文档介绍：
氯化钙对低夜温胁迫下花生光合作用的
调控#
刘轶飞1,2,3,韩晓日1,2,3**
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(1. 土肥资源高效利用国家工程实验室,沈阳 110866;
2. 辽宁省生物炭工程技术研究中心,沈阳 110866;
3. 沈阳农业大学土地与环境学院,沈阳 110866)
摘要:通过人工气候箱盆栽培养试验,分析不同浓度 CaCl2 对低夜温胁迫(8℃)下花生光
合作用相关参数的影响,筛选出低夜温胁迫下提高花生光合作用的适宜 Ca2+浓度。结果显示:
Ca2+主要通过提高夜间低温胁迫后花生叶片的气孔导度,进而缓解低夜温胁迫导致的花生叶
片光合速率的降低,其中,15 mmol/L Ca2+调控效果最好。然后通过叶面喷施 15 mmol/L Ca2+
及其作用抑制剂(Ca2+螯合剂和钙调蛋白拮抗剂)进一步验证 Ca2+对低夜温胁迫下花生光合
作用的调控作用,最终证明钙调蛋白(Ca2+-modulin)作为 Ca2+的受体,它在 Ca2+缓减低夜
温胁迫限制花生光合作用的营养信号传导中起到重要作用。
关键词:植物营养学;花生;Ca2+;低夜温胁迫;光合作用
中图分类号:S1
The regulation of CaCl2 on peanut photosynthesis under the
low night temperature stress
LIU Yifei1,2,3, HAN Xiaori1,2,3
(1. National Engineering Laboratory for Efficient Utilization of Soil and Fertilizer Resources,
ShenYang 110866;
2. Biochar Engineering Technology Research Center of Liaoning Province, ShenYang 110866;
3. College of Land and Environment, Shenyang Agricultural University, ShenYang 110866)
Abstract: The effects of the different levels of CaCl2 on photosynthesis under low night
temperature (8℃) stress in peanut were studied in order to find out the appropriate concentration
of Ca2+ through the artificial climate chamber potted culture test. The results indicated that Ca2+,
by means of improving stomatal conductivity of peanut leaves under low night temperature, may
mitigate the photosynthetic rate decline in the peanut leaves. T