2006
DOI: 10.1093/pcp/pci237
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Gravitropism in Leaves of Arabidopsis thaliana (L.) Heynh.

Abstract: In higher plants, stems and roots show negative and positive gravitropism, respectively. However, current knowledge on the graviresponse of leaves is lacking. In this study, we analyzed the positioning and movement of rosette leaves of Arabidopsis thaliana under light and dark conditions. We found that the radial positioning of rosette leaves was not affected by the direction of gravity under continuous white light. In contrast, when plants were shifted to darkness, the leaves moved upwards, suggesting negativ… Show more

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Cited by 28 publications
(24 citation statements)
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“…The conventional gravitropic mutants in hypocotyls, phosphoglucomutase and shoot gravitropism2, also exhibit reduced gravitropism in petioles, suggesting that petioles and hypocotyls share the same mechanism of gravity response (Mano et al, 2006). The mechanism of the [Ca 21 ] c increase may also be shared in hypocotyls and petioles, because we observed [Ca 21 ] c increases with comparable amplitude in both the organs (Fig.…”
Section: Properties Of Biphasic [Ca 21 ] C Transient Induced By Gravimentioning
confidence: 51%
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“…The conventional gravitropic mutants in hypocotyls, phosphoglucomutase and shoot gravitropism2, also exhibit reduced gravitropism in petioles, suggesting that petioles and hypocotyls share the same mechanism of gravity response (Mano et al, 2006). The mechanism of the [Ca 21 ] c increase may also be shared in hypocotyls and petioles, because we observed [Ca 21 ] c increases with comparable amplitude in both the organs (Fig.…”
Section: Properties Of Biphasic [Ca 21 ] C Transient Induced By Gravimentioning
confidence: 51%
“…2, B and C). Hypocotyls and petioles in general show gravitropic responses (Fukaki et al, 1998;Mano et al, 2006), which is spatially related to the [Ca 21 ] c increase. Thus, our observations raise the possibility that the [Ca 21 ] c increase is a gravity response in shoots of Arabidopsis seedlings.…”
Section: [Ca 21 ] C Increases In Hypocotyls and Petioles In Response mentioning
confidence: 99%
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“…Abnormal amyloplast sedimentation in graviperceptive endodermal cells and dramatic reduction in the gravitropism of inflorescence stems, hypocotyls, and petioles were observed in shoot gravitropism (sgr) 2 plants Mano et al 2006;Morita et al 2002;Toyota et al 2013b). The protein sequence of SGR2 is homologous to PA-hydrolyzing phospholipase А 1 .…”
Section: Phospholipase Amentioning
confidence: 99%
“…In pistil, they are located in cells along the inner cortex layers below the epidermis. In monocot stems, they are also observed in bundle sheath of internodal pulvini, coleoptiles, and in stem leaf sheath (Blancaflor and Masson 2003;Kitazawa et al 2005;Li et al 2013;Mano et al 2006;Philosoph-Hadas et al 2015;Shimizu et al 2005). In organs with secondary growth, cambium may be suggested to be a gravisensing site (Coutand et al 2014).…”
Section: Introductionmentioning
confidence: 99%