16 Works

Conflicting signal in transcriptomic markers leads to a poorly resolved backbone phylogeny of Chalcidoid wasps

Junxia Zhang, Amelia R.I. Lindsey, Ralph S. Peters, John M. Heraty, Keith R. Hopper, John H. Werren, Ellen O. Martinson, James B. Woolley, Matt J. Yoder & Lars Krogmann
Chalcidoidea (Hymenoptera) are a megadiverse superfamily of wasps with astounding variation in both morphology and biology. Most species are parasitoids and important natural enemies of insects in terrestrial ecosystems. In this study, we explored a transcriptome-based phylogeny of Chalcidoidea and found that poorly resolved relationships could only be marginally improved by adding more genes (a total of 5,591) and taxa (a total of 65), proof-checking for errors of homology and contamination, and decreasing missing data....

Anchored phylogenomics and a revised classification of the Planidial Larva Clade of Jewel Wasps (Hymenoptera: Chalcidoidea)

JUNXIA ZHANG, John Heraty, Christopher Darling, Robert Kresslein, Austin Baker, Javier Torréns, Jean-Yves Rasplus, Alan Lemmon & Emily Lemmon
Planidia are free-living, mobile first-instar larvae that are notable in their ability to transition on a single host between different larval stadia, and for completing their development on the host prepupa as ectoparasitoids, effectively acting as larval-pupal external koinobionts. Within Chalcidoidea, a mega-diverse superfamily of parasitoid wasps, taxa with a planidium form a monophyletic group, the Planidial-Larva-Clade (PLC), which has been comprised of three recognized groups: Eutrichosomatinae (Pteromalidae), Perilampidae (Chrysolampinae, Perilampinae, Philomidinae and the unplaced...

Species co-occurrence shapes spatial variability in plant diversity–biomass relationships in natural rangelands under different grazing intensities

Anvar Sanaei, Emma J. Sayer, Hugo Saiz, Zuoqiang Yuan & Arshad Ali
Grazing can alter plant species interactions in natural rangelands, which in turn might influence the productivity of the ecosystem but we do not fully understand how spatial variability in plant diversity-biomass relationships are modulated by grazing intensity. Here, we hypothesized that plant species co-occurrence in rangelands is mainly driven by niche segregation due to grazing and heterogeneity in local resources, and that grazing therefore modulates diversity–biomass relationships. We tested our hypothesis across 35 rangeland sites...

A trail pheromone mediates the mutualism between ants and aphids

Li Chen
Mutualisms, like the ones between ants and aphids, evolve and persist when benefits outweigh the costs from the interactions between the partners. We show here that the trail pheromone of the red imported fire ant, Solenopsis invicta, can enhance these benefits by suppressing aphid walking dispersal and stimulating their reproduction. The cotton aphid, Aphis gossypii, was found to readily perceive and respond to two specific trail pheromonal components. Both Z,E-a-farnesene and E,E-a-farnesene suppressed walking dispersal...

The coordination between leaf and fine root litter decomposition and the difference of their controlling factors

Lulu Guo, Meifeng Deng, Sen Yang, Weixing Liu, Xin Wang, Jing Wang & Lingli Liu
Aim: As the two largest components of plant detritus input, leaf and root litter together determines ecosystem vegetation turnover and nutrient cycling rates. However, it remains unknown the similarities and differences between the controlling factors for their decomposition. We evaluated the relationship between leaf and fine root litter decomposition across biomes, and analyzed how litter traits, climate, soil conditions and decomposers shape their relationship. Location: Global. Time Period: 1984–2020. Major Taxa Studied: Vascular plant. Methods:...

Increased precipitation and nitrogen addition accelerate the temporal increase of soil respiration during eight-year old-field grassland succession

Jiajia Zhang, Jingyi Ru, Jian Song, Heng Li, Xiaoming Li, Yafei Ma, Zheng Li, Yuanfang Hao, Zhensheng Chi, Dafeng Hui & Shiqiang Wan
Ecological succession after disturbance plays a vital role in influencing ecosystem structure and functioning. However, how global change factors regulate ecosystem carbon (C) cycling in successional plant communities remains largely elusive. As part of an eight-year (2012-2019) manipulative experiment, this study was designed to examine the responses of soil respiration and its heterotrophic component to simulated increases in precipitation and atmospheric nitrogen (N) deposition in an old-field grassland undergoing secondary succession. Over the eight-year experimental...

Phylogeography and genetic diversity of the widespread katydid Ducetia japonica (Thunberg, 1815) across China

Zhi Jun Zhou, Yun Xia Zhen, Bei Guan, Lan Ma & Wen Jing Wang
Habitat fragmentation can lower migration rates and genetic connectivity among remaining populations of native species. Ducetia japonica as one of the most widespread katydids in China, but little is known about its genetic structure and phylogeographic distribution. We combined the five-prime region of cytochrome c oxidase subunit I (COI-5P), 11 newly developed microsatellite loci coupled with an ecological niche model (ENM) to examine the genetic diversity and population structure of D. japonica in China and...

Responses of soil temperature, moisture, and respiration to five-year warming and nitrogen addition in a semi-arid grassland

Jian Song, Jianyang Xia, Dafeng Hui, Mengmei Zheng, Jing Wang, Jingyi Ru, Haidao Wang, Qingshan Zhang, Chao Yang & Shiqiang Wan
How climate warming interacts with atmospheric nitrogen (N) deposition to affect carbon (C) release from soils remains largely elusive, posing a major challenge in projecting climate change‒terrestrial C feedback. As part of a five-year (2006–2010) field manipulative experiment, this study was designed to examine the effects of 24-hour continuous warming and N addition on soil respiration and explore the underlying mechanisms in a semi-arid grassland on the Mongolian Plateau, China. Across the five years and...

Data for: Plasticity and co-variation of root traits govern phosphorus acquisition among 20 wheat genotypes

Hongbo Li, Xin-Xin Wang, Jiaqi Zhang, Hong Wang & Zed Rengel
Trait plasticity (variation of a trait under environmental variability or gradients) and trait integration are both crucial for plant adaption to environmental change. Variations in different suite of root traits such as biomass allocation, morphology and physiology underlie diverse phosphorus (P) acquisition strategies among plants. Yet, how the intraspecific plasticity and integration of root traits influence plant adaptation to different P supply remains obscure. To characterize diverse adaptive strategies in relation to plant P acquisition,...

Increased interannual precipitation variability enhances the carbon sink in a semiarid grassland

Jingyi Ru, Shiqiang Wan, Dafeng Hui, Jian Song & Jing Wang
1. The amplifying interannual precipitation variability has been observed globally and is projected to intensify under climate change scenarios. However, its impacts on terrestrial vegetation and carbon (C) sink have not been well investigated. 2. As part of a field manipulative experiment with three precipitation variabilities (20%, 40%, and 60%) in a semiarid grassland, this study was conducted to examine the responses of ecosystem C cycling to increased precipitation variability. 3. Across the 3 experimental...

Data from: Malat1 as an evolutionarily conserved lncRNA, plays a positive role in regulating proliferation and maintaining undifferentiated status of early-stage hematopoietic cells

Xian-Yong Ma, Jian-Hui Wang, Jing-Lan Wang, Charles X. Ma, Xiao-Chun Wang & Feng-Song Liu
Background: The metastasis-associated lung adenocarcinoma transcription 1 (Malat1) is a highly conserved long non-coding RNA (lncRNA) gene. Previous studies showed that Malat1 is abundantly expressed in many tissues and involves in promoting tumor growth and metastasis by modulating gene expression and target protein activities. However, little is known about the biological function and regulation mechanism of Malat1 in normal cell proliferation. Results: In this study we conformed that Malat1 is highly conserved across vast evolutionary...

Intra-annual species gain overrides species loss in determining species richness in a typical steppe ecosystem after a decade of nitrogen enrichment

Ming Zhao, Hongxiang Zhang, Baskin Carol, Cunzheng Wei, Junjie Yang, Yunhai Zhang, Yong Jiang, Lin Jiang & Xingguo Han
Increasing deposition of atmospheric nitrogen (N) due to accelerated human activities is a threat to various ecosystems. However, there is a lack of long-term experimental evidence demonstrating the seasonal dynamics of plant species turnover that ultimately determine species richness in natural ecosystems under N enrichment. Moreover, the frequency of N addition also may affect species turnover in a community, but it is rarely studied. To assess the responses of a plant community to N addition,...

Data from: Nighttime warming enhances ecosystem carbon-use efficiency in a temperate steppe

Jing Wang, Qian Zhang, Jian Song, Jingyi Ru, Zhenxing Zhou, Jianyang Xia, Jeffrey Dukes & Shiqiang Wan
1. Reductions in the diurnal temperature range (DTR), e.g., greater increases in daily minimum than maximum temperatures, have occurred for several decades and are projected to continue over this century, which could affect terrestrial carbon (C) cycling. Carbon-use efficiency of plants (CUEp) and ecosystems (CUEe) represents the capacity of plants to capture C and ecosystems to store C fixed from the atmosphere, respectively. Few studies have examined how grassland CUE responds to asymmetric warming. 2....

Long-term litter removal rather than litter addition enhances ecosystem carbon sequestration in a temperate steppe

Jing Wang, Ang Zhang, Yujin Zheng, Jian Song, Jingyi Ru, Mengmei Zheng, Dafeng Hui & Shiqiang Wan
1. Global change can greatly affect plant productivity and subsequently litter input to soil, with potential impacts on soil carbon (C) fluxes. However, the effects of litter layer in mediating C cycling and budget at an ecosystem scale is still not clear. 2. As part of a long-term litter fall manipulation experiment in a temperate steppe on the Mongolian Plateau, this study was conducted to explore effects of litter removal and addition on ecosystem C...

Asymmetric responses of resource use efficiency to previous-year precipitation in a semi-arid grassland

Juanjuan Han, Jiquan Chen, Weiyu Shi, Jian Song, Dafeng Hui, Jingyi Ru & Shiqiang Wan
1. Intensified inter-annual fluctuations in precipitation could profoundly impact terrestrial ecosystems. However, how changes previous-year precipitation influence current ecosystem functioning (e.g., resource use efficiency) in semi-arid regions remains unclear. 2. In this study, water use efficiency (WUE) and light use efficiency (LUE) were investigated in a multi-year precipitation gradient experiment with seven treatment levels: 20%, 40% and 60% decreases and 20%, 40% and 60% increases in the amount of natural rainfall plus ambient precipitation. Plots...

Data from: Shrubs facilitate recruitment of Caragana stenophylla Pojark: microhabitat amelioration and protection against herbivory

Li-Na Xie, Hong-Yu Guo, Zhe Liu, Christopher A Gabler, Wei-Zhong Chen, Song Gu & Cheng-Cang Ma
Key message: Mature Caragana stenophylla shrubs facilitated intraspecific sapling establishment by two mechanisms: microhabitat amelioration and protection against herbivory. Facilitation was mediated by climate, grazing and sapling age. Context: Pre-existing shrubs could facilitate sapling establishment of woody plants, however, how these facilitation vary across abiotic and biotic stress gradients and the underlying mechanisms remain unclear. Aims: The aim of this study is understanding the facilitation of shrub on sapling establishment, and how the two underlying...

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