Carbon Dioxide Improves Phosphorus Nutrition by Facilitating the Remobilization of Phosphorus From the Shoot Cell Wall in Rice (Oryza sativa).

ABSTRACT: Phosphorus (P) starvation leads to increased reutilization of cell wall P in rice (Oryza sativa). Carbon dioxide (CO₂) is involved not only in plant growth and development but also in the response to abiotic stresses. However, it remains unclear whether CO₂ affects the reutilization of cell wall P in rice when subjected to P deficiency. In the present study, elevated CO₂ (600 μl·L^-1) significantly increased the soluble P content in shoots when compared with ambient CO₂ (400 μl·L^-1). This positive effect was accompanied by an increase of pectin content, as well as an increase of pectin methylesterase (PME) activity, which results in P release from the shoot cell wall, making it available for plant growth. P deficiency

SUBMITTER: Zhu XF 

PROVIDER: S-EPMC6541036 | biostudies-literature | 2019

REPOSITORIES: biostudies-literature