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Abstract <p>The localization of different components of symbiotic interface were studied in allelic mutants of two key symbiotic pea genes, <i>Sym33</i> and <i>Sym40</i>. Allelic mutants were characterized by similar distribution of most of the analyzed components. However, some specific allelic differences were identified. Among allelic mutants, the <i>sym33-2</i> mutant exhibited the highest level of de-esterified homogalacturonan epitope labeled with the LM19 antibody, which coincided with the strongest defense responses in this mutant. Differences were also revealed in the distribution of rhamnogalacturonan branched galactan side chains (labeled with LM26) and fucosylated xyloglucan (labeled with CCRC-M1) in the nodules of the <i>sym40-1</i> and <i>sym40-2</i> mutants. The biological significance of these differences is not yet clear, since the <i>sym40-2</i> mutation has not yet been identified.</p>

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Allelic Specificity of the Localization of Symbiotic Interface Components in Pea (Pisum sativum L.) sym33 and sym40 Mutants

  • 期刊论文

  • 发表日期：

    2026年8月2日

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  • E. A. Kirichek,
  • A. V. Tsyganova,
  • V. E. Tsyganov

摘要

Abstract

The localization of different components of symbiotic interface were studied in allelic mutants of two key symbiotic pea genes, Sym33 and Sym40. Allelic mutants were characterized by similar distribution of most of the analyzed components. However, some specific allelic differences were identified. Among allelic mutants, the sym33-2 mutant exhibited the highest level of de-esterified homogalacturonan epitope labeled with the LM19 antibody, which coincided with the strongest defense responses in this mutant. Differences were also revealed in the distribution of rhamnogalacturonan branched galactan side chains (labeled with LM26) and fucosylated xyloglucan (labeled with CCRC-M1) in the nodules of the sym40-1 and sym40-2 mutants. The biological significance of these differences is not yet clear, since the sym40-2 mutation has not yet been identified.