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Investigation of change in tangential strain on the inner bark of the stem and root ofBetula platyphylla var.japonica andAcer mono during sap season
Journal of Wood Science volume 45, pages 361–367 (1999)
Abstract
Although it is well known that sap exudation during early spring in temperate deciduous trees occurs in response to daytime warming and nighttime cooling, the mechanisms of the process are not yet fully understood. Previous theories suggested that changes in stress in the wood caused by daytime heating and nighttime cooling might be linked with sap flow. Consequently, a study of itaya-kaede maple (Aver mono) and shirakamba birch (Betula platyphylla var.japonica) looked at tangential strains. One-hour intervals for 3 years of the tangential strains on the inner bark of stem and root were measured in itaya-kaede maple and shirakamba birch during the sap exudation season. The measurements indicated different mechanisms of sap exudation in these two trees. During the sap exudation season in late March, when the temperature fluctuated around 0°C, the tangential strain in the root of itaya-kaede maple showed expansion in the daytime and contraction at night. Conversely, in early April the tangential strain in the root of shirakamba birch exhibited contraction in the daytime and expansion at night. The changes in tangential strains in itaya-kaede maple were attributed to conditioning, a known concept used to explain the uptake mechanism of soil water in maple and its exudation during early spring. However, because the change in tangential strain in the roots of shirakamba birch was similar to that found during the rampant season, sap exudation was not attributed to conditioning but to the plentiful supply of water from the roots. The implications of these mechanisms are that different sap harvesting techniques may be appropriate for different tree species.
References
Terazawa M (1995) Shirakamba birch, splendid forest biomass: potential of living tree tissues. In: Terazawa M, Mcleod CA, Tamai Y (eds) Tree sap. Hokkaido University Press, Sapporo, pp 7–12
Marvin JW, Ericson RO (1956) A statistical evaluation of some of the factors responsible for the flow of sap from the sugar maple. Plant Physiol 31:57–61
Marvin JW, Greene MT (1951) Temperature induced sap flow in excised stems of Acer. Plant Physiol 26:565–580
Wiegand KM (1906) Pressure and flow of sap in the maple. Am Nat 40:409–453
Marvin JW (1958) The physiology of maple sap flow. In: Thimann KV (ed) The physiology of forest trees. Ronald Press, New York, pp 95–124
Johnson LPV (1945) Physiological studies on sap flow in the sugar maple,Acer saccharum Marsh. Can J Res 23:192–197
Milburn JA, O'Malley PER (1984) Freeze-induced sap absorption inAcer pseudoplatanus: a possible mechanism. Can J Bot 62:2101–2106
Okuyama T, Yoshida M, Yamamoto H (1995) An estimation of the turgor pressure change as one of the factors of growth stress generation in cell walls. Mokuzai Gakkaishi 41:1070–1078
Molz FJ, Klepper B (1973) On the mechanism of water-stressinduced stem deformation. Agron J 65:304–306
Fritts HC, Fritts EC (1955) A new dendrograph for recording radial changes of a tree. For Sci 1:271–276
Worrall J (1966) A method of correcting dendrometer measures of tree diameter for variations induced by moisture stress change. For Sci 12:427–429
Molz FJ, Klepper B (1973) On the mechanism of water-stressinduced stem deformation. Agron J 65:304–306
Lövdahl L, Odin H (1992) Diurnal change in the stem diameter of norway spruce in relation to relative humidity and air temperature. Trees 6:245–251
Kubler H (1983) Mechanism of frost crack formation in trees: a review and synthesis. For Sci 29:559–568
Klepper B, Browning VD, Taylor HM (1971) Stem diameter in relation to plant water status. Plant Physiol 48:683–685
Herzog KM, Haler R, Thum R (1995) Diurnal changes in the radius of a subalpine Norway spruce stem: their relation to the sap flow and their use to estimate transpiration. Trees 10:94–101
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Yoshida, M., Yamamoto, O., Okuyama, T. et al. Investigation of change in tangential strain on the inner bark of the stem and root ofBetula platyphylla var.japonica andAcer mono during sap season. J Wood Sci 45, 361–367 (1999). https://doi.org/10.1007/BF01177906
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DOI: https://doi.org/10.1007/BF01177906