Regulation of extracellular ATP onchlorophyll content and fluorescence characteristics of Angelica sinensis seedlings under drought and low temperature stress.
10.19540/j.cnki.cjcmm.20190319.101
- Author:
Mu-Dan ZHANG
1
;
Yuan FENG
1
;
Zhen-Zhen SHI
1
;
Jia-Xin CAO
1
;
Ling-Yun JIA
1
;
Han-Qing FENG
1
Author Information
1. College of Life Science, Northwest Normal University Lanzhou 730070, China.
- Publication Type:Journal Article
- Keywords:
Angelica sinensis seedlings;
chlorophyll content;
chlorophyll fluorescence parameters;
drought stress;
extracellular ATP;
low temperature stress
- MeSH:
Adenosine Triphosphate;
pharmacology;
Angelica sinensis;
chemistry;
physiology;
Chlorophyll;
analysis;
Cold Temperature;
Droughts;
Fluorescence;
Photosynthesis;
Plant Leaves;
chemistry;
Seedlings;
chemistry;
physiology;
Stress, Physiological;
Water
- From:
China Journal of Chinese Materia Medica
2019;44(7):1305-1313
- CountryChina
- Language:Chinese
-
Abstract:
As an important signal molecule, extracellular ATP(eATP) can regulate many physiological and biochemical responses to plant stress. In this study, the regulation of extracellular ATP(eATP) on chlorophyll content and chlorophyll fluorescence parameters of Angelica sinensis seedlings were studied under drought and low temperature stress. The results showed that all the chlorophyll content, the actual photochemical efficiency [Y(Ⅱ)], the electron transfer rate(ETR), the photochemical quenching coefficient(qP and qL) of A. sinensis leaves were significantly decreased under drought and low temperature stress, respectively. At the same time, non-photochemical quenching(NPQ and qN) were also all significantly increased, respectively. The application of eATP alleviated the decrease of chlorophyll content, Y(Ⅱ), ETR, qP and qL of A. sinensis leaves under drought and low temperature stress, and eliminated the increase of qN and NPQ. The results indicated that eATP could effectively increase the open ratio of PSⅡ reaction centers, and improve the electron transfer rate and light energy conversion efficiency of PSⅡ of A. sinensis leaves under drought and low temperature stress. It is beneficial to enhance the chlorophyll synthesis and the adaptability of PSⅡ about A. sinensis seedlings to drought and low temperature stress.
