60 results match your criteria: "Center for Watershed Ecology[Affiliation]"

De novo assembly of a near-complete genome of aquatic vegetable Zizania latifolia in the Yangtze River Basin.

Sci Data

December 2024

Key Laboratory of Poyang Lake Environment and Resource Utilization, Ministry of Education, Center for Watershed Ecology, School of Life Sciences, Nanchang University, Nanchang, 330031, Jiangxi, P. R. China.

The cultivated Zizania latifolia, an aquatic vegetable prevalent in the Yangtze River Basin, represents a unique plant-fungus complex whose domestication is associated with host-parasite co-evolution. In this study, we present a high-quality, chromosome-scale genome assembly of cultivated Z. latifolia.

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To ensure the success of genetic rescue, we must minimise the potential negative effects of outbreeding depression that may arise from selecting source populations. The difficulty in assessing the likelihood of outbreeding depression has hindered its consideration in endangered species conservation. However, genomic research offers feasible indications.

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In this paper, magnetic nanopowders of FeNiCoCrY high-entropy alloy compositions were successfully prepared by the liquid phase reduction method, which represented a breakthrough from the traditional process of preparing high-entropy alloy nanopowders. The powders had a high specific surface area of 136.23 m/g and exhibited sustained, efficient, and rapid degradation characteristics for high concentrations of CR and ultra-high concentrations of Cr(VI) wastewater.

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Identification and analysis of MAPK cascade gene families of Camellia oleifera and their roles in response to cold stress.

Mol Biol Rep

May 2024

Jiangxi Province Key Laboratory of Watershed Ecosystem Change and Biodiversity, Center for Watershed Ecology, School of Life Sciences, Nanchang University, Nanchang, 330031, China.

Background: Low-temperature severely limits the growth and development of Camellia oleifera (C. oleifera). The mitogen-activated protein kinase (MAPK) cascade plays a key role in the response to cold stress.

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Single-cell RNA-seq reveals a link of ovule abortion and sugar transport in .

Front Plant Sci

February 2024

Jiangxi Province Key Laboratory of Watershed Ecosystem Change and Biodiversity, Center for Watershed Ecology, Institute of Life Science and School of Life Sciences, Nanchang University, Nanchang, China.

is the most important woody oil crop in China. Seed number per fruit is an important yield trait in . Ovule abortion is generally observed in and significantly decreases the seed number per fruit.

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Hydrological alteration drives chemistry of dissolved organic matter in the largest freshwater lake of China (Poyang Lake).

Water Res

March 2024

Lushan Botanical Garden, Chinese Academy of Sciences, Jiujiang 332900, China. Electronic address:

As the largest reactive organic carbon pool, dissolved organic matter (DOM) plays an important role in various biogeochemical processes in lake ecosystems. Recently, climate change-induced extreme events (e.g.

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Current biodiversity loss is generally considered to have been caused by anthropogenic disturbance, but it is unclear when anthropogenic activities began to affect biodiversity loss. One hypothesis suggests it began with the Industrial Revolution, whereas others propose that anthropogenic disturbance has been associated with biodiversity decline since the early Holocene. To test these hypotheses, we examined the unique vegetation of evergreen broadleaved forests (EBLFs) in East Asia, where humans have affected landscapes since the early Holocene.

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Land snail diversity in central China: revision of Möllendorff, 1899 (Gastropoda, Camaenidae), with descriptions of seven new species.

Zookeys

March 2023

Jiangxi Province Key Laboratory of Watershed Ecosystem Change and Biodiversity, Center for Watershed Ecology, Institute of Life Science and School of Life Sciences, Nanchang University, Nanchang 330031, China Nanchang University Nanchang China.

Central China harbors the native dart-sac-bearing camaenids . The genus is revised and seven new species are proposed based on museum material and newly collected specimens. This work confirmed that most species have restricted habitats.

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River-connected lakes are complicated and dynamic ecosystems due to their distinctive hydrological pattern, which could significantly impact the generation, degradation, and transformation processes of dissolved organic matter (DOM) and further regulate DOM chemistry in lakes. However, the molecular compositions and characteristics of DOM in river-connected lakes are still poorly understood. Thus, here the spatial variations of optical properties and molecular characteristics of DOM in a large river-connected lake (Poyang Lake) were explored via spectroscopic techniques and Fourier transform ion cyclotron resonance mass spectrometry (FT-ICR MS).

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Field plus lab experiments help identify freezing tolerance and associated genes in subtropical evergreen broadleaf trees: A case study of .

Front Plant Sci

February 2023

Jiangxi Province Key Laboratory of Watershed Ecosystem Change and Biodiversity, Center for Watershed Ecology, Institute of Life Science and School of Life Sciences, Nanchang University, Nanchang, China.

The molecular mechanisms of freezing tolerance are unresolved in the perennial trees that can survive under much lower freezing temperatures than annual herbs. Since natural conditions involve many factors and temperature usually cannot be controlled, field experiments alone cannot directly identify the effects of freezing stress. Lab experiments are insufficient for trees to complete cold acclimation and cannot reflect natural freezing-stress responses.

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Flooding duration affects the temperature sensitivity of soil extracellular enzyme activities in a lakeshore wetland in Poyang Lake, China.

Sci Total Environ

May 2023

Jiangxi Province Key Laboratory of Watershed Ecosystem Change and Biodiversity, Center for Watershed Ecology, Institute of Life Science and School of Life Sciences, Nanchang University, Nanchang 330031, PR China; Jiangxi Poyang Lake Wetland Conservation and Restoration National Permanent Scientific Research Base, National Ecosystem Research Station of Jiangxi Poyang Lake Wetland, Nanchang University, Nanchang 330031, PR China; Key Laboratory of Poyang Lake Environment and Resource Utilization, Ministry of Education, Nanchang University, Nanchang 330031, PR China. Electronic address:

Extracellular enzymes play central roles in the biogeochemical cycles in wetland ecosystems. Their activities are strongly impacted by hydrothermal conditions. Under the ongoing global change, many studies reported the individual effects of flooding and warming on extracellular enzyme activities, however, few researches investigated their interactive effects.

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The determining factors of sediment nutrient content and stoichiometry along profile depth in seasonal water.

Sci Total Environ

January 2023

Jiangxi Regional Economic Research Institute, School of Public Policy and Administration, School of Infrastructure Engineering, Nanchang University, Nanchang 330031, China.

In the recent decades, the area of seasonal water (SEW) has substantially increased at the global scale. To evaluate nutrient dynamics in aquatic ecosystems, previous studies have analyzed the determining factors of sediment nutrient content and stoichiometry on whole sediment profiles without depth separation on SEW sites. Such a methodology assumes that SEW sediment is a uniform unit and its nutrient dynamics are regulated by the same mechanism at various depths (uniformity assumption).

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Seasonal flooding wetland expansion would strongly affect soil and sediment organic carbon storage and carbon-nutrient stoichiometry.

Sci Total Environ

July 2022

Jiangxi Institute of Ecological Civilization, School of Resources and Environment, Nanchang University, Nanchang 330031, China.

In the past few decades, many non-flooding uplands (NF) and permanent flooding waters (PF) have been turned into seasonal flooding wetlands (SF) at the global scale. This trend could severely threaten global climate system by changing carbon cycling in terrestrial and aquatic ecosystems. However, the effects of SF expansion on soil and sediment organic carbon (SOC) storage and carbon-nutrient stoichiometry are far from clearly understood.

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The classical niche theory supports the idea that stable coexistence requires ecological differences between closely related species. However, information on waterbirds coexistence in the entirely landlocked freshwater system of Poyang Lake is not well understood, especially when the available biomass of their food in the area decreases. In this study, we tested the ecological segregation mechanisms in the 2015/2016 and 2016/2017 wintering periods among eight herbivorous waterbirds (including the Siberian crane , hooded crane , white-naped crane , common crane , greater white-fronted goose , bean goose , swan goose , and tundra swan ) at Poyang Lake.

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Comparative phylogeography study reveals introgression and incomplete lineage sorting during rapid diversification of Rhodiola.

Ann Bot

January 2022

The Ministry of Education Key Laboratory for Biodiversity Science and Ecological Engineering, Institute of Biodiversity Science, Institute of Botany, Tibet University-Fudan University Joint Laboratory for Biodiversity and Global Change, Fudan University, Shanghai, China.

Background And Aims: Many plant taxa in the Qinghai-Tibetan Plateau (QTP) and the Hengduan Mountains (HM) radiated rapidly during the Quaternary but with frequent secondary contact between diverging populations. Incomplete lineage sorting and introgressive hybridization might be involved during the rapid radiation, but their effects on phylogeography have not been fully determined.

Methods: We investigated the chloroplast DNA (cpDNA)/internal transcribed spacer (ITS) sequence variations of 611 samples of Rhodiola bupleuroides, R.

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Complete maternal mitochondrial genome of the freshwater mussel (Bivalvia: Unionidae).

Mitochondrial DNA B Resour

August 2021

Jiangxi Province Key Laboratory of Watershed Ecosystem Change and Biodiversity, Center for Watershed Ecology, Institute of Life Science and School of Life Sciences, Nanchang University, Nanchang, China.

The genus Simpson, 1900 comprises seven valid species, and (Heude, 1874) is the type species of this genus. Previous phylogenetic studies using complete mitochondrial genomes showed that was not monophyletic, but the result was hampered by incomplete species sampling and lack of the type species of this genus. In this study, we collected from the type locality and determined its complete maternal mitochondrial genome.

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Aim: How plants cope with increases in population density via root plasticity is not well documented, although abiotic environments and plant ontogeny may have important roles in determining root response to density. To investigate how plant root plasticity in response to density varies with soil conditions and growth stages, we conducted a field experiment with an annual herbaceous species ().

Methods: Plants were grown at low, medium, and high densities (13.

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High-throughput sequencing-based microsatellite genotyping for polyploids to resolve allele dosage uncertainty and improve analyses of genetic diversity, structure and differentiation: A case study of the hexaploid Camellia oleifera.

Mol Ecol Resour

January 2022

Jiangxi Province Key Laboratory of Watershed Ecosystem Change and Biodiversity, Center for Watershed Ecology, Institute of Life Science and School of Life Sciences, Nanchang University, Nanchang, China.

Conventional microsatellite (simple sequence repeat, SSR) genotyping methods cannot accurately identify polyploid genotypes leading to allele dosage uncertainty, introducing biases in population genetic analysis. Here, a new SSR genotyping method was developed to directly infer accurate polyploid genotypes. The frequency distribution of SSR sequences was obtained based on deep-coverage high-throughput sequencing data.

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Background: Interannual variation in resource abundance has become more unpredictable, and food shortages have increasingly occurred in the recent decades. However, compared to seasonal fluctuations in resource abundance, the influences of interannual variation in resource abundance on the dietary niches of consumers remain poorly understood. Poyang Lake, China, is a very important wintering ground for the globally endangered Siberian Crane (Leucogeranus leucogeranus), White-naped Crane (Grus vipio), and Hooded Crane (G.

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Many waterbird populations have become increasingly dependent on agricultural habitats for feeding. While habitat destruction has been proposed as a key reason forcing waterbirds to move from natural habitats to agricultural habitats, few have used long-term data to test this hypothesis. The Siberian crane () is an IUCN Critically Endangered species.

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Scaling responses of leaf nutrient stoichiometry to the lakeshore flooding duration gradient across different organizational levels.

Sci Total Environ

October 2020

Jiangxi Province Key Laboratory of Watershed Ecosystem Change and Biodiversity, Center for Watershed Ecology, Institute of Life Science and School of Life Sciences, Nanchang University, 999 Xuefu road, Nanchang 330031, PR China; National Ecosystem Research Station of Jiangxi Poyang Lake Wetland, Nanchang 330038, PR China; Guangxi Key Laboratory of Water Engineering Materials and Structures, Guangxi Hydraulic Research Institute, Nanning, China. Electronic address:

Most wetlands have been subject to changes in flooding regimes by climate change and human activities, resulting in widespread alteration of wetland plants at different organizational levels. However, scaling the responses of wetland plants to changes in flooding regimes is still challenging, because flooding could indirectly affect wetland plants through affecting environment factors (e.g.

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Inferring the Origin of Cultivated , an Aquatic Vegetable of a Plant-Fungus Complex in the Yangtze River Basin.

Front Plant Sci

November 2019

Jiangxi Province Key Laboratory of Watershed Ecosystem Change and Biodiversity, Center for Watershed Ecology, Institute of Life Science and School of Life Sciences, Nanchang University, Nanchang, China.

Crop domestication is one of the essential topics in evolutionary biology. Cultivated , domesticated as the special form of a plant-fungus (the host and the endophyte ) complex, is a popular aquatic vegetable endemic in East Asia. The rapid domestication of cultivated can be traced in the historical literature but still need more evidence.

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Genetic Diversity of Crop Wild Relatives under Threat in Yangtze River Basin: Call for Enhanced In Situ Conservation and Utilization.

Mol Plant

December 2019

Jiangxi Province Key Laboratory of Watershed Ecosystem Change and Biodiversity, Center for Watershed Ecology, Institute of Life Science and School of Life Sciences, Nanchang University, Nanchang 330031, China. Electronic address:

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Incomplete lineage sorting and introgression are 2 major and nonexclusive causes of species-level non-monophyly. Distinguishing between these 2 processes is notoriously difficult because they can generate similar genetic signatures. Previous studies have suggested that 2 closely related duck species, the Chinese spot-billed duck and the mallard were polyphyletically intermixed.

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Seasonal and inter-annual community structure characteristics of zooplankton driven by water environment factors in a sub-lake of Lake Poyang, China.

PeerJ

September 2019

School of Life Science and Center for Watershed Ecology of Institute of Life Science; School of Life Sciences; Jiangxi Province Key Laboratory of Watershed Ecosystem Change and Biodiversity, Nanchang University; Qufu Normal University, Qufu, China.

Background: Sub-lakes are important for the maintenance of the ecosystem integrity of Lake Poyang, and zooplankton play an important role in its substance and energy flow.

Methods: A seasonal investigation of zooplankton was conducted in spring (April), summer (July), autumn (October) and winter (January of the following year) from 2012 to 2016 in a sub-lake of Lake Poyang. The aim of the present study was to understand the seasonal dynamics and interannual variation of zooplankton communities and their relationship to environmental factors.

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