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dc.contributor.authorGeng, Yu-Peng
dc.contributor.authorPan, Xiao-Yun
dc.contributor.authorXu, Cheng-Yuan
dc.contributor.authorZhang, Wen-Ju
dc.contributor.authorLi, Bo
dc.contributor.authorChen, Jia-Kuan
dc.date.accessioned2017-05-03T14:56:58Z
dc.date.available2017-05-03T14:56:58Z
dc.date.issued2006
dc.date.modified2014-04-09T00:06:09Z
dc.identifier.issn1146-609X
dc.identifier.doi10.1016/j.actao.2006.07.002
dc.identifier.urihttp://hdl.handle.net/10072/57964
dc.description.abstractPhenotypic plasticity and genetic differentiation are two possible mechanisms that plants use to cope with varying environments. Although alligator weed (Alternanthera philoxeroides) possesses very low genetic diversity, this alien weed has successfully invaded diverse habitats with considerably varying water availability (from swamps to dry lands) in China. In contrast, its native congener (Alternanthera sessilis) has a much narrower ecological breadth, and is usually found in moist habitats. To understand the mechanisms underlying the contrasting pattern, we performed a greenhouse experiment to compare the reaction norms of alligator weed with those of its native congener, in which water availability was manipulated. Our results revealed that the two congeners had similar direction of phenotypic plasticity. However, A. philoxeroides showed greater plasticity in amount than did A. sessilis in many traits examined during the switch from wet to drought treatment. Nearly all of the phenotypic variance in A. philoxeroides could be ascribed to plasticity, while A. sessilis had a much higher fraction of phenotypic variance that could be explained by genotypic variation. These interspecific differences in plastic responses to variable water availability partially explained the difference in spatial distribution of the two congeners.
dc.description.peerreviewedYes
dc.description.publicationstatusYes
dc.languageEnglish
dc.language.isoeng
dc.publisherElsevier - Masson
dc.publisher.placeFrance
dc.relation.ispartofstudentpublicationN
dc.relation.ispartofpagefrom380
dc.relation.ispartofpageto385
dc.relation.ispartofissue3
dc.relation.ispartofjournalActa Oecologica
dc.relation.ispartofvolume30
dc.rights.retentionY
dc.subject.fieldofresearchEcology
dc.subject.fieldofresearchEcology not elsewhere classified
dc.subject.fieldofresearchcode3103
dc.subject.fieldofresearchcode310399
dc.titlePhenotypic plasticity of invasive Alternanthera philoxeroides in relation to different water availability, compared to its native congener
dc.typeJournal article
dc.type.descriptionC1 - Articles
dc.type.codeC - Journal Articles
gro.date.issued2006
gro.hasfulltextNo Full Text
gro.griffith.authorXu, Chengyuan


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