Abstract
Rice is one of the most important food crops worldwide, as well as the model plant in molecular studies on the cereals group. Many different biotic and abiotic agents often limit rice production and threaten food security. Understanding the molecular mechanism, by which the rice plant reacts and resists these constraints, is the key to improving rice production to meet the demand of an increasing population. The phytohormone jasmonic acid (JA) and related compounds, collectively called jasmonates, are key regulators in plant growth and development. They are also one of the central players in plant immunity against biotic attacks and adaptation to unfavorable environmental conditions. Here, we review the most recent knowledge about jasmonates signaling in the rice crop model. We highlight the functions of jasmonates signaling in many adaptive responses, and also in rice growth and development processes. We also draw special attention to different signaling modules that are controlled by jasmonates in rice.
Highlights
Jasmonic acid and its related derivatives are polyunsaturated fatty acid-derived phytohormones occurring ubiquitously in land plants
Significant progress has been achieved in our understanding of jasmonate signaling and its actions in rice
The functions of jasmonic acid (JA) in rice are versatile. It is involved in every aspect of rice plant development from seed-to-seed, as well as in mediating responses to abiotic and biotic stresses
Summary
Jasmonic acid and its related derivatives are polyunsaturated fatty acid-derived phytohormones occurring ubiquitously in land plants. These lipid-based signal molecules are involved in several aspects of plant growth, adaptation to various environmental constraints, and in plant defense against biotic attacks [1,2,3,4,5,6,7,8]. F-box protein receptors in rice suggests that there might be more possibilities of distinguishing different forms of jasmonates other than JA-Ile at the perception level [11]. The higher number of receptors and repressor proteins found in rice suggest a higher number of possible COI-JAZ interactions, which may lead to the fine-tuning of JA perception and signaling. We discuss the recent significant findings of jasmonates signaling in rice
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