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A cDNA Encoding Polygalacturonase-inhibiting Protein Induced in Citrus Leaves by Polygalacturonase of Alternaria citri

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A cDNA encoding the polygalacturonase-inhibiting protein gene (RlemPGIPl) was identified from rough lemon (Citrus jambhiri Lush.). The deduced amino acid sequence is 46-75% identical to other plant PGIPs. The transcripts of the PGIP gene were weakly but constitutively expressed in leaves and increased in leaves within 30 min after wounding or inoculation with nonpathogenic Alternaria alternata or A. citri. However, expression of the PGIP and chalcone synthase genes did not increase after inoculation with an endopolygalacturonase (endoPG)-disrupted mutant of A. citri. These results indicate that endoPG may act as an elicitor for induction of these genes in citrus, most likely caused by PGIP interactions.

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Authors and Affiliations

  1. Laboratory of Plant Pathology, Department of Life Sciences, Faculty of Agriculture, Kagawa University, Miki, Kagawa 761–0795, Japan, , , , , , JP

    Yukie GOTOH, Takami UTSUMI, Hiroyuki YAMAMOTO & Kazuya AKIMITSU

  2. United Graduate School of Agriculture, Kagawa University, Miki, Kagawa 761–0795, Japan, , , , , , JP

    Sarunya NALUMPANG, Atsunori ISSHIKI & Kenji GOMI

Authors
  1. Yukie GOTOH
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  2. Sarunya NALUMPANG
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  3. Atsunori ISSHIKI
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  4. Takami UTSUMI
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  5. Kenji GOMI
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  6. Hiroyuki YAMAMOTO
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  7. Kazuya AKIMITSU
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Received 4 June 2001/ Accepted in revised form 31 August 2001

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GOTOH, Y., NALUMPANG, S., ISSHIKI, A. et al. A cDNA Encoding Polygalacturonase-inhibiting Protein Induced in Citrus Leaves by Polygalacturonase of Alternaria citri . J Gen Plant Pathol 68, 57–61 (2002). https://doi.org/10.1007/PL00013054

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  • DOI: https://doi.org/10.1007/PL00013054

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