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| 1 | 植物系统获得抗性中的系统信号及其作用机制显示文摘系统获得抗性(systemic acquired resistance, SAR)是植物受到病菌侵染后诱导产生的一种防御机制,表现为系统性广谱抗性。SAR中通常在侵染部位产生多种可移动的系统信号,转运到植株其余部位,并激活系统性防卫反应。本文综述了水杨酸和水杨酸甲酯、哌啶酸和N-羟基哌啶酸、壬二酸、甘油三磷酸、萜类物质(脱氢枞醛、松萜)等系统信号在SAR中的合成、功能、转运、作用机制及其相互关系。 | 黄子凌 李大勇 宋凤鸣 | 2020 | 植物生理学报2020，56，7： | 6 |
| 2 | 脂氧合酶与作物黄曲霉毒素污染抗性关系研究进展显示文摘曲霉属真菌(Aspergillus)侵染玉米、花生等富含油脂的作物种子后产生的黄曲霉毒素(aflatoxin)具有强致癌作用,严重威胁食品安全和人类健康。脂氧合酶(LOX)及其代谢衍生物在曲霉菌-种子互作中具有重要调节作用。LOX活性的增加可提高植物对细菌、真菌和病毒等病原物的抵抗力,同时由于其催化不饱和脂肪酸代谢生成的脂氧合物如茉莉酸甲酯以及挥发性醛类等物质,可影响黄曲霉菌的生长及黄曲霉毒素的生物合成,因而LOX在作物黄曲霉毒素污染抗性遗传改良中具有潜在的利用价值。本文评述了脂氧合酶及其代谢产物与黄曲霉毒素污染抗性关系的研究进展,旨在从植物-病原菌互作的角度揭示作物黄曲霉毒素污染抗性机制,为下一步的研究提供指导。 | 娄庆任 黄家权 王后苗 廖伯寿 | 2014 | 中国油料作物学报2014，36，1： | 5 |
| 3 | Effects of abiotic stress and hormones on the expressions of five13-CmLOXs and enzyme activity in oriental melon(Cucumis melo var.makuwa Makino)显示文摘Lipoxygenases(LOXs) are a group of non-heme,iron-containing enzymes and extensively involved in plant growth and development,ripening and senescence,stress responses,biosynthesis of regulatory molecules and defense reaction.In our previous study,18 LOXs in melon genome were screened and identified,and five 13-LOX genes(CmLOX08,CmLOX10,CmLOX12,CmLOX13 and CmLOX18) were predicted to locate in chloroplast.Phylogenetic analysis result showed that the five genes have high homology with jasmonic acid(JA) biosynthesis-related LOXs from other plants.In addition,promoter analysis revealed that motifs of the five genes participate in gene expression regulated by hormones and stresses.Therefore,we analyzed the expressions of the five genes and LOX activity in leaves of four-leaf stage seedlings of oriental melon cultivar Yumeiren under abiotic stress:wounding,cold,high temperature and hydrogen peroxide(H_2O_2),and signal molecule treatments:methyl jasmonate(MeJA),abscisic acid(ABA) and salicylic acid(SA).Real time qPCR revealed that wounding and H_2O_2 induced the expressions of all the five genes.Only CmLOX08 was induced by cold while only CmLOX13 was suppressed by high temperature.ABA induced the expressions of CmLOXIO and CmLOX12 while inhibited CmLOX13 and CmLOX18.MeJA increased the 3 genes expressions except CmLOX08 and CmLOX13,whereas SA decreased the effect,apart from CmLOX12.All the abiotic stresses and signal molecules treatments increased the LOX activity in leaves of oriental melon.In summary,the results suggest that the five genes have diverse functions in abiotic stress and hormone responses,and might participate in defense response.The data generated in this study will be helpful in subcellular localization and transgenic experiment to understand their precise roles in plant defense response. | LIU Jie-ying ZHANG Chong SHAO Qi TANG Yu-fan CAO Song-xiao GUO Xiao-ou JIN Ya-zhong QI Hong-yan | 2016 | Journal of Integrative Agriculture2016，15，2： | 0 |
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