Accumulation of free amino acids during exposure to drought in three springtail species

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60077344%3A_____%2F15%3A00462353" target="_blank" >RIV/60077344:_____/15:00462353 - isvavai.cz</a>

Result on the web

<a href="http://www.sciencedirect.com/science/article/pii/S0022191015001912" target="_blank" >http://www.sciencedirect.com/science/article/pii/S0022191015001912</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.jinsphys.2015.09.005" target="_blank" >10.1016/j.jinsphys.2015.09.005</a>

Result language

angličtina

Original language name

Accumulation of free amino acids during exposure to drought in three springtail species

Original language description

Springtails are closely related to insects, but they differ from these with respect to water balance, in particular because springtails are small and have high integumental permeability to water. Here we report a series of experiments addressing the dynamics of osmoregulation, water content and accumulation of free amino acids (FAAs) in three springtail species during exposure to a gradually increasing environmental desiccation simulating conditions in drought exposed soil. Folsomia candida and Protaphorura fimata (both living in the deeper soil layers; euedaphic species) were active throughout the 3. week exposure, with the developing drought regime ending at -3.56. MPa (the soil water activity at the permanent wilting point of plants is -1.5. MPa) and remained hyperosmotic (having an body fluid osmolality higher than the corresponding environment) to their surrounding air. Sinella curviseta (living in upper soil/litter layers; hemiedaphic species) also survived this exposure, but remained hypoosmotic throughout (i.e. with lower osmolality than the environment). The body content of most FAAs increased in response to drought in all three species. Alanine, proline and arginine were the most significantly upregulated FAAs. By combining our results with data in the literature, we could account for 82% of the observed osmolality at -3.56. MPa in F. candida and 92% in P. fimata. The osmolality of S. curviseta was only slightly increased under drought, but here FAAs were considerably more important as osmolytes than in the two other species. We propose that FAAs probably have general importance in drought tolerance of springtails.

Czech name

—

Czech description

—

Type

J_x - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

CEP classification

ED - Physiology

OECD FORD branch

—

Project

—

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2015

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Journal of Insect Physiology

ISSN

0022-1910

e-ISSN

—

Volume of the periodical

82

Issue of the periodical within the volume

NOV 01

Country of publishing house

GB - UNITED KINGDOM

Number of pages

8

Pages from-to

114-121

UT code for WoS article

000365054000015

EID of the result in the Scopus database

2-s2.0-84943554556