Phytophthora Resistance Through Production of a Fungal Protein Elicitor (β-Cryptogein) in Tobacco

Autor: David Tepfer, Catherine Boutteaux, Catherine Vigon, Sylvie Aymes, Valérie Perez, Michael J. O'Donohue, Jean-Claude Huet, Jean-Claude Pernollet

Publikováno v: Molecular Plant-Microbe Interactions, Vol 11, Iss 1, Pp 64-67 (1998)

Transformation of tobacco with a gene encoding the fungal elicitor protein, β-cryptogein, resulted in resistance to the pathogen Phytophthora parasitica var. nicotianae. Resistance was improved when the foreign gene was in the hemizygous state, and

Externí odkaz: https://doaj.org/article/d43726b11c864823b2aa162624ee2c52

Shikoku

Autor: David Tepfer

'...an island in Japan, where bicycles, food and love mix for high adventure.'A retired professor-poet and a young doctor-jazz singer cycle Shikoku in the Seto Inland Sea. Their wanderings unite them emotionally and physically, and help them to overc

Survival and DNA Damage in Plant Seeds Exposed for 558 and 682 Days outside the International Space Station

Autor: David Tepfer, Sydney Leach

Publikováno v: Astrobiology
Astrobiology, Mary Ann Liebert, 2017, 17 (3), pp.205-215. ⟨10.1089/ast.2015.1457⟩
Astrobiology, 2017, 17 (3), pp.205-215. ⟨10.1089/ast.2015.1457⟩

For life to survive outside the biosphere, it must be protected from UV light and other radiation by exterior shielding or through sufficient inherent resistance to survive without protection. We tested the plausibility of inherent resistance in plan

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7cacd2ec3fb36b75c5837dace57884c4
https://hal.archives-ouvertes.fr/hal-01605856

Directed exospermia: I. Biological modes of resistance to UV light are implied through absorption spectroscopy of DNA and potential UV screens.

Autor: Andreja Zalar¹, David Tepfer¹, Søren V. Hoffmann², John M. Kenney³, Sydney Leach⁴

Publikováno v: International Journal of Astrobiology. Jul2007, Vol. 6 Issue 3, p229-240. 12p.

Survival of seeds in hypervelocity impacts

Autor: Aaron Jerling, David Tepfer, Mark J. Burchell

Publikováno v: International Journal of Astrobiology
International Journal of Astrobiology, Cambridge University Press (CUP), 2008, 7 (3-4), pp.217-222. ⟨10.1017/S1473550408004278⟩

Panspermia (‘seeds everywhere’) postulates that life naturally migrates through space. Laboratory studies of Panspermia often examine the survival of Earth's species under the conditions thought to occur during transfer through space. Much of thi

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d769ed0c4beae4e10e8ec2bb9ae2a9f4
https://doi.org/10.1017/s1473550408004278