Acclimation mechanisms to elevated CO2 in plants

Ciência Rural

Streck, Nereu Augusto¹  Walter, Lidiane Cristine²  Rosa, Hamilton Telles² 

[1]Universidade Federal de Santa Maria, Santa Maria, BR

[2]Instituto Federal de Educação, Ciência e Tecnologia Farroupilha, Santo Augusto, BR

关键词: photosynthesis;    climate change;    adaptation;   

DOI  :  10.1590/0103-8478cr20140527

学科分类：农业科学（综合）

来源: Universidade Federal de Santa Maria * Centro de Ciencias Rurais

【 摘 要 】

The plant metabolism is altered with increasing of CO2 concentration in the atmosphere. Initially the photosynthetic rate increases by the greater CO2 available, after some time there is some adaptations in order to return to the initial equilibrium, characterizing acclimation. The objective of this review was to describe the acclimation mechanisms in plants to elevated CO2concentration. In the short term, enzymes and other important substances for photosynthesis are scarce by accelerated metabolism. In addition, excess starch of high photosynthetic rate, accumulated within chloroplasts can impair photosynthesis. A longer period there is a decrease in productive advantage on high CO2 environment and biomass distribution that favors vegetative parts. Acclimation in the long term is related to the plant ability to increase its storage compartments.

【 授权许可】

Unknown