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<p>Compared with other trait-based approaches, stoichiometric homeostasis (<i>H</i>) has enhanced capabilities for explaining the mechanism of plant invasive success, mainly due to its performance in quantifying plant competitive ability and quantitative characteristics. In view of that, we determined the leaf nitrogen homeostasis (<i>H</i><sub>N</sub>), phosphorus homeostasis (<i>H</i><sub>P</sub>) and potassium homeostasis (<i>H</i><sub>K</sub>) of invasive alligator weed (<i>Alternanthera philoxeroides</i>&#xa0;(Mart.) Griseb) along its latitudinal and longitudinal invaded ranges in China. The results highlighted that the leaf <i>H</i><sub>N</sub>, <i>H</i><sub>P</sub> and <i>H</i><sub>K</sub> of the plant were higher than those shown in previous research and were not dependent on its dominance throughout its invaded stages. Leaf <i>H</i><sub>K</sub> increased with latitude but not with longitude, although both <i>H</i><sub>N</sub> and <i>H</i><sub>P</sub> showed no significant differences along its latitudinal and longitudinal invaded ranges. These results suggested that the high and stable values of leaf <i>H</i><sub>N</sub>, <i>H</i><sub>P</sub> and <i>H</i><sub>K</sub> of the plant made it super competitive for N, P and K nutrients throughout its invaded ranges. Moreover, the <i>H</i><sub>K</sub> value of alligator weed increased with latitude rise but decreased with its invasion stages, which indicated that alligator weed could greatly resist biotic and environmental stressors, especially at the front edges of its invaded communities. As overall result, the high and stable leaf <i>H</i><sub>N</sub>, <i>H</i><sub>P</sub> and <i>H</i><sub>K</sub> scores may promote the rapid expansion of the invasive plant in the investigated area of China. Accordingly, the here used <i>H</i> index could be a good potential tool for future studies dealing with “invasion ecology” due to the good performance in the current research.</p>

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High and stable nutrient homeostasis correlates with the invasion of Alternanthera philoxeroides

  • 期刊论文

  • 发表日期：

    2026年1月20日

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  • Anguo Gao,
  • Hongyu Xiao,
  • Falin Chen,
  • Manyun Zhang,
  • Jian Yang,
  • Jie Zhang,
  • Yong Zhang,
  • Mohamed Abdelaziz Balah,
  • Avelino Núñez Delgado,
  • Aiping Wu

摘要

Compared with other trait-based approaches, stoichiometric homeostasis (H) has enhanced capabilities for explaining the mechanism of plant invasive success, mainly due to its performance in quantifying plant competitive ability and quantitative characteristics. In view of that, we determined the leaf nitrogen homeostasis (HN), phosphorus homeostasis (HP) and potassium homeostasis (HK) of invasive alligator weed (Alternanthera philoxeroides (Mart.) Griseb) along its latitudinal and longitudinal invaded ranges in China. The results highlighted that the leaf HN, HP and HK of the plant were higher than those shown in previous research and were not dependent on its dominance throughout its invaded stages. Leaf HK increased with latitude but not with longitude, although both HN and HP showed no significant differences along its latitudinal and longitudinal invaded ranges. These results suggested that the high and stable values of leaf HN, HP and HK of the plant made it super competitive for N, P and K nutrients throughout its invaded ranges. Moreover, the HK value of alligator weed increased with latitude rise but decreased with its invasion stages, which indicated that alligator weed could greatly resist biotic and environmental stressors, especially at the front edges of its invaded communities. As overall result, the high and stable leaf HN, HP and HK scores may promote the rapid expansion of the invasive plant in the investigated area of China. Accordingly, the here used H index could be a good potential tool for future studies dealing with “invasion ecology” due to the good performance in the current research.