Effect of nitrogen and phosphorus on alleviation of boron toxicity in Puccinellia tenuiflora under the combined stresses of salt and drought. (27th August 2019)

• Record Type: Journal Article
• Authors: Zhen, Meinan; Cui, Mengying; Xia, Jingye; Ma, Chengcang; Liu, Chunguang
• Is Part Of: Journal of plant nutrition. Volume 42:Number 14(2019)
• Page Start: 1594
• Page End: 1604
• Publication Date: 2019-08-27
• Subjects: Boron toxicity -- drought -- nitrogen -- phosphorus -- salt; Plants -- Nutrition -- Periodicals; Plants -- Effect of minerals on -- Periodicals; Deficiency diseases in plants -- Periodicals; 575.76
• DOI: 10.1080/01904167.2019.1628982
• Languages: English
• ISSNs: 0190-4167

Abstract

Abstract: High boron (B) often occurs in saline and arid soils and exerts toxicity to plants. A potting experiment was conducted to examine the effects of nitrogen (N) and phosphorus (P) on alleviating B toxicity in an alkali grass, Puccinellia tenuiflora, in saline and arid soils. As a B-tolerant species, P. tenuiflora grew well in soil with high concentration (300 mg kg −1 ) of B under the combined stresses of salt and drought. N and P have significantly increased plant biomass and decreased B concentrations in plants by 14.5%–31.4% in the shoot and 22.3%–41.5% in the root, respectively. The results indicate that the addition of fertilizer enforced photosynthesis of plant and decreased K + /Na + ratio. Our results suggest that N and P can be used to alleviate B toxicity in P. tenuiflora under the combined stresses of salt and drought.