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- Title
植物叶肉导度的测定方法及其研究进展.
- Authors
巩晓颖; 马薇婷; 余咏枝; 李 蕾
- Abstract
Mesophyll conductance (gm), the total conductance of CO2 diffusion from substomatal cavity to the site of carboxylation within chloroplast, is a major limiting factor for photosynthesis and a key parameter for improving photosynthetic resource use efficiency of crops. Online 13C discrimination method is an important method for plant eco-physiological studies and a well-established method for measuring gm of C3 plants, although it has not been widely used due to challenges in methodology and high demands on experimental facilities. In this review, we summarized the characteristics of commonly used methods for gm, introduced the basic theory of the online 13C discrimination method, namely Farquhar's photosynthetic 13C discrimination model; systematically introduced the practical measurements, equations and the components of facilities; and reviewed the drivers for variation in gm of C3 plants. At the last part, we discussed the outlook of the development of methodology, new experimental protocols, and applications in measurement scenarios.
- Subjects
CHLOROPHYLL spectra; CARBON isotopes; PHOTOSYNTHESIS; CARBOXYLATION; MASS spectrometry; GAS exchange in plants; DIFFUSION
- Publication
Yingyong Shengtai Xuebao, 2020, Vol 31, Issue 6, p1882
- ISSN
1001-9332
- Publication type
Article
- DOI
10.13287/j.1001-9332.202006.010