634 Obstanlagen, Früchte, Forstwirtschaft
Refine
Departments, institutes and facilities
Document Type
- Article (63) (remove)
Year of publication
Keywords
- Malus domestica (8)
- Mal d 1 (6)
- apple allergy (5)
- food allergy (4)
- fruit quality (4)
- Bet v 1 (3)
- Chlorophyll fluorescence (3)
- Oxidative stress (3)
- PR-10 (3)
- Paraquat (3)
- antioxidative capacity (3)
- birch pollen (3)
- bitter pit (3)
- calcium chloride (3)
- cross-reactions (3)
- cuticular penetration (3)
- pathogenesis-related protein (3)
- Gene expression (2)
- Phaseolus vulgaris (2)
- Phenols (2)
- Prunus avium L. (2)
- Tocopherol (2)
- allergens (2)
- anthocyanins (2)
- antioxidants (2)
- apple (Malus domestica Borkh.) (2)
- ascorbic acid (2)
- carotenoids (2)
- climate change (2)
- flavonoids (2)
- hail net (2)
- reflective mulch (2)
- 1-MCP (1)
- 1-Methycyclopropene (1)
- Abiotic stress (1)
- Acidity (1)
- Allergen (1)
- Apple (1)
- Apple (Malus´ domestica Borkh.) (1)
- Apple replant disease (1)
- Bio-active compounds (1)
- BioMark HD microfluidic system (1)
- Ca deficiency (1)
- Catechin (1)
- Chemical composition (1)
- Chlorophyll (1)
- Climate change (1)
- Contact fungicides (1)
- EGTA-extractable calcium (1)
- Epicatechin (1)
- Fruit firmness (1)
- Fruit storage (1)
- Hydrophobicity (1)
- Leaf (1)
- Light limitation (1)
- Long-term storage (1)
- Lycopersicon esculentum (1)
- Lycopersicon lycopersicum (1)
- Malus genotypes (1)
- Mancozeb (1)
- Micromorphology (1)
- Minerals (1)
- Necrotic lesions (1)
- Oxidative damage (1)
- Photosystem (1)
- Physiological stress responses in plants (1)
- Polyphenoloxidase (1)
- Prohexadione-Ca (1)
- Protected cultivation (1)
- Rain simulation (1)
- Root zone temperature (1)
- Rosaceae (1)
- Secondary compounds in plants (1)
- Sugar (1)
- Surface wax (1)
- Sustainability (1)
- Sweet cherry (Prunus avium L.) (1)
- T. cucumerina (1)
- Taste (1)
- Trichosanthes cucumerina L. (1)
- UV‐B radiation (1)
- Vitamin C (1)
- Wash-off (1)
- active oxygen (1)
- allergenicity (1)
- allergy (1)
- apple fruit (1)
- apple fruits (1)
- apple replant disease (ARD) (1)
- apple scab (1)
- biological efficacy (1)
- blossom-end rot (1)
- cold storage (1)
- colouration (1)
- diffuse reflection (1)
- enzymes (1)
- ethoxylate (1)
- foliar nutrition (1)
- freezing injury (1)
- fruit colour (1)
- glycerine (1)
- greenhouse bio-test (1)
- health (1)
- high-throughput qRT-PCR (1)
- long-term storage (1)
- mechanical thinning (1)
- pathogenesis- related protein (1)
- peroxidase (1)
- phenolic compounds (1)
- phenolics (1)
- photosystem II (1)
- phytoalexins (1)
- polyphenols (1)
- polytunnel (1)
- protected cultivation (1)
- protection (1)
- quantitative RP-HPLC-DAD (1)
- quantitative RT-PCR (1)
- rainfastness (1)
- ripening (1)
- soil properties (1)
- soil sickness (1)
- superoxide dismutase (1)
- surfactants (1)
- sustainability (1)
- sweet cherry (Prunus avium L.) (1)
- systemic response (1)
- tomato fruit (1)
- water-extractable calcium (1)
- yield (1)
- α-tocopherol (1)
Reduction of calcium deficiency symptoms by exogenous application of calcium chloride solutions
(2002)
Apple replant disease (ARD) is a soil-borne disease, which is of particular importance for fruit tree nurseries and fruit growers. The disease manifests by a poor vegetative development, stunted growth, and reduced yield in terms of quantity and quality, if apple plants (usually rootstocks) are replanted several times at the same site. Genotype-specific differences in the reaction of apple plants to ARD are documented, but less is known about the genetic mechanisms behind this symptomatology. Recent transcriptome analyses resulted in a number of candidate genes possibly involved in the plant response. In the present study, the expression of 108 selected candidate genes was investigated in root and leaf tissue of four different apple genotypes grown in untreated ARD soil and ARD soil disinfected by γ-irradiation originating from two different sites in Germany. Thirty-nine out of the 108 candidate genes were differentially expressed in roots by taking a p-value of < 0.05 and a fold change of > 1.5 as cutoff. Sixteen genes were more than 4.5-fold upregulated in roots of plants grown in ARD soil. The four genes MNL2 (putative mannosidase); ALF5 (multi antimicrobial extrusion protein); UGT73B4 (uridine diphosphate (UDP)-glycosyltransferase 73B4), and ECHI (chitin-binding) were significantly upregulated in roots. These genes seem to be related to the host plant response to ARD, although they have never been described in this context before. Six of the highly upregulated genes belong to the phytoalexin biosynthesis pathway. Their genotype-specific gene expression pattern was consistent with the phytoalexin content measured in roots. The biphenyl synthase (BIS) genes were found to be useful as early biomarkers for ARD, because their expression pattern correlated well with the phenotypic reaction of the Malus genotypes investigated.