首页|A signaling cascade mediating fruit trait development via phosphorylation-modulated nuclear accumulation of JAZ repressor

A signaling cascade mediating fruit trait development via phosphorylation-modulated nuclear accumulation of JAZ repressor

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It is generally accepted that jasmonate-ZIM do-main(JAZ)repressors act to mediate jasmonate(JA)signaling via CORONATINE-INSENSITIVE1(COI1)-mediated degradation.Here,we report a cryptic signaling cascade where a JAZ repressor,FvJAZ12,mediates multiple signaling inputs via phosphorylation-modulated subcellular trans-location rather than the COI1-mediated degradation mechanism in strawberry(Fragaria vesca).FvJAZ12 acts to regulate flavor metabolism and defense response,and was found to be the target of FvMPK6,a mitogen-activated protein kinase that is capable of responding to multiple signal stimuli.FvMPK6 phosphorylates FvJAZ12 at the amino acid residues S179 and T183 adjacent to the PY residues,thereby attenuating its nuclear accumulation and relieving its repression for FvMYC2,which acts to control the expression of lipoxygenase 3(FvLOX3),an important gene in-volved in JA biosynthesis and a diverse array of cellular metabolisms.Our data reveal a previously unreported mechanism for JA signaling and deci-pher a signaling cascade that links multiple signaling inputs with fruit trait development.

defense responseJAZ repressorphosphorylationstrawberrysubcellular translocation

Wei Wang、Jinyao Ouyang、Yating Li、Changsheng Zhai、Bing He、Huahan Si、Kunsong Chen、Jocelyn K.C.Rose、Wensuo Jia

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College of Horticulture,China Agricultural University,Beijing 100193,China

College of Agriculture and Biotechnology,Zhejiang University,Zijingang Campus,Hangzhou 310058,China

Plant Biology Section,School of Integrative Plant Science,Cornell University,Ithaca14853,NY,USA

Institute of Horticulture Crops,Xinjiang Academy of Agricultural Sciences,Urumqi 830000,China

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National Key Research and Development ProgramTianchi Talent Program(2023)Beijing Natural Science FoundationNational Key Research and Development ProgramConstruction of Beijing Science and Technology Innovation and Service Capacity in Top Subjects

2022YFD210010262320192019YFD1000200CEFFPXM2019_014207_000032

2024

10.1111/jipb.13654

植物学报(英文版)
中国植物学会

植物学报(英文版)

CSTPCD
影响因子：0.921
ISSN：1672-9072
年,卷(期)：2024.66(6)
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