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The Response of Regeneration Ability of Myriophyllum spicatum Apical Fragments to Decaying Cladophora oligoclona

1
School of Resource and Environmental Engineering, Wuhan University of Technology, Wuhan 430070, China
2
State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China
*
Author to whom correspondence should be addressed.
Water 2019, 11(5), 1014; https://doi.org/10.3390/w11051014
Received: 15 March 2019 / Revised: 25 April 2019 / Accepted: 10 May 2019 / Published: 15 May 2019
(This article belongs to the Section Water Quality and Ecosystems)
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PDF [2413 KB, uploaded 15 May 2019]
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Abstract

During the restoration of eutrophic shallow lakes, submerged macrophyte recovery is often accompanied by an excessive proliferation of filamentous green algae (FGA). This can lead to the recession or even disappearance of the submerged macrophytes in these lakes. However, the use of plant fragments in reproduction and dispersion is an important life history strategy for submerged macrophytes. In this work, it studied apical fragment propagation in Myriophyllum spicatum and its physiological and biochemical responses to the decomposing liquid of Cladophora oligoclona. Myriophyllum spicatum apical fragments showed no new roots or buds when treated with 0.4 times the original decomposing liquid, and their PSII functional parameters were lower than those of the control. In contrast, the relevant sugar content accumulated to 115.26%, and the activities of an energy enzyme (Ca2+/Mg2+-ATPase) and a secondary metabolic-related enzyme (PAL) increased by 490.63% and 28.13%, showing an elevated defense response. These results indicated that the early regeneration of M. spicatum could be hindered by environmental stress, and that this may further affect the reproduction and colonization of these submerged macrophytes. View Full-Text
Keywords: apical fragment; Cladophora oligoclona; decomposing liquid; Myriophyllum spicatum; regeneration apical fragment; Cladophora oligoclona; decomposing liquid; Myriophyllum spicatum; regeneration
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
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Zhang, L.; Huang, S.; Peng, X.; Liu, B.; Zhang, Y.; Zhou, Q.; Wu, Z. The Response of Regeneration Ability of Myriophyllum spicatum Apical Fragments to Decaying Cladophora oligoclona. Water 2019, 11, 1014.

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