AUXIN-BINDING-PROTEIN1 (ABP1) in phytochrome-B-controlled responses.
AUXIN-BINDING-PROTEIN1 (ABP1) in phytochrome-B-controlled responses.
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DOI：
10.1093/jxb/ert294
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发表时间：
2013-11
影响因子：
6.9
通讯作者：
Scherer GF
中科院分区：
文献类型：
--
作者：
Effendi Y;Jones AM;Scherer GF
生长素受体ABP1直接调节质膜活性，包括PIN形成蛋白的数量和生长素的外流运输。由光敏色素介导的红光(R)调节黄化组织中ABP1的稳态水平和生长素诱导的生长能力，但到目前为止，还没有遗传证据表明ABP1和光敏色素对器官伸长的调节具有共同的机制。在远红光下，abp1-5和abp1/abp1突变体的下胚轴长度较长，而运输抑制反应生长素受体的零突变体TIR1-1的下胚轴长度不变。生长素运输抑制剂萘基邻苯二甲酸(NPA)对伸长的抑制作用在低R：FR光照条件下比在高红：FR光照条件下更明显，这表明生长素运输是FR诱导伸长的重要条件。与野生型下胚轴相比，在富含R和FR的光下生长的下胚轴中加入NPA对下胚轴向重力性的抑制程度在abp1突变体中更大，在abp1突变体中与生长素运输相关的光敏色素作用减弱。富含FR的光诱导基因，包括几个受生长素和遮荫调控的基因，在abp1-5中的转录水平比Col低3-5倍，在abp1/abp1中的转录水平很低。在PhyB-9突变体中，这些报告基因在TIR1-1中的表达比在Col1-1中低5-15倍，而PhyA-211突变体的遮荫诱导基因表达明显减弱。因此，ABP1直接或间接参与生长素和光信号转导。
The auxin receptor ABP1 directly regulates plasma membrane activities including the number of PIN-formed (PIN) proteins and auxin efflux transport. Red light (R) mediated by phytochromes regulates the steady-state level of ABP1 and auxin-inducible growth capacity in etiolated tissues but, until now, there has been no genetic proof that ABP1 and phytochrome regulation of elongation share a common mechanism for organ elongation. In far red (FR)-enriched light, hypocotyl lengths were larger in the abp1-5 and abp1/ABP1 mutants, but not in tir1-1, a null mutant of the TRANSPORT-INHIBITOR-RESPONSE1 auxin receptor. The polar auxin transport inhibitor naphthylphthalamic acid (NPA) decreased elongation in the low R:FR light-enriched white light (WL) condition more strongly than in the high red:FR light-enriched condition WL suggesting that auxin transport is an important condition for FR-induced elongation. The addition of NPA to hypocotyls grown in R- and FR-enriched light inhibited hypocotyl gravitropism to a greater extent in both abp1 mutants and in phyB-9 and phyA-211 than the wild-type hypocotyl, arguing for decreased phytochrome action in conjunction with auxin transport in abp1 mutants. Transcription of FR-enriched light-induced genes, including several genes regulated by auxin and shade, was reduced 3-5-fold in abp1-5 compared with Col and was very low in abp1/ABP1. In the phyB-9 mutant the expression of these reporter genes was 5–15-fold lower than in Col. In tir1-1 and the phyA-211 mutants shade-induced gene expression was greatly attenuated. Thus, ABP1 directly or indirectly participates in auxin and light signalling.
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影响因子：
11.6
作者：
Aukerman, MJ;Hirschfeld, M;Sharrock, RA
通讯作者：
Sharrock, RA
影响因子：
10.5
作者：
Chen, JG;Ullah, H;Jones, AM
通讯作者：
Jones, AM
影响因子：
56.9
作者：
Jones, AM;Im, KH;Binns, AN
通讯作者：
Binns, AN
影响因子：
7.4
作者：
Devlin, PF;Yanovsky, MJ;Kay, SA
通讯作者：
Kay, SA
DOI：
10.1111/j.1365-313x.2010.04476.x
发表时间：
2011-03
期刊：
The Plant journal : for cell and molecular biology
影响因子：
--
作者：
Cole B;Kay SA;Chory J
通讯作者：
Chory J