Zhou Yan-Hong, Huang Li-Feng, Yu Jing-Quan
Department of Horticulture, Development and Biotechnology, Agricultural Ministry of China, Zhejiang University, Hangzhou 310029, China.
Zhi Wu Sheng Li Yu Fen Zi Sheng Wu Xue Xue Bao. 2004 Apr;30(2):153-60.
Exposure of cucumber plants to low light (25 degrees C/18 degrees C, 100 micromol m(-2) s(-1)) and low temperature (12 degrees C/12 degrees C, 100 micromol m(-2) s(-1); 7 degrees C/7 degrees C, 100 micromol m(-2) s(-1)) resulted in a retardation or complete inhibition of plant growth, decreases in chlorophyll content, net photosynthetic rate, stomatal conductance and photosynthetic electron transport rate, but an increase in intracellular CO(2) concentration. Significant reversible reduction in Fv/Fm was found in plants after chilling at 7, but not in those after chilling at 12 degrees C. Chilling and low light treatment resulted in a decrease in chlorophyll content, followed by a decreased allocation of photons absorbed by PSII antenna to the photosynthetic electron transport and an increased allocation of thermal dissipation and excessive energy. Plant chilled at 12 degrees C showed higher recovery capacity than those chilled at 7 degrees C upon returning to normal conditions.
将黄瓜植株置于弱光（25℃/18℃，100微摩尔·米⁻²·秒⁻¹）和低温（12℃/12℃，100微摩尔·米⁻²·秒⁻¹；7℃/7℃，100微摩尔·米⁻²·秒⁻¹）条件下，会导致植株生长迟缓或完全受抑制，叶绿素含量、净光合速率、气孔导度和光合电子传递速率降低，但细胞内二氧化碳浓度升高。在7℃低温处理后的植株中发现Fv/Fm有显著的可逆性降低，而在12℃低温处理后的植株中未发现。低温和弱光处理导致叶绿素含量降低，随后PSII天线吸收的光子分配到光合电子传递的比例下降，热耗散和过剩能量的分配增加。在恢复到正常条件时，12℃低温处理的植株比7℃低温处理的植株表现出更高的恢复能力。
