Research news on Acclimatization

Acclimatization is a reversible physiological and sometimes morphological adjustment of an organism to complex, naturally varying environmental conditions, occurring within an individual’s lifetime without changes to the genome. It involves modulation of existing cellular and systemic pathways—such as alterations in gene expression, enzyme activity, membrane composition, hormonal signaling, and organ function—to maintain homeostasis under new temperature, oxygen, salinity, photoperiod, or other abiotic regimes. Distinguished from genetic adaptation and laboratory acclimation, acclimatization typically proceeds over days to weeks, is often phenotypically plastic and graded, and its magnitude and limits critically influence organismal performance, stress tolerance, and ecological distribution.

Under crushing hypergravity, fruit flies adapt—and recover

Expose an animal to extreme physical stress, and the expectation is simple: It will break down. But when UC Riverside scientists subjected fruit flies to forces many times stronger than Earth's gravity—a condition called ...

Temperature shifts change plant proteins that power photosynthesis

Humans adjust to changes in temperature by putting on a sweater or taking off layers. Plants adjust to temperature changes, in part, by switching the way they express the protein that performs the critical first step of photosynthesis, ...

Tropical geckos in Australia are more adaptable than we thought

Earth is teeming with life: creatures big and small have spread and adapted to vastly different environments. Many animals can also change their physiology—how their bodies function—in response to local fluctuations. Just ...