Red/Far Red Light Controls Arbuscular Mycorrhizal Colonization via Jasmonic Acid and Strigolactone Signaling.
Red/Far Red Light Controls Arbuscular Mycorrhizal Colonization via Jasmonic Acid and Strigolactone Signaling.
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DOI：
10.1093/pcp/pcv135
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发表时间：
2015-11
影响因子：
4.9
通讯作者：
Maki Nagata;Naoya Yamamoto;Tamaki Shigeyama;Yohei Terasawa;T. Anai;T. Sakai;S. Inada;S. Arima;M. Hashiguchi;R. Akashi;Hideyuki Nakayama;D. Ueno;A. Hirsch;A. Suzuki
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文献类型：
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作者：
Maki Nagata;Naoya Yamamoto;Tamaki Shigeyama;Yohei Terasawa;T. Anai;T. Sakai;S. Inada;S. Arima;M. Hashiguchi;R. Akashi;Hideyuki Nakayama;D. Ueno;A. Hirsch;A. Suzuki
豆科植物与根瘤菌之间建立固氮共生关系不仅需要充足的光合作用，还需要对红光与远红光的比值(R/FR)进行感知。在这里，我们表明，R/FR光敏感也通过茉莉酸(JA)和三丁内酯(SL)信号对豆科和非豆科植物的丛枝菌根(AM)共生产生积极影响。与低R/FR光照植株相比，AM在高R/FR光照番茄和莲花中的定植水平显著增加。在高R/FR条件下，JA相关基因的转录水平也升高。高R/FR光生根分泌物中AM真菌分枝诱导剂(+)-5-脱氧雌酚含量高于低R/FR光生根分泌物。综上所述，高R/FR光不仅改变了JA和SL的合成水平，而且改变了释放到根际的植物根分泌物的组成，从而增强了AM共生。
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.