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1

Sinopachymeridium popovi gen. and sp. nov. - a new fossil true bug (Heteroptera: Pachymeridiidae) from the Middle Jurassic of Inner Mongolia, China

100%
Yao Y., Cai W., Ren D.
Annales Zoologici
|
2006
|
tom 56
|
nr 4
Sinopachymeridium popovi, a new genus and species of fossil true bugs is described. The new species is reported from the Jiulongshan Formation (Middle Jurassic), in Daohugou Village, Shantou Town, Ningcheng County, Inner Mongolia, China. It clearly belongs to Pachymeridiidae by Sc, R and M diverging at a single point and presence costal fracture. The new genus is most similar to Pachycoridium Popov, 1986, but can be distinguished from the latter by the larger body, rostrum extending to second abdominal sternite, first vein of membrane situated remote from anterior margin of fore wing and fourth and fifth veins forming a merged vein.
2

Growth and physiological responses of grape (Vitis vinifera “Combier”) to excess zinc

88%
Yang Y., Sun C., Yao Y., Zhang Y., Achal V.
Acta Physiologiae Plantarum
|
2011
|
tom 33
|
nr 4
Cuttings of Vitis vinifera (cultivar Combier) were exposed to seven different zinc (Zn) concentrations (control, 3.5, 7.0, 14.0, 21.0, 28.0, and 35.0 mM) to investigate growth and physiological responses to excess amount of zinc (Zn). The apparent plant growth, as indicated by daily height growth, daily stem diameter variation, and biomass accumulation, was increased by 3.5–7.0 mM surplus Zn addition. Coupled with the increase in plant growth, grape retained low level of leaf Zn concentration, and also retained high level of leaf iron concentration due to increasing translocation of iron (Fe) from root and shoots to leaves. Leaf N and K were increased or found at a constant high level, paralleling with low oxidative pressure and enhanced catalase (CAT) activity. Moreover, plant growth was depressed under high Zn levels (>14.0 mM). Generally excess Zn was stored in the non-sensitive plant parts (roots and shoots), and it caused significant reductions of P, Fe, Mn, Cu in different parts of plant. At the same time, excess Zn caused a pronounced increase in abscisic acid concentration. Our results showed that cultivar Combier is a highly Zn-tolerant grape cultivar and could be used as pioneer plants in metalliferous site and in acidic soil of the tropical and subtropical area.
3

Responses of photosystem II photochemistry and the alternative oxidase pathway to heat stress in grape leaves

76%
Sun Y., Liu X., Zhai H., Gao H., Yao Y., Du Y.
Acta Physiologiae Plantarum
|
2016
|
tom 38
|
nr 10
4

Variations in internal water distribution and leaf anatomical structure in maize under persistently reduced soil water content and growth recovery after re-watering

76%
Sun Y., Wang H., Sheng H., Liu X., Yao Y., Gong C.
Acta Physiologiae Plantarum
|
2015
|
tom 37
|
nr 12
Episodes of regional drought are increasing and are frequently associated with increased duration and intensity. However, relatively little is known about effects of long-lasting drought on leaf microscopic structure and physiological metabolism of plants. In this study, we investigated internal water re-distribution and leaf anatomical structure of maize (Zea mays L.) grown under persistently reduced soil water content. Meanwhile, the threshold of soil water content at which maize cannot recover growth vitality after re-watering was determined. Our results showed that during persistent reductions in the field water capacity from 75 to 25 %, plant growth declined, while the water content in maize decreased following the order from the lower to upper leaves and their leaf sheathes to the stem and roots. At 20 % of field water capacity, the volume of bulliform cells declined, accompanied by an inward shrinkage of cell walls. Under field water capacity below 20 %, the number of chloroplasts in bundle-sheath cells decreased, chloroplasts in mesophyll cells deformed from oval to round, concomitant of a near to zero net photosynthetic rate. It was demonstrated that the growth vitality of maize plants could be recovered by rewatering even if field water capacity reduced to 15 %, but not to 10 %.
5

The expression level of anthocyanidin synthase determines the anthocyanin content of crabapple (Malus sp.) petals

76%
Zhang J., Han Z., Tian J., Zhang X., Song T., Yao Y.
Acta Physiologiae Plantarum
|
2015
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tom 37
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nr 06
In addition to contributing to the coloration of plant organs and their defense against herbivores, the consumption of anthocyanins in the human diet has a number of health benefits. Crabapple (Malus sp.) represents a valuable experimental model system to research the mechanisms and regulation of anthocyanin accumulation, in part due to the often vivid and varied petal and leaf coloration that is exhibited by various cultivars. The enzyme anthocyanidin synthase (ANS) plays a pivotal role in anthocyanin biosynthesis; however, the relationship between ANS expression and petal pigmentation has yet to be established in crabapple. To illuminate the mechanism of anthocyanin accumulation in crabapple petals, we evaluated the expression of two crabapple ANS allelic genes (McANS-1 and McANS-2) and the levels of anthocyanins in petals from cultivars with dark red (‘Royalty’) and white (‘Flame’) petals, as well as another (‘Radiant’) whose petals have an intermediate pink color. We determined that the expression of McANS in the three cultivars correlated with the variation of anthocyanin accumulation during different petal developmental stages. Furthermore, transgenic tobacco plants constitutively overexpressing one of the two McANS genes, McANS-1, had showed elevated anthocyanin accumulation and a deeper red coloration in their petals than those from untransformed control lines. In conclusion, we propose that McANS are responsible for anthocyanin accumulation during petal coloration in different crabapple cultivars.
6

Isolation and expression of McF3H gene in the leaves of crabapple

76%
Shen H., Zhang J., Yao Y., Tian J., Song T., Geng J., Gao J.
Acta Physiologiae Plantarum
|
2012
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tom 34
|
nr 4
The molecular mechanisms involved in leaf color variation were investigated in crabapple. Using the total RNA from the leaves of crabapple ‘Royalty’ as the template, the full cDNA of F3H (Flavanone-3-hydroxylase) gene (1,370 bp) was cloned by reverse transcription polymerase chain reaction and rapid-amplification of cDNA ends. The gene was named as McF3H, containing a 1,092-bp open reading frame encoding a protein of 364 amino acids. Corresponding genomic DNA sequence was 1,983 bp, containing two introns, and all the cleave sites obeyed the GT–AG rule. The expression of McF3H gene following leaf development was determined by real-time quantitative PCR in the leaves of three crabapple varieties, ‘Flame’ (both young and mature leaves are green), ‘Radiant’ (young leaves are orange to red and mature leaves are green) and ‘Royalty’ (both young and mature leaves are red to purple). The results showed that McF3H gene was expressed in both red and green leaves. But the expression levels of McF3H gene in ever-red-leafed ‘Royalty’ were significantly higher than in evergreen-leafed ‘Flame’ at all stages of leaf development. The transcript level in ‘Radiant’ showed the similar temporal pattern to the variation of leaf color following its leaf development. Also, the anthocyanin accumulation levels in crabapple leaves were consistent with the color variation of leaves. These results suggest that McF3H gene is one of the important structure genes related to anthocyanin accumulation in crabapple leaves and the red coloration of crabapple leaf is associated with high expression level of this gene.
7

Systematic assessment of reference genes for RT-qPCR across plant species under salt stress and drought stress

76%
Xiao X., Wu X., Ma J., Li P., Li T., Yao Y.
Acta Physiologiae Plantarum
|
2015
|
tom 37
|
nr 09
Suitable reference gene (RGs) is the prerequisite for accurate normalization of real-time quantitative PCR (RT-qPCR) data. However, previous results are diverse in various researches that focused on selecting stable RGs. This study aims at systematically assessing various RGs in plants under salt stress or drought stress by collection of geNorm rankings of genes, data transformation and statistic analysis. Although none of the analyzed genes can guarantee universally stable expressions in plant species under salt stress or drought stress, we found that 18S (18S ribosomal RNA) was generally the least stable gene under salt and drought stress. This gene should not be used as the RG in RT-qPCR. On the contrary, it is least risk to use EF1 for salt stress and TIP41 for drought treatment experiments. We compared the effects of salt and drought stresses on 7 frequently used RGs through paired-samples T test. The expression of Ubiquitin gene under drought stress is much more unstable than that under salt stress. The tested genes belonging to multigene family and having different stability could be one reason of variations in the published studies, which was supported by the analysis of expression profile of Salicornia europaea transcriptome. This is the first systematic assessment quantifying global stability of Rgs across plant species under salt stress and drought stress, which will improve our understanding of RGs and facilitate the future work on RGs selection.
8

Dynamic regulation of mRNA translation in neurons by FMRP and microRNAs

76%
Muddashetty R., Gross C., Yao Y., Nalavadi N., Warren S. T., Bassell G. J.
Acta Neurobiologiae Experimentalis
|
2013
|
tom 73
|
nr Suppl.1
Long term synaptic plasticity underlying learning and memory is believed to require the reversible and dynamic regulation of local protein synthesis, which is dysregulated in fragile x syndrome, the most common form of inherited intellectual disability and autism. Fragile x syndrome is caused by the loss of the Fragile X Mental Retardation, FMRP, an mRNA binding protein involved in the regulation of local protein synthesis at synapses. We elucidated a cooperative role and dynamic interaction between the Fragile X Mental Retardation, FMRP, and microRNAs to repress translation at synapses, which can be rapidly de-repressed in response to activation of gp1 metabotropic glutamate receptors. One FMRP target mRNA of interest has been postsynaptic density-95, PSD-95, which is localized to dendrites and can be translated at synapses in response to activation of mGluRs. More recent work has revealed the role of other microRNAs to regulate FMRP target mRNA translation that appears important for control of neuronal excitability. We speculate that fragile x syndrome may result from synaptic protein imbalances due to dysregulation of microRNAmediated control that is important for control of neuronal development, excitability and plasticity.
9

Concentrations and speciation of mercury in soil affected by bird droppings

76%
Yao Y., Fang F., Wu H., Wu M., Kuang Y., Lin Y.
Polish Journal of Environmental Studies
|
2019
|
tom 28
|
nr 3
This study investigates the effects of bird droppings on mercury pollution levels in soil, specifically on the speciation and total concentration of mercury (Hg) in soil from Tongli Wetland, East China. Thirty soil samples and four bird dropping samples were collected from Tongli Wetland along with fifteen eggshells and five feathers from Heron Branch birds. Results indicated that bird droppings affect local soil’s physic-chemical properties and Hg accumulation. Additionally, heron feathers were found to contain more total mercury (HgT) than their eggshells. Hg concentration in soil that is affected by bird dropping was determined to be 0.194±0.026 mg/kg; concentration in soil without bird droppings was 0.104±0.039 mg/kg. Therefore, HgT concentration in the former exceeded that of the latter (86.54%). Numerical analysis revealed that concentrations of water-soluble (F1), acid-soluble (F2), alkali-soluble (F3), hydrogen peroxide-soluble (F4), and residual mercury (F5) in soil that is affected by bird dropping were higher in soil that isn’t affected by bird droppings. However, concentrations of F1 remained mostly stable. We found a positive correlation between Hg concentrations in soil and excrement and concentrations of total carbon (Ctot), total nitrogen (Ntot), and hydrogen (H), in addition to an exponential proportional relationship between C/N and Hg/C. We concluded that fresh bird droppings in soil may promote mercury enrichment. Furthermore, bird droppings and highly decomposed humus increase soil HgT concentration when they remain in soil for an extended period of time.
10
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Content available

Effects of nitrogen on growth parameters and photosynthetic characteristics of P. chinense Schneid. Seedlings in three soil types

76%
Gao S., Gu T., He J., Meng Ying W., Ren H., Wang Y., Yao Y.
Journal of Elementology
|
2023
|
tom 28
|
nr 2
11
Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik
Content available

Isolation of biosynthesis related transcripts of 2,3,5,4'-tetrahydroxy stilbene-2-O-beta-D-glucoside from Fallopia multiflora by suppression subtractive hybridization

64%
Zhao W., Sheng S., Liu Z., Lu D., Zhu K., Li X., Zhao S., Yao Y.
Acta Societatis Botanicorum Poloniae
|
2014
|
tom 83
|
nr 2
2,3,5,4'-tetrahydroxy stilbene-2-O-ß-D-glucoside (THSG) exerts multiple pharmacodynamic actions, found in Fallopia multiflora, but the biosynthesis pathway of THSG is still unclear. To clear this ambiguity, we constructed suppression subtractive hybridization (SSH) libraries to screen the genes involved in THSG biosynthesis from two F. multiflora varieties, which vary significantly in THSG content. Twelve non-redundant differentially expressed sequence tags were obtained and the full lengths of 4 unreported fragments were amplified by rapid amplification of cDNA ends. We totally got 7 fulllength transcripts, and all of them were aligned to the transcriptome and digital gene expression tag profiling database of four F. multiflora tissues (root, stem and leaf from Deqing F. multiflora and another root from Chongqing F. multiflora; data unpublished) using local BLAST. The results showed that there was a significant, organ specific difference in the expression of fragments and full-length sequences. All the sequences were annotated by aligning to nucleotide and protein databases. Kyoto Encyclopedia of Genes and Genomes pathway analysis indicated that THSG biosynthesis was correlated with multiple life activities.
12

Antioxidant defense against rust infection in the leaf tissue of Malus crabapple

64%
Duan Y., Hao S., Luo R., Lu Y., Li G., Zhang J., Tian J., Yao Y.
Acta Physiologiae Plantarum
|
2019
|
tom 41
|
nr 05
Plant tissues and cells can sense and transmit stress signals, change their morphological structures, alter protein and gene expression, and activate metabolic pathways to adapt to stressful environments. However, the internal and external resistance mechanisms related to antioxidation in local tissues or cells suffering from biotic stress remain unclear. We studied the response of Malus crabapple leaves to cedar-apple rust infection, and the results revealed that significant color changes and flavonoid compound accumulation (especially anthocyanins) occurred in the rust-infected tissue (RIT), whereas no significant color changes and only flavonol and flavanone accumulation occurred in the non-infected tissue (NIT). There was an up-regulation of expression of the key structural genes and MYBs related to anthocyanins biosynthesis in the RIT, while its expression related to flavonol and flavanone biosynthesis was up-regulated in the NIT. Moreover, the accumulation of glucose, sucrose, and sorbitol among the tested carbohydrates was successively induced at higher levels in the RIT and NIT. Importantly, rust infection increased the contents of jasmonate (JA), abscisic acid (ABA), and ethylene (ETH), and significantly up-regulated related key genes in the RIT and NIT during rust spot expansion. Spearman’s correlation and redundancy analyses indicated that ABA and ETH were potentially involved in oxidative defense responses to rust spot expansion by initiating the transcription of key genes, increasing the sugar supply, and adjusting the osmotic balance.
13

Isolation and characterization of a C-repeat binding factor (CBF)-like gene in cassava (Manihot esculenta Crantz)

52%
Li R., Ji Y., Fan J., Yang C., Yao Y., Zhou Y., Duan R., Liu J., Fu S., Hu X., Guo J.
Acta Physiologiae Plantarum
|
2014
|
tom 36
|
nr 11
Cassava (Manihot esculenta Crantz) is a tropical and subtropical plant and susceptible to chilling injury. In this research, a C-repeat binding factor (CBF)-like gene (GenBank accession number JQ339740) has been isolated from cassava, and named as MeCBF1. The full-length DNA of MeCBF1 is 1,037 base pair (bp), without intron. The 5' untranslated region is 102 bp, the 3' untranslated region is 239 bp, and the open reading frame is 696 bp encoding 231 amino acids. The deduced amino acid sequence of MeCBF1 contains two CBF conserved motifs of PKK(P/R)AGRxKFxETRHP and DSxWR. The MeCBF1 shows 83 % homology to the CRT/DRE binding factor 1 from Hevea brasiliensis (Accession no. AAY43213.1). However, in cassava, the MeCBF1 target genes showed low similarity to the CBF/DREB regulated genes in Arabidopsis thaliana. Quantitative real-time PCR showed that the MeCBF1 was highly expressed in stems and leaves, and lowly expressed in roots. In addition, the expression of the MeCBF1 quickly responded to low temperature stress (4°C). These results suggest that, the MeCBF1 is functional in cassava. Further studies on the MeCBF1 might be helpful to reveal molecular mechanism of cassava’s high sensitivity to low temperature.
14

Large-scale de novo transcriptome analysis reveals specific gene expression and novel simple sequence repeats markers in salinized roots of the euhalophyte Salicornia europaea

52%
Ma J., Xiao X., Li L., Maggio A., Zhang D., Mohamad O. A. A., Oosten M. V., Huang G., Sun Y., Tian C., Yao Y.
Acta Physiologiae Plantarum
|
2018
|
tom 40
|
nr 08
15

Epac1 is involved in cell cycle progression in lung cancer through PKC and Cx43 regulation

52%
Sun Q., Wang D., Ai G., Tian L., Zhao L., Chen R., Wang K., Guo D., Yao Y., Liu W., Kong X., Chen X., Zhang Y.
Folia Histochemica et Cytobiologica
|
2018
|
tom 56
|
nr 1
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