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Auxin alters sodium ion accumulation and nutrient accumulation by playing protective role in salinity challenged
Rui Zhang1, Chen Xu1, Zhilong Bao1
1College of Horticulture Science and Engineering, Shandong Agricultural University, Taian, Shandong, 271018, China; State Key Laboratory of Crop Biology, Taian, Shandong, 271018, China.
Abstract:
High salinity in soil affects the strawberry production and fruit quality. Auxin-primed plants have enhanced responses to soil salinization. In this study, we report that exogenous application of IAA can partially relieve stress responses of strawberry seedlings. Cytological analysis showed that the ultrastructure of root tip and leaf cells in strawberry seedlings were altered under high salinity condition, which was partially recovered after the application of IAA. The study showed that the ultrastructure of root tip and leaf cells in strawberry seedlings were altered under salt stress condition, which was partially recovered after the application of IAA. Exogenous IAA ameliorated deleterious effects on seedling growth under salinity were attributed to accelerated Na+ fluxes, decreased the contents of Na+ to maintain the ion homeostasis, protect root growth, and promote the absorption of nutrients for improved photosynthetic efficiency in strawberry.
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