Allelopathic effects of Cinnamomum septentrionale leaf litter on Eucalyptus grandis saplings
Allelopathy plays an important role in plant-plant interactions, particularly through compounds released from litter exudates and decomposition. We conducted a greenhouse experiment to examine how additions of Cinnamomum septentrionale Hand. Mazz leaf litter (A) versus leaf litter aqueous extracts (...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2020-03-01
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| Series: | Global Ecology and Conservation |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2351989419307322 |
| _version_ | 1811269070665809920 |
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| author | Weiwei Huang Gadi V.P. Reddy Peijian Shi Jianbei Huang Hongling Hu Tingxing Hu |
| author_facet | Weiwei Huang Gadi V.P. Reddy Peijian Shi Jianbei Huang Hongling Hu Tingxing Hu |
| author_sort | Weiwei Huang |
| collection | DOAJ |
| description | Allelopathy plays an important role in plant-plant interactions, particularly through compounds released from litter exudates and decomposition. We conducted a greenhouse experiment to examine how additions of Cinnamomum septentrionale Hand. Mazz leaf litter (A) versus leaf litter aqueous extracts (B) can impact Eucalyptus grandis Hill ex Maid saplings, focusing on growth, physiology and photosynthesis. We show that both A and B significantly inhibited the growth and photosynthesis of E. grandis saplings, and this inhibition strengthened with increasing soil A content (range from 0 to 120 g pot−1) and concentrations of B (range from 0 to 80 g L−1). Additions of leaf litter or its aqueous extracts decreased chlorophyll content and intercellular CO2 concentration (Ci) while stomatal conductance (Gs) increased, reflecting that non-stomatal limitation might be the reason for the reduction of the photosynthetic rate. After treatment with A, the peroxidase (POD) and superoxide dismutase (SOD) activity were reduced, while there was a reduction in POD and non-changed SOD activity after treatment with B. Furthermore, sugar and proline levels declined under both A and B treatments. This study demonstrates that both A and B of C. septentrionale influenced the growth, chlorophyll synthesis and photosynthesis of E. grandis saplings, and caused oxidative damage in E. grandis. The Synthesis Effect (SE) indicates that B has stronger allelopathic effect than A under the same treatment. This stronger allelopathic effect of C. septentrionale leaf litter aqueous extracts than its decomposing leaf litter can be reflected by greater damage to membrane systems, and greater reductions of both chlorophyll content and photosynthesis on treated plants. Keywords: Cinnamomum septentrionale, Eucalyptus grandis, Photosynthesis, Growth, Non-enzymatic antioxidants, Enzymatic antioxidants |
| first_indexed | 2024-04-12T21:34:21Z |
| format | Article |
| id | doaj.art-4e501cbb2c2c4b8da496f667bbca0ea9 |
| institution | Directory Open Access Journal |
| issn | 2351-9894 |
| language | English |
| last_indexed | 2024-04-12T21:34:21Z |
| publishDate | 2020-03-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Global Ecology and Conservation |
| spelling | doaj.art-4e501cbb2c2c4b8da496f667bbca0ea92022-12-22T03:15:56ZengElsevierGlobal Ecology and Conservation2351-98942020-03-0121Allelopathic effects of Cinnamomum septentrionale leaf litter on Eucalyptus grandis saplingsWeiwei Huang0Gadi V.P. Reddy1Peijian Shi2Jianbei Huang3Hongling Hu4Tingxing Hu5Co-Innovation Center for Sustainable Forestry in Southern China, Bamboo Research Institute, Nanjing Forestry University, Nanjing, 210037, China; Department of Geosciences and Natural Resource Management, The University of Copenhagen, Rolighedsvej 23, DK-1958, Frederiksberg C, DenmarkUSDA-ARS-Southern Insect Management Research Unit, 141 Experiment Station Rd., P.O. Box 346, Stoneville, MS, 38776, USACo-Innovation Center for Sustainable Forestry in Southern China, Bamboo Research Institute, Nanjing Forestry University, Nanjing, 210037, China; Tropical Silviculture and Forest Ecology, University of Goettingen, Göttingen, 37077, GermanyMax Planck Institute for Biogeochemistry, Jena, 07745, GermanyKey Laboratory of Forestry Ecological Engineering of Sichuan Province, College of Forestry, Sichuan Agricultural University, Wenjiang, 611130, Chengdu, Sichuan, PR China; Corresponding authors.Key Laboratory of Forestry Ecological Engineering of Sichuan Province, College of Forestry, Sichuan Agricultural University, Wenjiang, 611130, Chengdu, Sichuan, PR China; Corresponding authors.Allelopathy plays an important role in plant-plant interactions, particularly through compounds released from litter exudates and decomposition. We conducted a greenhouse experiment to examine how additions of Cinnamomum septentrionale Hand. Mazz leaf litter (A) versus leaf litter aqueous extracts (B) can impact Eucalyptus grandis Hill ex Maid saplings, focusing on growth, physiology and photosynthesis. We show that both A and B significantly inhibited the growth and photosynthesis of E. grandis saplings, and this inhibition strengthened with increasing soil A content (range from 0 to 120 g pot−1) and concentrations of B (range from 0 to 80 g L−1). Additions of leaf litter or its aqueous extracts decreased chlorophyll content and intercellular CO2 concentration (Ci) while stomatal conductance (Gs) increased, reflecting that non-stomatal limitation might be the reason for the reduction of the photosynthetic rate. After treatment with A, the peroxidase (POD) and superoxide dismutase (SOD) activity were reduced, while there was a reduction in POD and non-changed SOD activity after treatment with B. Furthermore, sugar and proline levels declined under both A and B treatments. This study demonstrates that both A and B of C. septentrionale influenced the growth, chlorophyll synthesis and photosynthesis of E. grandis saplings, and caused oxidative damage in E. grandis. The Synthesis Effect (SE) indicates that B has stronger allelopathic effect than A under the same treatment. This stronger allelopathic effect of C. septentrionale leaf litter aqueous extracts than its decomposing leaf litter can be reflected by greater damage to membrane systems, and greater reductions of both chlorophyll content and photosynthesis on treated plants. Keywords: Cinnamomum septentrionale, Eucalyptus grandis, Photosynthesis, Growth, Non-enzymatic antioxidants, Enzymatic antioxidantshttp://www.sciencedirect.com/science/article/pii/S2351989419307322 |
| spellingShingle | Weiwei Huang Gadi V.P. Reddy Peijian Shi Jianbei Huang Hongling Hu Tingxing Hu Allelopathic effects of Cinnamomum septentrionale leaf litter on Eucalyptus grandis saplings Global Ecology and Conservation |
| title | Allelopathic effects of Cinnamomum septentrionale leaf litter on Eucalyptus grandis saplings |
| title_full | Allelopathic effects of Cinnamomum septentrionale leaf litter on Eucalyptus grandis saplings |
| title_fullStr | Allelopathic effects of Cinnamomum septentrionale leaf litter on Eucalyptus grandis saplings |
| title_full_unstemmed | Allelopathic effects of Cinnamomum septentrionale leaf litter on Eucalyptus grandis saplings |
| title_short | Allelopathic effects of Cinnamomum septentrionale leaf litter on Eucalyptus grandis saplings |
| title_sort | allelopathic effects of cinnamomum septentrionale leaf litter on eucalyptus grandis saplings |
| url | http://www.sciencedirect.com/science/article/pii/S2351989419307322 |
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