Search

Your search keyword '"Yu, Xiao‐Qiang"' showing total 729 results
Start Over Author "Yu, Xiao‐Qiang"
729 results on '"Yu, Xiao‐Qiang"'

19. Compact source of narrow-band counterpropagating polarization-entangled photon pairs using a single dual-periodically poled crystal

Author

Gong, Yan-Xiao, Xie, Zhen-Da, Xu, Ping, Yu, Xiao-Qiang, Xue, Peng, and Zhu, Shi-Ning

Subjects
Quantum Physics
Abstract

We propose a scheme for the generation of counterpropagating polarization-entangled photon pairs from a dual-periodically poled crystal. Compared with the usual forward-wave type source, this source, in the backward-wave way, has a much narrower bandwidth. With a 2-cm-long bulk crystal, the bandwidths of the example sources are estimated to be 3.6 GHz, and the spectral brightnesses are more than 100 pairs/(s GHz mW). Two concurrent quasi-phase-matched spontaneous parametric down-conversion processes in a single crystal enable our source to be compact and stable. This scheme does not rely on any state projection and applies to both degenerate and non-degenerate cases, facilitating applications of the entangled photons., Comment: 6 pages, 1 figure

Published
2011
Full Text
View/download PDF

20. Functional Analysis of Forkhead Transcription Factor Fd59a in the Spermatogenesis of Drosophila melanogaster.

Author

Tang, Ting, Pei, Mengyuan, Xiao, Yanhong, Deng, Yingshan, Lu, Yuzhen, Yu, Xiao-Qiang, Wen, Liang, and Hu, Qihao

Subjects
STEM cell niches, SEMINAL vesicles, ANIMAL reproduction, GERM cells, INSECT reproduction, FORKHEAD transcription factors
Abstract

Simple Summary: Spermatogenesis, which is regulated by many different genes, is a conserved process across species to produce mature sperm for animal reproduction. Fox transcription factors can bind to DNA sequences in the promoters to regulate gene expression. FoxD subfamily members are mainly involved in metabolism and early organ development. In Drosophila melanogaster, FoxD subfamily member Fd59a may regulate the development of the nervous system and control the egg-laying behavior of females. However, the functions of insect FoxD members are still largely unknown. In this study, we investigated the role of Fd59a in the spermatogenesis of Drosophila. We found that mutations in Fd59a caused swelling of the apical region in the testis, resulting in fewer mature sperm in the seminal vesicle and significantly lower fertility of Fd59a mutant males compared to the control flies. We also found that the homeostasis of the testis stem cell niche in Fd59a mutant and RNAi flies was disrupted, causing increased apoptosis of sperm bundles. RNA sequencing and qRT-PCR results suggested that Fd59a can regulate the expression of genes related to reproductive process and cell death. Our collective results indicated that Fd59a plays a key role in Drosophila spermatogenesis, which will help to understand the role of FoxD members in insect spermatogenesis. Spermatogenesis is critical for insect reproduction and is regulated by many different genes. In this study, we found that Forkhead transcription factor Fd59a functions as a key factor in the spermatogenesis of Drosophila melanogaster. Fd59a contains a conversed Forkhead domain, and it is clustered to the FoxD subfamily with other FoxD members from some insect and vertebrate species. Mutations in Fd59a caused swelling in the apical region of the testis. More importantly, fewer mature sperm were present in the seminal vesicle of Fd59a mutant flies compared to the control flies, and the fertility of Fd59a2/2 mutant males was significantly lower than that of the control flies. Immunofluorescence staining showed that the homeostasis of the testis stem cell niche in Fd59a2/2 mutant and Fd59a RNAi flies was disrupted and the apoptosis of sperm bundles was increased. Furthermore, results from RNA sequencing and qRT-PCR suggested that Fd59a can regulate the expression of genes related to reproductive process and cell death. Taken together, our results indicated that Fd59a plays a key role in the spermatogenesis of Drosophila. [ABSTRACT FROM AUTHOR]

Published
2024
Full Text
View/download PDF

30. Identification and functional analysis of CG3526 in spermatogenesis of Drosophila melanogaster.

Author

Hu, Qihao, Xiao, Yanhong, Wei, Runnan, Tang, Ting, Wen, Liang, Lu, Yuzhen, and Yu, Xiao‐Qiang

Abstract

Spermatogenesis is a critical part of reproduction in insects; however, its molecular mechanism is still largely unknown. In this study, we identified a testis‐specific gene CG3526 in Drosophila melanogaster. Bioinformatics analysis showed that CG3526 contains a zinc binding domain and 2 C2H2 type zinc fingers, and it is clustered to the vertebrate really interesting new gene (RING) family E3 ubiquitin‐protein ligases. When CG3526 was knocked down by RNA interference (RNAi), the testis became much smaller in size, and the apical tip exhibited a sharp and thin end instead of the blunt and round shape in the control testis. More importantly, compared to the control flies, only a few mature sperm were present in the seminal vesicle of C587‐Gal4 > CG3526 RNAi flies. Immunofluorescence staining of the testis from CG3526 RNAi flies showed that the homeostasis of testis stem cell niche was disrupted, cell distribution in the apical tip was scattered, and the process of spermatogenesis was not completed. Furthermore, we found that the phenotype of CG3526 RNAi flies' testis was similar to that of testis of Stat92E RNAi flies, the expression level of CG3526 was significantly downregulated in the Stat92EF06346 mutant flies, and the promoter activity of CG3526 was upregulated by STAT92E. Taken together, our results indicated that CG3526 is a downstream effector gene in the JAK‐STAT signaling pathway that plays a key role in the spermatogenesis of Drosophila. [ABSTRACT FROM AUTHOR]

Published
2024
Full Text
View/download PDF

34. Multifaceted biological insights from a draft genome sequence of the tobacco hornworm moth, Manduca sexta

Author

Kanost, Michael R., Arrese, Estela L., Cao, Xiaolong, Chen, Yun-Ru, Chellapilla, Sanjay, Goldsmith, Marian R., Grosse-Wilde, Ewald, Heckel, David G., Herndon, Nicolae, Jiang, Haobo, Papanicolaou, Alexie, Qu, Jiaxin, Soulages, Jose L., Vogel, Heiko, Walters, James, Waterhouse, Robert M., Ahn, Seung-Joon, Almeida, Francisca C., An, Chunju, Aqrawi, Peshtewani, Bretschneider, Anne, Bryant, William B., Bucks, Sascha, Chao, Hsu, Chevignon, Germain, Christen, Jayne M., Clarke, David F., Dittmer, Neal T., Ferguson, Laura C.F., Garavelou, Spyridoula, Gordon, Karl H.J., Gunaratna, Ramesh T., Han, Yi, Hauser, Frank, He, Yan, Heidel-Fischer, Hanna, Hirsh, Ariana, Hu, Yingxia, Jiang, Hongbo, Kalra, Divya, Klinner, Christian, König, Christopher, Kovar, Christie, Kroll, Ashley R., Kuwar, Suyog S., Lee, Sandy L., Lehman, Rüdiger, Li, Kai, Li, Zhaofei, Liang, Hanquan, Lovelace, Shanna, Lu, Zhiqiang, Mansfield, Jennifer H., McCulloch, Kyle J., Mathew, Tittu, Morton, Brian, Muzny, Donna M., Neunemann, David, Ongeri, Fiona, Pauchet, Yannick, Pu, Ling-Ling, Pyrousis, Ioannis, Rao, Xiang-Jun, Redding, Amanda, Roesel, Charles, Sanchez-Gracia, Alejandro, Schaack, Sarah, Shukla, Aditi, Tetreau, Guillaume, Wang, Yang, Xiong, Guang-Hua, Traut, Walther, Walsh, Tom K., Worley, Kim C., Wu, Di, Wu, Wenbi, Wu, Yuan-Qing, Zhang, Xiufeng, Zou, Zhen, Zucker, Hannah, Briscoe, Adriana D., Burmester, Thorsten, Clem, Rollie J., Feyereisen, René, Grimmelikhuijzen, Cornelis J.P., Hamodrakas, Stavros J., Hansson, Bill S., Huguet, Elisabeth, Jermiin, Lars S., Lan, Que, Lehman, Herman K., Lorenzen, Marce, Merzendorfer, Hans, Michalopoulos, Ioannis, Morton, David B., Muthukrishnan, Subbaratnam, Oakeshott, John G., Palmer, Will, Park, Yoonseong, Passarelli, A. Lorena, Rozas, Julio, Schwartz, Lawrence M., Smith, Wendy, Southgate, Agnes, Vilcinskas, Andreas, Vogt, Richard, Wang, Ping, Werren, John, Yu, Xiao-Qiang, Zhou, Jing-Jiang, Brown, Susan J., Scherer, Steven E., Richards, Stephen, and Blissard, Gary W.

Published
2016
Full Text
View/download PDF

Catalog

Books, media, physical & digital resources
See catalog results