Cell surface and intracellular auxin signalling for H~+ fluxes in root growth

Li Lanxin; Verstraeten Inge; Roosjen Mark; Takahashi Koji; Rodriguez Lesia; Merrin Jack; Chen Jian; Shabala Lana; Smet Wouter; Ren Hong; Vanneste Steffen; Shabala Sergey; De Rybel Bert; Weijers Dolf; Kinoshita Toshinori; Gray William M.; Friml Jiri

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Cell surface and intracellular auxin signalling for H~+ fluxes in root growth

机译：细胞表面和细胞内植物素信号在根生长中的H〜+助熔剂

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Growth regulation tailors development in plants to their environment. A prominent example of this is the response to gravity, in which shoots bend up and roots bend down(1). This paradox is based on opposite effects of the phytohormone auxin, which promotes cell expansion in shoots while inhibiting it in roots via a yet unknown cellular mechanism(2). Here, by combining microfluidics, live imaging, genetic engineering and phosphoproteomics in Arabidopsis thaliana, we advance understanding of how auxin inhibits root growth. We show that auxin activates two distinct, antagonistically acting signalling pathways that converge on rapid regulation of apoplastic pH, a causative determinant of growth. Cell surface-based TRANSMEMBRANE KINASE1 (TMK1) interacts with and mediates phosphorylation and activation of plasma membrane H+-ATPases for apoplast acidification, while intracellular canonical auxin signalling promotes net cellular H+ influx, causing apoplast alkalinization. Simultaneous activation of these two counteracting mechanisms poises roots for rapid, fine-tuned growth modulation in navigating complex soil environments.

机译：生长调节裁缝在植物中的发展到他们的环境。一个突出的例子是对重力的响应，其中射击弯曲并弯曲下来（1）。该悖论基于植物激素毒素的相反效果，其促进芽中的细胞膨胀，同时通过尚不清楚的细胞机制（2）抑制其根部。在这里，通过组合微流体，实时成像，基因蛋白酶和磷蛋白酶在拟南芥中，我们推进了疾病如何抑制根系生长的理解。我们表明，生长素激活两个不同的拮抗作用信号传导途径，其会聚在妊娠塑料pH的快速调节，其生长的致病决定因素。基于细胞表面的跨膜激酶1（TMK1）与磷酸化酸化的相互作用和介导的磷酸化和激活血浆膜H + -ATP酶，而细胞内典型的植物素信号传导促进净细胞H +流入，从而导致胰腺炎含量。同时激活这两种抵抗机制在导航复杂的土壤环境中进行快速，微调生长调制的根源。

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《Nature》 |2021年第7884期|273-277|共5页
作者
Li Lanxin; Verstraeten Inge; Roosjen Mark; Takahashi Koji; Rodriguez Lesia; Merrin Jack; Chen Jian; Shabala Lana; Smet Wouter; Ren Hong; Vanneste Steffen; Shabala Sergey; De Rybel Bert; Weijers Dolf; Kinoshita Toshinori; Gray William M.; Friml Jiri;
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作者单位

IST Austria Klosterneuburg Austria;

IST Austria Klosterneuburg Austria;

Wageningen Univ Dept AgrotechnoL & Food Sci Lab Biochem Wageningen Netherlands;

Nagoya Univ Chikusa Inst Transformat Biomol Div Biol Sci Nagoya Aichi Japan|Nagoya Univ Chikusa Grad Sch Sci Nagoya Aichi Japan;

IST Austria Klosterneuburg Austria;

IST Austria Klosterneuburg Austria;

Univ Ghent Dept Plant Biotechnol & Bioinformat Ghent Belgium|VIB Ctr Plant Syst Biol Ghent Belgium;

Univ Tasmania Tasmanian Inst Agr Coll Sci & Engn Hobart Tas Australia;

Univ Ghent Dept Plant Biotechnol & Bioinformat Ghent Belgium|VIB Ctr Plant Syst Biol Ghent Belgium;

Univ Minnesota Dept Plant & Microbial Biol St Paul MN USA;

Univ Ghent Dept Plant Biotechnol & Bioinformat Ghent Belgium|Univ Ghent Lab Plant Growth Anal Global Campus Incheon South Korea|Univ Ghent Dept Plants & Crops HortiCell Ghent Belgium;

Univ Tasmania Tasmanian Inst Agr Coll Sci & Engn Hobart Tas Australia|Foshan Univ Int Res Ctr Environm Membrane Biol Foshan Peoples R China;

Univ Ghent Dept Plant Biotechnol & Bioinformat Ghent Belgium|VIB Ctr Plant Syst Biol Ghent Belgium;

Wageningen Univ Dept AgrotechnoL & Food Sci Lab Biochem Wageningen Netherlands;

Nagoya Univ Chikusa Inst Transformat Biomol Div Biol Sci Nagoya Aichi Japan|Nagoya Univ Chikusa Grad Sch Sci Nagoya Aichi Japan;

Univ Minnesota Dept Plant & Microbial Biol St Paul MN USA;

IST Austria Klosterneuburg Austria;

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收录信息美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
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2. Data-Driven Modeling of Intracellular Auxin Fluxes Indicates a Dominant Role of the ER in Controlling Nuclear Auxin Uptake [J] . Alistair M. Middleton, Cristina Dal Bosco, Phillip Chlap, Cell Reports . 2018,第11期

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4. Static magnetic field regulates Arabidopsis root growth via auxin signaling [C] . Yue Jin, Wei Guo, Xupeng Hu, The 8th International Conference on Magneto- Science（第八届国际磁科学会议）论文集 . -1

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5. Alterations in cell surface receptor expression and intracellular signaling in Schwann cells derived from NF1 tumors. [D] . Dang, Ian Duc. 2002

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6. SCFTIR1/AFB-auxin signalling regulates PIN vacuolar trafficking and auxin fluxes during root gravitropism [O] . Paweł Baster, Stéphanie Robert, Jürgen Kleine-Vehn, 2013

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7. Antagonistic cell surface and intracellular auxin signalling regulate plasma membrane H+-fluxes for root growth [O] . Lanxin Li, Inge Verstraeten, Mark Roosjen, 2021

机译：拮抗细胞表面和细胞内养蛋白信号传导调节血浆膜H + -FLUXES用于根生长

Cell surface and intracellular auxin signalling for H~+ fluxes in root growth

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