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植物学报（英文版）
植物学报（英文版）

刘春明

月刊

1672-9072

jipb@ibcas.ac.cn

010-62836133，010-62836563

100093

北京香山南辛村20号中科院植物所内

植物学报（英文版）/Journal Journal of Integrative Plant BiologyCSCDCSTPCD北大核心SCI
查看更多>>本学报是植物学综合性学术期刊。国外发行与交换达40多个国家和地区。国际标准A4大16开铜版纸印刷。本学报力争全面反映我国植物科学的最新研究成果，关注国际热点、新的学科生长点、前沿研究课题，重视报道重要的应用基础研究。主要栏目有植物生理生化、植物遗传学和分子生物学、植物生殖生物学、结构植物学、植物化学与资源植物学、植物系统与进化、植物生态学、古植物学的原始研究论文、综述和快讯。
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    Antagonistic MADS-box transcription factors SEEDSTICK and SEPALLATA3 form a transcriptional regulatory network that regulates seed oil accumulation

    Shuangcheng HeYuanchang MinZijin LiuFang Zhi...
    121-142页
    查看更多>>摘要：Transcriptional regulation is essential for bal-ancing multiple metabolic pathways that influ-ence oil accumulation in seeds.Thus far,the transcriptional regulatory mechanisms that govern seed oil accumulation remain largely un-known.Here,we identified the transcriptional regulatory network composed of MADS-box transcription factors SEEDSTICK(STK)and SEPALLATA3(SEP3),which bridges several key genes to regulate oil accumulation in seeds.We found that STK,highly expressed in the devel-oping embryo,positively regulates seed oil ac-cumulation in Arabidopsis(Arabidopsis thaliana).Furthermore,we discovered that SEP3 physically interacts with STK in vivo and in vitro.Seed oil content is increased by the SEP3 mutation,while it is decreased by SEP3 overexpression.The chromatin immunoprecipitation,electrophoretic mobility shift assay,and transient dual-luciferase reporter assays showed that STK positively reg-ulates seed oil accumulation by directly re-pressing the expression of MYB5,SEP3,and SEED FATTY ACID REDUCER 4(SFAR4).More-over,genetic and molecular analyses demon-strated that STK and SEP3 antagonistically reg-ulate seed oil production and that SEP3 weakens the binding ability of STK to MYB5,SEP3,and SFAR4.Additionally,we demonstrated that TRANSPARENT TESTA 8(TT8)and ACYL-ACYL CARRIER PROTEIN DESATURASE 3(AAD3)are direct targets of MYB5 during seed oil accumu-lation in Arabidopsis.Together,our findings provide the transcriptional regulatory network antagonistically orchestrated by STK and SEP3,which fine tunes oil accumulation in seeds.
      原文链接:
    • 万方数据
    • 维普

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

    Jiong LiuLu LiZhilong XiongChristelle A.M.Robert...
    143-159页
    查看更多>>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.
      原文链接:
    • 万方数据
    • 维普