Collings DA, Winter H, Wyatt SE, and Allen NS. 1998. Growth dynamics and the cytoskeleton or-
ganization during stem maturation and gravity-induced stem bending in Zea maysL.Planta
207:246–58.
Collings DA, Zsuppan G, Allen NS, and Blancaflor EB. 2001. Demonstration of prominent actin
filaments in the root columella. Planta212:392–403.
Driss-Ecole D, Vassy J, Rembur J, Giuvarch A, Proteau M, Dewitte W, and Perbal G. 2000. Immu-
nolocalization of actin in root statocytes ofLens culinarisL.Journal of Experimental Botany
51:512–28.
Esmon CA, Pedmale UV, and Liscum E. 2005. Plant tropisms: Providing the power of movement
to a sessile organism. International Journal of Developmental Biology49:665–74.
Friedman H, Vos JW, Hepler PK, Meir S, Halevy AH, and Philosoph-Hadas S. 2003. The role
of actin filaments in the gravitropic response of snapdragon flowering shoots. Planta216:
1034–42.
Friml J, Winiewska J, Benková E, Mendgen K, and Palme K. 2002. Lateral relocation of auxin ef-
flux regulator PIN3 mediates tropism in Arabidopsis. Nature415:806–9.
Fujihara K, Kurata T, Watahiki MK, Karahara I, and Yamamoto KT. 2000. An agravitropic mutant
ofArabidopsis,endodermal-amyloplast less, that lacks amyloplasts in hypocotyls endodermal
cell layer. Plant Cell Physiology41:1193–9.
Fukaki H, Wysocka-Diller J, Kato T, Fujisawa H, Benfey PN, and Tasaka M. 1998. Genetic evi-
dence that the endodermis is essential for shoot gravitropism in Arabidopsis thaliana.Plant
Journal14:425–30.
Hatakeda Y, Kamada M, Goto N, Fukaki H, Tasaka M, Suge H, and Takahashi H. 2003.
Gravitropic response plays an important role in the nutational movements of the shoots of
Pharbitis nilandArabidopsis thaliana.Physiologia Plantarum118:464–73.
Hensel W. 1985. Cytochalasin B affects the structural polarity of statocytes from cress roots
Lepidium sativumL.Protoplasma 129:178–87.
Hensel W. 1988. Demonstration by heavy meromyosin of actin microfilaments in extracted cress
(Lepidium sativumL.) root statocytes. Planta173:142–3.
Hensel W. 1989. Tissue slices from living root caps as a model system in which to study cytodif-
ferentiation of polar cells. Planta177:296–303.
Hou G, Mohamalawari DR, and Blancaflor EB. 2003. Enhanced gravitropism of roots with a dis-
rupted cap actin cytoskeleton. Plant Physiology 131:1360–73.
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
31:113–25.
Iino M. 2006. Toward understanding the ecological functions of tropisms: Interactions among and
effects of light on tropisms. Current Opinion in Plant Biology9:89–93.
Kato T, Morita MT, Fukaki H, Yamauchi Y, Uehara M, Niihama M, and Tasaka M. 2002. SGR2, a
phospholipase-like protein, and ZIG/SGR4, a SNARE, are involved in the shoot gravitropism
ofArabidopsis.Plant Cell14:33–46.
Kimbrough JM, Salinas-Mondragon R, Boss WF, Brown CS, and Sederoff HW. 2004. The fast and
transient transcriptional network of gravity and mechanical stimulation in the Arabidopsisroot
apex. Plant Physiology136:2790–805.
Kiss JZ. 2000. Mechanisms of the early phases of plant gravitropism. Crit Rev Plant Sci19:551–73.
Kiss JZ. 2006. Up, down, and all around: How plants sense and respond to environmental stimuli.
Proceedings of the National Academy of Sciences USA103:829–30.
Kiss JZ, Guisinger MM, Miller, AJ, and Stackhouse KS. 1997. Reduced gravitropism in
hypocotyls of starch-deficient mutants of Arabidopsis.Plant Cell Physiology38:518–25.
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