A new mutation in the timing of autogamy in Paramecium tetraurelia

Content Provider	Semantic Scholar
Author	Komori, Rie Sato, Hiroaki Harumoto, Terue Takagi, Yoshiomi
Copyright Year	2005
Abstract	We have isolated a new type of Paramecium tetraurelia mutant, named rie-2, that has a long immaturity period until autogamy. We previously isolated such an autogamy mutant, designated rie-1. These two mutants had some additional common features such as dependence of the occurrence of autogamy on the temperature, involvement of a single recessive gene, lower fission rate and shorter clonal life span. However, rie-2 was considered a new type mutant distinguishable from rie-1 because of their different natures of temperature sensitivity. First, the temperature at which they resembled the wild-type phenotype was low (19 degrees C) in rie-2, although it was high (32 degrees C) in rie-1. Second, the clonal life span of rie-2 at 25 degrees C was similar to that of the wild-type, but it was extremely shorter at 32 degrees C than at 25 degrees C, although it was similarly shorter at both temperatures in rie-1. Third, the difference of the fission rate between mutant and wild-type was greater at 32 degrees C than at 25 degrees C in rie-2, although it was similar at both temperatures in rie-1. This report shows that a gene mutation to elongate the period until sexual maturation does not necessarily assure the long life span.
Starting Page	752
Ending Page	759
Page Count	8
File Format	PDF HTM / HTML
DOI	10.1016/j.mad.2005.01.010
Alternate Webpage(s)	https://api.elsevier.com/content/article/pii/S0047637405000436
Alternate Webpage(s)	https://www.sciencedirect.com/science/article/pii/S0047637405000436?dgcid=api_sd_search-api-endpoint
PubMed reference number	15888330
Alternate Webpage(s)	https://doi.org/10.1016/j.mad.2005.01.010
Journal	Medline
Volume Number	126
Journal	Mechanisms of Ageing and Development
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article