Fig. 5: Model of the jasmonic acid (JA) feedback loop mediated by the RhHB1/RhLOX4 regulatory module associated with dehydration tolerance in rose flowers. | Horticulture Research

Fig. 5: Model of the jasmonic acid (JA) feedback loop mediated by the RhHB1/RhLOX4 regulatory module associated with dehydration tolerance in rose flowers.

From: The RhHB1/RhLOX4 module affects the dehydration tolerance of rose flowers (Rosa hybrida) by fine-tuning jasmonic acid levels

Fig. 5: Model of the jasmonic acid (JA) feedback loop mediated by the RhHB1/RhLOX4 regulatory module associated with dehydration tolerance in rose flowers.The alternative text for this image may have been generated using AI.

Dehydration-induced elevated JA-Ile levels inhibit rose petal expansion during rehydration by reducing the capacity for osmotic adjustment. Dehydration- and MeJA-induced RhHB1 expression directly suppressed the expression of the JA biosynthesis gene RhLOX4, resulting in a decrease in JA-Ile accumulation. The red arrow represents increased JA-Ile levels during dehydration

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