scholarly journals Development of cultural control for bacterial black node of wheat (Pseudomonas syringae pv. syringae)

2016 ◽  
Vol 58 (0) ◽  
pp. 103-106
Author(s):  
Shigeki Tabata ◽  
Tomohiro Yamakawa ◽  
Katsutoshi Kuroda ◽  
Tooru Kitagami
Keyword(s):  
Pseudomonas Syringae ◽  
Cultural Control ◽  
Black Node

PCR detection of Pseudomonas syringae pv. syringae, the causal agent of bacterial black node in barley and wheat, using newly designed primer sets

2020 ◽  
Vol 86 (5) ◽  
pp. 387-392
Author(s):  
Rikuto Yoshioka ◽  
Hiroshi Uematsu ◽  
Yuichi Takikawa ◽  
Hiroshi Kajihara ◽  
Yasuhiro Inoue
Keyword(s):  
Pseudomonas Syringae ◽  
Causal Agent ◽  
Pcr Detection ◽  
Primer Sets ◽  
Black Node

Effects of the pseudomonad phytotoxin coronatine on tomato leaf structure and ultrastructure

1995 ◽  
Vol 53 ◽  
pp. 862-863
Author(s):  
D.A. Palmer ◽  
C.L. Bender
Keyword(s):  
Pseudomonas Syringae ◽  
Membrane Integrity ◽  
Leaf Tissue ◽  
Cell Number ◽  
Cell Ultrastructure ◽  
Response To Treatment ◽  
Prominent Symptom ◽  
Chlorophylls A And B ◽  
Cell Dimensions ◽  
Structure And Ultrastructure

Coronatine is a non-host-specific phytotoxin produced by several members of the Pseudomonas syringae group of pathovars. The toxin acts as a virulence factor in P. syringae pv. tomato, allowing the organism to multiply to a higher population density and develop larger lesions than mutant strains unable to produce the toxin. The most prominent symptom observed in leaf tissue treated with coronatine is an intense spreading chlorosis; this has been attributed to a loss of chlorophylls a and b in tobacco. Coronatine's effects on membrane integrity and cell ultrastructure have not been previously investigated. The present study describes changes in tomato leaves in response to treatment with purified coronatine, infection by a coronatine-producing strain of P. syringae pv. tomato, and infection by a cor" mutant.In contrast to H2O-treated tissue, coronatine-treated tissue showed a diffuse chlorosis extending approximately 5 mm from the inoculation site. Leaf thickness, cell number, and cell dimensions were similar for both healthy and coronatine-treated, chlorotic tissue; however, the epidermal cell walls were consistently thicker in coronatine-treated leaves (Figs, la and lb).

New Technologies to Combat Herbicide Resistance

2020 ◽  
Vol 31 (2) ◽  
pp. 90-92
Author(s):  
Rob Edwards
Keyword(s):  
Winter Wheat ◽  
Herbicide Resistance ◽  
Cover Crops ◽  
New Technologies ◽  
Green Revolution ◽  
Arable Land ◽  
Limited Range ◽  
Cultural Control ◽  
Arable Farming ◽  
The Uk

Herbicide resistance in problem weeds is now a major threat to global food production, being particularly widespread in wild grasses affecting cereal crops. In the UK, black-grass (Alopecurus myosuroides) holds the title of number one agronomic problem in winter wheat, with the loss of production associated with herbicide resistance now estimated to cost the farming sector at least £0.5 billion p.a. Black-grass presents us with many of the characteristic traits of a problem weed; being highly competitive, genetically diverse and obligately out-crossing, with a growth habit that matches winter wheat. With the UK’s limited arable crop rotations and the reliance on the repeated use of a very limited range of selective herbicides we have been continuously performing a classic Darwinian selection for resistance traits in weeds that possess great genetic diversity and plasticity in their growth habits. The result has been inevitable; the steady rise of herbicide resistance across the UK, which now affects over 2.1 million hectares of some of our best arable land. Once the resistance genie is out of the bottle, it has proven difficult to prevent its establishment and spread. With the selective herbicide option being no longer effective, the options are to revert to cultural control; changing rotations and cover crops, manual rogueing of weeds, deep ploughing and chemical mulching with total herbicides such as glyphosate. While new precision weeding technologies are being developed, their cost and scalability in arable farming remains unproven. As an agricultural scientist who has spent a working lifetime researching selective weed control, we seem to be giving up on a technology that has been a foundation stone of the green revolution. For me it begs the question, are we really unable to use modern chemical and biological technology to counter resistance? I would argue the answer to that question is most patently no; solutions are around the corner if we choose to develop them.

Exemplar Abstract for Pseudomonas syringae van Hall 1902 (Approved Lists 1980).

2003 ◽  
Author(s):  
Charles Thomas Parker ◽  
Dorothea Taylor ◽  
George M Garrity
Keyword(s):  
Pseudomonas Syringae

Exemplar Abstract for Pseudomonas syringae van Hall 1902 (Approved Lists 1980).

2003 ◽  
Author(s):  
Charles Thomas Parker ◽  
Dorothea Taylor ◽  
George M Garrity
Keyword(s):  
Pseudomonas Syringae

Exemplar Abstract for Pseudomonas syringae van Hall 1902 (Approved Lists 1980).

2003 ◽  
Author(s):  
Charles Thomas Parker ◽  
Dorothea Taylor ◽  
George M Garrity
Keyword(s):  
Pseudomonas Syringae

Exemplar Abstract for Pseudomonas syringae syringae (van Hall 1902) Janse 1982.

2003 ◽  
Author(s):  
Charles Thomas Parker ◽  
Dorothea Taylor ◽  
George M Garrity
Keyword(s):  
Pseudomonas Syringae
Sign in / Sign up

Export Citation Format

Share Document