Molecular phenotypes associated with anomalous stamen development in Alternanthera philoxeroides

Zhu, Zhu; Zhou, Chengchuan; Yang, Ji

doi:10.3389/fpls.2015.00242

Cited by 13 publications

(7 citation statements)

References 63 publications

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“…To reduced potential phenotypic differences among the plants due to variation in parental environments, the plants had been propagated vegetatively for 4 years in a heated greenhouse at Forest Science Co., Ltd., of Beijing Forestry University. In China and Australia, A. philoxeroides does not produce viable seeds (Sainty et al, 1998; Zhu et al, 2015). Studies using molecular markers showed that populations sampled in South China derived from a single genotype (Xu et al, 2003; Wang et al, 2005; Li and Ye, 2006).…”

Section: Methodsmentioning

confidence: 99%

Context-Dependent Parental Effects on Clonal Offspring Performance

Dong

Kleunen

2018

Front. Plant Sci.

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Parental environments may potentially affect offspring fitness, and the expression of such parental effects may depend on offspring environments and on whether one considers an individual offspring or all offspring of a parent. Using a well-studied clonal herb, Alternanthera philoxeroides, we first grew parent plants in high and low soil-nutrient conditions and obtained 1st generation clonal offspring from these two environments. Then we grew offspring of these two types of 1st generation clonal offspring also in high and low nutrient conditions. We measured and analyzed mean performance and summed performance of the four types of 2nd generation clonal offspring. High nutrient availability of parental environments markedly increased both mean performance (i.e., the average fitness measure across all individual offspring produced by a parent) and summed performance (i.e., the sum of the fitness measure of all offspring produced by a parent) of the 2nd generation clonal offspring. The positive parental effects on summed performance of the 2nd generation clonal offspring were stronger when the 1st generation clonal offspring grew in the high instead of the low nutrient conditions, but the positive parental effects on their mean performance did not depend on the nutrient environments of the 1st generation clonal offspring. The results provide novel evidence that parental environmental effects persist across vegetative generations and strongly depend on offspring environments and levels of plants.

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Section: Methodsmentioning

confidence: 99%

Context-Dependent Parental Effects on Clonal Offspring Performance

Dong

Kleunen

2018

Front. Plant Sci.

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“…In most of the introduced regions, it reproduces asexually, primarily from stem nodes and shoot fragments ( Julien et al, 1995 ; Geng et al, 2007 ). Despite the extremely low genetic diversity of A. philoxeroides in China ( Xu et al, 2003 ; Wang et al, 2005 ), the species experienced massive vegetative propagation and rapid expansion in China ( Xu et al, 2003 ; Ye et al, 2003 ; Wang et al, 2005 ; Zhu et al, 2015 ).…”

Section: Methodsmentioning

confidence: 99%

Roles of Clonal Integration in both Heterogeneous and Homogeneous Habitats

et al. 2016

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Many studies have shown that clonal integration can promote the performance of clonal plants in heterogeneous habitats, but the roles of clonal integration in both heterogeneous and homogeneous habitats were rarely studied simultaneously. Ramet pairs of Alternanthera philoxeroides (Mart.) Griseb were placed in two habitats either heterogeneous or homogeneous in soil nutrient availability, with stolon connections left intact or severed. Total biomass, total length of stolons, and number of new ramets of distal (relatively young) ramets located in low-nutrient environments were significantly greater when the distal ramets were connected to than when they were disconnected from proximal (relatively old) ramets located in high-nutrient environments. Total length of stolons of proximal ramets growing in low-nutrient environments was significantly higher when the proximal ramets were connected to than when they were disconnected from the distal ramets growing in high-nutrient environments, but stolon connection did not affect total biomass or number of new ramets of the proximal ramets. Stolon severing also did not affect the growth of the whole ramet pairs in heterogeneous environments. In homogeneous high-nutrient environments stolon severing promoted the growth of the proximal ramets and the ramet pairs, but in homogeneous low-nutrient environments it did not affect the growth of the proximal or distal ramets. Hence, for A. philoxeroides, clonal fragmentation appears to be more advantageous than clonal integration in resource-rich homogeneous habitats, and clonal integration becomes beneficial in heterogeneous habitats. Our study contributes to revealing roles of clonal integration in both heterogeneous and homogeneous habitats and expansion patterns of invasive clonal plants such as A. philoxeroides in multifarious habitats.

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“…Griseb.] (Li et al 2015;Zhu et al 2015). However, a majority (88.7%) of the transcripts with no similarity to the nonredundant database still have similarity to one or more of the genome assemblies ( Supplementary File 2).…”

Section: Assessment Of the Rna-seq Assemblymentioning

confidence: 99%

Gene Space and Transcriptome Assemblies of Leafy Spurge (Euphorbia esula) Identify Promoter Sequences, Repetitive Elements, High-Quality Markers, and a Full-Length Chloroplast Genome

et al. 2018

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Leafy spurge (Euphorbia esulaL.) is an invasive perennial weed infesting range and recreational lands of North America. Previous research and omics projects withE. esulahave helped develop it as a model for studying many aspects of perennial plant development and response to abiotic stress. However, the lack of an assembled genome forE. esulahas limited the power of previous transcriptomics studies to identify functional promoter elements and transcription factor binding sites. An assembled genome forE. esulawould enhance our understanding of signaling processes controlling plant development and responses to environmental stress and provide a better understanding of genetic factors impacting weediness traits, evolution, and herbicide resistance. A comprehensive transcriptome database would also assist in analyzing future RNA-seq studies and is needed to annotate and assess genomic sequence assemblies. Here, we assembled and annotated 56,234 unigenes from an assembly of 589,235 RNA-seq-derived contigs and a previously published Sanger-sequenced expressed sequence tag collection. The resulting data indicate that we now have sequence for >90% of the expressedE. esulaprotein-coding genes. We also assembled the gene space ofE. esulaby using a limited coverage (18X) genomic sequence database. In this study, the programs Velvet and Trinity produced the best gene-space assemblies based on representation of expressed and conserved eukaryotic genes. The results indicate thatE. esulacontains as much as 23% repetitive sequences, of which 11% are unique. Our sequence data were also sufficient for assembling a full chloroplast and partial mitochondrial genome. Further, marker analysis identified more than 150,000 high-quality variants in ourE. esulaL-RNA–scaffolded, whole-genome, Trinity-assembled genome. Based on these results,E. esulaappears to have limited heterozygosity. This study provides a blueprint for low-cost genomic assemblies in weed species and new resources for identifying conserved and novel promoter regions among coordinately expressed genes ofE. esula.

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Molecular phenotypes associated with anomalous stamen development in Alternanthera philoxeroides

Cited by 13 publications

References 63 publications

Context-Dependent Parental Effects on Clonal Offspring Performance

Context-Dependent Parental Effects on Clonal Offspring Performance

Roles of Clonal Integration in both Heterogeneous and Homogeneous Habitats

Gene Space and Transcriptome Assemblies of Leafy Spurge (Euphorbia esula) Identify Promoter Sequences, Repetitive Elements, High-Quality Markers, and a Full-Length Chloroplast Genome

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