Next Article in Journal
Analysis of Different Statistical Models in Probabilistic Joint Estimation of Porosity and Litho-Fluid Facies from Acoustic Impedance Values
Previous Article in Journal
Special Issue “Laboratory Geosciences: Modelling Surface Processes” in Geosciences
Previous Article in Special Issue
Survivability of Soil and Permafrost Microbial Communities after Irradiation with Accelerated Electrons under Simulated Martian and Open Space Conditions
Open AccessArticle

Plant Tissue Decay in Long-Term Experiments with Microbial Mats

1
Diversity, Ecology and Evolution of Microbes Laboratory, Ecologie Systématique Evolution, CNRS, Université Paris-Sud, 91405 Orsay, France
2
Department of Ecology, Universidad Autónoma de Madrid, 28049 Madrid, Spain
3
Department of Biology, Universidad Autónoma de Madrid, 28049 Madrid, Spain
*
Author to whom correspondence should be addressed.
Geosciences 2018, 8(11), 387; https://doi.org/10.3390/geosciences8110387
Received: 30 August 2018 / Revised: 17 October 2018 / Accepted: 19 October 2018 / Published: 25 October 2018
(This article belongs to the Special Issue Early Earth Environments and Biospheric Evolution)
The sequence of decay in fern pinnules was tracked using the species Davallia canariensis. Taphonomic alterations in the sediment–water interface (control tanks) and in subaqueous conditions with microbial mats were compared. The decay sequences were similar in control and mat tanks; in both cases, pinnules preserved the shape throughout the four-month experience. However, the quality and integrity of tissues were greater in mats. In control tanks, in which we detected anoxic and neutral acid conditions, the appearance of a fungal–bacterial biofilm promoted mechanical (cell breakage and tissue distortions) and geochemical changes (infrequent mineralizations) on the external and internal pinnule tissues. In mats, characterized by stable dissolved oxygen and basic pH, pinnules became progressively entombed. These settings, together with the products derived from mat metabolisms (exopolymeric substances, proteins, and rich-Ca nucleation), promoted the integrity of external and internal tissues, and favored massive and diverse mineralization processes. The experience validates that the patterns of taphonomic alterations may be applied in fossil plants. View Full-Text
Keywords: experimental taphonomy; plant fossilization; soft-tissue preservation; plant decay; biomineralization experimental taphonomy; plant fossilization; soft-tissue preservation; plant decay; biomineralization
Show Figures

Figure 1

MDPI and ACS Style

Iniesto, M.; Blanco-Moreno, C.; Villalba, A.; Buscalioni, Á.D.; Guerrero, M.C.; López-Archilla, A.I. Plant Tissue Decay in Long-Term Experiments with Microbial Mats. Geosciences 2018, 8, 387.

Show more citation formats Show less citations formats
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Back to TopTop