Normally authors describes there role in ROS scavenging and believed that plant cells exposed to stress increase there activities in cell.
ROS play crucial role in organogenesis. Antioxidant enzymes regulate titer of ROS in the cellular milieu. Therefore, I believe antioxidant enzymes must have role in organogenesis.
The following ref. would be of help to you:
Role of free radicals and antioxidants in in vitro morphogenesis. In: Reactive oxygen species and antioxidants in higher plants. Ed. S. Dutta Gupta, CRC Press, pp. 229-247, 2010.
Apart from their role in countering ROS, they could also have a role in inhibition of polyphenol oxidation and the associated production of quinones which are inhibitors of plant growth and have been linked to tissue necrosis in plant tissue culture.
see 1. http://www.academicjournals.org/article/article1380127753_Cheniany%20et%20al.pdf
and
2. http://scholar.google.com/scholar_url?url=http://www.researchgate.net/profile/Loic_Lepiniec/publication/6637454_Flavonoid_oxidation_in_plants_from_biochemical_properties_to_physiological_functions/links/0912f50f7122ba3aa3000000.pdf&hl=en&sa=X&scisig=AAGBfm06zMrxz32KEJFZy5MJzPzTCqtH9A&nossl=1&oi=scholarr
Article Flavonoid oxidation in plants: From biochemical properties t...
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