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Photoperiodic control of seasonal growth is mediated by ABA acting on cell-cell communication
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2018 (English)In: Science, ISSN 0036-8075, E-ISSN 1095-9203, Vol. 360, no 6385, p. 212-214Article in journal (Refereed) Published
Abstract [en]

In temperate and boreal ecosystems, seasonal cycles of growth and dormancy allow perennial plants to adapt to winter conditions. We show, in hybrid aspen trees, that photoperiodic regulation of dormancy is mechanistically distinct from autumnal growth cessation. Dormancy sets in when symplastic intercellular communication through plasmodesmata is blocked by a process dependent on the phytohormone abscisic acid. The communication blockage prevents growth-promoting signals from accessing the meristem. Thus, precocious growth is disallowed during dormancy. The dormant period, which supports robust survival of the aspen tree in winter, is due to loss of access to growth-promoting signals.

Place, publisher, year, edition, pages
American Association for the Advancement of Science (AAAS) , 2018. Vol. 360, no 6385, p. 212-214
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Forest Science Genetics
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URN: urn:nbn:se:umu:diva-147296DOI: 10.1126/science.aan8576ISI: 000429805400048PubMedID: 29519919OAI: oai:DiVA.org:umu-147296DiVA, id: diva2:1210062
Available from: 2018-05-25 Created: 2018-05-25 Last updated: 2018-06-09Bibliographically approved

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Mähler, NiklasHvidsten, Torgerir R.

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Mähler, NiklasHvidsten, Torgerir R.
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Umeå Plant Science Centre (UPSC)Department of Plant Physiology
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