Results 51 to 60 of about 19,844 (294)

Ecological Adaptation Mechanisms Underlying Successful Plant Reproduction

Advanced Science, EarlyView.
During floral induction, various environmental and endogenous signals converge to regulate the florigen protein, which is transported from leaves to the SAM to initiate flowering. Within the SAM, a complex network of receptor kinases and small peptides orchestrates floral development with high spatiotemporal precision.
Hang Zhao, Shenghui Huo, Yue Xing, Shuxin Zhang, Guilin Li, Yihui Liu, Chongyang Jin, Fuguang Li, Xiaoyang Ge   +8 more
wiley   +1 more source

Cannibalism and protective behavior of eggs in Arctic charr (Salvelinus alpinus)

Ecology and Evolution, 2021
From video recordings of spawning events, we quantified protective and cannibalistic behavior of Arctic charr occurring immediately after spawning. The number of fish cannibalizing on stray eggs was examined regarding (a) whether more than one male shed ...
Marilena Frye, Torvald B. Egeland, Jarle Tryti Nordeide, Ivar Folstad   +3 more
doaj   +1 more source

Hydrodynamic propulsion of human sperm [PDF]

, 2009
The detailed fluid mechanics of sperm propulsion are fundamental to our understanding of reproduction. In this paper, we aim to model a human sperm swimming in a microscope slide chamber.
Green, Richard B., Cannon, R.M., Pacey, A.A., Gillies, E.A., Gillies, Eric A., Green, R.B., Pacey, Allan A.; id_orcid, Cannon, Richard M.   +7 more
core   +1 more source

The Landscape and Regulation of Histone Crotonylation in Mammalian Gametes and Early Embryos

Advanced Science, EarlyView.
Histone crotonylation undergoes a genome‐wide transition from broad domains to canonical narrow peaks during minor zygotic genome activation (ZGA). This remodeling is required for proper major ZGA and blastocyst formation. Disruption of this transition by transcriptional inhibition, metabolic perturbation, or HDAC1 dysfunction impairs embryonic ...
Shenli Yuan, Yelian Yan, Yalin Liang, Kanghua Zhong, Zhican Fu, Xiaobo Wang, Chao Liu, Tao Huang, Keliang Wu   +8 more
wiley   +1 more source

Male scorpionflies assess the amount of rival sperm transferred by females' previous mates

, 2007
Engqvist L. Male scorpionflies assess the amount of rival sperm transferred by females' previous mates. Evolution. 2007;61(6):1489-1494.Theory predicts that when sperm compete numerically, selection will favor males who vary the number of sperm they ...
Engqvist, Leif ; https://orcid.org/
core   +1 more source

The bold and the sperm: positive association between boldness and sperm number in the guppy [PDF]

Royal Society Open Science, 2019
Assessing the consequences of personality traits on reproductive success is one of the most important challenges in personality studies and critical to understand the evolutionary implications of behavioural variability among animals.
Clelia Gasparini, Elizabeth M. Speechley, Giovanni Polverino   +2 more
doaj   +1 more source

Sexual Conflict and Sperm Competition [PDF]

Cold Spring Harbor Perspectives in Biology, 2014
Traits that increase a male's fertilization success during sperm competition can be harmful to females and therefore represent a source of sexual conflict. In this review, we consider the variety of male adaptations to sperm competition (MASC) that may give rise to sexual conflict-including mate guarding, prolonged copulations, the transfer of large ...
Dominic A, Edward, Paula, Stockley, David J, Hosken   +2 more
openaire   +2 more sources

Aptamer‐Targeted PrPC Drives Colorectal Cancer Metastasis via a LYN‐STAT3 Complex and Enables Liquid Biopsy Detection

Advanced Science, EarlyView.
The aptamer WHY‐3E identifies PrPC as a CRC driver. Stabilized by USP18, endocytosed PrPC forms a LYN/STAT3 complex, upregulating MSN transcription to promote metastasis. Crucially, WHY‐3E sensitively detects PrPC‐positive circulating exosomes, establishing a robust theoretical foundation for non‐invasive clinical diagnostics.
Chunlin Wang, Hongyu Wu, Chaojing Zheng, Hao Zhang, Xiaoqiu Wu, Jiaqi Wang, Zewen Chang, Jun Xiang, Yunxiao Liu, Chenkai Zhang, Yuliuming Wang, Hao Jiang, Yuchen Zhong, Jun Luo, Ying Chen, NaNa Zhang, Weiyuan Zhang, Ziming Yuan, ChaoXia Zou, Weihong Tan, Meng Wang, Hanqing Hu, Tao Bing, Guiyu Wang   +23 more
wiley   +1 more source

The KIF6‐RBP Complex Orchestrates mRNA Transport Required for Sperm Flagellar Assembly

Advanced Science, EarlyView.
Two homozygous deleterious KIF6 variants are identified in unrelated men with impaired sperm motility. Mouse models and multi‐omics analyses reveal that KIF6 cooperates with the RNA‐binding proteins FMRP and FXR1 to deliver mRNAs essential for sperm flagellar assembly, linking disrupted mRNA transport to reduced abundance of key structural and ...
Chunbo Xie, Sibing Yi, Xinle Lin, Shen Zhang, Weili Wang, Shimin Yuan, Lanlan Meng, Yong Li, Chen Tan, Chunjia Wei, Yanyan Yu, Yaoqiong Liang, Huan Zhang, Liang Hu, Guangxiu Lu, Wenbin He, Qianjun Zhang, Juan Du, Ge Lin, Chaofeng Tu, Yue‐Qiu Tan   +20 more
wiley   +1 more source

Consistent paternity skew through ontogeny in Peron's tree frog (Litoria peronii). [PDF]

PLoS ONE, 2009
BACKGROUND:A large number of studies in postcopulatory sexual selection use paternity success as a proxy for fertilization success. However, selective mortality during embryonic development can lead to skews in paternity in situations of polyandry and ...
Craig D H Sherman, Erik Wapstra, Mats Olsson   +2 more
doaj   +1 more source