Discriminative Phytoalexin Accumulation in Lotus japonicus against Symbiotic and Non-Symbiotic Microorganisms and Related Chemical Signals

Motomu MASAI; Miho ARAKAWA; Koichi IWAYA; Toshio AOKI; Tomomi NAKAGAWA; Shin-ichi AYABE; Hiroshi UCHIYAMA

doi:10.1271/bbb.130209

Environmental Science Note

Discriminative Phytoalexin Accumulation in Lotus japonicus against Symbiotic and Non-Symbiotic Microorganisms and Related Chemical Signals

Motomu MASAI, Miho ARAKAWA, Koichi IWAYA, Toshio AOKI, Tomomi NAKAGAWA, Shin-ichi AYABE, Hiroshi UCHIYAMA

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Keywords: Lotus japonicus, microbe-associated molecular patterns, phytoalexin, plant immunity, rhizobia

JOURNAL FREE ACCESS

2013 Volume 77 Issue 8 Pages 1773-1775

DOI https://doi.org/10.1271/bbb.130209

View "Advance Publication" version (August 7, 2013).

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Abstract

The phytoalexin response of Lotus japonicus seedlings to selected microbes and chemical signals was analyzed. The symbiotic rhizobium induced vestitol production weakly, while non-symbiotic rhizobia and potential pathogens led to increases in its accumulation. Whereas chitin-related molecules were ineffective, a flagellin-derived peptide not of symbiont origin induced phytoalexin production, indicating discriminative antibiotic production by the plant host.

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