Exogenous calcium enhances the physiological status and photosynthetic capacity of rose under drought stress

作     者：Xiaojuan Zhao Shang Lin Shuang Yu Yichang Zhang Lin Su Lifang Geng Chenxia Cheng Xinqiang Jiang Xiaojuan Zhao;Shang Lin;Shuang Yu;Yichang Zhang;Lin Su;Lifang Geng;Chenxia Cheng;Xinqiang Jiang

作者机构：College of Landscape Architecture and ForestryQingdao Agricultural UniversityQingdaoShandong 266000China College of HorticulturalQingdao Agricultural UniversityQingdaoShandong 266000China 

出 版 物：《Horticultural Plant Journal》 (园艺学报（英文版）)

年 卷 期：2024年第10卷第3期

页      面：853-865页

核心收录：

学科分类：0710[理学-生物学] 090706[农学-园林植物与观赏园艺] 0907[农学-林学] 09[农学] 0902[农学-园艺学] 

基　　金：supported by the National Key Research and Development Program of China(Grant No.2018YFD1000400) Innovative Program for Graduate Student of Qingdao Agricultural University(Grant No.QNYCX22045) 

主　　题：Rosa hybrida L. Exogenous calcium Drought stress Physiological index Photosynthetic capacity 

摘      要：Drought(water shortage)can substantially limit the yield and economic value of rose plants(Rosa spp.).Here,we characterized the effect of exogenous calcium(Ca^(2+))on the antioxidant system and photosynthesis-related properties of rose under polyethylene glycol 6000(PEG6000)-induced drought *** levels,as well as leaf and root biomass,were significantly reduced by drought;drought also had a major effect on the enzymatic antioxidant system and increased concentrations of reactive oxygen *** of exogenous Ca^(2+)increased the net photosynthetic rate and stomatal conductance of leaves,enhanced water-use efficiency,and increased the length and width of stomata following exposure to ***-specific physiological responses were observed under different concentrations of Ca^(2+).Application of 5 mmol·L^(-1)Ca^(2+)promoted photosynthesis and antioxidant activity in the leaves,and application of 10 mmol·L^(-1)Ca^(2+)promoted antioxidant activity in the *** of exogenous Ca^(2+)greatly enhanced the phenotype and photosynthetic capacity of potted rose plants following exposure to drought ***,our findings indicate that the application of exogenous Ca^(2+)enhances the drought resistance of roses by promoting physiological adaptation and that it could be used to aid the cultivation of rose plants.