Effects and mechanism of mineral nutrient and phytohormone on root hair development

【Objectives】 Root hairs are tubular projections from root epidermal cells. Their formation make a significant increase in root surface area, which play important roles in nutrients and water uptake, anchorage, and interaction with soil microorganisms. In this review, we discussed the effects of mineral nutrients (nitrogen, phosphorus, potssium, clacium, iron) and phytohormones (auxin, ethylene, jasmonic acid, strigolactone, brassinosteroids) on root hairs development and their relevant mechanisms. 【Major advances】 The effect of nitrogen on root hairs development is related to jasmonic acid and ethylene. Interaction existes between phosphorus and phytohormones (auxin, ethylene, strigolactone) on root hairs growth. The interaction between auxin and ethylene regulates root hairs development. The effects of jasmonic acid, strigolactone and brassinosteroids partly depend on the way of auxin and ethylene. The balance of auxin/ethylene maybe important on root hairs growth and development.【Suggestions and expectations】 On the basis of the above review, it is important to study the regulatory genes and transcription factors, which will be helpful to deeper understand the effects of mineral nutrient and phytohormone on arbuscular mycorrhizas and root hairs development.