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| 1 | RAVL1 Activates IDD3 to Negatively Regulate Rice Resistance to Sheath Blight Disease显示文摘Sheath blight disease (ShB) has a severe impact on the production of rice. ABI3/VP1-like 1(RAVL1) negatively regulated the rice defense mechanism against ShB, however, this regulatorymechanism is not clearly understood. In this study, we identified that indeterminate domain 3 (IDD3) waspositively regulated by RAVL1. Further, chromatin immunoprecipitation (ChIP) assay, yeast one-hybridassay and transient expression assay indicated a direct binding between RAVL1 and the IDD3 promoterregion. IDD3 was ubiquitously expressed in different tissues and at different stages, and its expressionwas significantly enhanced by Rhizoctonia solani infection. IDD3 exhibited transcription activation activityin yeast and IDD3-GFP was found to be localized in the nucleus. IDD3 mutants exhibited no significantdifferences in response to ShB, while IDD3 overexpressors were more susceptible to ShB compared withwild type (WT) plants. Furthermore, IDD3 repressors were less susceptible to R. solani than WT plants.Interestingly, the expression of brassinosteroid-related genes (D2, D11 and BRI1) was lower in IDD3repressors and higher in IDD3 overexpressors compared with WT. However, the ChIP assay revealedthat IDD3 did not directly bind to the D2 and D11 promoters. Overexpression of IDD3 in BRI1 mutantd61-1 inhibited the activity of IDD3, reducing its susceptibility to ShB compared with IDD3 overexpressorand WT plants, indicating that IDD3 negatively regulated the rice defense mechanism against ShB by activatingthe BR signaling pathway. Thus, our analyses provided information to enhance the understanding of therice defense mechanism against ShB. | SUN Qian YANG Shuo GUO Xiaofan WANG Siting JIA Xintong LI Shuang XUAN Yuanhu | 2021 | Rice science2021，28，2： | 2 |
| 2 | 水稻茎秆细胞壁相关组分含量QTL定位及候选基因分析显示文摘水稻(Oryza sativa)倒伏是制约其生产的主要因素之一,而茎秆的机械强度影响水稻抗倒伏能力,且与茎秆细胞壁相关组分含量密切相关。通过调控水稻茎秆细胞壁相关组分含量提高水稻抗倒伏能力,是提高水稻产量与品质的有效途径。该研究用籼稻品种华占(O.sativa subsp.indica cv.‘HZ’)和粳稻品种热研2号(O.sativa subsp.japonica cv.‘Nekken2’)杂交获得F1代,经连续多代自交得到120个重组自交系(RILs)群体,并以此构建遗传连锁图谱。基于构建的高密度遗传图谱,对水稻茎秆细胞壁中纤维素、半纤维素和木质素含量相关QTLs进行定位,结果共检测到4个与纤维素含量相关的QTLs、12个与半纤维素含量相关的QTLs和8个与木质素含量相关的QTLs。对检测到的QTLs区间进行候选基因分析,共筛选到13个候选基因。利用q RT-PCR检测候选基因的表达水平,结果表明除LOC_Os02g58590和LOC_Os12g41720外,其余候选基因的表达量在双亲间均存在显著差异。研究结果为挖掘调控水稻茎秆机械强度的基因,进而筛选和培育抗倒伏能力强的水稻品种奠定了重要基础。 | 贾绮玮 钟芊芊 顾育嘉 陆天麒 李玮 杨帅 朱超宇 胡程翔 李三峰 王跃星 饶玉春 | 2023 | 植物学报2023，58，6： | 0 |
| 3 | The IDD Transcription Factors:Their Functions in Plant Development and Environmental Response显示文摘INDETERMINATE-DOMAIN proteins(IDDs)are a plant-specific transcription factor family characterized by a conserved ID domain with four zinc finger motifs.Previous studies have demonstrated that IDDs coordinate a diversity of physiological processes and functions in plant growth and development,including floral transition,plant architecture,seed and root development,and hormone signaling.In this review,we especially summarized the latest knowledge on the functions and working models of IDD members in Arabidopsis,rice,and maize,particularly focusing on their role in the regulatory network of biotic and abiotic environmental responses,such as gravity,temperature,water,and pathogens.Understanding these mechanisms underlying the function of IDD proteins in these processes is important for improving crop yields by manipulating their activity.Overall,the review offers valuable insights into the functions and mechanisms of IDD proteins in plants,providing a foundation for further research and potential applications in agriculture. | Jing Liu Defeng Shu Zilong Tan Mei Ma Huanhuan Yang Ning Guo Shipeng Li Dayong Cui | 2024 | Phyton-International Journal of Experimental Botany2024，93，1： | 0 |
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