Journal
FRONTIERS IN PLANT SCIENCE
Volume 6, Issue -, Pages -Publisher
FRONTIERS MEDIA SA
DOI: 10.3389/fpls.2015.00387
Keywords
plant defense signaling; lipid signaling; salicylic acid; phosphatidic acid; phosphatidylinositol 4-phosphate; phospholipase D; phospholipase C; biphasic generation of ROS
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Funding
- Ministry of Education of the People's Republic of China
- National Science Foundation [10S-1146589]
- Direct For Biological Sciences
- Division Of Integrative Organismal Systems [1146589] Funding Source: National Science Foundation
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Plants have evolved effective defense strategies to protect themselves from various pathogens. Salicylic acid (SA) is an essential signaling molecule that mediates pathogen-triggered signals perceived by different immune receptors to induce downstream defense responses. While many proteins play essential roles in regulating SA signaling, increasing evidence also supports important roles for signaling phospholipids in this process. In this review, we collate the experimental evidence in support of the regulatory roles of two phospholipids, phosphatidic acid (PA), and phosphatidylinositol 4-phosphate (PI4P), and their metabolizing enzymes in plant defense, and examine the possible mechanistic interaction between phospholipid signaling and SA-dependent immunity with a particular focus on the immunity-stimulated biphasic PA production that is reminiscent of and perhaps mechanistically connected to the biphasic reactive oxygen species (ROS) generation and SA accumulation during defense activation.
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