Multiple roles of plant volatiles in jasmonate-induced defense response in rice

Plant Signaling & Behavior
Keiichiro TanakaKenji Gomi

Abstract

The plant hormone jasmonic acid (JA) has a crucial role in defense responses against pathogens in rice. We recently reported that some volatile compounds accumulate in response to JA treatment, and that the monoterpene linalool plays an important role in JA-induced resistance to rice bacterial blight caused by Xanthomonas oryzae pv oryzae (Xoo) in rice. One of the JA-responsive volatiles, (E,E)-2,4-heptadienal, has both antibacterial and antifungal activity against Xoo, and the rice fungal pathogen Magnaporthe oryzae. In addition, (E,E)-2,4-heptadienal was toxic to rice plants. These phenomena were not observed when linalool was treated. These results indicate that accumulation of the (E,E)-2,4-heptadienal in response to JA is a double-edged sword, but it is essential for survival against pathogen attacks in rice.

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Citations

Feb 2, 2019·Journal of the Science of Food and Agriculture·Yiru ZhangHongying Li
Nov 14, 2019·Molecules : a Journal of Synthetic Chemistry and Natural Product Chemistry·Hayoung KimYun Gyong Ahn
Sep 29, 2017·Fungal biology and biotechnology·Samantha LeeJoan W Bennett
Mar 30, 2021·Plant Science : an International Journal of Experimental Plant Biology·Go SuzukiKenji Gomi

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