Assessing Negative and Positive Phototropism in Lianas
By the nineteenth century, root climbers and adhesive-tendril climbers were known to exhibit negative phototropism. Negative phototropism is shared by various plant species belonging to many taxonomic families and is considered to be an outcome of parallel evolution. Through negative phototropism, lianas search for supporting hosts; however, compared with positive phototropism, which occurs during germination, there is little research on the properties of negative phototropism. This chapter presents a technique for quantifying negative phototropism in root climbers and adhesive-tendril climbers, which involves casting light on one side of a liana shoot and measuring the coordinates of the shoot tip and the angle of curvature of the entire shoot relative to the gradient of the light conditions.
Key wordsAdhesive-tendril climber Creeping shoot Negative phototropism Root climber Woody vine
This work was supported by a Grant-in-Aid for Young Scientists (B17780120 and B24780147) and by a Grant for Young Scientists from Gifu University.
- 1.Hegarty EE (1991) Vine-host interactions. In: Putz FE, Mooney HA (eds) The biology of vines. Cambridge University Press, CambridgeGoogle Scholar
- 3.Sachs JV (1882) Vorlesungen über Pflanzen-Physiologie. Wilhelm Engelmann, LeipzigGoogle Scholar
- 4.Oltmanns F (1892) Über die photometrischen Bewegungen der Pflanzen. Flora 75:183–266Google Scholar
- 5.Hofmeister W (1867) Handbuch der physiologischen Botanik. Wilhelm Engelmann, LeipzigGoogle Scholar
- 7.Dutrochet MH (1837) Mémoires pour servir a l’histoire anatomique et physiologique des végétaux et des animaux. Tome second, Baillière, ParisGoogle Scholar
- 8.Darwin C (1880) The power of movement in plants. John Murray, LondonGoogle Scholar
- 12.Kato S, Kanematsu T, Kawakubo N, Komiyama A (2012) Positive and negative phototropism in Schizophragma hydrangeoides and Parthenocissus tricuspidata. Jpn J Forest Environ 54:1–5Google Scholar
- 13.Hart JW (1990) Plant tropisms and other growth movements. Chapman & Hall, LondonGoogle Scholar