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| 1 | Synthesis of Ag-SiO_2 composite nanospheres and their catalytic activity显示文摘A simple,mild,and time-saving method is employed to synthesize Ag-SiO2 composite nanospheres with Ag nanoparticles uniformly distributed on the surface of SiO2 nanoparticles.The chemical elements and the morphology of Ag-SiO2 composite nanospheres were analyzed with transmission electron microscopy(TEM),X-ray power diffraction(XRD),and X-ray photoelectron spectroscopy(XPS).On the surface of Ag-SiO2 composite nanospheres,silane coupling agent(KH-550)is introduced as an intermediary to connect the surfaces of SiO2 nanospheres and Ag nanoparticles,which is also helpful for avoiding the aggregation of Ag nanoparticles.It is found that Ag-SiO2 composite nanospheres have very good catalytic properties for the reduction of organic dyes,which may have potential application in wastewater treatment. | HAN QingYan LI GuiAn WANG DeXuan HE EnJie DONG Jun GAO Wei LI JunNa LIU TingZhuo ZHANG ZhongYue ZHENG HaiRong | 2014 | Science China Chemistry2014，57，6： | 2 |
| 2 | A domesticated Harbinger transposase forms a complex with HDA6 and promotes histone H3 deacetylation at genes but not TEs in Arabidopsis显示文摘In eukaryotes,histone acetylation is a major modification on histone N-terminal tails that is tightly connected to transcriptional activation.HDA6 is a histone deacetylase involved in the transcriptional regulation of genes and transposable elements(TEs)in Arabidopsis thaliana.HDA6 has been shown to participate in several complexes in plants,including a conserved SIN3 complex.Here,we uncover a novel protein complex containing HDA6,several Harbinger transposon-derived proteins(HHP1,SANT1,SANT2,SANT3,and SANT4),and MBD domain-containing proteins(MBD1,MBD2,and MBD4).We show that mutations of all four SANT genes in the sant-null mutant cause increased expression of the flowering repressors FLC,MAF4,and MAF5,resulting in a late flowering phenotype.Transcriptome deep sequencing reveals that while the SANT proteins and HDA6 regulate the expression of largely overlapping sets of genes,TE silencing is unaffected in sant-null mutants.Our global histone H3 acetylation profiling shows that SANT proteins and HDA6 modulate gene expression through deacetylation.Collectively,our findings suggest that Harbinger transposon-derived SANT domain-containing proteins are required for histone deacetylation and flowering time control in plants. | Xishi Zhou Junna He Christos N.Velanis Yiwang Zhu Yuhan He Kai Tang Mingku Zhu Lisa Graser Erica de Leau Xingang Wang Lingrui Zhang W.Andy Tao Justin Goodrich Jian-Kang Zhu Cui-Jun Zhang | 2021 | Journal of Integrative Plant Biology2021，63，8： | 0 |
| 3 | R2R3-type Lo MYB21 affects jasmonate-regulated development and dehiscence of anthers in lily(Lilium oriental hybrids)显示文摘Lilies are widely cultivated for cut flowers,but their large anthers carry a considerable amount of colored pollen that is dispersed easily.Studying the molecular mechanism of anther development and dehiscence could help solve this problem.LoMYB21,encoding a putative R2R3v-myb avian myeloblastosis viral oncogene homolog(MYB)transcription factor,was identified from oriental lilies(Lilium‘Siberia’).Real-time quantitative PCR analysis showed that LoMYB21 was mainly expressed in the anther,filament and stigma and had high expression during the late stages of lily anther development.LoMYB21 had transactivation activity and was located in the nucleus through yeast one-hybrid assays and transient expression in Nicotiana benthamiana.Suppression of LoMYB21 by virus-induced gene silencing(VIGS)in Lilium‘Siberia’led to anther indehiscence and reduced the expression of genes related to Jasmonate acid(JA)biosynthesis and signal transduction.Induction of LoMYB21 in DEX::LoMYB21 transgenic Arabidopsis caused procumbent inflorescences that became infertile,accompanied by higher expression of JA biosynthetic and signaling genes.These results demonstrated that JA content and signaling were abnormal in silenced lily and transgenic LoMYB21 Arabidopsis,which affected anther development.Our study indicated that LoMYB21 could regulate lily anther dehiscence through JA biosynthesis and signaling during the late stages of anther development. | Zheng Tong Tingting Dong Qiuhua Li Rui Wang Junna He Bo Hong | 2024 | Horticultural Plant Journal2024，10，1： | 0 |
| 4 | The transcriptional co-repressor SEED DORMANCY 4-LIKE(At SDR4L)promotes the embryonic-to-vegetative transition in Arabidopsis thaliana显示文摘Repression of embryonic traits during the seedto-seedling phase transition requires the inactivation of master transcription factors associated with embryogenesis.How the timing of such inactivation is controlled is unclear.Here,we report on a novel transcriptional corepressor,Arabidopsis thaliana SDR4L,that forms a feedback inhibition loop with the master transcription factors LEC1 and ABI3 to repress embryonic traits post-imbibition.LEC1 and ABI3 regulate their own expression by inducing AtSDR4L during mid to late embryogenesis.AtSDR4L binds to sites upstream of LEC1 and ABI4,and these transcripts are upregulated in Atsdr4l seedlings.Atsdr4 l seedlings phenocopy a LEC1 overexpressor.The embryonic traits of Atsdr4l can be partially rescued by impairing LEC1 or ABI3.The penetrance and expressivity of the Atsdr4l phenotypes depend on both developmental and external cues,demonstrating the importance of AtSDR4L in seedling establishment under suboptimal conditions. | Ting Wu Milad Alizadeh Bailan Lu Jinkui Cheng Ryan Hoy Miaoyu Bu Emma Laqua Dongxue Tang Junna He Dongeun Go Zhizhong Gong Liang Song | 2022 | Journal of Integrative Plant Biology2022，64，11： | 0 |
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