Leaf phenolics of three willow clones differing in resistance to Melampsora rust infection. Hakulinen, J., Sorjonen, S., & Julkunen-Tiitto, R. Physiologia Plantarum, 105(4):662–669, 1999. _eprint: https://onlinelibrary.wiley.com/doi/pdf/10.1034/j.1399-3054.1999.105410.x
Leaf phenolics of three willow clones differing in resistance to Melampsora rust infection [link]Paper  doi  abstract   bibtex   
Leaf phenolic composition in three Salix myrsinifolia Salisb. clones (V8, V45, and V43), inoculated with Melampsora rust, was analyzed to detect local rust-induced alterations during different stages of infection (2, 7, and 21 days after inoculation [DAI]). Phenolic levels and percentage of uredial area varied significantly between clones. In the most resistant clone,V8, the levels of some phenolic compounds were lower in rust-infected plants than in control plants at the initial stages of rust infection, suggesting a rapid response of phenolic metabolism to rust attack. Moreover, the clone V8 contained the highest constitutive (+)-catechin level. In clone V45, rust infection caused the most pronounced increase in the levels of individual phenolics at 7 DAI. This increase may have been effective in retarding the subsequent spread and development of rust. In the most susceptible clone V43, rust-induced phenolic responses were less pronounced and delayed. The results suggest that in specific willow-rust interactions, constitutive levels of phenolics, as well as induced phenolic responses, may contribute to the expression of rust resistance. In general, rust-induced alterations in willow phenolic levels are highly specific to genotype and compound and vary depending on the stage of rust development.
@article{hakulinen_leaf_1999,
	title = {Leaf phenolics of three willow clones differing in resistance to {Melampsora} rust infection},
	volume = {105},
	issn = {1399-3054},
	url = {https://onlinelibrary.wiley.com/doi/abs/10.1034/j.1399-3054.1999.105410.x},
	doi = {10.1034/j.1399-3054.1999.105410.x},
	abstract = {Leaf phenolic composition in three Salix myrsinifolia Salisb. clones (V8, V45, and V43), inoculated with Melampsora rust, was analyzed to detect local rust-induced alterations during different stages of infection (2, 7, and 21 days after inoculation [DAI]). Phenolic levels and percentage of uredial area varied significantly between clones. In the most resistant clone,V8, the levels of some phenolic compounds were lower in rust-infected plants than in control plants at the initial stages of rust infection, suggesting a rapid response of phenolic metabolism to rust attack. Moreover, the clone V8 contained the highest constitutive (+)-catechin level. In clone V45, rust infection caused the most pronounced increase in the levels of individual phenolics at 7 DAI. This increase may have been effective in retarding the subsequent spread and development of rust. In the most susceptible clone V43, rust-induced phenolic responses were less pronounced and delayed. The results suggest that in specific willow-rust interactions, constitutive levels of phenolics, as well as induced phenolic responses, may contribute to the expression of rust resistance. In general, rust-induced alterations in willow phenolic levels are highly specific to genotype and compound and vary depending on the stage of rust development.},
	language = {en},
	number = {4},
	urldate = {2021-11-08},
	journal = {Physiologia Plantarum},
	author = {Hakulinen, Johanna and Sorjonen, Sanja and Julkunen-Tiitto, Riitta},
	year = {1999},
	note = {\_eprint: https://onlinelibrary.wiley.com/doi/pdf/10.1034/j.1399-3054.1999.105410.x},
	pages = {662--669},
}

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