Effects of Foliage Spraying with Sodium Bisulfite on the Photosynthesis of Orychophragmus violaceus

Abstract

Sulphurous acid derived from sulfur dioxide (SO2) emission leads to the pollution of irrigation water and the inhibition of plant growth. The safe concentration threshold of NaHSO3 in plants should be clarified to promote agricultural production. In this study, Orychophragmus violaceus seedlings were used as experimental materials and five NaHSO3 concentrations (i.e., 0, 1, 2, 5, 10 mmol·L−1) were simultaneously sprayed on the leaf surface of different seedlings separately. Leaf physiology responses under different concentrations were analyzed. The NaHSO3 did not promote photosynthesis in O. violaceus under the 1 and 2 mmol·L−1 treatments. It was conducive to the net photosynthetic rate (PN), photorespiration rate (Rp), chlorophyll content, actual photochemical quantum yield (YII) and photochemical quenching (qP) under the 5 mmol·L−1 treatment. However, quantum yield of regulated energy dissipation (YNPQ) and nonphotochemical quenching (NPQ) were inhibited. Under the 10 mmol·L−1 treatment, PN, chlorophyll content, YII, qP, dark respiration rate (Rd) and electron transport rate (ETR) showed significant decreases, while the photorespiration portion (Sp) significantly increased. Our results demonstrated that NaHSO3 provided a sulfur source for plant growth and interfered with the redox reaction of the plant itself, and its role as a photorespiratory inhibitor might be masked.

Evaluation of Sodium Metabisulphite Salt (SMBS) as a Fungicide on Common Maize (Zea mays) Rust Disease (Puccinia sorghi) and Its Effect on Wistar Rat Health

“…There was a significant increase in the growth parameters measured in the maize variety 29 . Sodium Metabisulphite Salt (SMBS) at concentration levels of 10 and 15 g/L were discovered to have reduced the incidence and severity of common rust of maize, respectively in the two varieties as a result the sodium metabisulphite salt was broken down to release sulfur dioxide, which bounded to carbonyl compounds of an oxidized fat compound in the maize plant to release strong antioxidative action on the fungi pathogen protein layer present in the leaves of the maize varieties.…”

E3 ligase BRUTUS Is a Negative Regulator for the Cellular Energy Level and the Expression of Energy Metabolism-Related Genes Encoded by Two Organellar Genomes in Leaf Tissues

“…The light induction curves of electron transport rate (ETR II ), effective quantum yield of PSII (Y II ) were measured by a Imaging-PAM chlorophyll fluorometer (Heinz Walz GmbH, Germany) as described previously ( Li et al, 2021 ).…”

The Impact of Ethical Leadership on Financial Performance: The Mediating Role of Environmentally Proactive Strategy and the Moderating Role of Institutional Pressure

“…For agritech firms, the most important issues are to meet the expectations of various stakeholders and to increase the firm's financial performance [5][6][7], as the process of agricultural production will lead to huge pollution [8][9][10] to form a research gap. Therefore, to fill this gap, the present study describes the relationship between the ethical leadership of the chief executive officer and the firm financial performance from the perspective of environmentally proactive strategy adoption.…”