| Analysis of cuticular wax components and crystal structures on the leaves of broomcorn millet |
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| DOI：10.7606/j.issn.1000-7601.2020.06.02 |
| Key Words: broomcorn millet leaf cuticular wax component wax crystal structure primary alcohol |
| Author Name | Affiliation | | LI Rui | State Key Laboratory of Crop Stress Biology for Arid Areas, College of Agronomy, Northwest A&F University, Yangling, Shaanxi 712100, China | | LIU Xiaoyu | State Key Laboratory of Crop Stress Biology for Arid Areas, College of Agronomy, Northwest A&F University, Yangling, Shaanxi 712100, China | | LIU Le | State Key Laboratory of Crop Stress Biology for Arid Areas, College of Agronomy, Northwest A&F University, Yangling, Shaanxi 712100, China | | WEI Zhengyang | State Key Laboratory of Crop Stress Biology for Arid Areas, College of Agronomy, Northwest A&F University, Yangling, Shaanxi 712100, China | | JIA Yatao | State Key Laboratory of Crop Stress Biology for Arid Areas, College of Agronomy, Northwest A&F University, Yangling, Shaanxi 712100, China | | GUAN Lulu | State Key Laboratory of Crop Stress Biology for Arid Areas, College of Agronomy, Northwest A&F University, Yangling, Shaanxi 712100, China | | WU Hongqi | State Key Laboratory of Crop Stress Biology for Arid Areas, College of Agronomy, Northwest A&F University, Yangling, Shaanxi 712100, China | | LI Chunlian | State Key Laboratory of Crop Stress Biology for Arid Areas, College of Agronomy, Northwest A&F University, Yangling, Shaanxi 712100, China | | WANG Yong | State Key Laboratory of Crop Stress Biology for Arid Areas, College of Agronomy, Northwest A&F University, Yangling, Shaanxi 712100, China | | WANG Zhonghua | State Key Laboratory of Crop Stress Biology for Arid Areas, College of Agronomy, Northwest A&F University, Yangling, Shaanxi 712100, China |
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| Abstract: |
| During plant growth and development, cuticular wax can protect plants from exotic biotic and abiotic stresses. In order to understand the cuticular wax composition and crystal structure at different growth and development stages of broomcorn millet, we used five varieties of broomcorn millet (Yushu 1, Yanshu 7, Longmi 8, Jinshu 9, and Ningmi 10) as materials to analyze the cuticular wax components by gas chromatography (GC), and observed the structure of cuticular wax crystal by scanning electron microscope. Finally, the total wax content of high wax variety, Yushu 1, was 1.4 times that of low wax variety Ningmi 10. Twenty compounds including alkanes, primary alcohols, and triterpenoids were identified by GC-MS, and the carbon chain length of these components were ranged from C22-C35. The content of primary alcohols was the highest in broomcorn millet leaves accounting for 67.46% of the total and the main compound was C32 alcohol, which accounted for 82.73% of primary alcohols. The wax components of broomcorn millet were similar at different growth stages, which contained primary alcohols, alkanes, and triterpenoids, and the total amount of wax increased with the growth. Based on the observation using scanning electron microscope, the wax crystal structures with platelets generally existed in the leaves of broomcorn millet. |
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