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Fig. 12 | BMC Plant Biology

Fig. 12

From: Jasmonate promotes auxin-induced adventitious rooting in dark-grown Arabidopsis thaliana seedlings and stem thin cell layers by a cross-talk with ethylene signalling and a modulation of xylogenesis

Fig. 12

Model of the cross-talk among IAA, JA and ET in the realization of AR-formation and xylogenesis in IBA + Kin seedlings and TCLs of Arabidopsis grown under continuous darkness. Exogenous IBA induces IAA formation. IAA interacts with JA at early and late synthesis levels and at perception level. The capacity of the tissues to respond to JA also involves a cross-talk with ET-signalling through EIN3EIL1. The morphogenic response changes depending on JA levels. AR-formation needs low JA levels and does not require ARF6 and ARF8 changes in expression, whereas the competitive program of xylogenesis needs high JA-levels and the activity of ARF17. Further details on the text

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