Maize (Zea mays L.) planted at higher density utilizes dynamic light more efficiently.

Autor: Zheng B; College of Agronomy, Shandong Agricultural University, Tai'an, Shandong, P. R. China., Li YT; College of Agronomy, Shandong Agricultural University, Tai'an, Shandong, P. R. China., Wu QP; Jining Academy of Agricultural Sciences, Shandong, P. R. China., Zhao W; College of Agronomy, Shandong Agricultural University, Tai'an, Shandong, P. R. China., Ren TH; College of Agronomy, Shandong Agricultural University, Tai'an, Shandong, P. R. China., Zhang XH; College of Agronomy, Shandong Agricultural University, Tai'an, Shandong, P. R. China., Li G; College of Agronomy, Shandong Agricultural University, Tai'an, Shandong, P. R. China., Ning TY; College of Agronomy, Shandong Agricultural University, Tai'an, Shandong, P. R. China., Zhang ZS; College of Life Sciences, Shandong Agricultural University, Tai'an, Shandong, P. R. China.
Jazyk: angličtina
Zdroj: Plant, cell & environment [Plant Cell Environ] 2023 Nov; Vol. 46 (11), pp. 3305-3322. Date of Electronic Publication: 2023 Jul 24.
DOI: 10.1111/pce.14673
Abstrakt: In nature, plants are exposed to a dynamic light environment. Fluctuations in light decreased the photosynthetic light utilization efficiency (PLUE) of leaves, and much more severely in C 4 species than in C 3 species. However, little is known about the plasticity of PLUE under dynamic light in C 4 species. Present study focused on the influence of planting density to the photosynthesis under dynamic light in maize (Zea mays L.), a most important C 4 crop. In addition, the molecular mechanism behind photosynthetic adaptation to planting density were also explored by quantitative proteomics analysis. Results revealed that as planting density increases, maize leaves receive less light that fluctuates more. The maize planted at high density (HD) improved the PLUE under dynamic light, especially in the middle and later growth stages. Quantitative proteomics analysis showed that the transfer of nitrogen from Rubisco to RuBP regeneration and C 4 pathway related enzymes contributes to the photosynthetic adaptation to lower and more fluctuating light environment in HD maize. This study provides potential ways to further improve the light energy utilization efficiency of maize in HD.
(© 2023 John Wiley & Sons Ltd.)
Databáze: MEDLINE
Externí odkaz: