Recovery of adenine-nucleotide pools in terrestrial blue-green algae after prolonged drought periods

Siegfried Scherer, Ting Wei Chen, Peter Böger

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29 Scopus citations

Abstract

The response of Nostoc commune and Nostoc flagelliforme (terrestrial blue-green algae), grown in their natural habitat, towards rewetting after prolonged drought periods (2 weeds up to five years) has been investigated. In Nostoc flagelliforme, the energy charge (EC) about 0.18 in dry condition increases rapidly (EC=0.7 after 1 h) and more slowly in a second phase (EC=0.8 after 6 h). The total content of AXP (=ATP+ADP+AMP) apparently increases due to de novo synthesis of adenine nucleotides. ATP-build-up after a drought period is probably provided by oxidative phosphorylation. It has been found to be about the same, regardless of whether the foregoing drought period had been extended over 6 months or 5 years. Dry samples of colony mats of N. commune exhibit very low ATP-, but high ADP-contents. Within 6 h after rewetting, the final level of extractable ATP (60-100 nmol/mg chlorophyll) is recovered.

Original languageEnglish
Pages (from-to)585-588
Number of pages4
JournalOecologia
Volume68
Issue number4
DOIs
StatePublished - Mar 1986
Externally publishedYes

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