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Chemical Release of Endodormancy in Potato Involves Multiple Mechanisms

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Advances in Plant Dormancy

Abstract

The cessation of endodormancy in potato meristems can be accomplished with the application of compounds including bromoethane (BE), Rindite, or synthetic cytokinins such as 1-(α-ethylbenzyl)-3-nitroguanidine (NG). Rindite and BE are toxic compounds and induced a significant stress on dormant tissues. Transcriptional analysis reveals that BE induces the expression of genes associated with stress responses. RNA-seq analysis of dormant tubers treated with NG reveals a rapid response and induction of transcripts associated with cell cycle progression. Analysis of small RNAs demonstrates that nondormant potato meristems have an increased level of miR166, which is involved with shoot meristem development. The diverse transcriptional profiles between BE-treated and NG-treated potato meristems suggest that these compounds terminate potato endodormancy through different mechanisms. Cessation of endodormancy may involve miRNA activity that modifies the transcriptional machinery regulating the development of the shoot apical meristem.

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Authors and Affiliations

  1. School of Science, Penn State Erie, P1 Prischak Building, 4205 College Drive, Erie, PA, 16563, USA

    Michael Campbell

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  1. Michael Campbell
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Correspondence to Michael Campbell .

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  1. Sunflower and Plant Biology Research, USDA-ARS, Fargo, North Dakota, USA

    James V. Anderson

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Campbell, M. (2015). Chemical Release of Endodormancy in Potato Involves Multiple Mechanisms. In: Anderson, J. (eds) Advances in Plant Dormancy. Springer, Cham. https://doi.org/10.1007/978-3-319-14451-1_16

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