E-ISSN 2090-0503 | ISSN 1687-7497
 

Original Research 


EFFECT OF ULTRAVIOLET RADIATION ON CONIDIAL GERMINATION AND GROWTH OF Fusarium oxysporum and Aspergillus nidulans

Metwally A. Metwally.

Abstract
We evaluated the effects of exposure to doses of near- irradiation (420-425 peak 366 nm) and far- (240-280 peak 254 nm) on the conidial germination, length of germ tubes and radial growth rate of Fusarium oxysporum and Aspergillus nidulans (anamorph of Emericella nidulans). Near- irradiation delay conidial germination and inhibitory effect was maximal after 240 min of irradiation. The length of developed germ tubes was reduced up to 98% and 70% in F. oxysporum and A. nidulans respectively. Far- irradiation was more effective than near- and drastically reduces the conidial germination. Irradiation for 25 min completely inhibited conidial germination in F. oxysporum while 35 min exposure caused complete inhibition in A. nidulans. The development of germ tubes was significantly inhibited and very slow after far- irradiation compared with that of near- irradiation. Radial growth was also retarded by near- irradiation especially when subjected for long periods. Far- irradiation was more effective than near- and the inhibitory effect was markedly observed during the 72 hr followed irradiation. F. oxysporum appeared to be more sensitive to - irradiation than A. nidulans.

Key words: F. oxysporum, A. nidulans, -irradiation, photocontrol, conidial germination, growth rate.


 
ARTICLE TOOLS
Abstract
PDF Fulltext
How to cite this articleHow to cite this article
Citation Tools
Related Records
 Articles by Metwally A. Metwally
on Google
on Google Scholar

How to Cite this Article
Pubmed Style

Metwally A. Metwally. EFFECT OF ULTRAVIOLET RADIATION ON CONIDIAL GERMINATION AND GROWTH OF Fusarium oxysporum and Aspergillus nidulans. Egypt. J. Exp. Biol. (Bot.). 2008; 4(0): 23-29.


Web Style

Metwally A. Metwally. EFFECT OF ULTRAVIOLET RADIATION ON CONIDIAL GERMINATION AND GROWTH OF Fusarium oxysporum and Aspergillus nidulans. https://www.egyseb.net//?mno=186750 [Access: December 15, 2023].


AMA (American Medical Association) Style

Metwally A. Metwally. EFFECT OF ULTRAVIOLET RADIATION ON CONIDIAL GERMINATION AND GROWTH OF Fusarium oxysporum and Aspergillus nidulans. Egypt. J. Exp. Biol. (Bot.). 2008; 4(0): 23-29.



Vancouver/ICMJE Style

Metwally A. Metwally. EFFECT OF ULTRAVIOLET RADIATION ON CONIDIAL GERMINATION AND GROWTH OF Fusarium oxysporum and Aspergillus nidulans. Egypt. J. Exp. Biol. (Bot.). (2008), [cited December 15, 2023]; 4(0): 23-29.



Harvard Style

Metwally A. Metwally (2008) EFFECT OF ULTRAVIOLET RADIATION ON CONIDIAL GERMINATION AND GROWTH OF Fusarium oxysporum and Aspergillus nidulans. Egypt. J. Exp. Biol. (Bot.), 4 (0), 23-29.



Turabian Style

Metwally A. Metwally. 2008. EFFECT OF ULTRAVIOLET RADIATION ON CONIDIAL GERMINATION AND GROWTH OF Fusarium oxysporum and Aspergillus nidulans. THE EGYPTIAN JOURNAL OF EXPERIMENTAL BIOLOGY (Botany), 4 (0), 23-29.



Chicago Style

Metwally A. Metwally. "EFFECT OF ULTRAVIOLET RADIATION ON CONIDIAL GERMINATION AND GROWTH OF Fusarium oxysporum and Aspergillus nidulans." THE EGYPTIAN JOURNAL OF EXPERIMENTAL BIOLOGY (Botany) 4 (2008), 23-29.



MLA (The Modern Language Association) Style

Metwally A. Metwally. "EFFECT OF ULTRAVIOLET RADIATION ON CONIDIAL GERMINATION AND GROWTH OF Fusarium oxysporum and Aspergillus nidulans." THE EGYPTIAN JOURNAL OF EXPERIMENTAL BIOLOGY (Botany) 4.0 (2008), 23-29. Print.



APA (American Psychological Association) Style

Metwally A. Metwally (2008) EFFECT OF ULTRAVIOLET RADIATION ON CONIDIAL GERMINATION AND GROWTH OF Fusarium oxysporum and Aspergillus nidulans. THE EGYPTIAN JOURNAL OF EXPERIMENTAL BIOLOGY (Botany), 4 (0), 23-29.