·常規(guī)信息 最近更新:2024年6月20日 4:39:00 | |||||||||||
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基因(座)名稱 | 生長(zhǎng)素外向轉(zhuǎn)運(yùn)載體 auxin efflux transporter | ||||||||||
基因符號(hào) | OsPIN1b; REH1; OsPIN1a | ||||||||||
所在染色體 | 2 (已克。 | ||||||||||
OsPIN1/REH1(AF056027, Xu et al. 2005), OsPIN1b(LOC_Os02g50960, Wang et al. 2009, Li et al. 2014, Li et al. 2019, Li et al. 2021; primers for qRT-PCR: 5'-TGCACCCTAGCATTCTCAGCA-3'/5'-CCCTCCTCCCAAATTCTACTT-3', Sun et al. 2018; Os02g0743400, Li et al. 2022), OsPIN1a(Os02g0743400, Miyashita et al. 2010, XU et al. 2014), 位于同一基因位點(diǎn)... 【突變體表型】OsPIN1-RNAi轉(zhuǎn)基因株系,不定根的發(fā)生和發(fā)育被顯著抑制,表現(xiàn)出類似于野生型植株被生長(zhǎng)素抑制劑NPA處理后的表型,α-NAA處理可以回復(fù)RNAi轉(zhuǎn)基因植株的表型;過(guò)量表達(dá)或抑制表達(dá)OsPIN1,會(huì)導(dǎo)致轉(zhuǎn)基因植株分蘗數(shù)目的和根冠比的變化(Xu et al. 2005)。 相比野生型,pin1a和pin1b沒有明顯表型,但雙突變體pin1a pin1b具有較短的地上部和主根、較少的冠根、較低的根系向重性、較長(zhǎng)的根毛和較大的穗分枝角,表明OsPIN1a和OsPIN1b參與水稻的根、莖和穗發(fā)育(Li et al. 2019)。 突變體ospin1b種子根比野生型短;ospin1b-1突變體中,種子根、[3H]IAA轉(zhuǎn)運(yùn)和IAA濃度對(duì)低氮、低磷、硝普鈉(一氧化氮供體)和獨(dú)腳金內(nèi)酯類似物GR24處理的反應(yīng)減弱(Sun et al. 2018)。 與野生型相比,OsPIN1b和PILS6b敲除株系ospin1b-cri、pils6b-cri的分蘗數(shù)顯著增加,OsPIN1b和PILS6b過(guò)表達(dá)株系的分蘗數(shù)減少。剝?nèi)?5日齡幼苗的葉鞘后,發(fā)現(xiàn)ospin1b-cri和pils6b-cri植株的腋芽已經(jīng)進(jìn)入生長(zhǎng)期并形成分枝,而對(duì)照的腋芽仍處于起始階段。因此,OsPIN1b和PILS6b的表達(dá)水平與水稻腋芽發(fā)育負(fù)相關(guān)(Li et al. 2022)。 【定位與克隆】
【時(shí)空表達(dá)譜】OsPIN1在維管組織和根原基表達(dá)(Xu et al. 2005)。 qRT-PCR分析表明,OsPIN1b在水稻根尖表達(dá)最豐富,低氮、低磷、硝普鈉(一氧化氮供體)和獨(dú)腳金內(nèi)酯類似物GR24處理后顯著下調(diào)(Sun et al. 2018)。 【亞細(xì)胞定位】細(xì)胞膜(Li et al. 2014) 【生物學(xué)功能】OsPIN1在依賴生長(zhǎng)素的不定根和分蘗發(fā)生的過(guò)程中起著重要的作用(Xu et al. 2005)。 OsPIN1b參與生長(zhǎng)素的運(yùn)輸,在低氮低磷條件下,作用于一氧化氮和獨(dú)腳金內(nèi)酯下游,誘導(dǎo)根尖分生組織活性,正調(diào)控水稻種子根的伸長(zhǎng)(Sun et al. 2018)。 生長(zhǎng)素輸出載體OsPIN1b和PILS6b參與水稻分蘗發(fā)育。轉(zhuǎn)錄因子OsSPL14能結(jié)合在OsPIN1b和PILS6b啟動(dòng)子區(qū)域的GTAC順式作用元件上,激活它們表達(dá)(Li et al. 2022)。 【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), 穗發(fā)育性狀(TO:0000621), 分蘗數(shù)(TO:0000346), 幼苗高度(TO:0000019), 向重性(TO:0002693), 根冠比(TO:0000278), 種子根長(zhǎng)度(TO:0000586), 生長(zhǎng)素含量(TO:0002672), 根毛密度(TO:0001051) |
分子功能 | 生長(zhǎng)素外向轉(zhuǎn)運(yùn)載體活性(GO:0010329) |
生物進(jìn)程 | 穗發(fā)育(GO:0010229), 生長(zhǎng)素極性運(yùn)輸(GO:0009926), 向地性(GO:0009630), 生長(zhǎng)素應(yīng)答(GO:0009733), 不定根發(fā)育(GO:0048830), 根毛發(fā)生(GO:0048766), 初生根發(fā)育(GO:0080022), 分蘗形成(GO:0010223), 生長(zhǎng)素穩(wěn)態(tài)維持(GO:0010252), 幼苗生長(zhǎng)發(fā)育調(diào)控(GO:1900140) |
·參考文獻(xiàn) |
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1. Yan Li;Yizhou He;Zhixin Liu;Tian Qin;Lei Wang;Zhihui Chen;Biaoming Zhang;Haitao Zhang;Haitao Li;Li Liu;Jian Zhang;Wenya Yuan OsSPL14 acts upstream of OsPIN1b and PILS6b to modulate axillary bud outgrowth by fine-tuning auxin transport in rice The Plant Journal, 2022, 111(4): 1167-1182 |
2. Jinjie Li;Bo Tang;Yingxiu Li;Chenguang Li;Minjie Guo;Haiyang Chen;Shichen Han;Jin Li;Qijin Lou;Wenqiang Sun;Peng Wang;Haifeng Guo;Wei Ye;Zhanying Zhang;Hongliang Zhang;Sibin Yu;Long Zhang;Zichao Li Rice SPL10 positively regulates trichome development through expression of HL6 and auxin-related genes Journal of Integrative Plant Biology, 2021, 63(8): 1521-1537 |
3. Yong Li;Jianshu Zhu;Lingling Wu;Yanlin Shao;Yunrong Wu;Chuanzao Mao Functional Divergence of PIN1 Paralogous Genes in Rice Plant and Cell Physiology, 2019, 60(12): 2720-2732 |
4. Huwei Sun;Jinyuan Tao;Yang Bi;Mengmeng Hou;Jiajing Lou;Xinni Chen;Xuhong Zhang;Le Luo;Xiaonan Xie;Koichi Yoneyama;Quanzhi Zhao;Guohua Xu;Yali Zhang OsPIN1b is Involved in Rice Seminal Root Elongation by Regulating Root Apical Meristem Activity in Response to Low Nitrogen and Phosphate Scientific Reports, 2018, 8: 13014 |
5. Hua-wei XU;Yi-wei MO;Wei WANG;Hai WANG;Zhong WANG OsPIN1a Gene Participates in Regulating Negative Phototropism of Rice Roots Rice Science, 2014, 21(2): 83-89 |
6. Gang Li;Wanqi Liang;Xiaoqing Zhang;Haiyun Ren;Jianping Hu;Malcolm J. Bennett;Dabing Zhang Rice actin-binding protein RMD is a key link in the auxin–actin regulatory loop that controls cell growth Proceedings of the National Academy of Sciences, 2014, 111(28): 10377-10382 |
7. Yui Miyashita;Tomoaki Takasugi;Yukihiro Ito Identification and expression analysis of PIN genes in rice Plant Science, 2010, 178(5): 424-428 |
8. Ji-Rong Wang;Han Hu;Gao-Hang Wang;Jing Li;Jie-Yu Chen;Ping Wu Expression of PIN genes in rice (Oryza sativa L.): tissue specificity and regulation by hormones Molecular Plant, 2009, 2(4): 823-831 |
9. Min Xu;Ling Zhu;Huixia Shou;Ping Wu A PIN1 Family Gene, OsPIN1, involved in Auxin-dependent Adventitious Root Emergence and Tillering in Rice Plant and Cell Physiology, 2005, 46(10): 1674-1681 |
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