Nitrogen utilisation-efficient oilseed rape (Brassica napus) genotypes exhibit stronger growth attributes from flowering stage onwards

2021 ◽  
Author(s):  
Xiao Guo ◽  
Bao-Luo Ma ◽  
Neil B. McLaughlin ◽  
Xiaoming Wu ◽  
Biyun Chen ◽  
...  
Keyword(s):  
Brassica Napus ◽  
Oilseed Rape ◽  
Flowering Stage ◽  
Nitrogen Utilisation ◽  
Growth Attributes

scholarly journals Dark leaf and pod spot (Alternaria brassicae) on oilseeds (Brassica napus) in Lithuania

2017 ◽  
Vol 38 (SI 2 - 6th Conf EFPP 2002) ◽  
pp. 384-387
Author(s):  
I. Brazauskiene ◽  
E. Petraitiene
Keyword(s):  
Brassica Napus ◽  
Oilseed Rape ◽  
Meteorological Conditions ◽  
Alternaria Brassicae ◽  
Flowering Stage ◽  
Winter Oilseed Rape ◽  
Brassica Napus L ◽  
Alternaria Blight ◽  
Severity Of The Disease ◽  
Precipitation And Temperature

Dark leaf and pod spot caused by Alternaria brassicae (Berk.) Sacc. is a serious problem both in winter and spring oilseed rape (Brassica napus L.) in Lithuania. According to ten years’ data, the spread of this disease on winter oilseed rape siliques was 31.2–100%, and the severity 3.4–25.0%. The cultivars Ceres, Accord and Kasimir were used in the trials. Through the years 1997–2001 the incidence of Alternaria blight on spring oilseed rape (cv. Star and Maskot) was 94.5–100% and the severity 1.5–20.5%. Every year the severity of the disease was highly influenced by the meteorological conditions – precipitation and temperature. Fungicides, used at the end of flowering stage (DC 69) or when the first spots of the disease appeared on pods, were effective against dark pod spot.

scholarly journals Genome Mining and Evaluation of the Biocontrol Potential of Pseudomonas fluorescens BRZ63, a New Endophyte of Oilseed Rape (Brassica napus L.) against Fungal Pathogens

2020 ◽  
Vol 21 (22) ◽  
pp. 8740
Author(s):  
Daria Chlebek ◽  
Artur Pinski ◽  
Joanna Żur ◽  
Justyna Michalska ◽  
Katarzyna Hupert-Kocurek
Keyword(s):  
Brassica Napus ◽  
Plant Growth ◽  
Pseudomonas Fluorescens ◽  
Oilseed Rape ◽  
Plant Growth Promotion ◽  
Fungal Pathogens ◽  
Growth Promotion ◽  
Genome Mining ◽  
Plant Colonization ◽  
Brassica Napus L

Endophytic bacteria hold tremendous potential for use as biocontrol agents. Our study aimed to investigate the biocontrol activity of Pseudomonas fluorescens BRZ63, a new endophyte of oilseed rape (Brassica napus L.) against Rhizoctonia solani W70, Colletotrichum dematium K, Sclerotinia sclerotiorum K2291, and Fusarium avenaceum. In addition, features crucial for biocontrol, plant growth promotion, and colonization were assessed and linked with the genome sequences. The in vitro tests showed that BRZ63 significantly inhibited the mycelium growth of all tested pathogens and stimulated germination and growth of oilseed rape seedlings treated with fungal pathogens. The BRZ63 strain can benefit plants by producing biosurfactants, siderophores, indole-3-acetic acid (IAA), 1-aminocyclopropane-1-carboxylate (ACC) deaminase, and ammonia as well as phosphate solubilization. The abilities of exopolysaccharide production, autoaggregation, and biofilm formation additionally underline its potential to plant colonization and hence biocontrol. The effective colonization properties of the BRZ63 strain were confirmed by microscopy observations of EGFP-expressing cells colonizing the root surface and epidermal cells of Arabidopsis thaliana Col-0. Genome mining identified many genes related to the biocontrol process, such as transporters, siderophores, and other secondary metabolites. All analyses revealed that the BRZ63 strain is an excellent endophytic candidate for biocontrol of various plant pathogens and plant growth promotion.

Amino acid contents and transport in oilseed rape (Brassica napus L.) under different nitrogen conditions

Planta ◽  
2004 ◽  
Vol 221 (3) ◽  
pp. 328-338 ◽  
Author(s):  
Jens Tilsner ◽  
Nina Kassner ◽  
Christine Struck ◽  
Gertrud Lohaus
Keyword(s):  
Amino Acid ◽  
Brassica Napus ◽  
Oilseed Rape ◽  
Brassica Napus L ◽  
Amino Acid Contents ◽  
Nitrogen Conditions

Effects of abscisic acid and temperature on erucic acid accumulation in oilseed rape (Brassica napus L.)

1997 ◽  
Vol 150 (4) ◽  
pp. 414-419 ◽  
Author(s):  
Jeroen A. Wilmer ◽  
Johannes P.F.G. Helsper ◽  
Linus H.W. van der Plas
Keyword(s):  
Abscisic Acid ◽  
Brassica Napus ◽  
Erucic Acid ◽  
Oilseed Rape ◽  
Brassica Napus L ◽  
Acid Accumulation

PrBn, a Major Gene Controlling Homeologous Pairing in Oilseed Rape (Brassica napus) Haploids

Genetics ◽  
2003 ◽  
Vol 164 (2) ◽  
pp. 645-653 ◽  
Author(s):  
Eric Jenczewski ◽  
Frédérique Eber ◽  
Agnès Grimaud ◽  
Sylvie Huet ◽  
Marie Odile Lucas ◽  
...  
Keyword(s):  
Brassica Napus ◽  
Oilseed Rape ◽  
Chromosome Pairing ◽  
Major Gene ◽  
Major Effect ◽  
F1 Hybrids ◽  
Precise Control ◽  
Ph1 Locus ◽  
Likelihood Approach ◽  
Likelihood Ratio Statistics

Abstract Precise control of chromosome pairing is vital for conferring meiotic, and hence reproductive, stability in sexually reproducing polyploids. Apart from the Ph1 locus of wheat that suppresses homeologous pairing, little is known about the activity of genes that contribute to the cytological diploidization of allopolyploids. In oilseed rape (Brassica napus) haploids, the amount of chromosome pairing at metaphase I (MI) of meiosis varies depending on the varieties the haploids originate from. In this study, we combined a segregation analysis with a maximum-likelihood approach to demonstrate that this variation is genetically based and controlled mainly by a gene with a major effect. A total of 244 haploids were produced from F1 hybrids between a high- and a low-pairing variety (at the haploid stage) and their meiotic behavior at MI was characterized. Likelihood-ratio statistics were used to demonstrate that the distribution of the number of univalents among these haploids was consistent with the segregation of a diallelic major gene, presumably in a background of polygenic variation. Our observations suggest that this gene, named PrBn, is different from Ph1 and could thus provide complementary information on the meiotic stabilization of chromosome pairing in allopolyploid species.

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