Skip to main content
Fig. 8 | BMC Plant Biology

Fig. 8

From: Heterologous expression of Arabidopsis thaliana rty gene in strawberry (Fragaria × ananassa Duch.) improves drought tolerance

Fig. 8

Molecular mechanism underlying rty gene improving hormone-mediated drought tolerance in plant. In plants, rty promotes IAA and ABA accumulation. The transcript levels of IAA biosynthetic genes, including AAO1, YUC1, and YUC3, increase auxin accumulation. The auxin induces transcripts of related response genes including PIN1 and ARF7, and the products of excess roots and increases the density of leaf trichomes, which keep moisture retention. The transcript levels of ABA biosynthetic genes including ABI1 and ABA8, improve ABA accumulation. The ABA induces transcripts of related response genes including PYL9 and PP2C, and promote stomatal closure in the plants, which increase the water use efficiency and decreased the water loss rate. Plant photosynthesis, respiration, and transpiration are all affected by the rty gene. These changes contributed to the increased tolerance of the plants to drought stress

Back to article page