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| 1 | Induction of jasmonic acid biosynthetic genes inhibits Arabidopsis growth in response to low boron显示文摘The essential micronutrient boron(B) has key roles in cell wall integrity and B deficiency inhibits plant growth. The role of jasmonic acid(JA) in plant growth inhibition under B deficiency remains unclear. Here,we report that low B elevates JA biosynthesis in Arabidopsis thaliana by inducing the expression of JA biosynthesis genes. Treatment with JA inhibited plant growth and, a JA biosynthesis inhibitor enhanced plant growth, indicating that the JA induced by B deficiency affects plant growth. Furthermore,examination of the JA signaling mutants jasmonate resistant1, coronatine insensitive1-2, and myc2 showed that JA signaling negatively regulates plant growth under B deficiency. We identified a low-B responsive transcription factor, ERF018, and used yeast one-hybrid assays and transient activation assays in Nicotiana benthamiana leaf cells to demonstrate that ERF018 activates the expression of JA biosynthesis genes. ERF018 overexpression(OE)lines displayed stunted growth and up-regulation of JA biosynthesis genes under normal B conditions,compared to Col-0 and the difference between ERF018 OE lines and Col-0 diminished under low B.These results suggest that ERF018 enhances JA biosynthesis and thus negatively regulates plant growth. Taken together, our results highlight the importance of JA in the effect of low B on plant growth. | Yupu Huang Sheliang Wang Chuang Wang Guangda Ding Hongmei Cai Lei Shi Fangsen Xu | 2021 | Journal of Integrative Plant Biology2021，63，5： | 5 |
| 2 | Methyl jasmonate mediates melatonin-induced cold tolerance of grafted watermelon plants显示文摘Root–shoot communication has a critical role in plant adaptation to environmental stress.Grafting is widely applied to enhance the abiotic stress tolerance of many horticultural crop species;however,the signal transduction mechanism involved in this tolerance remains unknown.Here,we show that pumpkin-or figleaf gourd rootstock-enhanced cold tolerance of watermelon shoots is accompanied by increases in the accumulation of melatonin,methyl jasmonate(MeJA),and hydrogen peroxide(H_(2)O_(2)).Increased melatonin levels in leaves were associated with both increased melatonin in rootstocks and MeJA-induced melatonin biosynthesis in leaves of plants under cold stress.Exogenous melatonin increased the accumulation of MeJA and H_(2)O_(2) and enhanced cold tolerance,while inhibition of melatonin accumulation attenuated rootstock-induced MeJA and H_(2)O_(2) accumulation and cold tolerance.MeJA application induced H_(2)O_(2) accumulation and cold tolerance,but inhibition of JA biosynthesis abolished rootstock-or melatonin-induced H_(2)O_(2) accumulation and cold tolerance.Additionally,inhibition of H_(2)O_(2) production attenuated MeJA-induced tolerance to cold stress.Taken together,our results suggest that melatonin is involved in grafting-induced cold tolerance by inducing the accumulation of MeJA and H_(2)O_(2).MeJA subsequently increases melatonin accumulation,forming a self-amplifying feedback loop that leads to increased H_(2)O_(2) accumulation and cold tolerance.This study reveals a novel regulatory mechanism of rootstock-induced cold tolerance. | Hao Li Yanliang Guo Zhixiang Lan Kai Xu Jingjing Chang Golam Jalal Ahammed Jianxiang Ma Chunhua Wei Xian Zhang | 2021 | Horticulture Research2021，8，1： | 5 |
| 3 | Importers Drive Leaf-to-Leaf Jasmonic Acid Transmission in Wound-Induced Systemic Immunity显示文摘The transmission of mobile wound signals along the phloem pathway is essential to the activation of wound-induced systemic response/resistance,which requires an upsurge of jasmonic acid(JA)in the distal undamaged leaves.Among these mobile signals,the electrical signal mediated by the glutamate-dependent activation of several clade three GLUTAMATE RECEPTOR-LIKE(GLR3)proteins is involved in the stimulation of JA production in distal leaves.However,whether JA acts as a mobile wound signal and,if so,how it is transmitted and interacts with the electrical signal remain unclear.Here,we show that JA was translocated from the local to distal leaves in Arabidopsis,and this process was predominantly regulated by two phloem-expressed and plasma membrane-localized jasmonate transporters,AtJAT3 and AtJAT4.In addition to the cooperation between AtJAT3/4 and GLR3.3 in the regulation of long-distance JA translocation,our findings indicate that importer-mediated cell-cell JA transport is important for driving the loading and translocation of JA in the phloem pathway in a self-propagating manner. | Mengya Li Feifei Wang Shuangzhang Li Guanghui Yu Lijian Wang Qingqing Li Xiangyu Zhu Zhen Li Lixing Yuan Pei Liu | 2020 | Molecular Plant2020，13，10： | 3 |
| 4 | 伤口信号调节植物再生的研究进展显示文摘植物强大的再生能力使其在复杂的自然环境中得以生存。植物再生是植物对受损结构自我修复或替代的过程。例如,离体的枝条或叶片掉落在湿润的土壤表面后,能够在伤口处快速再生不定根,从而顽强地生存下去。伤口信号是启动植物再生的第一项生物学事件。近年来,有关伤口信号及其在植物再生过程中信号转导的研究取得了重要进展。本文综述了伤口信号参与植物再生的分子机制,并对未来的研究方向进行了展望。 | 温绍廷 顾泽玮 喻杰 张贵芳 | 2020 | 植物生理学报2020，56，8： | 3 |
| 5 | Metabolism, signaling, and transport of jasmonates显示文摘Biosynthesis/metabolism,perception/signaling,and transport are three essential aspects of the actions of phytohormones.Jasmonates(JAs),including jasmonic acid(JA)and related oxylipins,are implicated in the regulation of a range of ecological interactions,as well as developmental programs to integrate these interactions.Jasmonoyl-isoleucine(JA-Ile)is the most bioactive JAs,and perception of JA-Ile by its coreceptor,the Skp1-Cullin1-F-box-type(SCF)protein ubiquitin ligase complex SCF^(COI1)-JAZ,in the nucleus derepresses the transcriptional repression of target genes.The biosynthesis and metabolism of JAs occur in the plastid,peroxisome,cytosol,endoplasmic reticulum,and vacuole,whereas sensing of JA-Ile levels occurs in the nucleus.It is increasingly apparent that a number of transporters,particularly members of the jasmonates transporter(JAT)family,located at endomembranes as well as the plasma membrane,constitute a network for modulating and coordinating the metabolic flux and signaling of JAs.In this review,we discuss recent advances in the metabolism,signaling,and especially the transport of JAs,focusing on intracellular compartmentation of these processes.The roles of transporter-mediated cell-cell transport in driving long-distance transport and signaling of JAs are also discussed. | Mengya Li Guanghui Yu Congli Cao Pei Liu | 2021 | Plant Communications2021，2，5： | 2 |
| 6 | 茉莉酸在植物抗逆性中的研究进展显示文摘茉莉酸(jasmonic acid,JA)是一种植物内源合成的脂类激素,在植物响应胁迫的调控中发挥着重要作用。本文概括了JA的生物合成与代谢途径及其调控机制;总结了JA信号的传导通路;系统归纳了JA在植物响应生物和非生物胁迫应答中的作用机制和调控网络,重点关注了最新的研究进展。此外,本文梳理了JA与其他植物激素在植物抗逆性调节过程中的信号交流。最后讨论了JA信号通路介导的植物抗逆性研究中亟待解决的问题,并展望了新的分子生物学技术在调控JA信号通路增强作物抗性中的应用前景,以期为植物的抗逆性研究和改良提供参考。 | 张乐欢 邹昌玉 朱天翔 杜美霞 邹修平 何永睿 陈善春 龙琴 | 2024 | 生物工程学报2024，40，1： | 0 |
| 7 | 安溪铁观音香气如兰似桂的化学机理分析显示文摘安溪铁观音以其独特的“观音韵”闻名遐迩,闻香“如兰似桂”。本文在概述兰花香气成分、桂花香气成分和木兰科植物玉兰、白兰等的香气成分的基础上,将铁观音的独特香气品质与这些花香成分进行对比分析。总结花香形成与释放的影响因素,针对铁观音香气研究现状,通过借鉴花卉香气成分的组成、花香形成与释放机理,为铁观音独特香气形成机理的揭示提供一种新思路。 | 何春梅 林进龙 丁凤娇 高水练 叶乃兴 金珊 | 2023 | 茶叶学报2023，64，4： | 0 |
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