http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
AtMYB44 suppresses transcription of the late embryogenesis abundant protein gene <i>AtLEA4-5</i>
Nguyen, Nguyen Hoai,Nguyen, Chau Thi Thu,Jung, Choonkyun,Cheong, Jong-Joo Elsevier 2019 Biochemical and biophysical research communication Vol.511 No.4
<P><B>Abstract</B></P> <P>AtLEA4-5 is a member of the group 4 late embryogenesis abundant (LEA) proteins, which are involved in the tolerance of water deficit in <I>Arabidopsis thaliana</I>. Chromatin immunoprecipitation assays revealed that the transcription factor AtMYB44 bound directly to the <I>AtLEA4-5</I> gene promoter region under normal conditions, but was eliminated in response to osmotic stress (mannitol treatment). A quantitative reverse transcription PCR assay revealed that transcription of the <I>AtLEA4-5</I> gene was induced in response to either salt (salinity) or mannitol (osmosis) treatment. The abiotic stress-induced increase in <I>AtLEA4-5</I> transcripts was reduced in <I>35S:AtMYB44</I> transgenic plants, indicating that the transcription factor AtMYB44 represses gene transcription. More RNA polymerase II stalled at the transcription start site (TSS) of the <I>AtLEA4-5</I> gene loci under osmotic stress, but the increment was reduced in the <I>35S:AtMYB44</I> plants. Histones are evicted from the promoter region under osmotic stress; however, histone eviction was hampered in the <I>35S:AtMYB44</I> plants. Under osmotic stress, the acetylated histones remaining at the TSS region was significantly lower in the <I>35S:AtMYB44</I> plants compared with wild-type plants. These results indicate that AtMYB44 suppresses polymerase-mediated transcription of the <I>AtLEA4-5</I>.</P> <P><B>Highlights</B></P> <P> <UL> <LI> AtMYB44 binds to the <I>AtLEA4-5</I> gene promoter region under normal conditions. </LI> <LI> Osmotic stress eliminates AtMYB44 from the <I>AtLEA4-5</I> gene promoter. </LI> <LI> AtMYB44 suppresses polymerase-mediated transcription of <I>AtLEA4-5.</I> </LI> <LI> AtMYB44 reduces nucleosome acetylation in the <I>AtLEA4-5</I> TSS proximal region. </LI> </UL> </P>
Nguyen Thi Thu Hien,Nguyen Hoai Han,Cho Young-Sang 한국세라믹학회 2023 한국세라믹학회지 Vol.60 No.4
Nanostructured titania (TiO2) fibers such as nonporous, macroporous, hollow, and hollow macroporous fibers were successfully prepared by electrospinning using titanium diisopropoxide bis (acetylacetonate) (TDIP) as starting material. Hollow TiO2 fibers were fabricated using two syringe pumps and dual concentric nozzle to prepare hollow microstructure inside the fibrous materials. Oil was supplied to core of nozzle and polymeric mixture containing the titania precursor was injected into outer layer of nozzle. Then, oil from electro-spun fibers was removed by washing with organic solvent to obtain hollow microstructure. Macroporous hollow titania fibers could be also fabricated from spinning solution composed of the titania precursor and PS nanospheres as sacrificial templates. Thickness of fiber walls of macroporous hollow titania fibers became thinner from 425.5 to 353.5 nm, when flow rate of titania precursor solution was adjusted from 15 to 10 μL/min. SEM, XRD, and FT-IR analysis were employed to characterize morphologies, crystallinity, and compositions of the fibers, respectively. Photocatalytic removal of methylene blue under UV light illumination was performed using four different kinds of the titania fibers to compare their photocatalytic activity. Rate constant of the degradation reaction could be estimated from experimental data during photocatalytic degradation, assuming first-order kinetics. The rate constant of hollow titania fiber (0.0772 min−1) was estimated as the highest value among various kinds of the nanostructured fibers, showing the best photocatalytic ability for decomposition of organic dyes.
Cembranoid Diterpenes from the Soft Coral Lobophytum crassum and Their Anti-inflammatory Activities
Cuong, Nguyen Xuan,Thao, Nguyen Phuong,Luyen, Bui Thi Thuy,Ngan, Nguyen Thi Thanh,Thuy, Dinh Thi Thu,Song, Seok Bean,Nam, Nguyen Hoai,Kiem, Phan Van,Kim, Young Ho,Minh, Chau Van Pharmaceutical Society of Japan 2014 Chemical & pharmaceutical bulletin Vol.62 No.2
DO, Thi Thu Hien,NGUYEN, Thi Lan Anh,NGUYEN, Thi Hoai Phuong Korea Distribution Science Association 2022 The Journal of Asian Finance, Economics and Busine Vol.9 No.6
The study's goal is to determine the amount of climate change's impact on ethnic minority (EM) households' livelihoods, as well as their adaptability to climate change and long-term viability. The research was conducted in Vietnam's Northwestern Sub-region, where ethnic minorities account for more than half of the overall population. The study uses a combination of qualitative and quantitative methods based on a survey of 480 households in 04 provinces severely affected by climate change in the Northwest sub-region of Vietnam. The results show that: climate change (extreme weather events) occurs with increasing frequency, mainly affecting the life expectancy, health, and capital of households; Vulnerable groups (women, ethnic minorities) have a poor adaptive capacity and mainly suffer the consequences of shocks, are afraid to change their livelihoods; Microfinance plays an important role in enhancing the sustainability of livelihoods through increasing capital and financial assets and reducing the vulnerability of ethnic minority households. Finally, research has some solutions for microfinance - special credit specifically for ethnic minority households in the Northwest Sub-region: support for microfinance advice, home credit with transition orientations to adapt to climate change response and relieves its impact on the social lives.