scholarly journals The Impact of Forest Fungi on Promoting Growth and Development of Brassica napus L.

Agronomy ◽  
2021 ◽  
Vol 11 (12) ◽  
pp. 2475
Author(s):  
Grażyna B. Dąbrowska ◽  
Zuzanna Garstecka ◽  
Alina Trejgell ◽  
Henryk P. Dąbrowski ◽  
Wiktoria Konieczna ◽  
...  
Keyword(s):  
Brassica Napus ◽  
Oilseed Rape ◽  
Growth And Development ◽  
Plant Pathogens ◽  
Fungal Species ◽  
Brassica Napus L ◽  
Number Of Microorganisms ◽  
The Impact

Inoculation of plants with fungi has been shown to increase yields by improving germination, seedling vigor, plant growth, root morphogenesis, photosynthesis, and flowering through direct or indirect mechanisms. These mechanisms include solubilization and mineralization of nutrients, facilitating their uptake by plants, regulation of hormone balance, production of volatile organic compounds and microbial enzymes, suppression of plant pathogens, and mitigation of abiotic stresses. In the presented experiments, the effect of selected forest soil fungi on the growth and development of Brassica napus L. seedlings was investigated. Inoculation was carried out in vivo and in pot experiments with ectomycorrhizal and saprophytic fungi typical of forest soils: Collybia tuberosa, Clitocybe sp., Laccaria laccata, Hebeloma mesophaeum, and Cyathusolla. It was shown that all analyzed fungi produced IAA. In the in vitro experiment, B. napus inoculated with L. laccata showed stimulated root growth and greater number of leaves compared to control plants. A similar stimulatory effect on lateral root formation was observed in cuttings grown in pots in the presence of the C. olla fungus. In the pot experiment, the seedlings inoculated with the L. laccata fungus also showed increased growth of shoots and biomass. The effect of inoculation with the tested fungal strains, especially C. olla, on the growth and development of oilseed rape was probably indirect, as it also contributed to an increase in the number of microorganisms, especially soil bacteria. The expression of the metallothioneins in B. napus (BnMT1-BnMT3) varied depending on the fungal species. The presence of C. olla significantly increased BnMT2 expression in oilseed rape. It was found that BnMT1 expression increased and BnMT3 transcripts decreased in plants growing in the presence of L. laccata. This indicates the involvement of BnMT in the adaptation of oilseed rape to growth in fungi presence.

In vivo monitor oxidative burst induced by Cd2+ stress for the oilseed rape (Brassica napus L.) based on electrochemical microbiosensor

2009 ◽  
Vol 21 (2) ◽  
pp. 192-196 ◽  
Author(s):  
Qiao Xu ◽  
Fang Wei ◽  
Zhan Wang ◽  
Qin Yang ◽  
Yuan-Di Zhao ◽  
...  
Keyword(s):  
Brassica Napus ◽  
Oilseed Rape ◽  
Oxidative Burst ◽  
Brassica Napus L

scholarly journals Dynamics of dry matter and selenium accumulation in oilseed rape (Brassica napus L.) in response to organic and inorganic selenium treatments

2015 ◽  
Vol 24 (2) ◽  
pp. 104-117 ◽  
Author(s):  
Nashmin Ebrahimi ◽  
Helinä Hartikainen ◽  
Asko Simojoki ◽  
Roghieh Hajiboland ◽  
Mervi M Seppänen
Keyword(s):  
Brassica Napus ◽  
Oilseed Rape ◽  
Plant Residues ◽  
Growth Stages ◽  
Brassica Napus L ◽  
Soil Microbial ◽  
Plant Parts ◽  
Selenium Accumulation ◽  
Inorganic Selenium ◽  
The Impact

The uptake by and subsequent translocation of selenium (Se) within the plant is dependent on its chemical from and soil properties that dictate this trace element’s bioavailability. Plant species differ in their tendency to accumulate Se. Se taken-up by plants is returned to soil in plant residues, but the bioavailability of organic Se in those residues is poorly known. We investigated the impact of inorganic (Na2SeO4), organic (Se-enriched stem and leaf residues) Se applications and also soil microbial respiration on the growth and Se concentrations of various plant organs of oilseed rape (Brassica napus L.) during its development from the rosette to the seed filling stage. Both inorganic and organic Se slightly improved plant growth and enhanced plant development. Inorganic Se was more bioavailable than the organic forms and resulted in 3-fold to 6-fold higher Se concentrations in the siliques. Inorganic Se in autoclaved soil tended to elevate the Se concentration in all plant parts and at all growth stages. The organic Se raised Se concentrations in plants much less effectively than the inorganic selenate. Therefore, the use of inorganic Se is still recommended for biofortification.

scholarly journals Early in vitro selection of winter oilseed rape (Brassica napus L.) plants with the fertility restorer gene for CMS Shaan 2A via non-destructive molecular analysis of microspore-derived embryos

2019 ◽  
Vol 55 (No. 4) ◽  
pp. 162-165
Author(s):  
Miroslav Klíma ◽  
Eva Jozová ◽  
Irena Jelínková ◽  
Vratislav Kučera ◽  
Shengwu Hu ◽  
...  
Keyword(s):  
Brassica Napus ◽  
Oilseed Rape ◽  
In Vitro Selection ◽  
Restorer Gene ◽  
Brassica Napus L ◽  
Rf Gene ◽  
Dh Lines ◽  
Non Destructive ◽  
Selection Of

Cotyledons of 201 microspore-derived oilseed rape (Brassica napus) embryos were analysed for the presence of the cytoplasmic male sterility Shaan 2A restorer gene using the primer pair 3F/4R. In total, 172 plants regenerated and were grown to the generative stage. Among phenotypically non-haploid flowering plants, there was a broad spectrum of different flower types from normally developed flowers to flowers with short anthers, stamens, or deformed flowers with atypically developed floral organs, often with traces of pollen. For this reason, only 115 typically fertile or sterile accessions were selected for further phenotype-genotype comparisons. In 14 plants (12.2%) the phenotype did not match the genotype: two plants were marked as fertile, but without the Rf gene. Vice versa, in 12 sterile plants the Rf gene was determined. Nevertheless, the two fertile plants did not produce any pods after self-pollination. In total, 47 doubled haploid (DH) lines with good seed yield, carrying the Rf gene were harvested.  

scholarly journals Germinative and Post-Germinative Behaviours of Brassica napus Seeds Are Impacted by the Severity of S Limitation Applied to the Parent Plants

Plants ◽  
2019 ◽  
Vol 8 (1) ◽  
pp. 12 ◽  
Author(s):  
Philippe D’Hooghe ◽  
Dimitri Picot ◽  
Sophie Brunel-Muguet ◽  
Stanislav Kopriva ◽  
Jean-Christophe Avice ◽  
...  
Keyword(s):  
Brassica Napus ◽  
Oilseed Rape ◽  
Seed Viability ◽  
Pulse Method ◽  
Sensu Stricto ◽  
Uptake Capacity ◽  
Brassica Napus L ◽  
Sulphate Uptake ◽  
Mother Plants ◽  
The Impact

In oilseed rape (Brassica napus L.), sulphur (S) limitation leads to a reduction of seed yield and nutritional quality, but also to a reduction of seed viability and vigour. S metabolism is known to be involved in the control of germination sensu stricto and seedling establishment. Nevertheless, how the germination and the first steps of plant growth are impacted in seeds produced by plants subjected to various sulphate limitations remains largely unknown. Therefore, this study aimed at determining the impact of various S-limited conditions applied to the mother plants on the germination indexes and the rate of viable seedlings in a spring oilseed rape cultivar (cv. Yudal). Using a 34S-sulphate pulse method, the sulphate uptake capacity during the seedling development was also investigated. The rate of viable seedlings was significantly reduced for seeds produced under the strongest S-limited conditions. This is related to a reduction of germination vigour and to perturbations of post-germinative events. Compared to green seedlings obtained from seeds produced by well-S-supplied plants, the viable seedlings coming from seeds harvested on plants subjected to severe S-limitation treatment showed nonetheless a higher dry biomass and were able to enhance the sulphate uptake by roots and the S translocation to shoots.

scholarly journals Yield of Winter Oilseed Rape (Brassica napus L. var. napus) in a Short-Term Monoculture and the Macronutrient Accumulation in Relation to the Dose and Method of Sulphur Application

Agronomy ◽  
2021 ◽  
Vol 12 (1) ◽  
pp. 68
Author(s):  
Mariusz Stepaniuk ◽  
Aleksandra Głowacka
Keyword(s):  
Brassica Napus ◽  
Oilseed Rape ◽  
Foliar Application ◽  
Soil Conditions ◽  
Winter Oilseed Rape ◽  
Brassica Napus L ◽  
Soil Application ◽  
Application Method ◽  
Combined Application ◽  
The Impact

The objective of this study was to assess the yield efficiency of sulphur-enhanced fertilisers, depending on the dose and application method, in a short-lived (three-year) monoculture of winter oilseed rape under the climate and soil conditions of south-eastern Poland. The experiment was carried out between 2010 and 2013 on winter oilseed rape (Brassica napus L. var. napus) of the Orlando variety, fertilised with different sulphur doses—0, 20, 40 or 60 kg S ha−1 applied in different method—soil application sowing, foliar application in the spring, and soil application sowing + foliar application in the spring (combined application). Following the harvest, seed and straw yields and the content of macroelements (N, S, P, K, Ca and Mg) in the seed and straw samples were determined. The harvest indices were also established for each of these elements. The impact of sulphur on winter oilseed rape yield depended significantly on both the dose and the application method. Even at the lowest dose (20 kg·ha−1), sulphur materially increased seed yield, regardless of the application method. With autumn soil application and foliar application, differences between the lowest dose and the higher doses (40 and 60 kg·ha−1) were not significant. However, with combined application, the highest dose (60 kg·ha−1) significantly increased yield compared to the lower doses. In general, all the fertilisation approaches significantly increased the N, P, K, Ca and Mg contents compared to the control sample, but the differences between them were not substantial. Each of the sulphur application approaches decreased the harvest index for sulphur. The foliar application of each of the doses decreased the harvest indices for N, P, K and Ca. The soil application of 20 kg·ha−1, and the mixed application of 40 and 60 kg·ha−1, all increased the harvest indices for P, K and Ca.

In vitro fermentability and methane production of some alternative forages in Australia

2016 ◽  
Vol 56 (3) ◽  
pp. 641 ◽  
Author(s):  
Z. Durmic ◽  
P. J. Moate ◽  
J. L. Jacobs ◽  
J. Vadhanabhuti ◽  
P. E. Vercoe
Keyword(s):  
Brassica Napus ◽  
Methane Production ◽  
Volatile Fatty Acids ◽  
Plantago Lanceolata ◽  
Ammonia Concentration ◽  
Gas Production ◽  
Ruminal Fermentation ◽  
Brassica Napus L

A study was conducted to examine in vitro ruminal fermentation profiles and methane production of some alternative forage species (n = 10) in Australia. Extent of fermentation was assessed using an in vitro batch fermentation system, where total gas production, methane production, and concentrations in ruminal fluid of volatile fatty acids (VFA) and ammonia were measured. Forages varied in their fermentability, with highest total gas, methane, VFA and ammonia production recorded from selected samples of Brassica napus L. cv. Winfred. Lowest methane production (i.e. 30% less than that formed by the highest-producing one) was observed in Plantago lanceolata L. cv. Tonic and Cichorium intybus L. cv. Choice. Selected plants, including P. lanceolata L. cv. Tonic, Brassica rapa L. cv. Marco, Brassica napus L. cv. Hunter had reduced acetate : propionate ratio and/or ammonia concentration, along with relatively low methane production compared with other species tested, while overall fermentation was not affected. It was concluded that selected novel forages have some advantageous fermentability profiles in the rumen and, in particular, inhibit methane production. However, before these can be recommended as valuable supplementary feedstuffs for ruminants in Australia, further studies are needed to confirm these effects over a range of samples, conditions and in vivo.

scholarly journals Inhibition of the glucose-6-phosphate transporter in oilseed rape (Brassica napus L.) plastids by acyl-CoA thioesters reduces fatty acid synthesis

2000 ◽  
Vol 352 (2) ◽  
pp. 525-532 ◽  
Author(s):  
Simon R. FOX ◽  
Lionel M. HILL ◽  
Stephen RAWSTHORNE ◽  
Matthew J. HILLS
Keyword(s):  
Fatty Acid ◽  
Brassica Napus ◽  
Oilseed Rape ◽  
Acid Synthesis ◽  
Brassica Napus L ◽  
Coa Ligase ◽  
Chain Acyl ◽  
Coa Thioesters ◽  
Long Chain

Addition of oleoyl-CoA (1µM), or other acyl-CoA thioesters with a chain length of C16 or greater, to oilseed rape plastids (Brassica napus L.) inhibited the rate of D-glucose 6-phosphate (Glc6P) uptake by 70% after 2min. The IC50 value for oleoyl-CoA inhibition of the transporter was approx. 0.2–0.3µM. Inhibition was alleviated by the addition of acyl-CoA binding protein (ACBP) or BSA at slightly higher concentrations. Oleic acid (5–25µM), Tween 40 (10µM), Triton-X 100 (10µM) and palmitoylcarnitine (5µM) had no effect on Glc6P uptake. The uptake of [1-14C]Glc6P occurred in exchange for Pi, 3-phosphoglycerate or Glc6P at a typical rate of 30nmol Glc6P/min per unit of glyceraldehyde-3-phosphate dehydrogenase (NADP+). The Km(app) of the Glc6P transporter for Glc6P was 100µM. Neither CoA (0.3mM) nor ATP (3mM) inhibited Glc6P uptake, but the transporter was inhibited by 72% when ATP and CoA were added together. This inhibition was attributable to the synthesis of acyl-CoA thioesters, predominantly oleoyl-CoA and palmitoyl-CoA, by long-chain fatty acid-CoA ligase (EC 6.2.1.3) from endogenous fatty acids in the plastid preparations. Acyl-CoA thioesters did not inhibit the uptake of [2-14C]pyruvate or D-[1-14C]glucose into plastids. In vivo quantities of oleoyl-CoA and other long-chain acyl-CoA thioesters were lower than those for ACBP in early cotyledonary embryos, 0.7±0.2pmol/embryo and 2.2±0.2pmol/embryo respectively, but in late cotyledonary embryos quantities of long-chain acyl-CoA thioesters were greater than ACBP, 3±0.4pmol/embryo and 1.9±0.2pmol/embryo respectively.

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