Down-Regulation of Strigolactone Biosynthesis Gene D17 Alters the VOC Content and Increases Sogatella furcifera Infectivity in Rice

Shanshan Li, Hualiang He, Lin Qiu, Qiao Gao, Youzhi Li and Wenbing Ding ()
Additional contact information
Shanshan Li: College of Plant Protection, Hunan Agricultural University, Changsha 410128, China
Hualiang He: College of Plant Protection, Hunan Agricultural University, Changsha 410128, China
Lin Qiu: College of Plant Protection, Hunan Agricultural University, Changsha 410128, China
Qiao Gao: College of Plant Protection, Hunan Agricultural University, Changsha 410128, China
Youzhi Li: College of Plant Protection, Hunan Agricultural University, Changsha 410128, China
Wenbing Ding: College of Plant Protection, Hunan Agricultural University, Changsha 410128, China

Agriculture, 2023, vol. 13, issue 4, 1-12

Abstract: DWARF17 ( D17 / HTD1 ) is a well-defined rice strigolactone (SL) biosynthesis gene that influences rice tiller development and the production of rice. To investigate whether SLs play a role in the regulation of rice’s defense against the white-backed planthopper (WBPH, Sogatella furcifera ), we compared a SL-biosynthetic defective mutant ( d17 ) with WT rice plants. Our olfactory bioassay results revealed that WBPHs are attracted to d17 plants, which may be attributed to changes in rice volatile substances. Hexanal, a volatile substance, was significantly reduced in the d17 plants, and it was demonstrated that it repelled WBPHs at a concentration of 100 μL/L. Compared to the WT plants, WBPH female adults preferred to oviposit on d17 plants, where the egg hatching rate was higher. The transcript level analysis of defense-associated genes in the JA and SA pathways showed that the expression of OsJAmyb, OsJAZ8 , OsPR1a and OsWRKY62 were significantly reduced in d17 plants compared to WT plants following WBPH infection. These findings suggest that silencing the strigolactone biosynthesis gene D17 weakens defenses against S. furcifera in rice.

Keywords: DWARF17; D17; strigolactones; Sogatella furcifera; rice defense (search for similar items in EconPapers)
JEL-codes: Q1 Q10 Q11 Q12 Q13 Q14 Q15 Q16 Q17 Q18 (search for similar items in EconPapers)
Date: 2023
References: View references in EconPapers View complete reference list from CitEc
Citations:

Downloads: (external link)
https://www.mdpi.com/2077-0472/13/4/842/pdf (application/pdf)
https://www.mdpi.com/2077-0472/13/4/842/ (text/html)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:gam:jagris:v:13:y:2023:i:4:p:842-:d:1119207

Access Statistics for this article

Agriculture is currently edited by Ms. Leda Xuan

More articles in Agriculture from MDPI
Bibliographic data for series maintained by MDPI Indexing Manager ().