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| 1 | Effects of physiological integration on defense strategies against herbivory by the clonal plant Alternanthera philoxeroides显示文摘Aims The plant-herbivore interaction is one of the most fundamental inter-actions in nature.Plants are sessile organisms,and consequently rely on particular strategies to avoid or reduce the negative impact of herbivory.Here,we aimed to determine the defense strategies against insect herbivores in the creeping invasive plant Alternanthera philoxeroides.Methods We tested the defense response of A.philoxeroides to herbivory by a leaf-feeding specialist insect Agasicles hygrophila and a pol-yphagous sap-feeding insect Planococcus minor.We also tested the mechanisms triggering defense responses of A.philoxeroides by including treatments of artificial leaf removal and jasmonic acid application.Furthermore,we examined the effect of physiological integration on these defense strategies.Important Findings The combination of artificial leaf removal and jasmonic acid appli-cation produced a similar effect to that of leaf-feeding by the real herbivore.Physiological integration influenced the defense strat-egies of A.philoxeroides against herbivores,and increased biomass allocation to aboveground parts in its apical ramets damaged by real herbivores.Our study highlights the importance of physio-logical integration and modular plasticity for understanding the consequences of herbivory in clonal plants. | Rubén Portela Bi-Cheng Dong Fei-Hai Yu Rodolfo Barreiro Sergio R.Roiloa | 2019 | Journal of Plant Ecology2019，12，4： | 5 |
| 2 | Trans-generational effects in the clonal invader Alternanthera philoxeroides显示文摘近年的研究已经揭示出表型可塑性可以通过营养世代遗传。从这个意义上讲,环境诱导的基因调控变化(例如DNA甲基化,即表观遗传变异)会导致可逆的塑性反应传递给后代。这种跨世代的可塑性在克隆植物中尤其重要,因为有性繁殖减少会降低通过遗传变异进行适应的可能性。许多最具侵略性的植物入侵者都具有克隆性,而且克隆性被认为是植物入侵性的关键。本研究中,我们的目标是确定在克隆入侵者喜旱莲子草(Alternanthera philoxeroides)中是否发生了跨代效应,以及这种效应在本地和非本地群落之间是否存在差异。在同质园实验中,我们将采自巴西(原产地)和伊比利亚半岛(非原产地)的喜旱莲子草种群分别种植在养分高和低的土壤中,后代植株被移植到高养分条件下作为对照。为了检验DNA甲基化对跨代可塑性的潜在作用,一半的母株用去甲基化剂5-氮杂胞苷处理。在来自原产地和非原产地的种群中均观察到了跨代效应。有趣的是,在原产地种群的生长变量(分株数、茎生物量、根生物量和总生物量)中发现了跨代效应,而在非原产地种群中发现了生物量分配具有跨代效应。在原产地种群中出现的跨代效应可以用“银勺”效应来解释,而非原产地种群的跨代效应可以归因于DNA甲基化引起的表观遗传传递。本研究强调了跨代效应对克隆植物生长的重要性,这有助于理解众多克隆植物能够成功繁殖扩张的机制。 | Rubén Portela Bi-Cheng Dong Fei-Hai Yu Rodolfo Barreiro Sergio R.Roiloa Dalva MSilva Matos | 2020 | Journal of Plant Ecology2020，13，1： | 2 |
| 3 | Differences in physiological integration between invasive and noninvasive introduced clonal species of Carpobrotus显示文摘Aims Clonal growth is associated with invasiveness in introduced plant species,but few studies have compared invasive and noninvasive introduced clonal species to investigate which clonal traits may underlie invasiveness.To test the hypothesis that greater capacity to increase clonal growth via physiological integration of connected ramets increases invasiveness in clonal plants,we compared the effects of severing connections on accumulation of mass in the two species of the creeping,succulent,perennial,herbaceous genus Carpobrotus that have been introduced on sand dunes along the Pacific Coast of northern California,the highly invasive species Carpobrotus edulis and the co-occurring,noninvasive species Carpobrotus chilensis.Methods Pairs of ramets from four mixed populations of the species from California were grown in a common garden for 3 months with and without severing the stem connecting the ramets.To simulate the effect of clones on soils in natural populations,the older ramet was grown in sand amended with potting compost and the younger in sand alone.Important Findings Severance decreased net growth in mass by~60%in C.edulis and~100%in C.chilensis,due mainly to the negative effect of severance on the shoot mass of the younger ramet within a pair.Contrary to the hypothesis,this suggests that physiological integration increases growth more in the less invasive species.However,severance also decreased allocation of mass to roots in the older ramet and increased it in the younger ramet in a pair,and the effect on the younger ramet was about twice as great in C.edulis as in C.chilensis.This indicates that the more invasive species shows greater phenotypic plasticity in response to physiological integration,in particular greater capacity for division of labor.This could contribute to greater long-term growth and suggests that the division of labor may be a trait that underlies the association between clonal growth and invasiveness in plants. | Sergio R.Roiloa Peter Alpert Rodolfo Barreiro | 2019 | Journal of Plant Ecology2019，12，6： | 2 |
| 4 | 四大洲食用昼花属的比较入侵生态学:对养分和竞争的响应显示文摘入侵生物学的两个关键假设是,某些特征是外来物种入侵的基础,且这些特征是在引入期间或之后选择的。我们通过关注两个可能赋予入侵性的特征来检验这些假设,即营养增加引起的较高生长加速和竞争引起的较低生长减速。我们对采自非洲、澳洲、欧洲和北美洲的4个食用昼花属(Carpobrotus)品种进行了比较。为了测试高入侵物种莫邪菊(Carpobrotus edulis)对这些特征的选择,我们将原产于南非的植株与入侵其他3个地区的植株进行了比较。在一个同质园中繁殖植株。然后,在添加或不添加养分的情况下单独培育子代,并在不添加养分的情况下将子代与另一个食用昼花属品种一起、或与欧洲的一种共生本土物种马兰草(Ammophila arenaria)一起培育。不同品种的食用昼花属对营养物质的反应并无差异,在入侵性更强的物种中,竞争反应的负面性也没有减弱。然而,与本土莫邪菊相比,添加营养物质引起外来莫邪菊更高的生长加速。此外,在处理开始时,两种入侵物种每分株的鲜质量高于两种非入侵物种。我们的研究结果表明,引种可以选择入侵物种对营养富集的反应进行选择,也证明了外来植物的体积和入侵性之间的关联。 | Rubén Portela Rodolfo Barreiro Peter Alpert Cheng-Yuan Xu Bruce L.Webber Sergio R.Roiloa | 2023 | Journal of Plant Ecology2023，16，1： | 0 |
| 5 | Is the ballan wrasse (Labrus bergylta) two species? Genetic analysis reveals within-species divergence associated with plain and spotted morphotype frequencies显示文摘The ballan wrasse(Labrus bergylta)is a marine fish belonging to the family Labridae characterized by 2 main morphotypes that occur in sympatry:spotty and plain.Previous studies have revealed differences in their life-history traits,such as growth and maturation;however,the genetic relationship between forms is presently unknown.Using 20 recently developed microsatellite markers,we conducted a genetic analysis of 41 and 48 spotty and plain ballan wrasse collected in Galicia(northwest Spain).The 2 morphotypes displayed highly significant genetic differences to each other(F_(ST)=0.018,P<0.0001).A similar degree of genetic differentiation(F_(ST)=0.025,P<0.0001)was shown using the STRUCTURE clustering approach with no priors at K=2.In this case,the frequency of spotty and plain morphotypes was significantly different(χ^(2)=9.46,P=0.002).It is concluded that there is significant genetic heterogeneity within this species,which appears to be highly associated with the spotty and plain forms,but not completely explained by them.Given the previously demonstrated biological differences between morphotypes,and the present genetic analyses,we speculate about the convenience of a taxonomic re-evaluation of this species. | María QUINTELA Elin Annie DANIELSEN Lua LOPEZ Rodolfo BARREIRO Terje SVÅSAND Halvor KNUTSEN Anne Berit SKIFTESVIK Kevin A.GLOVER | 2016 | Integrative Zoology2016，11，2： | 0 |
| 6 | Population structure and range expansion:the case of the invasive gastropod Cyclope neritea in northwest Iberian Peninsula显示文摘Biotic invasions have a reputation for unpredictable behavior.Here,we report how slight changes in human activity responsible for the introduction and range expansion of a non-native mollusk have led to detectable differences in the genetics of the invasion.Cyclope neritea is a non-predatory gastropod introduced to 2 areas of the European Atlantic:the northwest Iberian Peninsula(NWIP)and the French Atlantic coast(FAC).Shellfish seabed farming is intense in both areas but focuses on different commercial species.Using mitochondrial gene sequences,the lower genetic diversity recorded along the NWIP suggests a more homogeneous range of source populations than in the FAC.Unlike FAC,genetic diversity and haplotype composition in the NWIP correlate with the date of first occurrence of C.neritea at each site rather than with geographical location.Although this pattern evokes the genetic signature expected under a serial-founder colonization model from a single initial enclave,a comparison with samples from potential source populations suggests that the NWIP probably experienced several independent reintroductions.The jump dispersal pattern of C.neritea in the NWIP,together with the observation that populations established in the same year are genetically undifferentiated,point to human transport as the most plausible explanation for the current range expansion.Despite evidence for human-mediated dispersal,C.neritea managed to develop a seemingly non-random genetic pattern in the NWIP.It is suggested that caution must be exerted when interpreting genetic patterns in invaders. | Lucía COUCEIRO Lúa LÓPEZ JoséMiguel RUIZ Rodolfo BARREIRO | 2012 | Integrative Zoology2012，7，3： | 0 |
| 7 | Patterns of chloroplast DNA polymorphism in the endangered polyploid Centaurea borjae (Asteraceae): Implications for preserving genetic diversity显示文摘有放大碎片长度多型性(AFLP ) 的以前的学习采指纹的 A 没在危及的 Centaurea borjae 发现基因贫穷的证据并且建议四个管理单位(亩) 应该被指明。不过,这狭窄的地方性的植物的高 ploidy (6x ) 建议这些结论应该被从无核标记导出的独立证据验证。这里,质体染色体的可变 trnT-F 区域被定序获得这条新证据并且为当前的基因结构提供一个历史的背景。质体序列揭示了很少基因变化;把以前的结论称为进问题那 C。borjae 不经历基因贫穷。由对比,基因流动一定是低的结论被用质体序列(全球 FST=0.419 ) 在人口之中检测的强壮的基因区别增强。haplotypes 和差异的空间安排显示当前在种类范围的中心定位的人口是可能的地点长坚持而留下的地点可能源于后者殖民。从一个保存观点,四张人口最作出贡献到种类的质体染色体的突变而产生之遗传的丰富并且应该被给优先级。与以前的 AFLP 结果结合了,这些新数据推荐了那五而不是四,亩应该被建立。总的来说,我们的学习加亮把标记与继承的不同模式相结合设计精确保存指南并且在今日的基因结构后面在进化过程上获得线索的好处。 | Lua LOPEZ Rodolfo BARREIRO | 2013 | Journal of Systematics and Evolution2013，51，4： | 0 |
| 8 | 资源共享的方向性对入侵植物海榕菜生理整合的影响显示文摘与植物克隆生长相关的一个关键性状是生理整合能力,它允许在一个克隆内相连接的分株之间共享资源。资源传输遵循源-汇关系:从生长在资源丰富斑块上的分株到生长在贫瘠斑块上的分株。然而,一些实验结果表明,向顶运输(从后端到前端)通常超过基部运输(从前端到后端)。在本研究中,我们旨在确定入侵植物海榕菜(Carpobrotus edulis)生理整合模块的资源运输方向。我们开展了两个模拟实验,研究了在不同位置(后端、中部、前端)的不同营养水平对海榕菜连接和断开克隆系统的影响。比较了分株生物量分配模式和最终生物量,以阐明生理整合的作用是否受资源运输方向性的影响。研究结果表明,海榕菜资源的向顶运输是普遍存在的,其发育分工是后端分株专注于获取土壤资源,前端分株专注于地上生长。虽然在最严酷的生长条件下的前端分株所获得的效益最高,但这种生物量分配模式不受后端或前端分株生长的营养条件的影响。这种发育程序化的分工被认为可以促进海榕菜的横向生长,从而对这种入侵物种的扩展具有重要意义。 | Rubén Portela Rodolfo Barreiro Sergio R Roiloa | 2021 | Journal of Plant Ecology2021，14，5： | 0 |
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