Asparagine and regulation of photoinduced rhythm in Penicillium claviforme

1989 ◽  
Vol 76 (3) ◽  
pp. 315-318
Author(s):  
B. Piskorz-Binczycka ◽  
S. Jerebzoff ◽  
S. Jerebzoff-Quintin
Keyword(s):  
Penicillium Claviforme

The effect of acceptor modification upon the synthesis of dinucleoside phosphates catalyzed by non-specific ribonucleases of Penicillium claviforme

1979 ◽  
Vol 44 (2) ◽  
pp. 613-625 ◽  
Author(s):  
Valentina I. Gulyaeva ◽  
Antonín Holý
Keyword(s):  
Reaction Center ◽  
Hydroxy Group ◽  
Pyrimidine Ring ◽  
Phosphate Group ◽  
Mutual Orientation ◽  
Acceptor Molecule ◽  
Heterocyclic Base ◽  
Sugar Moiety ◽  
Cyclic Phosphate ◽  
Penicillium Claviforme

The present paper studies the effect of the modification of heterocyclic base, sugar moiety and the presence of phosphate group on the nucleoside acceptors in the synthesis of dinucleoside phosphates from adenosine 2',3'-cyclic phosphate as donor, catalyzed by nonspecific acidic extracellular and intracellular ribonucleases from Penicillium claviforme. The enzyme binds specifically the acceptor molecule, preferring cytosine nucleosides. It requires the presence of the whole sugar moiety, an exact mutual orientation of the heterocyclic base and the reaction center (5'-hydroxy group), and a suitable conformation of the acceptor molecule. The enzyme-acceptor bond is homochiral and the presence of the N3-H group in the pyrimidine ring is important. The reaction between the donor and the acceptor is bimolecular and is competitively inhibited by some purine nucleosides.

scholarly journals Postharvest jasmonic acid treatment of sugarbeet roots reduces rot due to Botrytis cinerea, Penicillium claviforme, and Phoma betae

2012 ◽  
Vol 65 ◽  
pp. 1-4 ◽  
Author(s):  
Karen Klotz Fugate ◽  
Jocleita Peruzzo Ferrareze ◽  
Melvin D. Bolton ◽  
Edward L. Deckard ◽  
Larry G. Campbell
Keyword(s):  
Jasmonic Acid ◽  
Botrytis Cinerea ◽  
Acid Treatment ◽  
Penicillium Claviforme ◽  
Phoma Betae

Manganese-mediated morphogenesis in Penicillium claviforme and Penicillium clavigerum

1977 ◽  
Vol 23 (2) ◽  
pp. 209-212 ◽  
Author(s):  
Wayne H. Tinnell ◽  
Betty L. Jefferson ◽  
Robert E. Benoit
Keyword(s):  
Neutron Activation Analysis ◽  
Activation Analysis ◽  
Neutron Activation ◽  
Defined Medium ◽  
Chelating Resin ◽  
Colonial Morphology ◽  
Penicillium Claviforme

The colonial morphology and growth of Penicillium claviforme and P. clavigerum in manganese-deficient, defined medium, were examined with and without manganese supplementation. In unsupplemented medium rendered free of manganese through treatment with a chelating resin, P. claviforme grew but did not produce coremia. Similar results were obtained for P. clavigerum on media devoid of added manganese. However, when these media were supplemented with optimal concentrations of manganese both fungi produced coremia. The presence of manganese in various colony sections of P. claviforme was determined using neutron activation analysis. Maximal accumulation occurred in the conidia.

scholarly journals Seleção de antagonistas fúngicos a Fusarium solani e Fusarium oxysporum em substrato comercial para mudas

2007 ◽  
Vol 37 (6) ◽  
pp. 1801-1804 ◽  
Author(s):  
Luciana Zago Ethur ◽  
Elena Blume ◽  
Marlove Fátima Brião Muniz ◽  
Maria Georgina Veiga Flores
Keyword(s):  
Fusarium Oxysporum ◽  
Fusarium Solani ◽  
Penicillium Claviforme

Testes in vitro são geralmente utilizados para a seleção inicial de agentes de biocontrole contra fungos de solo, faltando metodologias que utilizem solo e/ou substrato. O objetivo deste trabalho foi realizar a seleção massal de isolados fúngicos antagônicos a F. solani e F. oxysporum em substrato comercial para mudas. Foram realizados dois experimentos com os patógenos F. solani e F. oxysporum e com 98 possíveis antagonistas fúngicos, dos gêneros Penicillium claviforme, Penicillium, Aspergillus e Cladosporium. A suspensão dos patógenos foi inserida no substrato, em copos plásticos, sendo acrescentada, cinco dias depois, a suspensão dos demais fungos. Avaliou-se o número de unidades formadoras de colônia de F. solani e F. oxysporum por grama de substrato após nove dias. Dos 98 isolados utilizados contra F. solani, 43 % não diferiram da testemunha e 57% reduziram o seu desenvolvimento em substrato, sendo que os três melhores isolados fúngicos foram do gênero Penicillium claviforme. Os três isolados de Penicillium claviforme selecionados para F. solani também foram eficientes para F. oxysporum.

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