Bowen Huang, Enyi Xie^*, Yu Ran, Xinyi Chen, Yongjian Huang, Jianjun Cui^*

Phyton-International Journal of Experimental Botany, Vol.92, No.1, pp. 251-269, 2023, DOI:10.32604/phyton.2022.022672

Abstract In aquaculture, high-density seaweed farming brings higher economic benefits but also increases outbreaks of diatom felt. The effective control of diatom felt in high-density seaweed farming has always been a research hotspot. This study selected two potential allelochemicals 2-hydroxycinnamic acid and quinic acid to explore their effects on a diatom Nitzschia closterium and an economic seaweed Monostroma nitidum. The results showed that 2-hydroxycinnamic acid had better inhibitory effects than quinic acid on the growth, pigment content and photosynthetic efficiency of N. closterium. Their half-maximal inhibitory concentrations at 120 h (IC_{50–120 h}) were 0.9000 and 1.278 mM, respectively. Additionally, these allelochemicals… More >

Ekhlaque A. Khan^1,2,*, Hamdino M. I. Ahmed³, Meena Misra¹, Pallavi Sharma^1,4, Amarendra N. Misra¹

Phyton-International Journal of Experimental Botany, Vol.91, No.5, pp. 959-973, 2022, DOI:10.32604/phyton.2022.018708

Abstract Cadmium (Cd), a life threatening hazardous heavy metal is abundant in nature. Cd amounts are greater in leaves than other plant parts, and it shows considerable effects on photosynthesis. Nitric oxide (NO), a free radical present in living organisms, is now known as an important signaling molecule playing various physiological processes in plants. In this study, the possible ameliorative effect of NO on photosynthesis was examined on pea seedlings grown under Cd stress. Results showed that chlorophyll, net photosynthetic rate, transpiration rate, stomatal conductance, photochemical efficiency of Photosystem II and Photosystem I decreased, and Fo and non-photochemical parameters for PSII… More >