New Microorganisms Discovered In Earth's Stratosphere Options

[Hey Hey]

New Microorganisms Discovered In Earth's Stratosphere
ScienceDaily (Mar. 18, 2009)

Three new species of bacteria, which are not found on Earth and which are highly resistant to ultra-violet radiation, have been discovered in the upper stratosphere by Indian scientists.

One of the new species has been named as Janibacter hoylei, after the distinguished astrophysicist Fred Hoyle, the second as Bacillus isronensis recognising the contribution of ISRO in the balloon experiments which led to its discovery and the third as Bacillus aryabhata after India’s celebrated ancient astronomer Aryabhata and also the first satellite of ISRO.

The experiment was conducted using a 26.7 million cubic feet balloon carrying a 459 kg scientific payload soaked in 38 kg of liquid neon, which was flown from the National Balloon Facility in Hyderabad, operated by the Tata Institute of Fundamental Research (TIFR). The payload consisted of a cryosampler containing sixteen evacuated and sterilised stainless steel probes.

Throughout the flight, the probes remained immersed in liquid Neon to create a cryopump effect. These cylinders, after collecting air samples from different heights ranging from 20 km to 41 km, were parachuted down and safely retrieved. These samples were analysed by scientists at the Center for Cellular and Molecular Biology, Hyderabad as well as the National Center for Cell Science (NCCS), Pune for independent examination, ensuring that both laboratories followed similar protocols to achieve homogeneity of procedure and interpretation.

The Findings

In all, 12 bacterial and six fungal colonies were detected, nine of which, based on 16S RNA gene sequence, showed greater than 98% similarity with reported known species on Earth. Three bacterial colonies, namely, PVAS-1, B3 W22 and B8 W22 were, however, totally new species. All the three newly identified species had significantly higher UV resistance compared to their nearest phylogenetic neighbours. Of the above, PVAS-1, identified as a member of the genus Janibacter, has been named Janibacter hoylei. sp. nov. The second new species B3 W22 was named as Bacillus isronensis sp.nov. and the third new species B8 W22 as Bacillus aryabhata.

The precautionary measures and controls operating in this experiment inspire confidence that these species were picked up in the stratosphere. While the present study does not conclusively establish the extra-terrestrial origin of microorganisms, it does provide positive encouragement to continue the work in our quest to explore the origin of life.

This multi-institutional effort had Jayant Narlikar from the Inter-University Centre for Astronomy and Astrophysics, Pune as Principal Investigator and veteran scientists U.R. Rao from ISRO and P.M. Bhargava from Anveshna supported as mentors of the experiment. S. Shivaji from CCMB and Yogesh Shouche from NCCS were the biology experts and Ravi Manchanda from TIFR was in charge of the balloon facility. C.B.S. Dutt was the project director from ISRO who was in charge of preparing and operating the complex payload.

This was the second such experiment conducted by ISRO, the first one being in 2001. Even though the first experiment had yielded positive results, it was decided to repeat the experiment by exercising extra care to ensure that it was totally free from any terrestrial contamination.

[Rick]

It doesn't anwser very many questions, does it? Like how they got up there and how they reproduce without water or a surface to grow on.

[Hey Hey]

It doesn't anwser very many questions, does it? Like how they got up there and how they reproduce without water or a surface to grow on.

I'm sure that scientists are applying for research grants as we write!

[Hey Hey]

Just a note, that all of the species (including the "new" ones) have evolutionary lines that are found on (terrestrial) Earth. The fact that there are new species does not detract from the fact that the higher taxonomical classification groups of these new organisms are found terrestrially. And those higher groups themselves originated from earlier taxa. (These findings are made from molecular biological methods) So, the stratospheric microbes must have evolutionary origins on Earth.

But what the findings indicate is that microbes are able to survive in the conditions found in the stratosphere. This helps to support the idea that (some) microbes might be able to survive extra-terrestrially, in conditions of very high UV irradiation, desiccation, etc. So, adding support to panspermia and that microbes might survive in the harsher conditions on say, Mars, though that is a larger jump in optimism.

(The Bacillus genus is an endospore-forming group. Endospores are very hardy, dormant forms of some bacteria, notably Bacillus [aerobic] and Clostridium [Anaerobic])

[Rick]

It would be interesting to see if we can breed cyano-bacteria that can survive in simulated Martian conditions. If so, then it would be fairly easy to pan-spermify Mars using rockets and landers.

[Hey Hey]

It would be interesting to see if we can breed cyano-bacteria that can survive in simulated Martian conditions. If so, then it would be fairly easy to pan-spermify Mars using rockets and landers.

That's not an unreasonable suggestion. I wonder if anyone is doing experiments to make mutants of bacteria (dead easy to do) and then seeing if they can survive in such conditions? If I still had my own labs I would have a go. Any offers?