Sexual and asexual reproductive strategies of submerged plant, <i>Potamogeton crispus</i> L., under simulated warming

Wang Tong; Huang Xiao-Yu; Sun Zhen; Fan Zheng-Hao; Ze Zi-Han; Zhang Meng-Ya; Liu Chun-Hua

doi:10.11913/PSJ.2095-0837.22186

Plant Science Journal > 2023 > 41(3): 380-387. > DOI: 10.11913/PSJ.2095-0837.22186 CSTR: 32231.14.PSJ.2095-0837.22186

Wang T，Huang XY，Sun Z，Fan ZH，Ze ZH，Zhang MY，Liu CH. Sexual and asexual reproductive strategies of submerged plant, Potamogeton crispus L., under simulated warming[J]. Plant Science Journal，2023，41（3）：380−387. DOI: 10.11913/PSJ.2095-0837.22186

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Sexual and asexual reproductive strategies of submerged plant, Potamogeton crispus L., under simulated warming

1.
College of Landscape Architecture and Forestry, Qingdao Agricultural University, Qingdao, Shandong 266109, China
2.
College of Life Sciences, Wuhan University, Wuhan 430072, China

Funds: This work was supported by grants from the National Natural Science Foundation of China (31800299), General Financial Grant from the China Postdoctoral Science Foundation (2017M622184), Qingdao Agricultural University Doctoral Start-Up Fund (663/1121009), and National Undergraduate Training Program for Innovation and Entrepreneurship of Qingdao Agricultural University (844, 849).

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Received Date: October 14, 2022
Revised Date: November 12, 2022
Available Online: July 02, 2023

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Abstract

Abstract

The cosmopolitan submerged plant, Potamogeton crispus L., was used as a model species to study the effects of climate warming on reproduction. Turions from four different geographic temperate regions in China were used for the mesocosm experiment. A glasshouse experiment was used to mimic climate warming of 2.0 ℃–5.8 ℃. Number and biomass of turions and fruits were selected as proxies for asexual and sexual reproduction, respectively. Based on the potential correlation between scale leaf number of the turions and fitness of asexual propagules, the turions were classified into two categories: oligophyllous (scale leaf number ≤ 4) and pleiophyllous turions (scale leaf number > 4). Geographic sources and warming conditions significantly affected asexual and sexual reproduction in P. crispus. Although simulated warming had different effects on turion number in different clonal populations, total turion biomass did not decrease. Simulated warming led to a decrease in the percentage of oligophyllous turions and an increase in the percentage of pleiophyllous turions. Moreover, simulated warming led to total loss of sexual reproduction in three clonal populations. As P. crispus is mainly hydrophilous, we speculate that warming destroyed pollen viability, resulting in the total loss of sexual reproduction. The scale leaves were capable of nutrient storage and photosynthesis. Additionally, a positive correlation was found between scale leaf number and axillary bud number. We speculate that P. crispus maintains fitness via the production of larger-size asexual propagules under warming conditions as a reproductive life-history strategy to cope with climate warming.
- Reproduction,
- Fitness,
- Climate warming,
- Submerged plant,
- Potamogeton crispus

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References (37)

References

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Sexual and asexual reproductive strategies of submerged plant, Potamogeton crispus L., under simulated warming