Häder D-P, Hemmersbach R and Lebert M. 2005. Gravity and the Behaviour of Unicellular
Organisms.Cambridge, UK: University Press.
Häder D-P, Rosum A, Schäfer J and Hemmersbach R. 1996. Graviperception in the flagellate
Euglena gracilisduring a shuttle space flight. Journal of Biotechnology47:261–269.
Häder D-P, Porst M, Tahedl H, Richter P and Lebert M. 1997. Gravitactic orientation in the flag-
ellate Euglena gracilis. Microgravity Science Technology10: 53–57.
Hejnowicz Z and Sievers A. 1981. Regulation of the position of statoliths in Chararhizoids.
Protoplasma108:117–137.
Hemmersbach R, Voormanns R, Briegleb W, Rieder N and Häder D-P. 1996a. Influence of accel-
erations on the spatial orientation of Loxodesand Paramecium. Journal of Biotechnology
47:271–8.
Hemmersbach R, Voormanns R and Häder D-P. 1996b. Graviresponses in Paramecium biaurelia
under different accelerations: studies on the ground and in space. Journal of Experimental
Biology 199:2199–2205.
Hemmersbach R, Voormanns R, Bromeis B, Schmidt N, Rabien H and Ivanova K. 1998.
Comparative studies of the graviresponses of Parameciumand Loxodes. Advances in Space
Research21:1285–1289.
Hemmersbach R and Häder D-P. 1999. Graviresponses of certain ciliates and flagellates. FASEB
Journal13:S69–S75.
Hemmersbach R, Volkmann D and Häder D-P. 1999. Graviorientation in protists and plants.
Journal of Plant Physiology154:1–15.
Hemmersbach R and Bräucker R. 2002. Gravity-related behaviour in ciliates and flagellates. In
Cell Biology and Biotechnology in Space, edited by Augusto Cogoli, pp. 59–75. Amsterdam:
Elsevier.
Hemmersbach-Krause R, Briegleb W, Vogel K and Häder D-P. 1993a. Swimming velocity of
Parameciumunder the conditions of weightlessness. Acta Protozoologica32: 229–36.
Hemmersbach-Krause R, Briegleb W, Häder D-P, Vogel K, Grothe D and Meyer I. 1993b.
Orientation of Parameciumunder the conditions of weightlessness. Journal of Eukaryotic
Microbiology40:439–446.
Hodick D and Sievers A. 1998. Hypergravity can reduce but not enhance the gravitropic response
of Chara globularisprotonemata. Protoplasma204:145–154.
Hodick D, Buchen B and Sievers A. 1998. Statolith positioning by microfilaments in Chararhi-
zoids and protonemata. Advances in Space Research21:1183–1189.
Hoson T, Kamisaka S, Masuda Y, Yamashita M and Buchen B. 1997. Evaluation of the three-
dimensional clinostat as a simulator of weightlessness. Planta203:S187–S197.
Hou G, Mohamalawari DR and Blancaflor EB. 2003. Enhanced gravitropism of roots with a dis-
rupted cap actin cytoskeleton. Plant Physiology113:1360–1373.
Hou G, Kramer VL, Wang Y-S, Chen R, Perbal G, Gilroy S, and Blancaflor EB. 2004. The promo-
tion of gravitropism in Arabidopsisroots upon actin disruption is coupled with the extended al-
kalinization of the columella cytoplasm and a persistent lateral auxin gradient. Plant Journal
39:113–125.
Kiss JZ. 2000. Mechanisms of the early phases of plant gravitropism. Critical Reviews in Plant
Sciences19:551–573.
Klaus D, Simske S, Todd P and Stodieck L. 1997. Investigation of space flight effects on Escherichia
coliand a proposed model of underlying physical mechanisms. Microbiology143:449–55.
Krause M. 2003. Schwerkraftwahrnehmung des Ciliaten Stylonychia mytilus: Elektro- und verhal-
tensphysiologische Untersuchungen. Faculty of Bochum, Ruhr-University, Bochum.
Kuznicki L. 1968. Behavior of Paramecium in gravity fields. I. Sinking of immobilized speci-
mens. Acta Protozoologica5:109–17.
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