期刊
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
卷 22, 期 4, 页码 -出版社
MDPI
DOI: 10.3390/ijms22041679
关键词
MAPK cascade; phosphorylation; rice; growth and development; biotic and abiotic stress; phytohormone signal transduction
资金
- National Natural Science Foundation of China [31821005, 31822042, 31871946]
- Natural Science Foundation of Hubei Province [2020CFA058]
MAPK cascades in plants play critical roles in growth, stress responses, and hormone signaling. In rice, the cascades control growth, stress resistance, and signaling functions. Future research on the molecular mechanisms and functions of rice MAPK cascades requires attention to specific concerns.
The mitogen-activated protein kinase (MAPK) cascades have been validated playing critical roles in diverse aspects of plant biology, from growth and developmental regulation, biotic and abiotic stress responses, to phytohormone signal transduction or responses. A classical MAPK cascade consists of a MAPK kinase kinase (MAPKKK), a MAPK kinase (MAPKK), and a MAPK. From the 75 MAPKKKs, eight MAPKKs, and 15 MAPKs of rice, a number of them have been functionally deciphered. Here, we update recent advances in knowledge of the roles of rice MAPK cascades, including their components and complicated action modes, their diversified functions controlling rice growth and developmental responses, coordinating resistance to biotic and abiotic stress, and conducting phytohormone signal transduction. Moreover, we summarize several complete MAPK cascades that harbor OsMAPKKK-OsMAPKK-OsMAPK, their interaction with different upstream components and their phosphorylation of diverse downstream substrates to fulfill their multiple roles. Furthermore, we state a comparison of networks of rice MAPK cascades from signal transduction crosstalk to the precise selection of downstream substrates. Additionally, we discuss putative concerns for elucidating the underlying molecular mechanisms and molecular functions of rice MAPK cascades in the future.
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