Trade-offs between the accumulation of cuticular wax and jasmonic acid-mediated herbivory resistance in maize

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外文摘要：Plants have evolved complex physical and chemical defense systems that allow them to withstand herbivory infestation.Composed of a complex mixture of very-long-chain fatty acids(VLCFAs)and their derivatives,cuticular wax constitutes the first physical line of defense against herbivores.Here,we report the function of Glossy 8(ZmGL8),which encodes a 3-ketoacyl reductase belonging to the fatty acid elongase complex,in orchestrating wax production and jasmonic acid(JA)-mediated defenses against herbivores in maize(Zea mays).The mutation of GL8 enhanced chemical defenses by activating the JA-dependent pathway.We observed a trade-off between wax accumulation and JA levels across maize glossy mutants and 24 globally collected maize inbred lines.In addition,we demonstrated that mutants defective in cu-ticular wax biosynthesis in Arabidopsis thaliana and maize exhibit enhanced chemical defenses.Comprehensive transcriptomic and lipidomic anal-yses indicated that the gl8 mutant confers chemical resistance to herbivores by remodeling VLCFA-related lipid metabolism and subsequent JA bio-synthesis and signaling.These results suggest that VLCFA-related lipid metabolism has a critical role in regulating the trade-offs between cuticular wax and JA-mediated chemical defenses.

外文关键词：

cuticular waxfall armywormherbivore resistancejasmonic acidmaizeplant-herbivore interactions

作者：

Jiong Liu、Lu Li、Zhilong Xiong、Christelle A.M.Robert、Baozhu Li、Shan He、Wenjie Chen、Jiasheng Bi、Guanqing Zhai、Siyi Guo、Hui Zhang、Jieping Li、Shutang Zhou、Xi Zhang、Chun-Peng Song

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作者单位：

School of Life Sciences,Henan University,Kaifeng 475004,China

State Key Laboratory of Crop Stress Adaptation and Improvement,Henan University,Kaifeng 475004,China

State Key Laboratory of Cotton Bio-Breeding and Integrated Utilization,Henan University,Kaifeng 475004,China

Sanya Institute of Henan University,Sanya 572025,China

Institute of Plant Sciences,University of Bern,Bern 3013,Switzerland

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基金：

National science Foundation of China to Chun-Peng SongNational Natural Science Foundation of ChinaHainan Province Joint Cultivation ProjectProject of Sanya Yazhou Bay Science and Technology CityProgram for Innovative Research Team(in Science and Technology)in the University of Henan ProvinceProgram of Introducing Talents of Discipline to Universities 111 ProjectHenan Province Key Research and Development Project

项目编号：

U21A20206321021872021JJLH0014SCKJ-JYRC-2022-7821IRTSTHN019number D16014221111112200

出版年：

2024

DOI：

10.1111/jipb.13586

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(1)

参考文献量80