Temperature-dependent growth and hypericin biosynthesis in Hypericum perforatum

2019 ◽  
Vol 139 ◽  
pp. 613-619
Author(s):  
Yuanyuan Yao ◽  
Tianlan Kang ◽  
Ling Jin ◽  
Zihan Liu ◽  
Zhen Zhang ◽  
...  
Keyword(s):  
Hypericum Perforatum ◽  
Temperature Dependent ◽  
Dependent Growth

KEX2 mutations suppress RNA polymerase II mutants and alter the temperature range of yeast cell growth

1989 ◽  
Vol 9 (6) ◽  
pp. 2341-2349
Author(s):  
C Martin ◽  
R A Young
Keyword(s):  
Rna Polymerase ◽  
Rna Polymerase Ii ◽  
Single Gene ◽  
Yeast Cells ◽  
Temperature Sensitive ◽  
Temperature Dependent ◽  
Growth Properties ◽  
Cold Sensitive ◽  
Dependent Growth ◽  
Kex2 Protease

Suppressors of a temperature-sensitive RNA polymerase II mutation were isolated to identify proteins that interact with RNA polymerase II in yeast cells. Ten independently isolated extragenic mutations that suppressed the temperature-sensitive mutation rpb1-1 and produced a cold-sensitive phenotype were all found to be alleles of a single gene, SRB1. An SRB1 partial deletion mutant was further investigated and found to exhibit several pleiotropic phenotypes. These included suppression of numerous temperature-sensitive RNA polymerase II mutations, alteration of the temperature growth range of cells containing wild-type RNA polymerase, and sterility of cells of alpha mating type. The ability of SRB1 mutations to suppress the temperature-sensitive phenotype of RNA polymerase II mutants did not extend to other temperature-sensitive mutants investigated. Isolation of the SRB1 gene revealed that SRB1 is KEX2. These results indicate that the KEX2 protease, whose only known substrates are hormone precursors, can have an important influence on RNA polymerase II and the temperature-dependent growth properties of yeast cells.

Pythium myriotylum is recovered most frequently from Pythium soft-rot infected ginger rhizomes in China

Plant Disease ◽  
2021 ◽  
Author(s):  
Paul Daly ◽  
Yifan Chen ◽  
Qimeng Zhang ◽  
Hongli Zhu ◽  
Jingjing Li ◽  
...  
Keyword(s):  
Severe Disease ◽  
Zingiber Officinale ◽  
Soft Rot ◽  
Temperature Dependent ◽  
Pythium Myriotylum ◽  
Disease Symptoms ◽  
Ginger Rhizome ◽  
Oomycete Pathogen ◽  
Dependent Growth ◽  
Pythium Soft Rot

Pythium soft rot is a major soil-borne disease of crops such as ginger (Zingiber officinale). Our objective was to identify which Pythium species were associated with Pythium soft-rot of ginger in China, where approximately 20% of global ginger production is from. Oomycetes infecting ginger rhizomes from seven provinces were investigated using two molecular markers, the internal transcribed spacer (ITS) and cytochrome c oxidase subunit II (CoxII). In total, 81 isolates were recovered and approximately 95% of the isolates were identified as Pythium myriotylum and the other isolates were identified as either P. aphanidermatum or P. graminicola. Notably, the P. myriotylum isolates from China did not contain the SNP in the CoxII sequence found previously in the P. myriotylum isolates infecting ginger in Australia. A subset of 36 of the isolates was analyzed repeatedly by temperature-dependent growth, severity of disease on ginger plants and aggressiveness of colonization of ginger rhizome sticks. In the pathogenicity assays, 32/36 of the isolates were able to significantly infect and cause severe disease symptoms on the ginger plants. A range of temperature-dependent growth, disease severity and aggressiveness in colonization was found with a significant moderate positive correlation between growth and aggressiveness of colonization of the ginger sticks. This study identified P. myriotylum as the major oomycete pathogen in China from infected ginger rhizomes and suggests that P. myriotylum should be a key target to control soft rot of ginger disease.

Analysis of soft impingement in nonisothermal precipitation

2009 ◽  
Vol 24 (12) ◽  
pp. 3664-3673 ◽  
Author(s):  
Kai Fan ◽  
Feng Liu ◽  
Wei Yang ◽  
Gencang Yang ◽  
Yaohe Zhou
Keyword(s):  
Three Dimensional ◽  
Plain Carbon Steel ◽  
Model Parameters ◽  
Temperature Dependent ◽  
Analytical Treatment ◽  
Growth Coefficient ◽  
Soft Impingement ◽  
Compact Expression ◽  
Nonisothermal Heating ◽  
Dependent Growth

The effects of soft impingement on precipitation are considered. A physically realistic analytical treatment of soft impingement has been developed for solid-state precipitation in a nonisothermal heating/cooling process following the basic assumptions (i.e., a two-stage transformation including site saturation of nucleation, isotropic growth and linear approximation for a concentration gradient in front of the precipitate/matrix interface). Furthermore, both one- and three-dimensional precipitations have been described using a compact expression which is analogous to Zener’s model but with a temperature-dependent growth coefficient. A detailed description for the model parameters has been given for the model application. Good agreement with published experimental data, for example, the decomposition of austenite in a 0.038–0.30wt%Mn plain carbon steel, has been achieved.

Temperature-dependent growth of few layer β-InSe and α-In2Se3 single crystals for optoelectronic device

2018 ◽  
Vol 33 (12) ◽  
pp. 125002 ◽  
Author(s):  
Yunxia Hu ◽  
Wei Feng ◽  
Mingjin Dai ◽  
Huihui Yang ◽  
Xiaoshuang Chen ◽  
...  
Keyword(s):  
Single Crystals ◽  
Optoelectronic Device ◽  
Temperature Dependent ◽  
Dependent Growth

Large scale ZrS2 atomically thin layers

2016 ◽  
Vol 4 (15) ◽  
pp. 3143-3148 ◽  
Author(s):  
Xiaoting Wang ◽  
Le Huang ◽  
Xiang-Wei Jiang ◽  
Yan Li ◽  
Zhongming Wei ◽  
...  
Keyword(s):  
Growth Process ◽  
Large Scale ◽  
Scale Up ◽  
Thin Layers ◽  
Lateral Size ◽  
Temperature Dependent ◽  
Dependent Growth

Large scale (up to 30 μm in lateral size) atomically thin hexagonal ZrS2 nanoflakes were prepared on traditional substrates (silica, sapphire) through a temperature dependent growth process.

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