Red/Far Red Light Controls Arbuscular Mycorrhizal Colonization via Jasmonic Acid and Strigolactone Signaling

Maki Nagata, Naoya Yamamoto, Tamaki Shigeyama, Yohei Terasawa, Toyoaki Anai, Tatsuya Sakai, Sayaka Inada, Susumu Arima, Masatsugu Hashiguchi, Ryo Akashi, Hideyuki Nakayama, Daisuke Ueno, Ann M. Hirsch, Akihiro Suzuki

Research output: Contribution to journalArticlepeer-review

Abstract

Establishment of a nitrogen-fixing symbiosis between legumes and rhizobia not only requires sufficient photosynthate, but also the sensing of the ratio of red to far red (R/FR) light. Here, we show that R/FR light sensing also positively influences the arbuscular mycorrhizal (AM) symbiosis of a legume and a non-legume through jasmonic acid (JA) and strigolactone (SL) signaling. The level of AM colonization in high R/FR light-grown tomato and Lotus japonicus significantly increased compared with that determined for low R/FR light-grown plants. Transcripts for JA-related genes were also elevated under high R/FR conditions. The root exudates derived from high R/FR light-grown plants contained more (+)-5-deoxystrigol, an AM-fungal hyphal branching inducer, than those from low R/FR light-grown plants. In summary, high R/FR light changes not only the levels of JA and SL synthesis, but also the composition of plant root exudates released into the rhizosphere, in this way augmenting the AM symbiosis.

Original languageEnglish
Pages (from-to)2100-2109
Number of pages10
JournalPlant and Cell Physiology
Volume56
Issue number11
DOIs
Publication statusPublished - Nov 1 2015
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Physiology
  • Plant Science
  • Cell Biology

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