Stochasticity and stereotypy in the Ciona notochord
نویسندگان
چکیده
منابع مشابه
Distinct cytoskeleton populations and extensive crosstalk control Ciona notochord tubulogenesis.
Cell elongation is a fundamental process that allows cells and tissues to adopt new shapes and functions. During notochord tubulogenesis in the ascidian Ciona intestinalis, a dramatic elongation of individual cells takes place that lengthens the notochord and, consequently, the entire embryo. We find a novel dynamic actin- and non-muscle myosin II-containing constriction midway along the antero...
متن کاملMutations affecting tail and notochord development in the ascidian Ciona savignyi.
Ascidians are among the most distant chordate relatives of the vertebrates. However, ascidians share many features with vertebrates including a notochord and hollow dorsal nerve cord. A screen for N-ethyl-N-nitrosourea (ENU)-induced mutations affecting early development in the ascidian Ciona savignyi resulted in the isolation of a number of mutants including the complementing notochord mutants ...
متن کاملTail morphogenesis in the ascidian, Ciona intestinalis, requires cooperation between notochord and muscle.
We present evidence that notochord and muscle differentiation are crucial for morphogenesis of the ascidian tail. We developed a novel approach for embryological manipulation of the developing larval tissues using a simple method to introduce DNA into Ciona intestinalis and the several available tissue-specific promoters. With such promoters, we misexpressed the Xenopus homeobox gene bix in not...
متن کاملFGF3 in the floor plate directs notochord convergent extension in the Ciona tadpole.
Convergent extension (CE) is the narrowing and lengthening of an embryonic field along a defined axis. It underlies a variety of complex morphogenetic movements, such as mesoderm elongation and neural tube closure in vertebrate embryos. Convergent extension relies on the same intracellular molecular machinery that directs planar cell polarity (PCP) in epithelial tissues, including non-canonical...
متن کاملThe snail repressor establishes a muscle/notochord boundary in the Ciona embryo.
Previous studies have identified a minimal 434 bp enhancer from the promoter region of the Ciona Brachyury gene (Ci-Bra), which is sufficient to direct a notochord-specific pattern of gene expression. Here we present evidence that a Ciona homolog of snail (Ci-sna) encodes a repressor of the Ci-Bra enhancer in the tail muscles. DNA-binding assays identified four Ci-Sna-binding sites in the Ci-Br...
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: Developmental Biology
سال: 2015
ISSN: 0012-1606
DOI: 10.1016/j.ydbio.2014.11.016