Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1029/2021JG006682 |
Potassium Isotopes in Herbaceous Plants: A Potential New Tool for C3 and C4 Plant Research | |
Qu, Rui; Han, Guilin | |
通讯作者 | Han, GL |
来源期刊 | JOURNAL OF GEOPHYSICAL RESEARCH-BIOGEOSCIENCES
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ISSN | 2169-8953 |
EISSN | 2169-8961 |
出版年 | 2022 |
卷号 | 127期号:11 |
英文摘要 | Plants play a critical role in the surficial environment, influencing energy transfer, the global carbon cycle, and climate change. Potassium (K) controls many essential plant physiological features like photosynthesis, cell osmosis adjustment, and enzyme activity. However, few plant species of K isotopes have been investigated and knowledge regarding the mechanism of isotopic fractionations in biological processes is still limited. This study investigated foliar K isotopic compositions of C-3 and C-4 vegetation and soil in the typical karst region of Guizhou Province, Southwest China. The results showed that: (a) The delta K-41 of soil ranged from -0.04 parts per thousand to -0.08 parts per thousand, with no K isotope ratios change between topsoil and subsoil. (b) Foliar delta K-41 of C-3 vegetation ranged from -1.06 +/- 0.06 parts per thousand to -0.15 +/- 0.06 parts per thousand and foliar delta K-41 of C-4 vegetation varied from 0.28 +/- 0.05 parts per thousand to 1.15 +/- 0.06 parts per thousand. (c) Foliar delta K-41 was negatively related to foliar K concentration (R-2 = 0.78; p < 0.01); The significant K isotope differences between C-3 and C-4 vegetation are likely attributed to their different mechanisms for drought stress or their different foliar K concentration. This study firstly documented the potential of K isotopes as a novel tool for biological processes to distinguish between C-3 and C-4 plants and also shed light on the potential future application of K isotope signatures in soil-plant interactions. |
英文关键词 | potassium isotopes tracer C-3 and C-4 plant Southwest China |
类型 | Article |
语种 | 英语 |
收录类别 | SCI-E |
WOS记录号 | WOS:000878303600001 |
WOS关键词 | MC-ICP-MS ; RICE ORYZA-SATIVA ; ROCKY DESERTIFICATION ; FOLIAR-DELTA ; KARST FOREST ; ASH CONTENT ; LEAVES ; MAGNESIUM ; NUTRIENT ; CALCIUM |
WOS类目 | Environmental Sciences ; Geosciences, Multidisciplinary |
WOS研究方向 | Environmental Sciences & Ecology ; Geology |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/393462 |
推荐引用方式 GB/T 7714 | Qu, Rui,Han, Guilin. Potassium Isotopes in Herbaceous Plants: A Potential New Tool for C3 and C4 Plant Research[J],2022,127(11). |
APA | Qu, Rui,&Han, Guilin.(2022).Potassium Isotopes in Herbaceous Plants: A Potential New Tool for C3 and C4 Plant Research.JOURNAL OF GEOPHYSICAL RESEARCH-BIOGEOSCIENCES,127(11). |
MLA | Qu, Rui,et al."Potassium Isotopes in Herbaceous Plants: A Potential New Tool for C3 and C4 Plant Research".JOURNAL OF GEOPHYSICAL RESEARCH-BIOGEOSCIENCES 127.11(2022). |
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