Growth-inhibiting effect of psoralen plus ultraviolet-A light therapy on K562 cells

Four soil fungi were isolated from the soil by serial dilution and were identified as Aspergillus flavus Link, A. fumigatus Fresenius, A. niger van Tieghem and Trichoderma viride Pers. The soil fungi were selected to evaluate their antagonistic potential against seed borne fungus Fusarium merismoides isolated from sesame. In dual culture colony interaction Trichoderma viride showed the highest (45.88%) growth inhibiting effect on F. merismoides followed by A. niger (40.00%), A. flavus (36.37) and A. fumigatus (30.77%). Volatile metabolites from T. viride showed the highest growth inhibiting effect on F. merismoides (67.69%) and non-volatile metabolites from T. viride showed the highest growth inhibiting effect on F. merismoides (75.00%). Journal of Bangladesh Academy of Sciences, Vol. 43, No. 1, 17-23, 2019

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Improved elongation of Scots pine seedlings under blue light depletion is not dependent on resource acquisition

Functional Plant Biology ◽

10.1071/fp09012 ◽

2009 ◽

Vol 36 (8) ◽

pp. 742 ◽

Cited By ~ 11

Author(s):

Marian Sarala ◽

Erja Taulavuori ◽

Jouni Karhu ◽

Eira-Maija Savonen ◽

Kari Laine ◽

...

Keyword(s):

Lipid Peroxidation ◽

Blue Light ◽

Scots Pine ◽

Shoot Elongation ◽

Resource Acquisition ◽

Pigment Composition ◽

Frost Hardening ◽

Inhibiting Effect ◽

Pine Seedlings ◽

Growth Inhibiting

Removal of blue light (400–500 nm) induced shoot elongation of 2-year-old Scots pine (Pinus sylvestris L.) seedlings, which was not related to resource acquisition (carbohydrates, C/N ratio and soluble proteins) and frost hardening. The seedlings were grown in northern Finland (64°N) in plexiglass chambers, either orange in colour or transparent, during elongation and cold hardening periods in 2001. The orange chamber removed the blue wavelengths. The results suggest that the growth inhibiting effect of blue light on Scots pine elongation is probably a photomorphogenic regulation response; the removal of blue light did not affect the gas exchange and accumulation of growth resources. In addition, the removal of blue light also did not affect the physiological parameters (pigment composition, chlorophyll fluorescence and lipid peroxidation) measured during the preparation for winter.

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A simple device for growing Clostridium perfringens and its application in bacteriocin studies

Canadian Journal of Microbiology ◽

10.1139/m82-107 ◽

1982 ◽

Vol 28 (6) ◽

pp. 709-713

Author(s):

D. E. Mahony

Keyword(s):

Cell Wall ◽

Clostridium Perfringens ◽

Radioactive Isotopes ◽

Simple Device ◽

Constant Flow ◽

Nitrogen Gas ◽

Growth Environment ◽

Inhibiting Effect ◽

Growth Inhibiting ◽

Common Laboratory

A simple device constructed of common laboratory material served as a minifermenter for the growth of Clostridium perfringens. A constant flow of nitrogen gas into a culture tube containing C. perfringens assured agitation of the culture and a mechanism for dispensing small volumes of liquid from the culture without disturbing the growth environment. The method was applied to examining the growth-inhibiting effect of bacteriocins of C. perfringens where a very economical use of radioactive isotopes was possible. The activity of some bacteriocins differed when compared with previous data obtained with stationary cultures. Two major categories of bacteriocin appear to exist for this species: those bacteriocins which block the incorporation of DNA, RNA, and protein precursors and those which interfere with the organism's cell wall.

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