CO2 enrichment enhanced drought resistance by regulating growth, hydraulic conductivity and phytohormone contents in the root of cucumber seedlings
- Drought stress decreased the cucumber root biomass and hydraulic conductivity, the contents of IAA, ZR, and GA, while increased the ABA content, and decreased the transcript levels of aquaporin-related genes CsPIP2-5 and CsPIP2-7.
- CO2 enrichment increased the GA content and the transcript levels of CsPIP2-7, and decreased ABA content and the transcript levels of CsPIP2-4 of cucumber roots under moderate drought stress.
- CO2 enrichment increased the root biomass and improved root hydraulic conductivity and enhanced water absorption and transport capability of cucumber seedlings under drought stress, thereby alleviated the impact of drought stress on cucumber seedlings.
This (paywalled) article appeared on the Plant Physiology and Biochemistry website at https://www.sciencedirect.com/science/article/abs/pii/S0981942820302060