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| 1 | Genome-Wide Association Studies of Image Traits Reveal Genetic Architecture of Drought Resistance in Rice显示文摘理解植物怎么对干旱作出回应能有益于繁殖的干旱抵抗(医生) 。用一台非破坏性的 phenotyping 设备,为 507 米饭就职的 51 个基于图象的特点(i 特点) 被提取。这些 i 特点能被用来监视干旱回答 ? 并且高评估医生可遗传性和这些特点的大变化在自然人口在干旱应力下面被观察。染色体宽的协会研究(GWAS )?i 特点和传统的医生特点识别了 470 协会 loci,某包含知道医生相关的基因。这 470 loci, 443 loci (94%) 用 i 特点被识别, 437 loci (93%) 与以前报导的医生相关的量的特点 loci,和 313 loci (66.6%)co 局部性被 GWAS reproducibly 在不同的年里识别。协会网络,基于 GWAS 建立了结果,揭示中心 i 特点和中心 loci。这表明把的可行性和必要性复杂医生特点进可继承、简单的 i 特点。作为原则的证明,我们说明了这条综合途径的力量以前识别 unreported 医生相关的基因。OsPP15 与中心 i 特点被联系,并且它在医生的角色被基因转变实验证实。而且, i 特点能被用于医生连接分析,并且 69 个 i 特点地点协会被 recombinant 的 GWAS 和连接分析识别生来的线人口。最后,我们证实了 i 特点的关联在这个领域里搀。我们的学习为医生为原因的基因的基因解剖和发现提供一条有希望的新奇途径。 | Zilong Guo Wanneng Yang Yu Chang Xiaosong Ma Haifu Tu Fang Xiong Ni Jiang Hui Feng Chenglong Huang Peng Yang Hu Zhao Guoxing Chen Hongyan Liu Lijun Luo Honghong Hu Qian Liu Lizhong Xiong | 2018 | Molecular Plant2018，11，6： | 21 |
| 2 | Reversible Histone H2B Monoubiquitination Fine-Tunes Abscisic Acid Signaling and Drought Response in Rice显示文摘Histone H2B monoubiquitination (H2Bub1) plays important roles in several physiological and developmental processes, but its roles in the regulation of plant stress responses remain elusive. Here, we report that H2Bub1 is crucially involved in abscisic acid (ABA) signaling and drought response in rice. We found that rice HISTONE MONOUBIQUITINATION2 (OsHUB2), an E3 ligase for H2Bub1, in teracted with OsbZIP46, a key transcription factor regulating ABA signaling and drought response in rice. Genetic analyses suggest that OsHUB2, upregulated by drought and ABA, positively modulates ABA sensitivity and drought resistance. The H2Bub1 levels were in creased in the target genes of OsbZIP46 under the drought stress and ABA treat- merits, which were positively correlated with their increased expression levels. Interestingly, MODD, a reported suppressor of ABA signaling and drought resistance by mediating OsbZIP46 deactivation and degradation, could reduce the H2Bub1 levels in the target genes of OsbZIP46 by recruiting a putative deubiquitinase OsOTLD1 . Suppression of OsOTLD1in vivo resulted in increased H2Bub1 levels and expression of OsbZIP46 target genes. Collectively, these fin dings established an elaborate mecha nism of histone monoubiquitination in the fine-turning of ABA signaling and drought response by balancing H2Bub1 deposition and removal. | Siqi Ma Ning Tang Xu Li Yongjun Xie Denghao Xiang Jie Fu Jianqiang Shen Jun Yang Haifu Tu Xianghua Li Honghong Hu Lizhong Xiong | 2019 | Molecular Plant2019，12，2： | 7 |
| 3 | Genome-wide association study revealed genetic variations of ABA sensitivity controlled by multiple stress-related genes in rice显示文摘Abscisic acid(ABA)is a critical phytohormone that regulates multiple physiological processes including plant growth and stress tolerance.The core ABA signaling pathway has been well established,but genetic variations mediating ABA responses remain largely unknown.In this study,we performed genome-wide association study(GWAS)to identify loci and genes associated with ABA sensitivity(reflected by seed germination inhibition by ABA)in a panel of 425 rice accessions.The seed germination assay revealed that Aus and indica rice had stronger ABA sensitivity than japonica rice.A total of 48 non-redundant association loci were detected in the indica subpopulation and whole population,and 386 genes in these loci were responsive to ABA or abiotic stresses.Eight association loci were overlapped with previously reported loci for yield under drought stress or for droughtindicative image traits.Haplotype analyses of important candidate genes such as OsSAPK6,a key component in the ABA signaling core,were performed to identify key SNPs/InDels that may affect gene functions through promoter activity regulation,amino acid variation,or gene splicing.These results provide insights into the genetic basis of ABA sensitivity related to stress responses. | Lei Peng Tingting Xie Zilong Guo Xiaokai Li Yu Chang Haifu Tu Shengchang Wang Nai Wu Yilong Yao Lizhong Xiong | 2021 | Stress Biology2021，1，1： | 0 |
| 4 | IQ67 DOMAIN protein 21 is critical for indentation formation in pavement cell morphogenesis显示文摘In plants, cortical microtubules anchor to the plasma membrane in arrays and play important roles in cell shape. However, the molecular mechanism of microtubule binding proteins, which connect the plasma membrane and cortical microtubules in cell morphology remains largely unknown. Here, we report that a plasma membrane and microtubule duallocalized IQ67 domain protein, IQD21, is critical for cotyledon pavement cell(PC) morphogenesis in Arabidopsis. iqd21 mutation caused increased indentation width, decreased lobe length, and similar lobe number of PCs, whereas IQD21 overexpression had a different effect on cotyledon PC shape. Weak overexpression led to increased lobe number, decreased indentation width, and similar lobe length, while moderate or great overexpression resulted in decreased lobe number, indentation width, and lobe length of PCs. Live-cell observations revealed that IQD21 accumulation at indentation regions correlates with lobe initiation and outgrowth during PC development. Cell biological and genetic approaches revealed that IQD21 promotes transfacial microtubules anchoring to the plasma membrane via its polybasic sites and bundling at the indentation regions in both periclinal and anticlinal walls. IQD21 controls cortical microtubule organization mainly through promoting Katanin 1-mediated microtubule severing during PC interdigitation. These findings provide the genetic evidence that transfacial microtubule arrays play a determinant role in lobe formation, and the insight into the molecular mechanism of IQD21 in transfacial microtubule organization at indentations and puzzle-shaped PC development. | Xinhua Feng Shujuan Pan Haifu Tu Junjie Huang Chuanlei Xiao Xin Shen Lei You Xinyan Zhao Yongqiang Chen Danyun Xu Xiaolu Qu Honghong Hu | 2023 | Journal of Integrative Plant Biology2023，65，3： | 0 |
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