Work

Elevated CO2 mitigates the effects of cadmium stress on vegetable growth and antioxidant systems

Year: 2023

Type: article

Abstract: Previous studies of the effects of elevated CO2 (eCO2) concentrations and heavy metal stress conditions on plant growth and physiology have mostly focused on crops rather than vegetables. In this study, we investigated the effects of Cd stress on the growth and antioxidant system of pak choi (Brassica rapa L.), water spinach (Ipomoea aquatica Forssk.), cherry radish (Raphanus raphanistrum subsp. sativus (L.) Domin) and pepper (Capsicum annuum L.) growing in pots under ambient CO2 (aCO2) or eCO2 conditions. In general, Cd stress reduced plant biomass and SPAD values under aCO2 and eCO2 conditions; however, the reduction was smaller under eCO2. Cd stress significantly reduced vegetable superoxide dismutase (SOD) and catalase (CAT) activities under both aCO2 and eCO2 conditions; however, the decrease in cherry radish and pepper peroxidase and SOD activities and in pak choi SOD and CAT activities was significantly less under eCO2. The Cd content of the edible parts of pak choi, water spinach and pepper was significantly lower under eCO2 than under aCO2. Our data suggest that eCO2 concentrations could be beneficial for the growth of some vegetables and reduce the Cd content.

Source: Plant Soil and Environment

DOI: 10.17221/125/2023-pse

Authors: Xiao Wang, Deyan Li, Xiaohui Song

Institution: Anshun University

Language: English

Topic: Plant responses to elevated CO2

Subfield: Plant Science

Field: Agricultural and Biological Sciences

Domain: Life Sciences

SDG: Zero hunger

Open Access status: gold

Estimated APC paid: $609