Coordinated Regulation of Arbuscular Mycorrhizal Fungi and Soybean MAPK Pathway Genes Improved Mycorrhizal Soybean Drought Tolerance

• DOI: 10.1094/mpmi-09-14-0251-r
• Publication Date: 2014-11-13T00:15:15Z
• Authors: Zhilei Liu; Yuanjing Li; Lina Ma; Haichao Wei; Jianfeng Zhang; Xingyuan He; Chunjie Tian
• Keywords: Rhizophagus irregularis; Drought Tolerance

Mitogen-activated protein kinase (MAPK) cascades play important roles in the stress response both plants and microorganisms. The mycorrhizal symbiosis established between arbuscular fungi (AMF) can enhance plant drought tolerance, which might be closely related to fungal MAPK molecular dialogue soybean cascades. To verify above hypothesis, germinal Glomus intraradices (syn. Rhizophagus irregularis) spores potted experiments were conducted. results showed that AMF GiMAPKs with high homology MAPKs from Saccharomyces cerevisiae had different gene expression patterns under conditions (nitrogen starvation, abscisic acid treatment, drought). Drought upregulated levels of transcripts roots, indicating possibility a two symbiotic sides suggesting they cooperate regulate drought-stress response. Meanwhile, changes hydrogen peroxide, soluble sugar, proline as well accelerated exchange carbon nitrogen symbionts contributable adaptation host plants. Thus, it preliminarily inferred interactions signals on sides, fungus plant, and, thus, improve resistance stress.