Table I. Overview of studies on aox mutants.

AS, Antisense; ir, RNA interference construct harboring a fragment of a gene in an inverted repeat orientation; OE, overexpression; RNAi, RNA interference; rpoTmp, T3/T7 bacteriophage-type RNA polymerase, mitochondrial and plastidial. So far, in no case could compensation by another isoform be observed.

Plant Species	AOX Isoforms	Mutants	References
Arabidopsis thaliana	AOX1A to AOX1D, AOX2	aox1a	Giraud et al. (2008); Watanabe et al. (2008, 2010); Strodtkötter et al. (2009); Yoshida et al. (2010, 2011a, 2011b, 2011c); Gandin et al. (2012, 2014); Vishwakarma et al. (2014, 2015); Keunen et al. (2015)
		aox1a/rpoTmp	Kühn et al. (2015)
		AOX1A AS	Fiorani et al. (2005); Umbach et al. (2005); Florez-Sarasa et al. (2011)
Chlamydomonas reinhardtii	AOX1, AOX2	AOX1 RNAi	Mathy et al. (2010)
Glycine max	AOX1A, AOX2a, AOX2b	GmAOX2b AS	Chai et al. (2010)
Nicotiana tabacum	AOX1A, AOX1B, AOX2	AOX1a RNAi	Wang et al. (2011); Cvetkovska and Vanlerberghe (2012, 2013); Wang and Vanlerberghe (2013); Cvetkovska et al. (2014); Dahal et al. (2014)
		AOX1A AS	Vanlerberghe et al. (1997); Maxwell et al. (1999); Parsons et al. (1999); Robson and Vanlerberghe (2002); Guy and Vanlerberghe (2005); Sieger et al. (2005); Zhang et al. (2009); Dahal et al. (2017); Dahal and Vanlerberghe (2017)
		AOX1A OE	Guy and Vanlerberghe (2005); Dahal et al. (2017); Dahal and Vanlerberghe (2017)
Nicotiana attenuata	AOX1A, AOX1B, AOX2	irAOX	Zhang et al. (2012)
Solanum lycopersicum	AOX1A to AOX1C, AOX2	AOX1A RNAi	Xu et al. (2012)