Track topics on Twitter Track topics that are important to you
Key message: One QTL for resistance against Leptosphaeria maculans growth in leaves of young plants in controlled environments overlapped with one QTL detected in adult plants in field experiments. The fungal pathogen Leptosphaeria maculans initially infects leaves of oilseed rape (Brassica napus) in autumn in Europe and then grows systemically from leaf lesions along the leaf petiole to the stem, where it causes damaging phoma stem canker (blackleg) in summer before harvest. Due to the difficulties of investigating resistance to L. maculans growth in leaves and petioles under field conditions, identification of quantitative resistance typically relies on end of season stem canker assessment on adult plants. To investigate whether quantitative resistance can be detected in young plants, we first selected nine representative DH (doubled haploid) lines from an oilseed rape DY ('Darmor-bzh' × 'Yudal') mapping population segregating for quantitative resistance against L. maculans for controlled environment experiment (CE). We observed a significant correlation between distance grown by L. maculans along the leaf petiole towards the stem (r = 0.91) in CE experiments and the severity of phoma stem canker in field experiments. To further investigate quantitative trait loci (QTL) related to resistance against growth of L. maculans in leaves of young plants in CE experiments, we selected 190 DH lines and compared the QTL detected in CE experiments with QTL related to stem canker severity in stems of adult plants in field experiments. Five QTL for resistance to L. maculans growth along the leaf petiole were detected; collectively they explained 35% of the variance. Two of these were also detected in leaf lesion area assessments and each explained 10-12% of the variance. One QTL on A02 co-localized with a QTL detected in stems of adult plants in field experiments. This suggests that resistance to the growth of L. maculans from leaves along the petioles towards the stems contributes to the quantitative resistance assessed in stems of adult plants in field experiments at the end of the growing season.
This article was published in the following journal.
Name: PloS one
The hormone auxin is involved in many biological processes throughout a plant's lifecycle. However, genes in the GH3 (Gretchen Hagen3) family, one of the three major auxin-responsive gene families, ha...
Heavy metals contamination in agricultural soil has become a worldwide problem, and soil characteristics modulate metal availability in soils. Four field experiments were conducted simultaneously to e...
High frequencies of homoeologous and even non-homologous chromosome recombination in Brassica hybrids can transfer useful traits between genomes, but also destabilise synthetic allopolyploids. We prod...
Leptosphaeria maculans is an ascomycetous fungus that causes the disease blackleg on Brassica napus (canola). In spite of the importance of the disease worldwide, the mechanisms of disease development...
The diverse biological activities of glucosinolate (GSL) hydrolysis products play significant biological and economical roles in the defense system and nutritional qualities of Brassica napus (oilseed...
Brassica vegetables are an important part of the investigators normal diet and are associated with a reduced risk of many chronic diseases. The protective effect may be as a result of the ...
RATIONALE: Brassica juncea that contains high amounts of selenium may slow the growth of cancer cells. Drugs used in chemotherapy, such as irinotecan and capecitabine, work in different wa...
The aim of the study is to translate and adapt a brief treatment protocol based on prolonged exposure provided within 72 hours after a rape to a Swedish context and pilot test feasibility ...
Pilot and feasibility diet and phyto-agent intervention among healthy men at risk for prostate cancer progression.
RATIONALE: Eating a diet high in vegetables may lower the risk of some types of cancer. Brassica vegetables (such as cabbages, kale, broccoli, Brussels sprouts, and cauliflower) and indole...
A plant genus of the family Cruciferae. It contains many species and cultivars used as food including cabbage, cauliflower, broccoli, Brussel sprouts, kale, collard greens, MUSTARD PLANT; (B. alba, B. junica, and B. nigra), turnips (BRASSICA NAPUS) and rapeseed (BRASSICA RAPA).
A plant species of the family BRASSICACEAE best known for the edible roots.
Any of several BRASSICA species that are commonly called mustard. Brassica alba is white mustard, B. juncea is brown or Chinese mustard, and B. nigra is black, brown, or red mustard. The plant is grown both for mustard seed from which oil is extracted and for greens or animal feed. It was formerly used as an emetic, counter-irritant, and carminative. There is no relationship to MUSTARD COMPOUNDS.
Unlawful sexual intercourse without consent of the victim.
A type of strength-building exercise program that requires the body muscle to exert a force against some form of resistance, such as weight, stretch bands, water, or immovable objects. Resistance exercise is a combination of static and dynamic contractions involving shortening and lengthening of skeletal muscles.