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1

A new spirofilid ciliate from the Yellow Sea: Metastrongylidium distichum n. gen., n. sp. [Ciliophora, Stichotrichia]

100%
Xu K., Lei Y.
Acta Protozoologica
|
2007
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tom 46
|
nr 2
2

Two new and two poorly known species of Ancistrum (Ciliophora, Scuticociliatia, Thigmotrichida) parasitizing marine molluscs from Chinese coastal waters of the Yellow Sea

81%
Xu K., Song W., Warren A.
Acta Protozoologica
|
2015
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tom 54
|
nr 3
3

Increasing in vitro microrhizome production of ginger (Zingiber officinale Roscoe)

81%
Zheng Y., Liu Y., Ma M., Xu K.
Acta Physiologiae Plantarum
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2008
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tom 30
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nr 4
In this study, using the quadratic saturation 310 D-optimal design method, we examined the effect of kinetin (KT), gibberellic acid (GA), and naphthalene acetic acid (NAA) on microrhizome production in ginger. The effect of GA on rhizome induction was larger than that of KT or NAA. Using simulation and optimality selection for tissue culture, we found that concentrations of GA, KT, and NAA of 1.33–2.35, 0.49–0.66, and 0.62 g/l, respectively, gave a microrhizome weight of over 0.25 g. The optimal conditions for microrhizome production were 80 g/l sucrose, 2 9 MS macro-elements, and 1 9 MS microelements, with a photoperiod of 24L:0D (light/dark). At the same time, 100% survival could be achieved on transfer of the in vitro ginger plantlets with microrhizomes to soil.
4

An integrated analysis of the rosmarinic acid-biosynthetic genes to uncover the regulation of rosmarinic acid pathway in Salvia miltiorrhiza

81%
Song J., Ji Y., Xu K., Wang Z.
Acta Physiologiae Plantarum
|
2012
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tom 34
|
nr 4
Medicinal Salvia miltiorrhiza is renowned for its curative effects on cardiovascular diseases. Its biologically active ingredients include rosmarinic acid (RA) and its derivative, salvianolic acid B (SAB). We used available bioinformatics tools to improve our knowledge about the biosynthesis of these phenolic compounds. Our comprehensive description of cis-acting regulatory elements in the RA pathway provides insights into the potential transcriptional regulation of that pathway. For example, a lightresponsive element was the most abundant and widespread motif, suggesting that light is a universal regulatory factor of RA synthesis in S. miltiorrhiza. Therefore, we examined gene transcripts and the accumulation of hydrophilic pharmacological compounds in light-treated plants. Canonical correlation analysis was also used to construct a gene-tometabolite network. We obtained a high correlation coefficient (0.986), which generally indicated a clear and close relationship between RA-biosynthetic genes and desirable metabolites. We also screened PAL1, C4H, and HPPR, genes directly linked to the accumulation of RA and SAB. Our results can serve as the basis for better understanding RA synthesis in S. miltiorrhiza, and they will increase the practical potential for metabolic engineering of this important medicinal species.
5

Five new spathidiids (Ciliophora: Haptoria) from Caribbean tank bromeliads

71%
Foissner W., Wolf K. W., Kumar S., Xu K., Quintela-Alonso P.
Acta Protozoologica
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2014
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tom 53
|
nr 2
6

The effect of plant growth regulators on recovery of wheat physiological and yield-related characteristics at booting stage following chilling stress

61%
Zhang W., Huang Z., Xu K., Liu L., Zeng Y., Ma S., Fan Y.
Acta Physiologiae Plantarum
|
2019
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tom 41
|
nr 08
Chilling stress has a strong negative impact on the growth and development of winter wheat (Triticum aestivum L.). To investigate the recovery of physiological function and yield formation by plant growth regulators following chilling stress, we performed low-temperature phytotron experiments at the booting stage, and sprayed 6-benzylamino adenine (6-BA), salicylic acid (SA), brassinolide (BR) and abscisic acid (ABA) after chilling stress. Plant growth regulators significantly enhanced SPAD value and net photosynthetic rate (Pn) in flag leaves following chilling stress (p < 0.05). Compared with the control group sprayed with distilled water, stomatal conductance (Gs) and transpiration rate (Tr) increased, while intercellular carbon dioxide concentration (Ci) decreased. In addition, the concentration of malondialdehyde (MDA) was significantly decreased, and the activities of superoxide dismutase (SOD) and peroxidase (POD) were enhanced (p < 0.05). Plant growth regulators also increased the grain filling rate during the 14 days after anthesis, thereby increasing grain weight. The grain number per spike, 1000-kernel weight, and yield per plant after harvest were also significantly enhanced (p < 0.05). Thus, spraying plant growth regulators at the booting stage relieved the adverse effects on physiological activity in wheat flag leaves caused by chilling stress, and 6-BA and SA were particularly effective.
7

Upregulated miR-96-5p inhibits cell proliferation by targeting HBEGF in T-cell acute lymphoblastic leukemia cell line

61%
Xu K., Yan X., Ouyang G., Feng J., Ye L., Hu X., Liu D.
Folia Histochemica et Cytobiologica
|
2020
|
tom 58
|
nr 3
8

IgG silencing induces apoptosis andsuppresses proliferation, migration and invasion in LNCaP prostate cancer cell

51%
Xu Y., Chen B., Zheng S., Wen Y., Xu A., Xu K., Li B., Liu C.
Cellular and Molecular Biology Letters
|
2016
|
tom 21
9

Analysis of biochemical and physiological changes in wheat tissue culture using different germplasms and explant types

51%
Yang S., Xu K., Wang Y., Bu B., Huang W., Sun F., Liu S., Xi Y.
Acta Physiologiae Plantarum
|
2015
|
tom 37
|
nr 06
To select adequate wheat germplasms for genetic transformation, tissue culture efficiency of 21 different wheat lines (Einkorn, Emmer, Durum wheat, etc.) were compared, along with two different explants, namely, immature embryo and mature embryo. The results showed that the average differentiation rate and regeneration rate of immature embryo calli (46.5 and 20.82 %) were better than those for mature embryo calli (14.03 and 4.37 %). The best genotypes for immature embryo callus culture were ‘Ningchun 16’ and ‘Ei 15’, ‘Xiaoyan 22’, followed by ‘Durum 332’ and ‘Tr 256’. The best genotypes for mature embryo callus culture were ‘Ying 4286’, ‘Yunyin 01’, and ‘Xiaoyan 22’. To analyze how physiological and biochemical settings influence the totipotency of calli, different physiological and biochemical indices were analyzed. Differences between immature embryo callus and mature embryo callus were significant, as well as differences of most indices among different wheat types. The interaction effects between explant types and genotypes were also significant. Correlation analysis results showed that the total phenol and soluble sugar contents were significantly correlated with callus differentiation and regeneration rates.
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