2024-03-29T06:13:08Z
https://nagoya.repo.nii.ac.jp/oai
oai:nagoya.repo.nii.ac.jp:00019117
2023-01-16T03:54:56Z
643:666:667
Wound-induced expression of DEFECTIVE IN ANTHER DEHISCENCE1 and DAD1-like lipase genes is mediated by both CORONATINE INSENSITIVE1-dependent and independent pathways in Arabidopsis thaliana
Ruduś, Izabela
55890
Terai, Haruka
55891
Shimizu, Takafumi
55892
Kojima, Hisae
55893
Hattori, Kazuki
55894
Nishimori, Yuka
55895
Tsukagoshi, Hironaka
55896
Kamiya, Yuji
55897
Seo, Mitsunori
55898
Nakamura, Kenzo
55899
Kępczyński, Jan
55900
Ishiguro, Sumie
55901
Arabidopsis thaliana
Jasmonic acid
Phospholipase A1
Transcriptional regulation
Wounding
Wounding is a serious event in plants that may result from insect feeding and increase the risk of pathogen infection. Wounded plants produce high amounts of jasmonic acid (JA), which triggers the expression of insect and pathogen resistance genes. We focused on the transcriptional regulation of DEFECTIVE IN ANTHER DEHISCENCE1 and six of its homologs including DONGLE (DGL) in Arabidopsis, which encode lipases involved in JA biosynthesis. Plants constitutively expressing DAD1 accumulated a higher amount of JA than control plants after wounding, indicating that the expression of these lipase genes contributes to determining JA levels. We found that the expression of DAD1, DGL, and other DAD1-LIKE LIPASE (DALL) genes is induced upon wounding. Some DALLs were also expressed in unwounded leaves. Further experiments using JA-biosynthetic and JA-response mutants revealed that the wound induction of these genes is regulated by several distinct pathways. DAD1 and most of its homologs other than DALL4 were fully induced without relying on endogenous JA-Ile production and were only partly affected by JA deficiency, indicating that positive feedback by JA is not necessary for induction of these genes. However, DAD1 and DGL required CORONATINE INSENSITIVE1 (COI1) for their expression, suggesting that a molecule other than JA might act as a regulator of COI1. Wound induction of DALL1, DALL2, and DALL3 did not require COI1. This differential regulation of DAD1 and its homologs might explain their functions at different time points after wounding.
Epub 2014 Jan 16.
journal article
Springer
2014-06
application/pdf
Plant Cell Reports
6
33
849
860
http://dx.doi.org/10.1007/s00299-013-1561-8
http://hdl.handle.net/2237/21223
0721-7714
https://nagoya.repo.nii.ac.jp/record/19117/files/Rudus_2014_PlantCellRep.pdf
eng
https://doi.org/10.1007/s00299-013-1561-8
The original publication is available at www.springerlink.com.