Effects of Nitrogen Deficiency on the Photosynthesis, Chlorophyll <i>a</i> Fluorescence, Antioxidant System, and Sulfur Compounds in <i>Oryza sativa</i>.

ABSTRACT: Decreasing nitrogen (N) supply affected the normal growth of Oryza sativa (O. sativa) seedlings, reducing CO₂ assimilation, stomatal conductance (gs), the contents of chlorophylls (Chl) and the ratio of Chl a/Chl b, but increasing the intercellular CO₂ concentration. Polyphasic chlorophyll a fluorescence transient and relative fluorescence parameters (JIP test) results indicated that N deficiency increased F_o, but decreased the maximum quantum yield of primary photochemistry (F_v/F_m) and the maximum of the IP_phase, implying that N-limiting condition impaired the whole photo electron transport chain from the donor side of photosystem II (PSII) to the end acceptor side of PSI in O. sativa</

SUBMITTER: Chen LH 

PROVIDER: S-EPMC11476759 | biostudies-literature | 2024 Sep

REPOSITORIES: biostudies-literature