Tags

Type your tag names separated by a space and hit enter

Growth of Sphagnum is strongly rhythmic: Contribution of the seasonal, circalunar and third components.

Abstract

Among the bryophytes, biological growth rhythms have not yet been identified due to a lack of long-term precision observations. Here we carry out precision field monitoring of the growth of the peat moss Sphagnum riparium using the recent geotropic curvature method. For four years, using the observation intervals of 2-5 days, we measured 116 469 shoots and received 4 493 estimates of growth rates. We found three rhythmic growth components. The seasonal rhythm of growth has a period of about 180 days, which coincides with the seasonal temperature cycle. The circalunar growth rhythm has a period of about 29.5 days and coincides with the synodic lunar cycle. There is an acceleration near the new moon, and a slowdown in growth near the full moon. The third rhythm has a period of 7-16 days and is always synchronized with the circalunar growth rhythm. From the models of the sums of sinusoids, we found that the total contribution of all three rhythms to the growth rate is R2 = 0.51-0.78, and without taking into account the seasonal rhythm, R2 = 0.36-0.42. Thus, our study gives the first data on the biological rhythms and the contribution of these rhythms to the growth process of bryophytes. We attribute the unexpectedly high contribution of rhythms to the synchronous growth of the Sphagnum mat, which is necessary to reduce the loss of moisture. This article is protected by copyright. All rights reserved.

Authors+Show Affiliations

Institute of Biology of Karelian Research Centre RAS, Pushkinskaya st. 11, 185910, Petrozavodsk, Russia.National Research University Higher School of Economics, Soyuza Pechatnikov st. 16, 190121, St. Petersburg, Russia. Institute for Regional Economic Studies Russian Academy of Sciences, Serpuhovskaya st. 38, 190013, St. Petersburg, Russia.Institute of Biology of Karelian Research Centre RAS, Pushkinskaya st. 11, 185910, Petrozavodsk, Russia.

Pub Type(s)

Journal Article

Language

eng

PubMed ID

31613995

Citation

Mironov, Victor L., et al. "Growth of Sphagnum Is Strongly Rhythmic: Contribution of the Seasonal, Circalunar and Third Components." Physiologia Plantarum, 2019.
Mironov VL, Kondratev AY, Mironova AV. Growth of Sphagnum is strongly rhythmic: Contribution of the seasonal, circalunar and third components. Physiol Plant. 2019.
Mironov, V. L., Kondratev, A. Y., & Mironova, A. V. (2019). Growth of Sphagnum is strongly rhythmic: Contribution of the seasonal, circalunar and third components. Physiologia Plantarum, doi:10.1111/ppl.13037.
Mironov VL, Kondratev AY, Mironova AV. Growth of Sphagnum Is Strongly Rhythmic: Contribution of the Seasonal, Circalunar and Third Components. Physiol Plant. 2019 Oct 15; PubMed PMID: 31613995.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Growth of Sphagnum is strongly rhythmic: Contribution of the seasonal, circalunar and third components. AU - Mironov,Victor L, AU - Kondratev,Aleksei Y, AU - Mironova,Anna V, Y1 - 2019/10/15/ PY - 2019/01/13/received PY - 2019/10/06/revised PY - 2019/10/09/accepted PY - 2019/10/16/entrez PY - 2019/10/16/pubmed PY - 2019/10/16/medline JF - Physiologia plantarum JO - Physiol Plant N2 - Among the bryophytes, biological growth rhythms have not yet been identified due to a lack of long-term precision observations. Here we carry out precision field monitoring of the growth of the peat moss Sphagnum riparium using the recent geotropic curvature method. For four years, using the observation intervals of 2-5 days, we measured 116 469 shoots and received 4 493 estimates of growth rates. We found three rhythmic growth components. The seasonal rhythm of growth has a period of about 180 days, which coincides with the seasonal temperature cycle. The circalunar growth rhythm has a period of about 29.5 days and coincides with the synodic lunar cycle. There is an acceleration near the new moon, and a slowdown in growth near the full moon. The third rhythm has a period of 7-16 days and is always synchronized with the circalunar growth rhythm. From the models of the sums of sinusoids, we found that the total contribution of all three rhythms to the growth rate is R2 = 0.51-0.78, and without taking into account the seasonal rhythm, R2 = 0.36-0.42. Thus, our study gives the first data on the biological rhythms and the contribution of these rhythms to the growth process of bryophytes. We attribute the unexpectedly high contribution of rhythms to the synchronous growth of the Sphagnum mat, which is necessary to reduce the loss of moisture. This article is protected by copyright. All rights reserved. SN - 1399-3054 UR - https://www.unboundmedicine.com/medline/citation/31613995/Growth_of_Sphagnum_is_strongly_rhythmic:_Contribution_of_the_seasonal,_circalunar_and_third_components L2 - https://doi.org/10.1111/ppl.13037 DB - PRIME DP - Unbound Medicine ER -