Divergence in response of lettuce (var. ramosa Hort.) to copper oxide nanoparticles/microparticles as potential agricultural fertilizer. Issue 1 (1st January 2019)

• Record Type: Journal Article
• Authors: Wang, Yujing; Lin, Yijie; Xu, Yanwen; Yin, Ying; Guo, Hongyan; Du, Wenchao
• Is Part Of: Environmental pollutants & bioavailability. Volume 31:Issue 1(2019)
• Page Start: 80
• Page End: 84
• Publication Date: 2019-01-01
• Subjects: CuO -- nanoparticle -- microparticle -- lettuce -- nanofertilizer; Pollution -- Periodicals; Bioavailability -- Periodicals; Environmental chemistry -- Periodicals; Pollution; Environmental chemistry; Bioavailability; Periodicals; Electronic journals; 577.27
• DOI: 10.1080/26395940.2019.1578187
• Languages: English
• ISSNs: 2639-5932

Abstract

ABSTRACT: CuO particles can be used as an agrochemical with slow and controlled release of micronutrients but, their size-specific effects have not been well elucidated. In this study, soil-grown lettuce was exposed to CuO nanoparticles ( n CuO) and CuO microparticles ( μ CuO) at 0, 200, and 400 mg Cu/kg for 60 days. At harvest, n CuO released 82.2% and 117.7% more Cu ions, as well as 48.7% and 75.3% more DTPA-extractable Cu than μ CuO at 200 and 400 mg/kg, respectively. CuO treatments induced higher copper accumulated in lettuce roots but did not change shoot's Cu content or cause oxidative stress. n CuO treatments increased shoot's biomass by 16.3–19.1%, while μ CuO showed no improvement to the biomass. The beneficial effects on lettuce by n CuO may be attributed to its modification in plant photosynthesis system with increased transpiration rate and higher stomatal conductance. Results indicate that n CuO can be a promising agrochemical fertilizer to increase crop production.