China
Africa
Explore chapters and articles related to this topic
Boron Toxicity
Published in Debasis Bagchi, Manashi Bagchi, Metal Toxicology Handbook, 2020
Anamika Pandey, Mohd. Kamran Khan, Mehmet Hamurcu, Fatma Gokmen Yilmaz, Sait Gezgin
In wheat, as the ear of the wheat spike is completely covered by leaf sheath, the rate of water loss via transpiration is minimized. This leads to the minimal transport of B to the spikes via xylem (Rawson 1996). Then, B and sugars must be supplied through the phloem. Thus, in wheat, B passes through the phloem via the formation of bis-Suc borate complex, and thus, translocate Suc as their main photoassimilate. During the unloading of sucrose, B is also released from this complex and reaches the sink organs. Thus, the formation of bis-Suc borate complex in wheat could be of great significance in maintaining its reproductive growth (Rerkasem and Jamjod 2004; Stangoulis et al. 2010).
Compost and mycorrhizae application as a technique to alleviate Cd and Zn stress in Medicago sativa
Published in International Journal of Phytoremediation, 2021
Anas Raklami, Abdelhay El Gharmali, Youssef Ait Rahou, Khalid Oufdou, Abdelilah Meddich
Regarding sugar contents, this study outcome indicated that the application of the combination compost-AMF had a noticeable effect and showed high sugar values in the case of plants grown under different concentrations of Zn. Our results corroborate with the findings of Kanwal et al. (2015) who reported an increase in total sugars at different concentrations of Cd and Zn in alfalfa plants. On the other side, Shah et al. (2017) highlighted that Taget eserecta cultivation under Cd increased the content of total sugars. Whereas, we have noted that the highest sugar values were recorded in plants subject to AMF-Compost or compost alone in the absence of metallic stress. In contrast, the decrease in sugar content in Cd and Zn treated plants could be due to changes in photoassimilate production. Heavy metals inducing stomatal conductance may negatively affect CO2 diffusion, photosynthetic pigments, and damage chloroplast as observed under heavy metals treatments (Vezza et al.2018; Raklami, Oufdou, et al.2019). These events reduced the photosynthesis rate and consequently photoassimilate production.