The low-oxygen-induced NAC domain transcription factor ANAC102 affects viability of Arabidopsis seeds following low-oxygen treatment<sup>1[W][OA]</sup>
2009
Christianson, JA | Wilson, IW | Llewellyn, DJ | Dennis, ES
Low-oxygen stress imposed by field waterlogging is a serious impediment to plant germination and growth. Plants respond to waterlogging with a complex set of physiological responses regulated at the transcriptional, cellular, and tissue levels. The Arabidopsis(Arabidopsis thaliana) NAC domain-containing gene ANAC102was showntobeinduced under 0.1%oxygen within 30 min in both roots and shoots as well as in 0.1% oxygen-treated germinating seeds. Overexpression of ANAC102 altered the expression of a number of genes, including many previously identified as being low-oxygen responsive. Decreasing ANAC102 expression had no effect on global gene transcription in plants but did alter expression patterns in low-oxygen-stressed seeds. Increasing ordecreasing the expression of ANAC102 did not affect adult plant survival oflow-oxygen stress. Decreased ANAC102 expression significantly decreased germination efficiency following a 0.1% oxygen treatment, but increased expression had no effecton germination. This protective roleduring germination appearedto bespecificto low-oxygen stress, implicating ANAC102 as an important regulator of seed germination under flooding. © 2009 American Society of Plant Biologists.
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