scholarly journals Effect of preventive and simultaneous inoculations of Bacillus amyloliquefaciens (Fukumoto) strains on conidial germination of Botrytis cinerea Pers.:Fr.

2018 ◽  
pp. 65-72 ◽  
Author(s):  
Ahlem Hamdache ◽  
Mohammed Ezziyyani ◽  
Ahmed Lamarti

Botrytis cinerea es un patógeno fúngico necrotrófico de varias plantas distribuido en todo el mundo. En el presente estudio se analizó el efecto de nueve aislados bacterianos sobre la germinación de conidios de B. cinerea. Los aislados se identificaron como Bacillus amyloliquefaciens. Para evaluar la eficacia de los aislados, se realizaron confrontaciones duales tanto preventivas como simultáneas con los conidios de B. cinerea. Los resultados mostraron que cinco aislados fueron más eficaces cuando se co-inocularon simultáneamente con el patógeno. Cuatro aislados fueron más eficaces cuando se inocularon previamente cuatro horas antes el patógeno. La cepa denominada B24, mostró una inhibición de (84.04%) en concentraciones muy bajas (3x103 UFC/ml) y la cepa RA9 fue la cepa menos eficaz. Botrytis cinerea is a necrotrophic fungal plant pathogen distributed worldwide. In the current study, the effect of nine bacterial isolates, on germination of B. cinerea conidia were studied. The nine isolates were identified as Bacillus amyloliquefaciens. The efficacy of isolates was tested, at different concentrations, in preventive and simultaneous inoculations with B. cinerea conidia. Results showed that five Bacillus isolates were more effective when co-inoculated simultaneously with the pathogen. Four isolates showed more efficacies when inoculated previously four hours before the pathogen. The isolate denominated B24 was the only that showed an important percent inhibition (84.04 %) at the lower concentration tested (3x103 CFU/ml) and the isolate RA9 was the less effective strain.

Genetics ◽  
1982 ◽  
Vol 102 (1) ◽  
pp. 19-24
Author(s):  
Sophia Kathariou ◽  
Philip T Spieth

ABSTRACT A Spore killer trait, which exhibits genetic and cytological properties analogous to those previously found in Neurospora, exists in natural populations of the fungal plant pathogen Fusarium moniliforme. The genogeography of the polymorphism in F. moniliforme differs from the situation in Neurospora intermedia. It is more akin to the situation in N. sitophila, although more extreme with respect to the prevalence of killer alleles: more than 80% of tested isolates of F. moniliforme carry the killer allele. Nevertheless, sensitive alleles are widely distributed and have been found in California, Italy, Greece and Central America.


2021 ◽  
Author(s):  
Stefan Kusch ◽  
Justine Larrouy ◽  
Heba M. M. Ibrahim ◽  
Shantala Mounichetty ◽  
Noémie Gasset ◽  
...  

2017 ◽  
Vol 17 (1) ◽  
Author(s):  
Kaile Sun ◽  
Ageeth van Tuinen ◽  
Jan A. L. van Kan ◽  
Anne-Marie A. Wolters ◽  
Evert Jacobsen ◽  
...  

2011 ◽  
Vol 115 (7) ◽  
pp. 649-659 ◽  
Author(s):  
Renaud Travadon ◽  
Ivan Sache ◽  
Cyril Dutech ◽  
Anna Stachowiak ◽  
Bruno Marquer ◽  
...  

Toxins ◽  
2018 ◽  
Vol 10 (5) ◽  
pp. 211 ◽  
Author(s):  
Katarzyna Bilska ◽  
Tomasz Kulik ◽  
Anna Ostrowska-Kołodziejczak ◽  
Maciej Buśko ◽  
Matias Pasquali ◽  
...  

2021 ◽  
Author(s):  
Imroatun Nafi'ah ◽  
Sitoresmi Prabaningtyas ◽  
Agung Witjoro ◽  
Yanis Kurnia Basitoh ◽  
Achmad Rodiansyah ◽  
...  

Abstract The consortium of various types of bacteria from lakes in East Java has the potency to stimulate microalgae Chlorella vulgaris growth. Increased microalgae density from co-culture has an excellent potency for sources of biomass that can be developed for renewable energy. Several stages conducted of this research started from an exploration of IAA producing bacteria and amylolytic bacteria from several East Java Lakes; then, the highest bacterial isolates were identified with morphological and genotypical characteristics. The well-characterized bacterial isolates were used for the microbial consortium in co-culture with C. vulgaris. The treatment used in this study as follows: I) C. vulgaris without bacteria culture as a control, II) amylolytic bacteria + C. vulgaris, III) IAA-producing bacteria + C. vulgaris, IV) potential amylolytic bacteria and IAA-producing bacteria + C. vulgaris. The exploration result of potential bacteria from Ranu Pani, Ranu Regulo, Telaga Ngebel, and Ranu Grati lakes was found 53 amylolytic bacterial isolates, and 90 isolates IAA-producing bacteria. The highest amylolytic bacteria (isolate L) is related to Bacillus amyloliquefaciens, while the most elevated IAA-producing bacteria (isolate C) is related to Bacillus paramycoides. The highest cell density was produced in treatment III, reaching 2.7 x 106 cells/mL on day 50th. The treatments with supplement bacteria showed a significant effect for accelerating the growth of microalgae compared to control.


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