【高浓度CO2与暗呼吸】Xin Li Guanqun Zhang Bo Sun Shuai Zhang Yiqing Zhang Yangwenke Liao Yanhong Zhou Xiaojian Xia Kai Shi & Jingquan Yu. Stimulated Leaf Dark Respiration in Tomato in an Elevated Carbon Dioxide Atmosphere. Scientific Reports 3 Article number: 3433 doi:10.1038-srep03433

Abstract

It is widely accepted that leaf dark respiration is a determining factor for the growth and maintenance of plant tissues and the carbon cycle. However the underlying effect and mechanism of elevated CO₂ concentrations ([CO₂]) on dark respiration remain unclear. In this study tomato plants grown at elevated [CO₂] showed consistently higher leaf dark respiratory rate as compared with ambient control plants. The increased respiratory capacity was driven by a greater abundance of proteins carbohydrates and transcripts involved in pathways of glycolysis carbohydrate metabolism the tricarboxylic acid cycle and mitochondrial electron transport energy metabolism. This study provides substantial evidence in support of the concept that leaf dark respiration is increased by elevated [CO₂] in tomato plants and suggests that the increased availability of carbohydrates and the increased energy status are involved in the increased rate of dark respiration in response to elevated [CO₂].

【植物与土壤甲烷氧化】Xiaoqi Zhou Simeon J. Smaill  and Peter W. Clinton. Methane oxidation needs less stressed plants. Trends in Plant Science Volume 18 Issue 12 657-659 23 October 2