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排序方式: 共有119条查询结果,搜索用时 15 毫秒
21.
Baucher M Oukouomi Lowe Y Vandeputte OM Mukoko Bopopi J Moussawi J Vermeersch M Mol A El Jaziri M Homblé F Pérez-Morga D 《Journal of experimental botany》2011,62(11):4055-4065
Ntann12, encoding a polypeptide homologous to annexins, was found previously to be induced upon infection of tobacco with the bacterium Rhodococcus fascians. In this study, Ntann12 is shown to bind negatively charged phospholipids in a Ca(2+)-dependent manner. In plants growing in light conditions, Ntann12 is principally expressed in roots and the corresponding protein was mainly immunolocalized in the nucleus. Ntann12 expression was inhibited following plant transfer to darkness and in plants lacking the aerial part. However, an auxin (indole-3-acetic acid) treatment restored the expression of Ntann12 in the root system in dark conditions. Conversely, polar auxin transport inhibitors such as 1-naphthylphthalamic acid (NPA) or 2,3,5-triiodobenzoic acid (TIBA) inhibited Ntann12 expression in light condition. These results indicate that the expression of Ntann12 in the root is linked to the perception of a signal in the aerial part of the plant that is transmitted to the root via polar auxin transport. 相似文献
22.
Characterization of the Tomato ARF Gene Family Uncovers a Multi-Levels Post-Transcriptional Regulation Including Alternative Splicing 总被引:1,自引:0,他引:1
23.
Shiwei Song Binbin Huang Zanlin Pan Qiuxiang Zhong Yinghua Yang Da Chen Lisha Zhu Guojian Hu Mi He Caiyu Wu Mohammed Zouine Riyuan Chen Mondher Bouzayen Yanwei Hao 《植物学报(英文版)》2022,64(11):2150-2167
Malformed fruits depreciate a plant’s market value.In tomato(Solanum lycopersicum),fruit malformation is associated with the multi-locule trait,which involves genes regulating shoot apical meristem(SAM) development.The expression pattern of TOPLESS3(SITPL3) throughout SAM development prompted us to investigate its functional significance via RNA interference(RNAi) and clustered regularly interspaced short palindromic repeats/CRISPR-associated nuclease 9(Cas9)-mediated gene editing.Lower SITPL3 t... 相似文献
24.
An iron(III) porphyrin complex containing a bidentate carbonato axial ligand has been synthesized for the first time and fully characterized by UV-Vis, IR and 1H NMR spectroscopies and X-ray crystallography. Proton NMR data for the isolated species is in accordance with high-spin (S = 5/2) ferric derivative. The crystal structure of the (cryptand-222)potassium(+) (dihaptocarbonato)(α,α,α,α-terakis(o-pivalamidophenyl)(porphinato)ferrate(III) chlorobenzene has been determined. This structure confirms the high-spin-state of the carbonato derivative and shows that the coordination sphere of the iron atom is strongly affected by the asymmetric bidentate (η2) mode of the carbonato axial ligand. 相似文献
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Two new iron(II) five-coordinated porphyrin complexes [Na(2,2,2-crypt)] [FeII(TpivPP)(NCO)] (1) (TpivPP = α,α,α,α-tetrakis(o-pivalamidophenyl) porphyrin known as picket fence porphyrin and 2,2,2-crypt is the cryptand-222) and [K(2,2,2-crypt)][FeII(TpivPP)(NCS)] (2) have been prepared and characterized. The UV-Vis and IR spectroscopic data are consistent with a cyanato-N and thiocyanato-N ferrous porphyrinates. The Mössbauer data and the X-ray structural analysis indicate that the Fe(II) cation in 1 and 2 is high-spin (S = 2) and has the (dxy)2(dxz)1(dyz)1(dz2)1(dx2-y2)1 ground state electronic configuration.For complex 1, the average equatorial iron-pyrrole N bond length (Fe-Np = 2.120(2) Å), the distance between the iron and the 24-atom mean plane of the porphyrin ring (Fe-PC = 0.6805(7) Å) and the distance between the iron and the plane made by the four pyrrole nitrogens (Fe-PN = 0.5923(12) Å) are longer than those of complex 2 and similar five-coordinated Fe(II) high-spin porphyrinates. This is probably due to the significant electronic repulsion of the dx2-y2 and dxy orbitals by the negative charge of the pyrrole N atoms in case of 1. 相似文献
28.
Expression of an antisense 1-aminocyclopropane-1-carboxylate oxidase gene stimulates shoot regeneration in Cucumis melo 总被引:1,自引:0,他引:1
M. B. Amor M. Guis A. Latché M. Bouzayen J.-C. Pech J.-P. Roustan 《Plant cell reports》1998,17(6-7):586-589
The role of ethylene in shoot regeneration was investigated using transgenic Cucumis melo plants expressing an antisense 1-aminocyclopropane-1-carboxylate (ACC) oxidase gene. ACC oxidase catalyses the last step
of ethylene biosynthesis. Leaf and cotyledon explants from the transgenic plants exhibited low ACC oxidase activity and ethylene
production, whereas the regeneration capacity of the tissues was greatly enhanced (3.5- and 2.8-fold, respectively) compared
to untransformed control tissues. Addition of ethylene released by 50 or 100 μm 2-chloroethylphosphonic acid dramatically reduced the shoot regeneration rate of the transgenic tissues. The results clearly
demonstrate that ethylene plays an important role in C. melo morphogenesis in vitro.
Received: 23 April 1997 / Revision received: 9 June 1997 / Accepted: 2 July 1997 相似文献
29.
Ethylene-regulated gene expression in tomato fruit: characterization of novel ethylene-responsive and ripening-related genes isolated by differential display 总被引:29,自引:5,他引:24