What is the effect of ascorbic acid on Arabidopsis?

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fatal error

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fatal error

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Yuan-Yeu Yau

Hi Keli,

This is a side note, not directly to your question.

I know your research is focusing on 'root study and measurement' from previous questions you asked. We were just talking about 'Arabidopsis root growth in MS medium' in the other site of ReasearGate. I attached this paper for you. I think it should be very useful as a guide for people who are doing root measurement study.

P. Pardha-Saradhi

Dear Keli,

You know that ascorbic acid is a good antioxidant. However, any biomolecule in excess will limit plant growth and development. That is the precise reason why living systems evolved feed-back mechanisms to maintain desirable levels of various biomolecules. Can you please let me know, why you want to suppress root growth specifically with ascorbic acid?

Philip Lintilhac

An older paper by Lewis Feldman (1990s?) showed that ascorbic acid caused the de-repression of mitotic activity in the quiescent center, thereby disorganizing the root apical meristem. I don't have it in front of me so I don't recall the plant, but I think the effect can be quite general. The theory at the time was that IAA had the effect of repressing cell divisions in the root tip, and that Ascorbate blocked this effect.