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Growth rate affects the responses of the green alga T etraselmis suecica to external perturbations
Author(s) -
FANESI ANDREA,
RAVEN JOHN A.,
GIORDANO MARIO
Publication year - 2014
Publication title -
plant, cell and environment
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.646
H-Index - 200
eISSN - 1365-3040
pISSN - 0140-7791
DOI - 10.1111/pce.12176
Subject(s) - perturbation (astronomy) , growth rate , homeostasis , energy homeostasis , biology , chemistry , physics , endocrinology , mathematics , obesity , geometry , quantum mechanics
We hypothesized that the duration of the perturbation relative to the reproduction rate influences the response mode to external perturbations and the degree of (organic) compositional homeostasis. Our findings are consistent with this hypothesis. When different growth rates were imposed to cells of the same species, the degree of compositional homeostasis following an external perturbation was significantly higher in the cells with slower growth rate. The ability to maintain a constant composition was however vinculated by the availability of sufficient energy.