scholarly journals The Mechanism of Herbicide Resistance in Tobacco Cells with a New Mutation in the QB Protein

1989 ◽  
Vol 89 (3) ◽  
pp. 986-992 ◽  
Author(s):  
Yoshio Sigematsu ◽  
Fumihiko Sato ◽  
Yasuyuki Yamada
Keyword(s):  
Herbicide Resistance ◽  
New Mutation ◽  
Tobacco Cells

Coevolution of Two Sulfonylurea-Resistant Common Chickweed (Stellaria media) Biotypes with Different Mutations in the Acetolactate Synthase Gene

Weed Science ◽  
2018 ◽  
Vol 66 (4) ◽  
pp. 439-445
Author(s):  
Martin Laforest ◽  
Brahim Soufiane
Keyword(s):  
Herbicide Resistance ◽  
Acetolactate Synthase ◽  
Stellaria Media ◽  
New Mutation ◽  
Als Inhibitors ◽  
Tribenuron Methyl

AbstractCommon chickweed [Stellaria media(L.) Vill.] is an annual weed found in grain fields and pastures. This creeping weed produces a mat-like canopy that competes with crop seedlings for light and nutrients. This species is almost exclusively autogamous. Acetolactate synthase (ALS)-inhibiting herbicides are frequently used to control this broadleaf weed, and two mutations in theS. media ALSgene (Pro-197-Gln and Trp-574-Leu) have been reported to confer herbicide resistance. Seeds from several plants that survived an application of thifensulfuron-methyl/tribenuron-methyl (16 g ai ha−1) were collected from the same field in Québec, Canada. Seedlings were grown, tested for the presence of mutations in theALSgene, and treated with different rates of foramsulfuron, flumetsulam, and imazethapyr, each belonging to different families of ALS inhibitors. Two herbicide resistance–conferring mutations were identified in this population. One biotype had the previously reported Pro-197-Gln, while a new mutation, Pro-197-Ser, was identified in different plants from the same population. The new mutation (Pro-197-Ser) confers a lower level of resistance to sulfonylureas than Pro-197-Gln, and both biotypes are susceptible to imizadolinone and triazolopyrimidines.

Increased N-acylphosphatidylethanolamine biosynthesis in elicitor-treated tobacco cells

1995 ◽  
Vol 95 (1) ◽  
pp. 120-126 ◽  
Author(s):  
Kent D. Chapman ◽  
Allison Conyers-Jackson ◽  
Robert A. Moreau ◽  
Swati Tripathy
Keyword(s):  
Tobacco Cells

New mutation in TSC1-gene in a sporadic case with initially mild phenotype

2012 ◽  
Vol 43 (02) ◽  
Author(s):  
C Thiels ◽  
C Köhler ◽  
K Weigt-Usinger ◽  
C Sutter ◽  
T Lücke
Keyword(s):  
Sporadic Case ◽  
New Mutation ◽  
Mild Phenotype ◽  
Tsc1 Gene

A Case of Congenital Glucose Galactose Malabsorption with a New Mutation in the SLC5A1 Gene

2020 ◽  
Author(s):  
Hasan Akduman ◽  
Dilek Dilli ◽  
Serdar Ceylaner
Keyword(s):  
Mutation Analysis ◽  
Autosomal Recessive ◽  
Glucose Transporter ◽  
Neonatal Period ◽  
Autosomal Recessive Disorder ◽  
Homozygous Mutation ◽  
New Mutation ◽  
Early Neonatal Period ◽  
Sodium Dependent ◽  
Hypernatremic Dehydration

AbstractCongenital glucose-galactose malabsorption (CGGM) is an autosomal recessive disorder originating from an abnormal transporter mechanism in the intestines. It was sourced from a mutation in the SLC5A1 gene, which encodes a sodium-dependent glucose transporter. Here we report a 2-day-old girl with CGGM who presented with severe hypernatremic dehydration due to diarrhea beginning in the first hours of life. Mutation analysis revealed a novel homozygous mutation NM_000343.3 c.127G > A (p.Gly43Arg) in the SLC5A1 gene. Since CGGM can cause fatal diarrhea in the early neonatal period, timely diagnosis of the disease seems to be essential.

Syndrome carney-stratakis, new mutation report: SDH B: D138Y (c.412>T)

2018 ◽  
Author(s):  
Ana Ruiz Serrano ◽  
Alessandra Gabillo Ciccia ◽  
Francisca Martinez Maduena ◽  
Salome Martinez Gonzalez ◽  
Josep Oriola Ambros ◽  
...  
Keyword(s):  
New Mutation

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.

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