Lower Light Intensities Increase Shoot Germination with Improved Leaf Biosynthesis in Ma Bamboo (<i>Dendrocalamus latiflorus</i> Munro)
Ma bamboo (<i>Dendrocalamus latiflorus</i> Munro) is a major bamboo species cultivated in southern China with high economic, ecological, and social value. However, highly dense forests and reasonable structures in bamboo forests have unclear and adverse effects on light transmittance and...
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| Format: | Article |
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MDPI AG
2022-10-01
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| Series: | Forests |
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| Online Access: | https://www.mdpi.com/1999-4907/13/10/1723 |
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| author | Lili Fan Bingjun Li Yongzhen Han Liguang Chen Tianyou He Yushan Zheng Jundong Rong |
| author_facet | Lili Fan Bingjun Li Yongzhen Han Liguang Chen Tianyou He Yushan Zheng Jundong Rong |
| author_sort | Lili Fan |
| collection | DOAJ |
| description | Ma bamboo (<i>Dendrocalamus latiflorus</i> Munro) is a major bamboo species cultivated in southern China with high economic, ecological, and social value. However, highly dense forests and reasonable structures in bamboo forests have unclear and adverse effects on light transmittance and forest productivity that are not adequately understood. Here, we investigated varied light-intensity treatments during different phases of shoot emergence and development on Ma bamboo shoots. The amount of total chlorophyll, carotenoids, gas exchange indicators, and biosynthetic products were also compared to explore the response mechanism of shoot germination on downstream biochemical pathways. We found that compared to the L0 treatment (full sunlight), the number of germinated bamboo shoots under the L1 treatment (40% light) increased significantly by 44.07% and 101.32% in the shooting initial-phase and metaphase, respectively (<i>p</i> < 0.05). Additionally, the net photosynthetic rate (P<sub>n</sub>) during the shooting initial-phase and metaphase was the highest in the L1 treatment, while the L4 (10% light) and L0 treatments inhibited chlorophyll synthesis. Further, the accumulation of leaf carbon (C) and nitrogen (N) was higher in the L1 treatment than in other treatments. Ma bamboo showed rich carbohydrate contents under L0 and L1 treatments in the shooting initial-phase and metaphase. Principal component analysis (PCA) also revealed that the L1 treatment positively correlated with bamboo shoot germination and biochemical activity during the shooting periods. Ultimately, our data suggest that the L1 treatment is the most optimal for promoting bamboo shoot germination, providing a scientific basis for cultivating shoot-used bamboo forests in southern China. |
| first_indexed | 2024-03-09T20:12:27Z |
| format | Article |
| id | doaj.art-3d3856eba72a41e9aeb4850bfaeceff6 |
| institution | Directory Open Access Journal |
| issn | 1999-4907 |
| language | English |
| last_indexed | 2024-03-09T20:12:27Z |
| publishDate | 2022-10-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Forests |
| spelling | doaj.art-3d3856eba72a41e9aeb4850bfaeceff62023-11-24T00:10:44ZengMDPI AGForests1999-49072022-10-011310172310.3390/f13101723Lower Light Intensities Increase Shoot Germination with Improved Leaf Biosynthesis in Ma Bamboo (<i>Dendrocalamus latiflorus</i> Munro)Lili Fan0Bingjun Li1Yongzhen Han2Liguang Chen3Tianyou He4Yushan Zheng5Jundong Rong6College of Forestry, Fujian Agriculture and Forestry University, Fuzhou 350002, ChinaCollege of Forestry, Fujian Agriculture and Forestry University, Fuzhou 350002, ChinaCollege of Forestry, Fujian Agriculture and Forestry University, Fuzhou 350002, ChinaCollege of Forestry, Fujian Agriculture and Forestry University, Fuzhou 350002, ChinaCollege of Landscape Architecture, Fujian Agriculture and Forestry University, Fuzhou 350002, ChinaCollege of Forestry, Fujian Agriculture and Forestry University, Fuzhou 350002, ChinaCollege of Forestry, Fujian Agriculture and Forestry University, Fuzhou 350002, ChinaMa bamboo (<i>Dendrocalamus latiflorus</i> Munro) is a major bamboo species cultivated in southern China with high economic, ecological, and social value. However, highly dense forests and reasonable structures in bamboo forests have unclear and adverse effects on light transmittance and forest productivity that are not adequately understood. Here, we investigated varied light-intensity treatments during different phases of shoot emergence and development on Ma bamboo shoots. The amount of total chlorophyll, carotenoids, gas exchange indicators, and biosynthetic products were also compared to explore the response mechanism of shoot germination on downstream biochemical pathways. We found that compared to the L0 treatment (full sunlight), the number of germinated bamboo shoots under the L1 treatment (40% light) increased significantly by 44.07% and 101.32% in the shooting initial-phase and metaphase, respectively (<i>p</i> < 0.05). Additionally, the net photosynthetic rate (P<sub>n</sub>) during the shooting initial-phase and metaphase was the highest in the L1 treatment, while the L4 (10% light) and L0 treatments inhibited chlorophyll synthesis. Further, the accumulation of leaf carbon (C) and nitrogen (N) was higher in the L1 treatment than in other treatments. Ma bamboo showed rich carbohydrate contents under L0 and L1 treatments in the shooting initial-phase and metaphase. Principal component analysis (PCA) also revealed that the L1 treatment positively correlated with bamboo shoot germination and biochemical activity during the shooting periods. Ultimately, our data suggest that the L1 treatment is the most optimal for promoting bamboo shoot germination, providing a scientific basis for cultivating shoot-used bamboo forests in southern China.https://www.mdpi.com/1999-4907/13/10/1723gradient light environmentbamboo shoot germinationphotosynthetic characteristicsphotosynthetic productsendogenous hormones |
| spellingShingle | Lili Fan Bingjun Li Yongzhen Han Liguang Chen Tianyou He Yushan Zheng Jundong Rong Lower Light Intensities Increase Shoot Germination with Improved Leaf Biosynthesis in Ma Bamboo (<i>Dendrocalamus latiflorus</i> Munro) Forests gradient light environment bamboo shoot germination photosynthetic characteristics photosynthetic products endogenous hormones |
| title | Lower Light Intensities Increase Shoot Germination with Improved Leaf Biosynthesis in Ma Bamboo (<i>Dendrocalamus latiflorus</i> Munro) |
| title_full | Lower Light Intensities Increase Shoot Germination with Improved Leaf Biosynthesis in Ma Bamboo (<i>Dendrocalamus latiflorus</i> Munro) |
| title_fullStr | Lower Light Intensities Increase Shoot Germination with Improved Leaf Biosynthesis in Ma Bamboo (<i>Dendrocalamus latiflorus</i> Munro) |
| title_full_unstemmed | Lower Light Intensities Increase Shoot Germination with Improved Leaf Biosynthesis in Ma Bamboo (<i>Dendrocalamus latiflorus</i> Munro) |
| title_short | Lower Light Intensities Increase Shoot Germination with Improved Leaf Biosynthesis in Ma Bamboo (<i>Dendrocalamus latiflorus</i> Munro) |
| title_sort | lower light intensities increase shoot germination with improved leaf biosynthesis in ma bamboo i dendrocalamus latiflorus i munro |
| topic | gradient light environment bamboo shoot germination photosynthetic characteristics photosynthetic products endogenous hormones |
| url | https://www.mdpi.com/1999-4907/13/10/1723 |
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