Program with Links to Abstracts

8:20 AM

Session Introduction

8:25 AM

Walter A. Kounaves S. P.*

Fragmentation of Tryptophan as a Biomarker on Mars when Exposed to UV Irradiation in the Presence of an Oxychlorine [#2634]
Exposure of tryptophan on Mars to UV irradiation in the presence of an oxychlorine salt (sodium chlorite) results in fragmentation/alteration of the biomarker.

8:35 AM

Larter S. R.* Snowdon L. R. Tutolo B. M. Silva R. C.

Preservation of Biomarker and Aliphatic Carbon Signals on Highly Irradiated Organic Matter Bearing Planetary Bodies [#1144]
We assess gamma radiolysis (to 10 MGy) on durability of biomarker hydrocarbons, contemplating optimal protocols to detect biomarker signals on other worlds.

8:45 AM

Fox A. C.* Jakubek R. S. Eigenbrode J. L.

Changes in the Raman and Fluorescence Spectroscopic Signatures of Irradiated Organic-Mineral Mixtures: Implications for Molecular Biosignature Detection on Mars [#1548]
The effect of high-energy radiation on organic-mineral mixtures and the implications for molecular biosignature detection on Mars.

8:55 AM

Bernard S.* Beyssac O. Ollila A. Lopez-Reyes G. Manrique J. et al.

Irradiation of Organics on Mars: Evolution of the Raman Signal of the Ertalyte Target Aboard Perseverance [#1443]
The SuperCam Raman study of the Ertalyte target onboard Perseverance allows investigating the actual impact of UV radiation on organic materials on Mars.

9:05 AM

Panel Q&A

9:25 AM

Benison K. C.* Bosak T. Clark B. C. Czar A. D. Fornaro T. et al.

Biosignature Potential and Possible Environmental Indicators of Sulfate-Rich Rocks from Hogwallow Flats and Yori Pass, Jezero Crater Delta Front, Mars [#2570]
Sulfates sampled on Mars have potential for biosignatures.

9:35 AM

Perl S. M.* Celestian A. J. Cockell C. S. Corsetti F. A. Basu C. et al.

Microbial Pigment Robustness in Martian and Ocean Worlds Brines and Evaporites [#2434]
We highlight the results of UV-C exposure on biological pigments in simulated martian settings and validation of cellular measurements and biopreservation.

9:45 AM

Feng T.* Pasek M. A.

Thermal Phosphide Mineral Oxidation Chemistry [#1322]
Phosphides are able to oxidize into calcium phosphates with the support of silicate minerals in meteorites under high temperatures and lack of water conditions.

9:55 AM

Chan Q. H. S.* Watson J. S. Sephton M. A.

The Amino Acid Composition of the Winchcombe Meteorite [#1474]
Our interest in the biologically relevant molecules, amino acids-monomers of protein, is addressed by GC-MS analysis of the hot water extraction of Winchcombe.

10:05 AM

Panel Q&A

10:25 AM

Gann P. J. Ramachandran A. R.* Dwiningsih Y. D. Dharwadker D. D. Srivastava V. S.

Rice Can Grow and Survive in the Martian Regolith with Challenges that Could Be Overcomed Through Control of Stress-Related Genes [#2990]
It is possible to grow rice in MMS1 and editing SnRK1a could be an approach to develop a stable rice line that can germinate and grow in MMS1 with Mg(ClO4)2.

10:35 AM

Foustoukos D. I.* Pérez-Rodríguez I. Sievert S. M. Vetriani C.

Lithotrophic Nitrate Reduction Under High-Pressure Conditions at Deep-Sea Vents [#1084]
We assess the effect of chemolithoautotrophic NO3-reduction on the adaptation strategies of microbial communities at the extreme conditions of deep-sea vents.

10:45 AM

Zhao L.* Perez-Fernandez C. A. DiRuggiero J. Ramesh K. T.

Microbial Response to Extreme Impact Stresses [#2424]
Microbial survival and response to high dynamically applied pressures are characterized by impact experiments on cells to understand the limits of life.

10:55 AM

Cycil L. C.* Hausrath E. M. Raymond J. Ming D. W. Adcock C. T. et al.

Transcriptome-Based Expression Analysis and O2 Generation of Algae Growing Under Mars-Relevant Low Pressure and Variable Light Intensities and Wavelengths [#2797]
Transcriptome-based expression analysis and O2 generation of algae growing under Mars-relevant low pressure and variable light intensities and wavelengths.

11:05 AM

Panel Q&A

11:25 AM

Session Closure