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151.
Isolation and functional analysis of Arabidopsis stress-inducible NAC transcription factors that bind to a drought-responsive cis-element in the early responsive to dehydration stress 1 promoter 总被引:30,自引:0,他引:30 下载免费PDF全文
Tran LS Nakashima K Sakuma Y Simpson SD Fujita Y Maruyama K Fujita M Seki M Shinozaki K Yamaguchi-Shinozaki K 《The Plant cell》2004,16(9):2481-2498
152.
Takeshi Urao Takeshi Katagiri Tsuyoshi Mizoguchi Kazuko Yamaguchi-Shinozaki Nobuaki Hayashida Kazuo Shinozaki 《Molecular & general genetics : MGG》1994,244(4):331-340
Two cDNA clones, AATCDPK1 and cATCDPK2, encoding Ca2+-dependent, calmodulin-independent protein kinases (CDPK) were cloned from Arabidopsis thaliana and their nucleotide sequences were determined. Northern blot analysis indicated that the mRNAs corresponding to the ATCDPK1 and ATCDPK2 genes are rapidly induced by drought and high-salt stress but not by low-temperature stress or heat stress. Treatment of Arabidopsis plants with exogenous abscisic acid (ABA) had no effect on the induction of ATCDPK1 or ATCDPK2. These findings suggest that a change in the osmotic potential of the environment can serve as a trigger for the induction of ATCDPK1 and ATCDPK2. Putative proteins encoded by ATCDPK1 and ATCDPK2 which contain open reading frames of 1479 and 1488 bp, respectively, are designated ATCDPK1 and ATCDPK2 and show 52% identity at the amino acid sequence level. ATCDPK1 and ATCDPK2 exhibit significant similarity to a soybean CDPK (51 % and 73%, respectively). Both proteins contain a catalytic domain that is typical of serine/threonine protein kinases and a regulatory domain that is homologous to the Ca2+-binding sites of calmodulin. Genomic Southern blot analysis suggests the existence of a few additional genes that are related to ATCDPK1 and ATCDPK2 in the Arabidopsis genome. The ATCDPK2 protein expressed in Escherichia coli was found to phosphorylate casein and myelin basic protein preferentially, relative to a histone substrate, and required Ca2+ for activation. 相似文献
153.
Genome-Wide Analysis of Two-Component Systems and Prediction of Stress-Responsive Two-Component System Members in Soybean 总被引:1,自引:0,他引:1
Keiichi Mochida Takuhiro Yoshida Tetsuya Sakurai Kazuko Yamaguchi-Shinozaki Kazuo Shinozaki Lam-Son Phan Tran 《DNA research》2010,17(5):303-324
In plants, the two-component systems (TCSs) play important roles in regulating diverse biological processes, including responses to environmental stress stimuli. Within the soybean genome, the TCSs consist of at least 21 histidine kinases, 13 authentic and pseudo-phosphotransfers and 18 type-A, 15 type-B, 3 type-C and 11 pseudo-response regulator proteins. Structural and phylogenetic analyses of soybean TCS members with their Arabidopsis and rice counterparts revealed similar architecture of their TCSs. We identified a large number of closely homologous soybean TCS genes, which likely resulted from genome duplication. Additionally, we analysed tissue-specific expression profiles of those TCS genes, whose data are available from public resources. To predict the putative regulatory functions of soybean TCS members, with special emphasis on stress-responsive functions, we performed comparative analyses from all the TCS members of soybean, Arabidopsis and rice and coupled these data with annotations of known abiotic stress-responsive cis-elements in the promoter region of each soybean TCS gene. Our study provides insights into the architecture and a solid foundation for further functional characterization of soybean TCS elements. In addition, we provide a new resource for studying the conservation and divergence among the TCSs within plant species and/or between plants and other organisms. 相似文献
154.
Functional analysis of the Hikeshi-like protein and its interaction with HSP70 in Arabidopsis 总被引:1,自引:0,他引:1
Shinya Koizumi Naohiko Ohama Junya Mizoi Kazuo Shinozaki Kazuko Yamaguchi-Shinozaki 《Biochemical and biophysical research communications》2014
Heat shock proteins (HSPs) refold damaged proteins and are an essential component of the heat shock response. Previously, the 70 kDa heat shock protein (HSP70) has been reported to translocate into the nucleus in a heat-dependent manner in many organisms. In humans, the heat-induced translocation of HSP70 requires the nuclear carrier protein Hikeshi. In the Arabidopsis genome, only one gene encodes a protein with high homology to Hikeshi, and we named this homolog Hikeshi-like (HKL) protein. In this study, we show that two Arabidopsis HSP70 isoforms accumulate in the nucleus in response to heat shock and that HKL interacts with these HSP70s. Our histochemical analysis revealed that HKL is predominantly expressed in meristematic tissues, suggesting the potential importance of HKL during cell division in Arabidopsis. In addition, we show that HKL regulates HSP70 localization, and HKL overexpression conferred thermotolerance to transgenic Arabidopsis plants. Our results suggest that HKL plays a positive role in the thermotolerance of Arabidopsis plants and cooperatively interacts with HSP70. 相似文献
155.
Patricia T. Honna Renata Fuganti-Pagliarini Leonardo C. Ferreira Mayla D. C. Molinari Silvana R. R. Marin Maria C. N. de Oliveira José R. B. Farias Norman Neumaier Liliane M. Mertz-Henning Norihito Kanamori Kazuo Nakashima Hironori Takasaki Kaoru Urano Kazuo Shinozaki Kazuko Yamaguchi-Shinozaki Janete A. Desidério Alexandre L. Nepomuceno 《Molecular breeding : new strategies in plant improvement》2016,36(11):157
156.
Functional Analysis of an Arabidopsis thaliana Abiotic Stress-inducible Facilitated Diffusion Transporter for Monosaccharides 总被引:2,自引:0,他引:2
Kohji Yamada Yuriko Osakabe Junya Mizoi Kazuo Nakashima Yasunari Fujita Kazuo Shinozaki Kazuko Yamaguchi-Shinozaki 《The Journal of biological chemistry》2010,285(2):1138-1146
Sugars play indispensable roles in biological reactions and are distributed into various tissues or organelles via transporters in plants. Under abiotic stress conditions, plants accumulate sugars as a means to increase stress tolerance. Here, we report an abiotic stress-inducible transporter for monosaccharides from Arabidopsis thaliana that is termed ESL1 (ERD six-like 1). Expression of ESL1 was induced under drought and high salinity conditions and with exogenous application of abscisic acid. Promoter analyses using β-glucuronidase and green fluorescent protein reporters revealed that ESL1 is mainly expressed in pericycle and xylem parenchyma cells. The fluorescence of ESL1-green fluorescent protein-fused protein was detected at tonoplast in transgenic Arabidopsis plants and tobacco BY-2 cells. Furthermore, alanine-scanning mutagenesis revealed that an N-terminal LXXXLL motif in ESL1 was essential for its localization at the tonoplast. Transgenic BY-2 cells expressing mutated ESL1, which was localized at the plasma membrane, showed an uptake ability for monosaccharides. Moreover, the value of Km for glucose uptake activity of mutated ESL1 in the transgenic BY-2 cells was extraordinarily high, and the transport activity was independent from a proton gradient. These results indicate that ESL1 is a low affinity facilitated diffusion transporter. Finally, we detected that vacuolar invertase activity was increased under abiotic stress conditions, and the expression patterns of vacuolar invertase genes were similar to that of ESL1. Under abiotic stress conditions, ESL1 might function coordinately with the vacuolar invertase to regulate osmotic pressure by affecting the accumulation of sugar in plant cells. 相似文献
157.
The abiotic stress-responsive NAC-type transcription factor OsNAC5 regulates stress-inducible genes and stress tolerance in rice 总被引:2,自引:0,他引:2
158.
H. Mitsui K. Yamaguchi-Shinozaki K. Shinozaki K. Nishikawa H. Takahashi 《Molecular & general genetics : MGG》1993,238(3):362-368
A gene family, designated kat, has been characterized in Arabidopsis thaliana by genomic Southern hybridization and nucleotide sequencing analysis. The kat gene family includes at least five members, named katA, katB, katC, katD and katE, whose products share appreciable sequence similarities in their presumptive ATP-binding and microtubule-binding motifs with known kinesin-like proteins. The carboxyl-terminal region of the KatA protein deduced from the nucleotide sequence of the cDNA clone has considerable homology with the mechanochemical motor domain of the kinesin heavy chain. The predicted secondary structure of the KatA protein indicates two globular domains separated by a long a helical coiled coil with heptad repeat structures, such as are commonly found in kinesin-like proteins. 相似文献
159.
160.