Results 1 to 10 of about 7,530 (183)

Insights into the Mechanism of Bovine Spermiogenesis Based on Comparative Transcriptomic Studies

Animals, 2021
To reduce subfertility caused by low semen quality and provide theoretical guidance for the eradication of human male infertility, we sequenced the bovine transcriptomes of round, elongated spermatids and epididymal sperms.
Xin Li, Chenying Duan, Ruyi Li, Dong Wang   +3 more
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Regulation of Miwi-mediated mRNA stabilization by Ck137956/Tssa is essential for male fertility

BMC Biology, 2023
Background Sperm is formed through spermiogenesis, a highly complex process involving chromatin condensation that results in cessation of transcription.
Yu Chen, Xiangzheng Zhang, Jiayin Jiang, Mengjiao Luo, Haixia Tu, Chen Xu, Huanhuan Tan, Xin Zhou, Hong Chen, Xudong Han, Qiuling Yue, Yueshuai Guo, Ke Zheng, Yaling Qi, Chenghao Situ, Yiqiang Cui, Xuejiang Guo   +16 more
doaj   +1 more source

Dynamic rearrangement and autophagic degradation of mitochondria during spermiogenesis in the liverwort Marchantia polymorpha

Cell Reports, 2022
Summary: Mitochondria change their morphology in response to developmental and environmental cues. During sexual reproduction, bryophytes produce spermatozoids with two mitochondria in the cell body.
Takuya Norizuki, Naoki Minamino, Miyuki Sato, Hirokazu Tsukaya, Takashi Ueda   +4 more
doaj   +1 more source

Autophagy regulates plastid reorganization during spermatogenesis in the liverwort Marchantia polymorpha

Frontiers in Plant Science, 2023
Autophagy is a highly conserved system that delivers cytoplasmic components to lysosomes/vacuoles. Plastids are also degraded through autophagy for nutrient recycling and quality control; however, the involvement of autophagic degradation of plastids in ...
Takuya Norizuki, Takuya Norizuki, Naoki Minamino, Miyuki Sato, Takashi Ueda, Takashi Ueda   +5 more
doaj   +1 more source

Association of the ubiquitin specific peptidase 9X -linked and Afadin expression patterns with sexual maturation in boar testis

Journal of Animal Science and Technology, 2021
Closely correlated expression patterns between ubiquitin specific peptidase 9X-linked (USP9X) and adherens junction formation factor (Afadin) in mouse testis development suggests that Usp9x regulates the ...
Sun-Young Baek, Seung-Hoon Lee, Youngshin Kim, Joon-Ki Hong, Eunseok Cho, Seungmin Ha, Kyungwoon Kim, Soojin Sa, Hakjae Chung   +8 more
doaj   +1 more source

Broad phosphorylation mediated by testis-specific serine/threonine kinases contributes to spermiogenesis and male fertility

Nature Communications, 2023
Genetic studies elucidate a link between testis-specific serine/threonine kinases (TSSKs) and male infertility in mammals, but the underlying mechanisms are unclear.
Xuedi Zhang, Ju Peng, Menghua Wu, Angyang Sun, Xiangyu Wu, Jie Zheng, Wangfei Shi, Guanjun Gao   +7 more
doaj   +1 more source

Ultrastructural, autoradiographic and electrophoretic examinations of Chara tomentosa spermiogenesis

Acta Societatis Botanicorum Poloniae, 2014
Ultrastructure of a spermatid nucleus changes many times during spermiogenesis. Condensed chromatin forms irregular clusters during phases I-II, a continuous ring adjacent to a nuclear envelope during phases III-V and a network occupying the whole ...
Maria Kwiatkowska, Andrzej Kaźmierczak, Katarzyna Popłońska   +2 more
doaj   +1 more source

Cytochemical and immunocytochemical studies of the localization of histones and protamine-type proteins in spermatids of Chara vulgaris and Chara tomentosa.

Folia Histochemica et Cytobiologica, 2008
Spermiogenesis in Chara algae, which has been divided into 10 phases (sp I-X), is similar to spermiogenesis in animals. The most important process during spermiogenesis in animals is remodeling of chromatin leading to "sleeping genome", being the result ...
Agnieszka Wojtczak, Katarzyna Popłońska, Maria Kwiatkowska, Andrzej Kaźmierczak   +3 more
doaj   +1 more source

Ultrastructures of spermatozoon tail in rice water weevil, Lissorhoptrus oryzophilus Kuschel (Coleoptera, Curculionidae)

浙江大学学报. 农业与生命科学版, 2008
Ultrastructures of spermatozoon tail in the rice water weevil, Lissorhoptrus oryzophilus, were observed via transmission electron microscopy at selected sperm developmental stages with the aim at clarifying spermiogenesis in this weevil.
HE Yan, JI Xiang-hua, JIANG Ming-xing, CHENG Jia-an   +3 more
doaj   +1 more source

Spermatogenesis without spermiogenesis in Laudakia caucasia (Reptilia: Agamidae): the role of hibernation [PDF]

Iranian Journal of Animal Biosystematics, 2007
During hibernation period from Mid October to Late March, we removed testis of Laudakia caucasia. Based on histological and statistical analyses we obtained two phases in spermatogenesis in this lizard as follows: (a) from October to December, in which ...
N. Rastegar-Pouyani, F. Torki
doaj   +1 more source