Are the invasive grasses Cynodon dactylon and Eragrostis plana more phytotoxic than a co-occurring native? [¿Las gramíneas invasoras Cynodon dactylon y Eragrostis plana son más fitotóxicas que una nativa coexistente?].
ABSTRACT. Allelopathy, the release of phytotoxins by plants, may be a key mechanism by which an invasive species displaces residents. However, methodological procedures are still questioned in the literature. We evaluated the phytotoxic effects of Cynodon dactylon and Eragrostis plana, the most inva...
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| Language: | English |
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2020
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| Online Access: | https://ainfo.inia.uy/consulta/busca?b=pc&id=61234&biblioteca=vazio&busca=61234&qFacets=61234 |
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| _version_ | 1868890231147593728 |
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| author | GUIDO, A. |
| author2 | QUIÑONES, A. PEREIRA, A.L. SILVA, E.R. DA |
| author2_role | author author author |
| author_browse | GUIDO, A. PEREIRA, A.L. QUIÑONES, A. SILVA, E.R. DA |
| author_facet | GUIDO, A. QUIÑONES, A. PEREIRA, A.L. SILVA, E.R. DA |
| author_role | author |
| collection | AINFO |
| dc.creator.none.fl_str_mv | GUIDO, A. QUIÑONES, A. PEREIRA, A.L. SILVA, E.R. DA |
| dc.date.none.fl_str_mv | 2020 2022-10-21T01:39:49Z 2022-10-21T01:39:49Z 2022-10-21T01:39:49Z |
| dc.identifier.none.fl_str_mv | https://ainfo.inia.uy/consulta/busca?b=pc&id=61234&biblioteca=vazio&busca=61234&qFacets=61234 |
| dc.language.none.fl_str_mv | en eng |
| dc.rights.none.fl_str_mv | info:eu-repo/semantics/openAccess Acceso abierto |
| dc.source.none.fl_str_mv | reponame:AINFO instname:Instituto Nacional de Investigación Agropecuaria instacron:Instituto Nacional de Investigación Agropecuaria |
| dc.subject.none.fl_str_mv | BERMUDAGRASS CAPIM ANNONI INVASION LOVEGRASS PHYTOTOXINS RIO DE LA PLATA GRASSLANDS PASTIZALES DEL RIO DE LA PLATA GRAMILLA FITOTOXINAS |
| dc.title.none.fl_str_mv | Are the invasive grasses Cynodon dactylon and Eragrostis plana more phytotoxic than a co-occurring native? [¿Las gramíneas invasoras Cynodon dactylon y Eragrostis plana son más fitotóxicas que una nativa coexistente?]. |
| dc.type.none.fl_str_mv | Article PublishedVersion info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion |
| description | ABSTRACT. Allelopathy, the release of phytotoxins by plants, may be a key mechanism by which an invasive species displaces residents. However, methodological procedures are still questioned in the literature. We evaluated the phytotoxic effects of Cynodon dactylon and Eragrostis plana, the most invasive grasses of the Río de la Plata grasslands. Although allelopathy has been claimed as one of the possible mechanisms involved in the establishment and impact of these species, no empirical evidence has convincingly supported it. We performed a germination experiment to assess the effect of both invasive species on Eragrostis bahiensis, a native grass from the region. We used aqueous extracts from fresh and dry leaves of three donor species: two invasive (C. dactylon and E. plana) and one co-occurring native from the introduced range (Coelorachis selloana). This approach allows to relativize the invasive species effect from resident species, according to the novel weapon hypothesis. As a result, only aqueous extracts from dried leaves inhibited the germination and early growth of E. bahiensis. The magnitude of these effects varied between donor species, but there was no consensus to conclude both invasive species had greater effects. Cynodon dactylon caused the strongest inhibitory effect on E. bahiensis. However, the native C. selloana also presented a potent inhibitory effect, stronger than the well-known invasive E. plana. Thus, the role of allelopathy on E. plana invasion in the Río de la Plata grasslands should be questioned. Finally, we addressed some suggestions for improving experimental design for testing the novelty of phytotoxic effects in the introduced range. |
| eu_rights_str_mv | openAccess |
| format | article |
| id | anni_f1f3c5dcd6d20a64b504c8b2e803cf74 |
| instacron_str | Instituto Nacional de Investigación Agropecuaria |
| institution | Instituto Nacional de Investigación Agropecuaria |
| instname_str | Instituto Nacional de Investigación Agropecuaria |
| language | eng |
| language_invalid_str_mv | en |
| network_acronym_str | anni |
| network_name_str | oai-lr-anni |
| oai_identifier_str | oai:redi.anii.org.uy:20.500.12381/1453 |
| publishDate | 2020 |
| publishDateSort | 2020 |
| reponame_str | AINFO |
| repository.mail.fl_str_mv | |
| repository.name.fl_str_mv | |
| repository_id_str | |
| rights_invalid_str_mv | Acceso abierto |
| spelling | Are the invasive grasses Cynodon dactylon and Eragrostis plana more phytotoxic than a co-occurring native? [¿Las gramíneas invasoras Cynodon dactylon y Eragrostis plana son más fitotóxicas que una nativa coexistente?].GUIDO, A.QUIÑONES, A.PEREIRA, A.L.SILVA, E.R. DABERMUDAGRASSCAPIM ANNONIINVASIONLOVEGRASSPHYTOTOXINSRIO DE LA PLATA GRASSLANDSPASTIZALES DEL RIO DE LA PLATAGRAMILLAFITOTOXINASABSTRACT. Allelopathy, the release of phytotoxins by plants, may be a key mechanism by which an invasive species displaces residents. However, methodological procedures are still questioned in the literature. We evaluated the phytotoxic effects of Cynodon dactylon and Eragrostis plana, the most invasive grasses of the Río de la Plata grasslands. Although allelopathy has been claimed as one of the possible mechanisms involved in the establishment and impact of these species, no empirical evidence has convincingly supported it. We performed a germination experiment to assess the effect of both invasive species on Eragrostis bahiensis, a native grass from the region. We used aqueous extracts from fresh and dry leaves of three donor species: two invasive (C. dactylon and E. plana) and one co-occurring native from the introduced range (Coelorachis selloana). This approach allows to relativize the invasive species effect from resident species, according to the novel weapon hypothesis. As a result, only aqueous extracts from dried leaves inhibited the germination and early growth of E. bahiensis. The magnitude of these effects varied between donor species, but there was no consensus to conclude both invasive species had greater effects. Cynodon dactylon caused the strongest inhibitory effect on E. bahiensis. However, the native C. selloana also presented a potent inhibitory effect, stronger than the well-known invasive E. plana. Thus, the role of allelopathy on E. plana invasion in the Río de la Plata grasslands should be questioned. Finally, we addressed some suggestions for improving experimental design for testing the novelty of phytotoxic effects in the introduced range.2022-10-21T01:39:49Z2022-10-21T01:39:49Z20202022-10-21T01:39:49ZArticlePublishedVersioninfo:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttps://ainfo.inia.uy/consulta/busca?b=pc&id=61234&biblioteca=vazio&busca=61234&qFacets=61234reponame:AINFOinstname:Instituto Nacional de Investigación Agropecuariainstacron:Instituto Nacional de Investigación Agropecuariaenenginfo:eu-repo/semantics/openAccessAcceso abiertooai:redi.anii.org.uy:20.500.12381/14532026-02-10T17:35:48Z |
| spellingShingle | Are the invasive grasses Cynodon dactylon and Eragrostis plana more phytotoxic than a co-occurring native? [¿Las gramíneas invasoras Cynodon dactylon y Eragrostis plana son más fitotóxicas que una nativa coexistente?]. GUIDO, A. BERMUDAGRASS CAPIM ANNONI INVASION LOVEGRASS PHYTOTOXINS RIO DE LA PLATA GRASSLANDS PASTIZALES DEL RIO DE LA PLATA GRAMILLA FITOTOXINAS |
| status_str | publishedVersion |
| title | Are the invasive grasses Cynodon dactylon and Eragrostis plana more phytotoxic than a co-occurring native? [¿Las gramíneas invasoras Cynodon dactylon y Eragrostis plana son más fitotóxicas que una nativa coexistente?]. |
| title_full | Are the invasive grasses Cynodon dactylon and Eragrostis plana more phytotoxic than a co-occurring native? [¿Las gramíneas invasoras Cynodon dactylon y Eragrostis plana son más fitotóxicas que una nativa coexistente?]. |
| title_fullStr | Are the invasive grasses Cynodon dactylon and Eragrostis plana more phytotoxic than a co-occurring native? [¿Las gramíneas invasoras Cynodon dactylon y Eragrostis plana son más fitotóxicas que una nativa coexistente?]. |
| title_full_unstemmed | Are the invasive grasses Cynodon dactylon and Eragrostis plana more phytotoxic than a co-occurring native? [¿Las gramíneas invasoras Cynodon dactylon y Eragrostis plana son más fitotóxicas que una nativa coexistente?]. |
| title_short | Are the invasive grasses Cynodon dactylon and Eragrostis plana more phytotoxic than a co-occurring native? [¿Las gramíneas invasoras Cynodon dactylon y Eragrostis plana son más fitotóxicas que una nativa coexistente?]. |
| title_sort | Are the invasive grasses Cynodon dactylon and Eragrostis plana more phytotoxic than a co-occurring native? [¿Las gramíneas invasoras Cynodon dactylon y Eragrostis plana son más fitotóxicas que una nativa coexistente?]. |
| topic | BERMUDAGRASS CAPIM ANNONI INVASION LOVEGRASS PHYTOTOXINS RIO DE LA PLATA GRASSLANDS PASTIZALES DEL RIO DE LA PLATA GRAMILLA FITOTOXINAS |
| url | https://ainfo.inia.uy/consulta/busca?b=pc&id=61234&biblioteca=vazio&busca=61234&qFacets=61234 |