Kato-Noguchi Hisashi, Kurniadie Denny
Department of Applied Biological Science, Faculty of Agriculture, Kagawa University, Miki 761-0795, Japan.
Department of Agronomy, Faculty of Agriculture, Universitas Padjadjaran, Jl. Raya, Bandung Sumedang Km 21, Jatinangor, Sumedang 45363, Indonesia.
Plants (Basel). 2022 Jun 24;11(13):1672. doi: 10.3390/plants11131672.
(Lam.) de Wit is native to southern Mexico and Central America and is now naturalized in more than 130 countries. The spread of is probably due to its multipurpose use such as fodder, timber, paper pulp, shade trees, and soil amendment. However, the species is listed in the world's 100 worst invasive alien species, and an aggressive colonizer. It forms dense monospecific stands and threatens native plant communities, especially in oceanic islands. Phytotoxic chemical interactions such as allelopathy have been reported to play an important role in the invasion of several invasive plant species. Possible evidence for allelopathy of has also been accumulated in the literature over 30 years. The extracts, leachates, root exudates, litter, decomposing residues, and rhizosphere soil of increased the mortality and suppressed the germination and growth of several plant species, including weeds and woody plants. Those observations suggest that is allelopathic and contains certain allelochemicals. Those allelochemicals may release into the rhizosphere soil during decomposition process of the plant residues and root exudation. Several putative allelochemicals such as phenolic acids, flavonoids, and mimosine were identified in The species produces a large amount of mimosine and accumulates it in almost all parts of the plants, including leaves, stems, seeds, flowers, roots, and root nodules. The concentrations of mimosine in these parts were 0.11 to 6.4% of their dry weight. Mimosine showed growth inhibitory activity against several plant species, including some woody plants and invasive plants. Mimosine blocked cell division of protoplasts from hort. ex E. Vilm. between G and S phases, and disturbed the enzyme activity such as peroxidase, catalase, and IAA oxidase. Some of those identified compounds in may be involved in its allelopathy. Therefore, the allelopathic property of may support its invasive potential and formation of dense monospecific stands. However, the concentrations of mimosine, phenolic acids, and flavonoids in the vicinity of , including its rhizosphere soil, have not yet been reported.
（拉马克）德威特原产于墨西哥南部和中美洲，现已在130多个国家归化。其传播可能归因于它的多种用途，如饲料、木材、纸浆、遮荫树和土壤改良。然而，该物种被列入世界100种最严重的外来入侵物种，是一种侵略性的殖民者。它形成密集的单一种植群落，威胁本地植物群落，尤其是在海洋岛屿。据报道，植物毒性化学相互作用如化感作用在几种入侵植物物种的入侵中起重要作用。关于该物种化感作用的可能证据在过去30年的文献中也已积累。该物种的提取物、浸出液、根系分泌物、凋落物、分解残留物和根际土壤增加了几种植物物种的死亡率，并抑制了包括杂草和木本植物在内的多种植物的萌发和生长。这些观察结果表明该物种具有化感作用并含有某些化感物质。这些化感物质可能在植物残体分解过程和根系分泌过程中释放到根际土壤中。在该物种中鉴定出了几种推定的化感物质，如酚酸、黄酮类化合物和含羞草碱。该物种产生大量含羞草碱并将其积累在植物的几乎所有部位，包括叶子、茎、种子、花、根和根瘤。这些部位中含羞草碱的浓度为其干重的0.11%至6.4%。含羞草碱对几种植物物种表现出生长抑制活性，包括一些木本植物和入侵植物。含羞草碱阻止了来自hort. ex E. Vilm.的原生质体在G期和S期之间的细胞分裂，并干扰了过氧化物酶、过氧化氢酶和吲哚乙酸氧化酶等酶的活性。该物种中鉴定出的一些化合物可能与其化感作用有关。因此，该物种的化感特性可能支持其入侵潜力和密集单一种植群落的形成。然而，该物种附近包括其根际土壤中含羞草碱、酚酸和黄酮类化合物的浓度尚未见报道。
