scholarly journals A transcriptome analysis reveals a role for the indole GLS-linked auxin biosynthesis in secondary dormancy in rapeseed (Brassica napus L.)

2019 ◽  
Vol 19 (1) ◽  
Author(s):  
Lei Liu ◽  
Fuxia Liu ◽  
Jinfang Chu ◽  
Xin Yi ◽  
Wenqi Fan ◽  
...  
Keyword(s):  
Brassica Napus ◽  
Transcriptome Analysis ◽  
Auxin Biosynthesis ◽  
Brassica Napus L ◽  
Secondary Dormancy

Comparative genome and transcriptome analysis unravels key factors of nitrogen use efficiency in Brassica napus L

2019 ◽  
Vol 43 (3) ◽  
pp. 712-731 ◽  
Author(s):  
Quan Li ◽  
Guangda Ding ◽  
Ningmei Yang ◽  
Philip John White ◽  
Xiangsheng Ye ◽  
...  
Keyword(s):  
Brassica Napus ◽  
Nitrogen Use Efficiency ◽  
Transcriptome Analysis ◽  
Key Factors ◽  
Brassica Napus L ◽  
Nitrogen Use ◽  
Comparative Genome ◽  
Use Efficiency

scholarly journals Fine-mapping and transcriptome analysis of a candidate gene controlling plant height in Brassica napus L.

2020 ◽  
Vol 13 (1) ◽  
Author(s):  
Xiaodong Wang ◽  
Ming Zheng ◽  
Hongfang Liu ◽  
Liang Zhang ◽  
Feng Chen ◽  
...  
Keyword(s):  
Brassica Napus ◽  
Candidate Gene ◽  
Plant Height ◽  
Fine Mapping ◽  
Transcriptome Analysis ◽  
Brassica Napus L

Classification of canola (Brassica napus) winter cultivars by secondary dormancy

2009 ◽  
Vol 89 (4) ◽  
pp. 613-619 ◽  
Author(s):  
S Gruber ◽  
K Emrich ◽  
W Claupein
Keyword(s):  
Cluster Analysis ◽  
Brassica Napus ◽  
Environmental Factors ◽  
Seed Bank ◽  
Soil Seed Bank ◽  
Canola Seed ◽  
Brassica Napus L ◽  
Secondary Dormancy ◽  
Specific Trait

Secondary dormancy is the major reason for seed persistence of canola (Brassica napus L.) in the soil. Volunteers emerging from the soil seed bank can lead to unwanted gene dispersal. More than 40 B. napus canola cultivars were tested for secondary dormancy under laboratory conditions. All cultivars were classified into groups of low, medium, and high dormancy by performing a cluster analysis. The results suggest that secondary dormancy is a cultivar-specific trait. Additionally, inter-year variation in dormancy indicates that it seems to be influenced by a set of environmental factors. Among years, classification of cultivars based on relative rank was more robust than classification based on absolute dormancy values. The classification of cultivars by their dormancy level would allow farmers to select and grow low-dormancy cultivars. Knowledge about the relative secondary dormancy of the currently grown cultivars could help growers and breeders lower canola seed bank persistence. Key words: Brassica napus, cluster analysis, genotype, secondary dormancy, soil seed bank

Water stress, temperature regimes and light control induction, and loss of secondary dormancy in Brassica napus L. seeds

2017 ◽  
Vol 27 (3) ◽  
pp. 217-230 ◽  
Author(s):  
Elias Soltani ◽  
Sabine Gruber ◽  
Mostafa Oveisi ◽  
Nader Salehi ◽  
Iraj Alahdadi ◽  
...  
Keyword(s):  
Water Stress ◽  
Brassica Napus ◽  
High Potential ◽  
Brassica Napus L ◽  
Genetic Potential ◽  
Secondary Dormancy ◽  
Temperature Regimes ◽  
Depth Of Burial ◽  
Dormancy Induction ◽  
Medium Potential

AbstractThis study investigated the induction and loss of dormancy in oilseed rape (Brassica napus). Twenty genotypes were preliminary screened; from these, two genotypes, RGS003 and Hayola 308, which possess high potential for dormancy induction (HSD) and medium potential to induce secondary dormancy (MSD), were selected. The stratification of seeds at alternating temperatures of 5–30°C (in dark) significantly relieved secondary dormancy, but dormancy was not fully released. The ψb(50) values were −1.05 and −1.06 MPa for the MSD and the HSD before dormancy induction. After inducing dormancy, the ψb(50) values for the MSD and the HSD were increased to −0.59 and −0.01 on day 0 stratification at 20°C. The hydrothermal time (θHT) value was low for one-day stratification for HSD in comparison with other stratification treatments. Water stress can induce dormancy (if the seeds have the genetic potential for secondary dormancy) and warm stratification (in dark) can only reduce the intensity of dormancy. The seeds with a high potential of dormancy induction can overcome dormancy at alternating temperatures and in the presence of light. It can, therefore, be concluded that a portion of seeds can enter the cycle of dormancy ↔ non-dormancy. The secondary dormant seeds of B. napus cannot become non-dormant in darkness, but the level of dormancy may change from maximum (after water stress) to minimum (after warm stratification). It seems that the dormancy imposed by the conditions of deep burial (darkness in combination with water stress and more constant temperatures) might be more important to seed persistence than secondary dormancy induction and release. The dormancy cycle is an important pre-requisite in order to sense the depth of burial and the best time for seed germination.

scholarly journals Transcriptome analysis reveals gene responses to herbicide, tribenuron methyl, in Brassica napus L. during seed germination

BMC Genomics ◽  
2021 ◽  
Vol 22 (1) ◽  
Author(s):  
Liuyan Wang ◽  
Ruili Wang ◽  
Wei Lei ◽  
Jiayi Wu ◽  
Chenyang Li ◽  
...  
Keyword(s):  
Brassica Napus ◽  
Seed Germination ◽  
Transcriptome Analysis ◽  
Crop Production ◽  
Target Genes ◽  
Acetolactate Synthase ◽  
Plant Tolerance ◽  
Brassica Napus L ◽  
Antioxidant Genes ◽  
Tribenuron Methyl

Abstract Background Tribenuron methyl (TBM) is an herbicide that inhibits sulfonylurea acetolactate synthase (ALS) and is one of the most widely used broad-leaved herbicides for crop production. However, soil residues or drifting of the herbicide spray might affect the germination and growth of rapeseed, Brassica napus, so it is imperative to understand the response mechanism of rape to TBM during germination. The aim of this study was to use transcriptome analysis to reveal the gene responses in herbicide-tolerant rapeseed to TBM stress during seed germination. Results 2414, 2286, and 1068 differentially expressed genes (DEGs) were identified in TBM-treated resistant vs sensitive lines, treated vs. control sensitive lines, treated vs. control resistant lines, respectively. GO analysis showed that most DEGs were annotated to the oxidation-reduction pathways and catalytic activity. KEGG enrichment was mainly involved in plant-pathogen interactions, α-linolenic acid metabolism, glucosinolate biosynthesis, and phenylpropanoid biosynthesis. Based on GO and KEGG enrichment, a total of 137 target genes were identified, including genes involved in biotransferase activity, response to antioxidant stress and lipid metabolism. Biotransferase genes, CYP450, ABC and GST, detoxify herbicide molecules through physical or biochemical processes. Antioxidant genes, RBOH, WRKY, CDPK, MAPK, CAT, and POD regulate plant tolerance by transmitting ROS signals and triggering antioxidant enzyme expression. Lipid-related genes and hormone-related genes were also found, such as LOX3, ADH1, JAZ6, BIN2 and ERF, and they also played an important role in herbicide resistance. Conclusions This study provides insights for selecting TBM-tolerant rapeseed germplasm and exploring the molecular mechanism of TBM tolerance during germination.

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