Effect of Primula root and other plant extracts on infection structure formation of Phyllosticta ampelicida (asexual stage of Guignardia bidwellii) and on black rot disease of grapevine in the greenhouse

2013 ◽  
Vol 120 (1) ◽  
pp. 26-33 ◽  
Author(s):  
Eckhard Koch ◽  
Melanie Enders ◽  
Cornelia Ullrich ◽  
Daniel Molitor ◽  
Beate Berkelmann-Löhnertz
Keyword(s):  
Structure Formation ◽  
Plant Extracts ◽  
Black Rot ◽  
Asexual Stage ◽  
Infection Structure ◽  
Guignardia Bidwellii ◽  
Phyllosticta Ampelicida ◽  
Rot Disease

scholarly journals Genetic Variability of Phyllosticta ampelicida, the Agent of Black Rot Disease of Grapevine

2017 ◽  
Vol 107 (11) ◽  
pp. 1406-1416 ◽  
Author(s):  
Pietro A. Rinaldi ◽  
Donatella Paffetti ◽  
Cecilia Comparini ◽  
Giovanni A. L. Broggini ◽  
Cesare Gessler ◽  
...  
Keyword(s):  
Genetic Variability ◽  
Black Rot ◽  
Its2 Region ◽  
Fungal Populations ◽  
Phyllosticta Ampelicida ◽  
The Difference ◽  
Rot Disease ◽  
Pathogen Populations ◽  
High Degree ◽  
Vitis Spp

Phyllosticta ampelicida causes black rot disease of Vitis spp. Genetic homogeneity of pathogen populations was investigated by analyzing the number of haplotypes present in infected samples from Europe and America. The fungus was identified from an analysis of the internal transcribed spacer (ITS)1-ITS2 region, and partial sequences of β-tubulin and calmodulin genes. The analysis of nuclear microsatellites applied to strains from Vitis spp. confirmed the existence of a high degree of genetic variability in the fungal populations, revealed four subpopulations, and showed that strains from America are distinct from the European ones. Furthermore, the results obtained by landscape genetics showed that there were different introductions of the pathogen in the main vine areas of Europe, confirming what was observed in the first reports of the disease. The genetic variability of the fungus revealed by this study confirms the ability to generate new haplotypes by sexual reproduction. The difference found between the European populations and the American one confirms that the pathogen originated from America.

Effect of Ozone onAspergillus nigerCausing Black Rot Disease in Onion

2006 ◽  
Vol 28 (5) ◽  
pp. 347-350 ◽  
Author(s):  
V. R. Vijayanandraj ◽  
D. Nagendra Prasad ◽  
N. Mohan ◽  
M. Gunasekaran
Keyword(s):  
Black Rot ◽  
Rot Disease

scholarly journals Application of Bacillus pumilus isolates for management of black rot disease in strawberry

2021 ◽  
Vol 31 (1) ◽  
Author(s):  
Farid Abd-El-Kareem ◽  
Ibrahim E. Elshahawy ◽  
Mahfouz M. M. Abd-Elgawad
Keyword(s):  
Root Rot ◽  
Bacillus Pumilus ◽  
Field Conditions ◽  
Black Rot ◽  
Bacterial Isolates ◽  
Black Root Rot ◽  
Root Rot Disease ◽  
Growth Area ◽  
Rot Disease ◽  
The Impact

Abstract Background Black root rot of strawberry plants caused by Rhizoctonia solani, Fusarium solani, and Pythium sp. is a serious disease in Egypt. Biocontrol agents have frequently proved to possess paramount and safe tools against many diseases. The impact of soil treatments with 3 Bacillus pumilus isolates on black root rot disease of strawberry plants caused by R. solani, F., and Pythium sp. under laboratory and field conditions was examined herein on the commonly used ‘Festival’ strawberry cultivar. To increase the bacterial adhesion and distribution on the roots, each seedling was dipped in bacterial cell suspension at 1 × 108 colony-forming units/ml of each separate bacterial isolate for 30 min then mixed with 5% Arabic gum. Results The tested B. pumilus isolates significantly reduced the growth area of these 3 fungi. The two bacterial isolates Nos. 2 and 3 reduced the growth area by more than 85.2, 83.6, and 89.0% for R. solani, F. solani, and Pythium sp., respectively. Likewise, the 3 bacterial isolates significantly (P ≤ 0.05) inhibited the disease under field conditions. Isolates Nos. 2 and 3 suppressed the disease incidence by 64.4 and 68.9% and disease severity by 65.3 and 67.3%, respectively. The fungicide Actamyl had effect similar to that of the 2 isolates. B. pumilus isolates significantly enhanced growth parameters and yields of strawberry plants; isolates Nos. 2 and 3 raised the yield by 66.7 and 73.3%, respectively. Conclusions Bacillus pumilus isolates could effectively manage the black rot disease in strawberry herein. Due to the significant impact of the root rot disease on strawberry yield, B. pumilus should be further tested to manage the disease on strawberry on large scale in Egypt.

scholarly journals Botanicals to Control Soft Rot Bacteria of Potato

2012 ◽  
Vol 2012 ◽  
pp. 1-6 ◽  
Author(s):  
M. M. Rahman ◽  
A. A. Khan ◽  
M. E. Ali ◽  
I. H. Mian ◽  
A. M. Akanda ◽  
...  
Keyword(s):  
Plant Extracts ◽  
Curcuma Longa ◽  
Soft Rot ◽  
Storage Condition ◽  
Storage Conditions ◽  
Leaf Extracts ◽  
Corchorus Capsularis ◽  
Rot Disease ◽  
And Storage

Extracts from eleven different plant species such as jute (Corchorus capsularisL.), cheerota (Swertia chiraitaHam.), chatim (Alstonia scholarisL.), mander (Erythrina variegata), bael (Aegle marmelosL.), marigold (Tagetes erecta), onion (Allium cepa), garlic (Allium sativumL.), neem (Azadiracta indica), lime (Citrus aurantifolia), and turmeric (Curcuma longaL.) were tested for antibacterial activity against potato soft rot bacteria,E. carotovorasubsp.carotovora (Ecc)P-138, underin vitroand storage conditions. Previously,EccP-138 was identified as the most aggressive soft rot bacterium in Bangladeshi potatoes. Of the 11 different plant extracts, only extracts from dried jute leaves and cheerota significantly inhibited growth ofEccP-138in vitro. Finally, both plant extracts were tested to control the soft rot disease of potato tuber under storage conditions. In a 22-week storage condition, the treated potatoes were significantly more protected against the soft rot infection than those of untreated samples in terms of infection rate and weight loss. The jute leaf extracts showed more pronounced inhibitory effects onEcc-138 growth both inin vitroand storage experiments.

Potential of plant extracts in combination with bacterial antagonist treatment as biocontrol agent of red rot of sugarcane

2007 ◽  
Vol 53 (2) ◽  
pp. 196-206 ◽  
Author(s):  
V. Jayakumar ◽  
R. Bhaskaran ◽  
S. Tsushima
Keyword(s):  
Plant Extracts ◽  
Field Experiments ◽  
Curcuma Longa ◽  
Saccharum Officinarum ◽  
Red Rot ◽  
Colletotrichum Falcatum ◽  
Similar Response ◽  
Red Rot Disease ◽  
Leaf Extracts ◽  
Rot Disease

Plant extracts and antifungal microorganisms were tested singly and in combination for biocontrol of sugarcane red rot disease ( Colletotrichum falcatum ) using two sugarcane ( Saccharum officinarum L.) cultivars, CoC671 and CoC92061, in pot and field experiments. Leaf extracts of Abrus precatorius and Bassia latifolia and the rhizome extract of Curcuma longa reduced Colletotrichum falcatum mycelial growth by 80%, 58%, and 57%, respectively. Although sugarcane- planting materials (setts) treated individually with either Pseudomonas fluorescens Md1 or A. precatorius in pot experiments had the lowest incidences of red rot, 20.1% and 24.2%, respectively, none of the plant extracts were effective in the field. In contrast, when the two varieties were tested separately in two field locations, the setts treated with A. precatorius in combination with a spray or soil application of P. fluorescens Md1 had the lowest incidence of red rot in both locations, e.g., 3.1% and 3.4% incidence for CoC92061 in one location, and had a similar response to the chemical control. The results suggest the applicability of plant-based extracts for the suppression of sugarcane red rot disease in the field as an environment-friendly tool in combination with antagonists.

Signaling for Infection Structure Formation in Fungi

1991 ◽  
pp. 25-46 ◽  
Author(s):  
H. C. Hoch ◽  
R. C. Staples
Keyword(s):  
Structure Formation ◽  
Infection Structure

scholarly journals Glucosinolate Profile and Glucosinolate Biosynthesis and Breakdown Gene Expression Manifested by Black Rot Disease Infection in Cabbage

Plants ◽  
2020 ◽  
Vol 9 (9) ◽  
pp. 1121
Author(s):  
Mehede Hassan Rubel ◽  
Md. Abuyusuf ◽  
Ujjal Kumar Nath ◽  
Arif Hasan Khan Robin ◽  
Hee Jeong Jung ◽  
...  
Keyword(s):  
Gene Expression ◽  
Xanthomonas Campestris ◽  
Defense Mechanism ◽  
Expression Patterns ◽  
Functional Characterization ◽  
Brassica Species ◽  
Black Rot ◽  
Clear Understanding ◽  
Knock Out ◽  
Rot Disease

Cabbage (Brassica oleracea var. capitata) is an economically important crop in the family Brassicaceae. Black rot disease is a top ranked cabbage disease, which is caused by Xanthomonas campestris pv. campestris (Xcc) and may reduce 50% crop loss. Therefore, we need a clear understanding of black rot disease resistance for sustainable disease management. The secondary metabolites, like Glucosinolate (GSL) presents in Brassica species, which plays a potential role in the defense mechanism against pathogens. However, there is little known about GSL-regulated resistance mechanisms and GSL biosynthesis and the breakdown related gene expression after black rot disease infection in cabbage. In this study, relative expression of 43 biosynthetic and breakdown related GSLs were estimated in the black rot resistant and susceptible cabbage lines after Xcc inoculation. Ten different types of GSL from both aliphatic and indolic groups were identified in the contrasting cabbage lines by HPLC analysis, which included six aliphatic and four indolic compounds. In the resistant line, nine genes (MYB122-Bol026204, MYB34-Bol017062, AOP2-Bo9g006240, ST5c-Bol030757, CYP81F1-Bol017376, CYP81F2-Bol012237, CYP81F4-Bol032712, CYP81F4-Bol032714 and PEN2-Bol030092) showed consistent expression patterns. Pearson’s correlation coefficient showed positive and significant association between aliphatic GSL compounds and expression values of ST5c-Bol030757 and AOP2-Bo9g006240 genes as well as between indolic GSL compounds and the expression of MYB34-Bol017062, MYB122-Bol026204, CYP81F2-Bol012237, CYP81F4-Bol032712 and CYP81F4-Bol032714 genes. This study helps in understanding the role of GSL biosynthesis and breakdown related genes for resistance against black rot pathogen in cabbage, which could be further confirmed through functional characterization either by overexpression or knock-out mutation.

Chemical Studies on the Black Rot Disease of Sweet Potato.I

1952 ◽  
Vol 73 (12) ◽  
pp. 897-899
Author(s):  
Takashi Kubota ◽  
Hachiro Yamaguchi ◽  
Keizo Naya ◽  
Teruo Matsuura
Keyword(s):  
Black Rot ◽  
Chemical Studies ◽  
Rot Disease
Sign in / Sign up

Export Citation Format

Share Document