-Chul ) - Inha University Department of Biological Sciences
 ( Park Jong-Ho ) - Inha University Department of Biological Sciences
 ( Han Seong-Sook ) - National Institute of Agricultural Science and Technology Plant Pathology Division
 ( Kim Byung-Ryun ) - Chungnam Agricultural Research and Extension Services Biological Environment Division
 ( Moon Byoung-Yong ) - Inje University Department of Biotechnology and Biomedical Science
 ( Suh Mi-Chung ) - Chonnam National University Department of Plant Biotechnology
 ( Cho Sung-Ho ) - Inha University Department of Biological Sciences

Abstract


Rice lipid transfer protein(LTP) genes belong to a complex multigene family and are differentially regulated. The organ specificity of expression for the different classes of riceLTP gene Subfamily I was investigated here.LTPC1 (Class I) was highly expressed in flowers and stems, whileLTPC2 (Class II) showed higher expression in leaves and stems.LTPC3 (Class III) showed higher expression in stems, whereas corresponding mRNA was barely detected in leaves. Treatment of 3-wk-old plants with ABA induced the expression ofLTPC1 andLTPC3 after 1 d. Expression of all threeLTP isoforms was induced in response to salicylic acid. Because some of these genes are reportedly induced by pathogens, we also investigated whether they might be responsive to infection byMagnaporthe grisea. Transcripts ofLTPC1 started to accumulate in the leaves at 8 h after incompatible inoculation, reaching a maximum level at 48 h. In contrast, the response was much slower and weaker after compatible inoculation.

키워드

lipid transfer protein; Magnaporthe grisea; pathogen; rice; stress
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