Andres C, Agne B, Kessler F (2010) The TOC complex: preprotein gateway to the chloroplast. Biochim Biophys Acta 1803:715–723
Bastien R, Douady S, Moulia B (2014) A unifying modeling of plant shoot gravitropism with an explicit account of the effects of growth. Front Plant Sci 5:136. doi:10.3389/fpls.2014.00136
Battista N, Meloni MA, Bari M, Mastrangelo N, Galleri G, Rapino C, Dainese E, Agro AF, Pippia P, Maccarrone M (2012) 5-lipoxygenase-dependent apoptosis of human lymphocytes in the International Space Station: data from the ROALD experiment. FASEB J 26:1791–1798
Blancaflor EB (2013) Regulation of plant gravity sensing and signaling by the actin cytoskeleton. Am J Bot 100:143–152
Correll MJ, Pyle TP, Millar KDL, Sun Y, Yao J, Edelmann RE, Kiss JZ (2013) Transcriptome analysis of Arabidopsis thaliana seedlings grown in space: implications for gravity responsive genes. Planta 238:519–533
De Micco V, Aronne G, Joseleau J-P, Ruel K (2008) Xylem development and cell wall changes of soybean seedlings grown in space. Ann Bot 101:661–669
Driss-École D, Vassy J, Rembur J, Guivarc’h A, Prouteau M, Dewitte W, Perbal G (2000) Immunolocalization of actin in root statocytes of Lens culinaris L. J Exp Bot 51:521–528
Evans ML, Moore R, Hasenstein KH (1986) How roots respond to gravity. Sci Am 255:112–119
Fukaki H, Tasaka M (1999) Gravity perception and gravitropic response of inflorescence stems in Arabidopsis thaliana. Adv Space Res 24:763–770
Guisinger MM, Kiss JZ (1999) The influence of microgravity and spaceflight on columella cell ultrastructure in starch-deficient mutants of Arabidopsis. Am J Bot 86:1357–1366
Haberlandt G (1914) Physiological plant anatomy, 4th edn. Macmillan, London
Halstead TW, Dutcher FR (1987) Plants in space. Ann Rev Plant Physiol 38:317–345
Hashiguchi Y, Tasaka M, Morita MT (2013) Mechanism of higher plant gravity sensing. Am J Bot 100:91–100
Hertel R, De la Fuente RK, Leopold AC (1969) Geotropism and the lateral transport of auxin in the corn mutant amylomaize. Planta 88:204–214
Hoson T, Soga K, Mori R, Saiki M, Nakamura Y, Wakabayashi K, Kamisaka S (2002) Stimulation of elongation growth and cell wall loosening in rice coleoptiles under microgravity conditions in space. Plant Cell Physiol 43:1067–1071
Iversen T-H (1969) Elimination of gravitropic responsiveness in roots of cress (Lepidium sativum) by removal of statolith starch. Physiol Plant 22:1251–1262
Josse E-M, Halliday KJ (2008) Skotomorphogenesis: the dark side of light signaling. Curr Bio 18:R1144–R1146
Kern VD, Sack FD, White NJ, Anderson K, Wells W, Martin CA (1999) Spaceflight hardware allowing unilateral irradiation and chemical fixation in Petri dishes. Adv Space Res 24:775–778
Kiss JZ (2000) Mechanisms of the early phases of plant gravitropism. Crit Rev Plant Sci 19:551–573
Kiss JZ, Sack FD (1990) Severely reduced gravitropism in dark-grown hypocotyls of a starch-deficient mutant of Nicotiana sylvestris. Plant Physiol 94:1867–1873
Kiss JZ, Hertel R, Sack FD (1989) Amyloplasts are necessary for full gravitropic sensitivity in roots of Arabidopsis thaliana. Planta 177:198–206
Kiss JZ, Wright JB, Caspar T (1996) Gravitropism in roots of intermediate-starch mutants of Arabidopsis. Physiol Plant 97:237–244
Kiss JZ, Guisinger MM, Miller AJ, Stackhouse KS (1997) Reduced gravitropism in hypocotyls of starch-deficient mutants of Arabidopsis. Plant Cell Physiol 38:518–525
Kiss JZ, Edelmann RE, Wood CP (1999) Gravitropism of hypocotyls of wild-type and starch-deficient Arabidopsis seedlings in spaceflight studies. Planta 209:96–103
Kiss JZ, Kumar P, Bowman RN, Steele MK, Eodice MT, Correll MJ, Edelmann RE (2007) Biocompatibility studies in preparation for a spaceflight experiment on plant tropisms (TROPI). Adv Space Res 39:1154–1160
Kiss JZ, Millar KDL, Edelmann RE (2012) Phototropism of Arabidopsis thaliana in microgravity and fractional gravity on the International Space Station. Planta 236:635–645
Kraft TFB, VanLoon JJWA, Kiss JZ (2000) Plastid position in Arabidopsis columella cells is similar in microgravity and on a random-positioning machine. Planta 211:415–422
Kumar NS, Stevens MHH, Kiss JZ (2008) Plastid movement in statocytes of the ARG1 (altered response to gravity) mutant. Am J Bot 95:177–184
Leitz G, Kang B, Schoenwaelder MEA, Staehelin LA (2009) Statolith sedimentation kinetics and force transduction to the cortical endoplasmic reticulum in gravity-sensing Arabidopsis columella cells. Plant Cell 21:843–860
Levine LH, Heyenga AG, Levine HG, Choi JW, Davin LB, Krikorian AD, Lewis NG (2001) Cell-wall architecture and lignin composition of wheat developed in a microgravity environment. Phytochemistry 57:835–846
Lloyd SA, Ferguson VS, Simske SJ, Dunlap AW, Livingston EW, Bateman TA (2013) Housing in the animal enclosure module spaceflight hardware increases trabecular bone mass in ground-control mice. Gravit Space Res 1:2–19
MacCleery SA, Kiss JZ (1999) Plastid sedimentation kinetics in roots of wild-type and starch-deficient mutants of Arabidopsis. Plant Physiol 120:183–192
Mano E, Horiguchi G, Tsukaya H (2006) Gravitropism in leaves of Arabidopsis thaliana (L.) Heynh. Plant Cell Physiol 47:217–223
Massa G, Newsham G, Hummerick ME, Caro JL, Stutte GW, Morrow RC, Wheeler RM (2013) Preliminary species and media selection for the veggie space hardware. Gravit Space Res 1:95–106
Millar KDL, Johnson CM, Edelmann RE, Kiss JZ (2011) An endogenous growth pattern in roots is revealed in seedlings grown in microgravity. Astrobiology 11:787–797
Molas ML, Kiss JZ (2009) Phototropism and gravitropism in plants. Adv Bot Res 49:1–34
Moore R (1990) How effectively does a clinostat mimic the ultrastructural effects of microgravity on plant cells? Ann Bot 65:213–216
Moore R, Evans ML (1986) How roots perceive and respond to gravity. Am J Bot 73:574–587
Morita MT, Kato T, Nagafusa K, Saito C, Ueda T, Nakano A, Tasaka M (2002) Involvement of the vacuoles of the endodermis in the early process of shoot gravitropism in Arabidopsis. Plant Cell 14:47–56
Musgrave ME, Kuang A, Matthews SW (1997) Plant reproduction during spaceflight: importance of the gaseous environment. Planta 203:S177–S184
Musgrave ME, Kuang A, Brown CS, Matthews SW (1998) Changes in Arabidopsis leaf ultrastructure, chlorophyll and carbohydrate content during spaceflight depend on ventilation. Ann Bot 81:503–512
Nakashima J, Liao F, Sparks JA, Tang Y, Blancaflor EB (2014) The actin cytoskeleton is a suppressor of the endogenous skewing behavior of Arabidopsis primary roots in microgravity. Plant Biol 16:142–150
Palmieri M, Kiss JZ (2006) The role of plastids in gravitropism. In: Wise RR, Hoober JK (eds) The structure and function of plastids. Springer, Dordrecht, pp 507–525
Parsons-Wingerter P, Vickerman MB, Paul A-L, Ferl RJ (2014) Mapping by VESGEN of leaf venation patterning in Arabidopsis thaliana with bioinformatic dimensions of gene expression. Gravit Space Res 2:68–81
Paul A-L, Amalfitano CE, Ferl RJ (2012a) Plant growth strategies are remodeled by spaceflight. BMC Plant Biol 12:232
Paul A-L, Zupanska AK, Ostrow DT, Zhang Y, Sun Y, Li J-L, Shanker S, Farmerie WG, Amalfitano CE, Ferl RJ (2012b) Spaceflight transcriptomes: unique responses to a novel environment. Astrobiology 12:40–56
Perbal G (2009) From ROOTS to GRAVI-1: twenty five years for understanding how plants sense gravity. Microgravity Sci Technol 21:3–10
Perbal G, Driss-École D (1989) Polarity of statocytes in lentil seedling roots grown in space (spacelab D1 mission). Physiol Plant 75:518–524
Perbal G, Driss-École D (1994) Sensitivity of gravistimulus of lentil seedling roots grown in space during the IML 1 mission of spacelab. Phys Plant 90:313–318
Pickard BG, Thimann KV (1966) Geotropic response of wheat coleoptiles in absence of amyloplast starch. J Gen Physiol 49:1065–1086
Roberts JA (1984) Tropic responses of hypocotyls from normal tomato plants and the gravitropic mutant Lazy-1. Plant Cell Environ 7:515–520
Sack FD (1987) The structure of the stem endodermis in etiolated pea seedlings. Can J Bot 65:1514–1519
Sack FD (1991) Plant gravity sensing. Int Rev Cytol 127:193–252
Saito C, Morita MT, Kato T, Tasaka M (2005) Amyloplasts and vacuolar membrane dynamics in the living graviperceptive cell of the Arabidopsis inflorescence stem. Plant Cell 17:548–558
Salisbury FB (1993) Gravitropism: changing ideas. Hortic Rev 15:233–278
Schultz ER, Zupanska AK, Manning-Roach S, Camacho J, Levine H, Paul A-L, Ferl RJ (2012) Testing the bio-compatibility of aluminum PDFU BRIC hardware. Gravit Space Res 26:48–63
Scott AC, Allen NS (1999) Changes in cytosolic pH within Arabidopsis root columella cells play a key role in the early signaling pathway for root gravitropism. Plant Physiol 121:1291–1298
Sievers A, Kruse S, Kuo-Huang L-L, Wendt M (1989) Statoliths and microfilaments in plant cells. Planta 179:275–278
Song LU, Brock TG, Kaufman PB (1988) Do starch statoliths act as the gravisensors in cereal grass pulvini? Plant Physiol 86:1155–1162
Stanga JP, Kanokporn B, Sedbrook JC, Otegui MS, Masson PH (2009) A role for the TOC complex in Arabidopsis root gravitropism. Plant Physiol 149:1896–1905
Strohm AK, Barrett-Wilt GA, Masson PA (2014) A functional TOC complex contributes to gravity signal transduction in Arabidopsis. Front Plant Sci 5:148. doi:10.3389/fpls.2014.00148
Stutte GW, Roberts MS (2011) Effects of microgravity on the early events of biological nitrogen fixation in Medicago truncatula: initial results from the SyNRGE experiment. NASA Technical Report KSC-2011-249. http://ntrs.nasa.gov/search.jsp?R=20120010667 Accessed 5 May 2015
Tasaka M, Kato T, Fukaki H (1999) The endodermis and shoot gravitropism. Trends Plant Sci 4:103–107
Vandenbrink JP, Kiss JZ, Herranz R, Medina FJ (2014) Light and gravity signals synergize in modulating plant development. Front Plant Sci 5:563. doi:10.3389/fpls.2014.00563
Vitha S, Yang M, Sack FD, Kiss JZ (2007) Gravitropism in the starch excess mutant of Arabidopsis thaliana. Am J Bot 94:590–598
Volkmann D, Sievers A (1979) Graviperception in multicellular organs. In: Haupt W, Feinleib ME (eds) Encyclopedia of plant physiology. Springer, Berlin, pp 573–600
Volkmann D, Behrens HM, Sievers A (1986) Development and gravity sensing of cress roots under microgravity. Naturwissenschaften 73:438–441
Wells B, Best MD, McCray RH, Levine HG (2001) A flight-rated Petri dish apparatus providing two stage fluid injection for aseptic biological investigations in space. 31st international conference on environmental systems, SAE International 2001-01-2286
Wheeler RM, Peterson BV, Stutte GW (2004) Ethylene production throughout growth and development of plants. Hort Sci 39:1541–1545
Yamamoto K, Kiss JZ (2002) Disruption of the actin cytoskeleton results in the promotion of gravitropism in infloresence stems and hypocotyls of Arabidopsis. Plant Physiol 128:669–681
Yoder T, Zheng H, Todd P, Staehelin L (2001) Amyloplast sedimentation dynamics in maize columella cells support a new model for the gravity sensing apparatus of roots. Plant Physiol 125:1045–1060