Results 31 to 40 of about 3,968 (166)

Sub-minute Phosphoregulation of Cell Cycle Systems during Plasmodium Gamete Formation

Cell Reports, 2017
Summary: The transmission of malaria parasites to mosquitoes relies on the rapid induction of sexual reproduction upon their ingestion into a blood meal. Haploid female and male gametocytes become activated and emerge from their host cells, and the males
Brandon M. Invergo, Mathieu Brochet, Lu Yu, Jyoti Choudhary, Pedro Beltrao, Oliver Billker   +5 more
doaj   +1 more source

Natural depletion of histone H1 in sex cells causes DNA demethylation, heterochromatin decondensation and transposon activation

eLife, 2019
Transposable elements (TEs), the movement of which can damage the genome, are epigenetically silenced in eukaryotes. Intriguingly, TEs are activated in the sperm companion cell – vegetative cell (VC) – of the flowering plant Arabidopsis thaliana. However,
Shengbo He, Martin Vickers, Jingyi Zhang, Xiaoqi Feng   +3 more
doaj   +1 more source

Characterization of genes encoding poly(A) polymerases in plants: evidence for duplication and functional specialization. [PDF]

PLoS ONE, 2009
BACKGROUND:Poly(A) polymerase is a key enzyme in the machinery that mediates mRNA 3' end formation in eukaryotes. In plants, poly(A) polymerases are encoded by modest gene families.
Lisa R Meeks, Balasubrahmanyam Addepalli, Arthur G Hunt   +2 more
doaj   +1 more source

Repetitive DNA as marker for the study of male gametogenesis in higher plants. I. Analysis in some species ofTradescantiaandNarcissus [PDF]

Caryologia, 1997
SUMMARYThe use of heterochromatic regions, containing moderately repetitive DNA as markers, has allowed to follow the course of development of the generative and vegetative nuclei in the pollen grains of some species of Tradescantia and Narcissus.
P. Bassi, Stefano Suzzi, Canio G. Vosa
openaire   +2 more sources

Chromatin dynamics during plant sexual reproduction

Frontiers in Plant Science, 2014
Plants have the remarkable ability to establish new cell fates throughout their life cycle, by contrast to most animals that define all cell lineages during embryogenesis.
Wenjing eShe, Célia eBaroux
doaj   +1 more source

Male gametogenesis in flowering plants

Frontiers in Sustainable Food Systems
The life cycles of plants are characterized by significant alternations between the diploid sporophytic and the haploid gametophytic generations. Meiosis and fertilization are the prerequisites for achieving the alternation of generations. Diploid sporophytes undergo meiosis to produce haploid gametes, and male–female gametes fuse (double fertilization)
Dan-Lu Cui, Chun-Xia Xu, Ping Wang, Tian-Ying Gao, Bo Wang, Tian-Ying Yu   +5 more
openaire   +2 more sources

A Novel Imprinted Gene NUWA Controls Mitochondrial Function in Early Seed Development in Arabidopsis. [PDF]

PLoS Genetics, 2017
Imprinted genes display biased expression of paternal and maternal alleles and are only found in mammals and flowering plants. Compared to several hundred imprinted genes that are functionally characterized in mammals, very few imprinted genes were ...
Shan He, Yan Sun, Qian Yang, Xiangyu Zhang, Qingpei Huang, Peng Zhao, Mengxiang Sun, Jingjing Liu, Weiqiang Qian, Genji Qin, Hongya Gu, Li-Jia Qu   +11 more
doaj   +1 more source

EIF5A Couples Translational Control With Transcriptional Reprogramming Through Chromocenter Reorganization During Spermiogenesis

Advanced Science, EarlyView.
The translation factor Eukaryotic translation initiation factor 5A (eIF5A) is essential for male fertility in mice. It supports the translation of proteins crucial for heterochromatin organization and acrosome formation. eIF5A deficiency disrupts chromocenter integrity, increases chromatin accessibility, and causes transcriptional dysregulation ...
Yuling Cai, Tongtong Li, Qian Fang, Ziyou Bao, Feng Kong, Huitao Qi, Hanzhen Li, Mingyu Zhang, Wei Wang, Yongxia Guan, Wenbo Liu, Xiangfeng Chen, Zi‐Jiang Chen, Xiaohua Jiang, Xin Wang, Hongbin Liu   +15 more
wiley   +1 more source

NOF1 encodes an Arabidopsis protein involved in the control of rRNA expression. [PDF]

PLoS ONE, 2010
The control of ribosomal RNA biogenesis is essential for the regulation of protein synthesis in eukaryotic cells. Here, we report the characterization of NOF1 that encodes a putative nucleolar protein involved in the control of rRNA expression in ...
Erwana Harscoët, Bertrand Dubreucq, Jean-Christophe Palauqui, Loïc Lepiniec   +3 more
doaj   +1 more source

Cytotoxicity of Plant Extract Origanum syriacum on Gametogenesis of Two Terrestrial Slugs, Using TEM [PDF]

Journal of Cytology & Histology, 2014
The present study includes ultrastructural aspects of molluscicidal effects of wild botanic aqueous extract, namely Za’ater plant (Origanum syriacum) on the gametogenesis of two terrestrial slugs, giant grey slug Limax maximus and tree slug L. marginatus. L. marginatus was more susceptible to this plant than L.
openaire   +1 more source