Allelopathic activity of different Byrsonima spp. leaf extracts on Lactuca sativa L. bioassay

Amâncio, Bárbara Christina Silva; Govêa, Kamilla Pacheco; Neto, Antônio Rodrigues Cunha; Trindade, Luciene de Oliveira Ribeiro; Souza, Thiago Corrêa de; Silva, Geraldo Alves da; Barbosa, Sandro

doi:10.1007/s11756-021-00872-0

Cited by 6 publications

(1 citation statement)

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“…The phytotoxicity of these five Asteraceae EIP is crucial to their invasion success (Khanh et al 2009;Lu et al 2020;Wei et al 2020a, b;Cheng et al 2021). As one of the most common horticultural Asteraceae species in the surrounding areas surrounding the emerging five Asteraceae EIP, L. sativa is a sensitive indicator for the study of the phytotoxicity research of EIP (Sousa et al 2019;Amancio et al 2021;Lee et al 2021;Simpson and Ku 2021). Lactuca sativa can co-exist with one or more of these five Asteraceae EIP in the same habitat, particularly in farmland and wasteland.…”

Section: Article Historymentioning

confidence: 99%

Drought stress intensifies the phytotoxicity of five Asteraceae exotic invasive plants

Zhong

et al. 2023

Israel J. Plant Sci.

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The phytotoxicity of exotic invasive plants (EIP) is vital for their successful invasion. At the family level, Asteraceae contains the largest number of EIP species in China. Drought stress may affect the phytotoxicity of EIP by altering the production and secretion of allelochemicals. Therefore, it is important to estimate the phytotoxicity of multiple EIP under drought stress. In this study, the phytotoxicity of five Asteraceae EIP, i.e., Solidago canadensis L., Aster subulatus Michx., Bidens pilosa L., Erigeron annuus (L.) Pers., and Conyza canadensis (L.) Cronq., were estimated using leaf extracts. Their effects on seed germination and seedling growth of the horticultural Asteraceae species Lactuca sativa L. under drought stress (simulated by polyethylene glycol-6000) were assessed. These five Asteraceae EIP, particularly S. canadensis, inhibited seed germination of L. sativa. Aster subulatus, B. pilosa, E. annuus, and C. canadensis increased seedling growth of L. sativa. The phytotoxicity of these five Asteraceae EIP decreased in the following order: S. canadensis > E. annuus > A. subulatus > B. pilosa ≈ C. canadensis. Drought stress intensified the phytotoxicity of all five Asteraceae EIP. The level of stress intensity mediated by these five Asteraceae EIP, particularly by S. canadensis, A. subulatus, and B. pilosa, increased with increasing degree of drought stress. Thus, an increasing growing degree of drought stress may accelerate the invasion process of these five Asteraceae EIP via the effects of intensified phytotoxicity on growth performance of adjacent species, particularly on seed germination and seedling growth.

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