The accumulation of phenolic compounds and increased activities of related enzymes contribute to early defense against walnut blight
| Autor: | Xueqin Wan, Jianming Yi, Ke Fang, Dan He, Xu Xiao, Shan Han, Guangli Cao, Shijiao Jiang |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
0106 biological sciences
0301 basic medicine biology Inoculation food and beverages Plant Science Xanthomonas arboricola Malondialdehyde biology.organism_classification 01 natural sciences Polyphenol oxidase Superoxide dismutase 03 medical and health sciences chemistry.chemical_compound Horticulture 030104 developmental biology chemistry Catalase Genetics biology.protein Blight 010606 plant biology & botany Peroxidase |
| Zdroj: | Physiological and Molecular Plant Pathology. 108:101433 |
| ISSN: | 0885-5765 |
| DOI: | 10.1016/j.pmpp.2019.101433 |
| Popis: | Xanthomonas arboricola pv. juglandis (Xaj) is the causal pathogen of walnut blight. This work evaluates the correlations between selected biochemical responses to Xaj and the degree of blight sensitivity in ten genotypes. Activity of superoxide dismutase (SOD), peroxidase (POX), l -phenylalanine ammonia-lyase (PAL) and polyphenol oxidase (PPO), and content of phenolic compounds and malondialdehyde (MDA) significantly increased in all walnut genotypes after inoculation by Xaj while Catalase (CAT) activity varied between genotypes. Genotype's blight sensitivity was correlated with relative increases in phenolic compound content and PAL, PPO and POX activity at the initial stage of inoculation. The results show both similarities and distinct features in defense response in genotypes, suggesting that the metabolism of phenolic compounds may play a more important role in initial stages of inoculation than originally thought. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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