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Huang, Zhiqun; Haig, Terrence; Wu, Hanwen; An, Malaviya; Pratley, James

doi:10.1023/a:1026222414059

Cited by 59 publications

(19 citation statements)

References 15 publications

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“…Hook] in China (Huang et al. 2003). Understanding of allelopathy in the integrated community and ecosystem context requires to recognize the large number of different processes affected by the same chemical or its derivatives, and the potential for the direct allelochemical effects of plants on each other to be augmented, attenuated, modified, or offset by temperature change.…”

Section: Discussionmentioning

confidence: 99%

Effects of climate warming on plant autotoxicity in forest evolution: a case simulation analysis for Picea schrenkiana regeneration

Ruan

Cun-de

et al. 2016

Ecology and Evolution

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In order to explore how plant autotoxicity changes with climate warming, the autotoxicity of P. schrenkiana needles' water extract, organic extract fractions, and key allelochemical DHAP was systemically investigated at the temperature rising 2 and 4°C based on the data‐monitored soil temperature during the last decade in the stage of Schrenk spruce regeneration (seed germination and seedling growth). The results showed that the criterion day and night temperatures were 12°C and 4°C for seed germination, and 14°C and 6°C for seedling growth, respectively. In the presence of water extract, the temperature rise of 2°C significantly inhibited the germination vigor and rate of P. Schrenkiana seed, and a temperature rise of 4°C significantly increased the inhibition to the seedling growth (P < 0.05). Among the three organic fractions, the low‐polar fraction showed to be more phytotoxic than the other two fractions, causing significant inhibitory effects on the seed germination and growth even at low concentration of 0.1 mg/mL, and the inhibition effect was enhanced as temperature increased. The temperature rise significantly enhanced the promotion effect of DHAP, while the inhibition effect of temperature rise became less important with increasing concentration of DHAP. This investigation revealed that autotoxicity of P. schrenkiana was affected by the climate warming. As expected, it provided an insight into the mechanism and effectiveness of allelopathy in bridging the causal relationship between forest evolution and climate warming.

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Section: Discussionmentioning

confidence: 99%

Effects of climate warming on plant autotoxicity in forest evolution: a case simulation analysis for Picea schrenkiana regeneration

Ruan

Cun-de

et al. 2016

Ecology and Evolution

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“…Total phenolics (TP) and water soluble phenolic (WSP) content were measured in unburnt and burnt litter with three replicates, due to a causal relationship between phenolic content and phytotoxicity in plant (An et al 2001; Huang et al 2003). Approximately 100 mg portion of powder (burnt and unburnt litter) was weighed out and transferred to Eppendorf tube.…”

Section: Methodsmentioning

confidence: 99%

Allelopathy and resource competition: the effects of Phragmites australis invasion in plant communities

Uddin

Robinson

2017

Bot Stud

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Background Phragmites australis, a ubiquitous wetland plant, has been considered one of the most invasive species in the world. Allelopathy appears to be one of the invasion mechanisms, however, the effects could be masked by resource competition among target plants. The difficulty of distinguishing allelopathy from resource competition among plants has hindered investigations of the role of phytotoxic allelochemicals in plant communities. This has been addressed via experiments conducted in both the greenhouse and laboratory by growing associated plants, Melaleuca ericifolia, Rumex conglomeratus, and model plant, Lactuca sativa at varying densities with the allelopathic plant, P. australis, its litter and leachate of P. australis litter. This study investigated the potential interacting influences of allelopathy and resource competition on plant growth–density relationships.ResultsIn greenhouse, the root exudates mediated effects showed the strongest growth inhibition of M. ericifolia at high density whereas litter mediated results revealed increased growth at medium density treatments compared to low and high density. Again, laboratory experiments related to seed germination and seedling growth of L. sativa and R. conglomeratus exhibited phytotoxicity decreased showing positive growth as plant density increased and vice versa. Overall, the differential effects were observed among experiments but maximum individual plant biomass and some other positive effects on plant traits such as root and shoot length, chlorophyll content occurred at an intermediate density. This was attributed to the sharing of the available phytotoxin among plants at high densities which is compatible to density-dependent phytotoxicity model.ConclusionsThe results demonstrated that plant–plant interference is the combined effect of allelopathy and resource competition with many other factors but this experimental design, target-neighbor mixed-culture in combination of plant grown at varying densities with varying level of phytotoxins, mono-culture, can successfully separate allelopathic effects from competition.Electronic supplementary materialThe online version of this article (doi:10.1186/s40529-017-0183-9) contains supplementary material, which is available to authorized users.

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“…Ecológicamente, se han propuestos cuatro mecanismos para la excreción de los aleloquímicos al ambiente, donde cada uno de ellos han demostrado la eficacia de tal mecanismo, involucrando fenómenos de volatilización, [101][102][103][104][105][106][107] lixiviado, 108-113 descomposición de partes de la planta en el suelo [114][115][116][117][118] y exudados por raíz. [119][120][121][122][123][124][125][126][127] Estos mecanismos implican que los aleloquímicos pueden encontrase en cualquier parte de la planta, y que la dinámica de su actividad es una función del mecanismo en que este pueda ser liberado. Por ejemplo, la descomposición de residuos vegetal implica material senescente, que no implica una función activa de la planta, mientras que volatilización y exudados de raíz, son procesos extremadamente activos donde está involucrado el tejido vivo de la planta.…”

Section: 43unclassified

Exudados de la raiz y su relevancia actual en las interacciones alelopaticas

Oliveros‐Bastidas¹,

Macías²,

Carrera³

et al. 2009

Quím. Nova

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Recebido em 21/2/08; aceito em 7/7/08; publicado na web em 2/12/08 ROOT EXUDATES AND THEIR RELEVANCE TO THE ALLELOPATIC INTERACTIONS. Detrimental interactions among plants are expressed by competition for nutrients, chemical interferences and/or parasitism. Root exudates have an enormous potential at the modulation of these three mechanisms. These exudates play a key role as "phytoalexins release routes", being the allelochemicals, which regulate the chemical interactions, an example. This review presents the most recent findings on the currently used methodologies for the study of the exudation phenomenon. The methodologies for the sampling and analysis of such chemicals, as well as all other factors considered to increase the production of root exudates, are also examined.. Keywords: exudate; root; allelopathy. introducciÓn El estudio de los mecanismos mediante los cuales las plantas pueden interaccionar con su entorno es muy complejo, 1-3 debido principalmente a la gran diversidad de estrategias que estas utilizan para tal fin. 4 Las plantas en si aprovechan todos sus órganos constitutivos para activar estos mecanismo y transmitir información a su entorno, siendo éstos específicos para cada órgano, y estos a su ves, son los que definirán el tipo de información transmitida. Así, los mecanismos que pueden ser activados en los órganos reproductivos, como la emisión de compuestos volátiles, 5-8 pueden ser muy diferentes a aquellos activados o acumulados en la raíz, 9-11 órgano de la planta encargado de la absorción de los requerimientos nutricionales esenciales para el crecimiento, 12 y el que se encuentra en contactos directo con el suelo, soporte de la población biótica y algunos factores abióticos del ambiente donde la planta se desarrolla.Todos estos mecanismos han sido perfeccionados evolutivamente, 13-15 y como característica heredada de la planta, su desarrollo y manifestación no sigue un plan prediseñado, y por el contrario, el mismo se encuentra siempre sujeto a constantes modificaciones que se expresan en una plasticidad adaptativa como consecuencia de su interacción con su medio ambiente.16 Es esta propiedad la que le ha conferida a las plantas una alta capacidad de adaptarse y soportar las más diversas condiciones, no solo de tipo física, sino a las generadas por agentes bióticos. En términos generales, los mecanismos de interacción de las plantas con su entorno, aplicados para lograr su supervivencia como objetivo fundamental, pueden ser divididos en dos grandes grupos según su naturaleza. Un primer grupo está representado por aquellos mecanismos de tipo físico y de arquitectura de la planta, donde pueden incluirse características de velocidad de crecimiento, rasgos anatómicos de la hoja y el tallo, dormancia a largo tiempo y condiciones de sus cariópsides, mecanismo de reproducción, modos duales de reproducción, plasticidad ambiental, resistencia a condiciones adeversas, la germinación no requiere condiciones especiales, rápida reposición de organos perdidos, capacidad de desarrollar resistencia ...

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Untitled

Cited by 59 publications

References 15 publications

Effects of climate warming on plant autotoxicity in forest evolution: a case simulation analysis for Picea schrenkiana regeneration

Effects of climate warming on plant autotoxicity in forest evolution: a case simulation analysis for Picea schrenkiana regeneration

Allelopathy and resource competition: the effects of Phragmites australis invasion in plant communities

Exudados de la raiz y su relevancia actual en las interacciones alelopaticas

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