Asexual metazoans undergo senescence.
نویسندگان
چکیده
منابع مشابه
Telomerase deficiency in a colonial ascidian after prolonged asexual propagation.
In organisms that propagate by agametic cloning, the parental body is the reproductive unit and fitness increases with clonal size, so that colonial metazoans, despite lack of experimental data, have been considered potentially immortal. Using asexual propagation rate as a measure of somatic performance, and telomerase activity and relative telomere length as molecular markers of senescence, ol...
متن کاملRat Notochordal Cells Undergo Premature Stress-Induced Senescence by High Glucose
STUDY DESIGN In vitro cell culture. PURPOSE The purpose of the study was to investigate the effect of high glucose on premature stress-induced senescence of rat notochordal cells. OVERVIEW OF LITERATURE Glucose-mediated increase of oxidative stress is a major causative factor for the development of diseases associated with diabetes mellitus such as senescence. However, no information is ava...
متن کاملEcological Epigenetics in Marine Metazoans
In this horizon scan article, I review the emerging area of ecological epigenetics in marine animals with studies of DNA methylation as the primary focus. Epigenetic mechanisms such as DNA methylation have the capacity to create rapid changes in phenotypic plasticity. Epigenetic modifications of DNA are mechanisms that modify gene expression, and may do so in marine animals in an environmentall...
متن کاملEvolution of synonymous codon usage in metazoans.
The vast amount of data generated by genome projects and the recent development of population genetics models make comparative sequence analyses a very powerful approach with which to detect the footprints of selection. Studies on synonymous codon usage show that traits with minuscule phenotypic effects can be molded by natural selection. But variations in mutation patterns and processes of bia...
متن کاملmRNA localization in metazoans: A structural perspective
Asymmetric localization of mRNAs is a widespread gene regulatory mechanism that is crucial for many cellular processes. The localization of a transcript involves multiple steps and requires several protein factors to mediate transport, anchoring and translational repression of the mRNA. Specific recognition of the localizing transcript is a key step that depends on linear or structured localiza...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Proceedings of the National Academy of Sciences
سال: 1992
ISSN: 0027-8424,1091-6490
DOI: 10.1073/pnas.89.20.9920