·常規(guī)信息 最近更新:2021年1月27日 15:02:00 | |||||
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基因(座)名稱(chēng) | 多蘗半矮稈; 微RNA semidwarf and high-tillering; microRNA | ||||
基因符號(hào) | OsmiR156h; sdt; miR-156; miRNA156; miR156j | ||||
所在染色體 | 6 (已克隆) | ||||
SDT/OsmiR156h(LOC_Os06g44034, Zhao et al. 2015; MI0000662, Miao et al. 2019)... SDT編碼OsmiR156h microRNA的前體。Zhao et al. 2015一文中的OsmiR156h,對(duì)應(yīng)miRBase數(shù)據(jù)庫(kù)的osa-miR156j-5p。 【定位與克隆】依據(jù)序列和功能差異,miR156分為兩個(gè)亞族:II類(lèi)包括miR156a/b/c/k/l,突變會(huì)顯著增強(qiáng)種子休眠,抑制穗發(fā)芽,對(duì)株型和產(chǎn)量影響微不足道;I類(lèi)包括miR156d/e/f/g/h/i,缺失會(huì)抑制無(wú)效分蘗、增加株高、增強(qiáng)莖稈抗倒能力、增加粒長(zhǎng)和粒重,表現(xiàn)為理想株型形態(tài),對(duì)種子休眠無(wú)顯著影響(Miao et al. 2019)。 圖位克隆表明,sdt中LOC_Os06g44034第2外顯子有131 bp的替換,SDT編碼OsmiR156h microRNA的前體(Zhao et al. 2015)。 ---- uc cau aaggc u - - a c c u c g 5' uuggggcggg gcggga gag auga gagau guugacagaa gag agugagcac cggcg gg ggc ag cauc g |||||||||| |||||| ||| |||| ||||| |||||||||| ||| ||||||||| ||||| || ||| || |||| c 3' agccccgccc cgcccu cuc uacu cucua cgacugucuu cuc ucgcucgug gccgc cc ccg uc guag g ccua cc -ac ----- - u c c - - - c g 基因組位置(MSU7):Chr6: 26554795-26554959 [+] 成熟osa-miR156j-5p的序列(5'→3'):42 - ugacagaagagagugagcac - 61 成熟osa-miR156j-3p的序列(5'→3'):108 - gcucgcuccucuuucugucagc - 129 【突變體表型】突變體mir156abcdfghikl、mir156defghi和mir156abckl幼苗不定根數(shù)顯著少于野生型,表明I類(lèi)和II類(lèi)miR156對(duì)水稻不定根形成都起作用(Miao et al. 2019)。 sdt自然等位變異會(huì)影響株高和分蘗,sdt植株表現(xiàn)出株高變矮、抗倒伏性增強(qiáng)、分蘗數(shù)增加以及產(chǎn)量提高等表型(Zhao et al. 2015)。 【時(shí)空表達(dá)譜】
【亞細(xì)胞定位】
【生物學(xué)功能】miR-156–IPA1是水稻生長(zhǎng)和防衛(wèi)之間的新調(diào)節(jié)因子(Liu et al. 2019) OsmiR156h的多聚腺苷酸化狀態(tài)會(huì)引起sdt的表型。sdt等位基因和OsSPL14WFP等位基因聚合,能同時(shí)有效提高分蘗能力以及穗部分枝,因而提高收獲指數(shù)和稻谷產(chǎn)量。最重要的是,在雜交水稻育種中,將sdt等位基因和綠色革命基因sd1聚合,能夠提高稻谷產(chǎn)量約20%(Zhao et al. 2015)。 OsmiR156h能調(diào)控OsSPL14,進(jìn)而影響水稻的株型,如分蘗和穗分枝等(Zhao et al. 2015)。 Osmir156能作用于OsSPL3和OsSPL12的轉(zhuǎn)錄本,使其降解,參與調(diào)控冠狀根發(fā)育,其在細(xì)胞中的積累水平受CRD1調(diào)控。OsSPL3或OsSPL12能與下游靶基因OsMADS50的啟動(dòng)子區(qū)結(jié)合,調(diào)控其表達(dá)。因此,“CRD1-miR156-OsSPL3/OsSPL12-OsMADS50”可能組成一個(gè)模塊,通過(guò)調(diào)控生長(zhǎng)素轉(zhuǎn)運(yùn)(如OsPIN2, OsPIN5a, OsPIN5c)和信號(hào)傳導(dǎo)(如OsIAA5, OsARF13, OsARF19),參與調(diào)控水稻不定根發(fā)生(Zhu et al. 2019; Shao et al. 2019)。 【相關(guān)登錄號(hào)】
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·ONTOLOGY及相關(guān)基因 | |
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表型特征 | 不定根數(shù)(TO:0001006), 白葉枯病抗性(TO:0000175), 株高(TO:0000207), 莖稈機(jī)械強(qiáng)度(TO:0000051), 分蘗數(shù)(TO:0000346), 籽粒產(chǎn)量(TO:0000396), 穗分枝(TO:0000050), 每穗粒數(shù)(TO:0002759), 粒長(zhǎng)(TO:0000734), 抗倒性(TO:0000068), 收獲指數(shù)(TO:0000128), 千粒重(TO:0000592) |
分子功能 | mRNA結(jié)合(GO:0003729) |
序列特征 | 微RNA(SO:0000276) |
生物進(jìn)程 | 穗發(fā)育(GO:0010229), 節(jié)間發(fā)育模式建成(GO:0080006), 不定根發(fā)育(GO:0048830), 生長(zhǎng)素極性運(yùn)輸調(diào)控(GO:2000012), 生長(zhǎng)素信號(hào)通路調(diào)控(GO:0010928), miRNA介導(dǎo)的基因沉默(GO:0035195), 分蘗形成調(diào)控(GO:2000032), 種子發(fā)育調(diào)控(GO:0080050), 抗細(xì)菌反應(yīng)調(diào)控(GO:1900424) |
·參考文獻(xiàn) |
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1. Mingming Liu;Zhenying Shi;Xiaohan Zhang;Mingxuan Wang;Lin Zhang;Kezhi Zheng;Jiyun Liu;Xingming Hu;Cuiru Di;Qian Qian;Zuhua He;Dong-Lei Yang Inducible overexpression of Ideal Plant Architecture1 improves both yield and disease resistance in rice Nature Plants, 2019, 5: 389-400 |
2. Yanlin Shao;Hongzhu Zhou;Yun Rong Wu;Hui Zhang;Jian Lin;Xiaoyan Jiang;Qiuju He;Jianshu Zhu;Yong Li;Hao Yu;Chuanzao Mao OsSPL3, a SBP-Domain Protein, Regulates Crown Root Development in Rice The Plant Cell, 2019, 31(6): 1257-1275 |
3. Jianshu Zhu;Yong Li;Jian Lin;Yunrong Wu;Huaxing Guo;Yanlin Shao;Fei Wang;Xiaofei Wang;Xiaorong Mo;Shaojian Zheng;Hao Yu;Chuanzao Mao CRD1, an Xpo1 domain protein, regulates miRNA accumulation and crown root development in rice The Plant Journal, 2019, 100(2): 328-342 |
4. Chunbo Miao;Zhen Wang;Lin Zhang;Juanjuan Yao;Kai Hua;Xue Liu;Huazhong Shi;Jian-Kang Zhu The grain yield modulator miR156 regulates seed dormancy through the gibberellin pathway in rice Nature Communications, 2019, 10: 3822 |
5. Meng Zhao;Binmei Liu;Kun Wu;Yafeng Ye;Shixia Huang;Shuansuo Wang;Yi Wang;Ruixi Han;Qian Liu;Xiangdong Fu;Yuejin Wu Regulation of OsmiR156h through Alternative Polyadenylation Improves Grain Yield in Rice PLoS ONE, 2015, 10(5): e0126154 |
6. Yongqing Jiao;Yonghong Wang;Dawei Xue;Jing Wang;Meixian Yan;Guifu Liu;Guojun Dong;Dali Zeng;Zefu Lu;Xudong Zhu;Qian Qian;Jiayang Li Regulation of OsSPL14 by OsmiR156 defines ideal plant architecture in rice Nature Genetics, 2010, 42(6): 541-544 |
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