Age-related resistance to plant pathogens

Panter, S.; Jones, David A.

doi:10.1016/s0065-2296(02)38032-7

Cited by 101 publications

(67 citation statements)

References 120 publications

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“…This fact, together with the Martínez-Álvarez et al [25] research, who found that damages in one-year-old inoculated and control seedlings were not different, seems to point out that P. sylvestris might acquire age-related resistance, in which a maturing plant or plant organ becomes less susceptible to pathogens [61].…”

Section: Discussionmentioning

confidence: 79%

Susceptibility of Several Northeastern Conifers to Fusarium circinatum and Strategies for Biocontrol

Martín‐García

Paraschiv

Flores-Pacheco

et al. 2017

Forests

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Fusarium circinatum, the causal of pine pitch canker disease (PPC), is now considered among the most important pathogens of Pinaceae in the world. Although in Europe PPC is only established in the Iberian Peninsula, the potential endangered areas cover over 10 million hectares under the current host distribution and climatic conditions. It is therefore a priority to test the susceptibility of those species and their provenances, within Central and Northern Europe and find biological control agents (BCAs) against the disease. In this study, the susceptibility of Pinus sylvestris, P. mugo and Picea abies Romanian provenances to F. circinatum was tested using three inoculum doses. In parallel, the potential use of Trichoderma atroviride and Trichoderma viride as BCAs against F. circinatum was also tested. This study has demonstrated, for the first time, the susceptibility of P. mugo to F. circinatum. Likewise, the susceptibility of P. abies was also confirmed. The fact that the Romanian provenance of P. sylvestris has not been susceptible to F. circinatum suggests genetic resistance as a potential tool to manage the disease. This, together with the apparent effectiveness of Trichoderma species as BCAs, seems to indicate that an integrated management of the disease might be feasible.

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Section: Discussionmentioning

confidence: 79%

Susceptibility of Several Northeastern Conifers to Fusarium circinatum and Strategies for Biocontrol

Martín‐García

Paraschiv

Flores-Pacheco

et al. 2017

Forests

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“…Plant resistance can be described on several mechanistic levels, and ontogenetic disease resistance, also known as age-related resistance (Panter and Jones, 2002;Develey-Rivière and Galiana, 2007), refers to resistance to a pathogen that changes with the developmental stage of the host, with resistance usually increasing with age. Differences in resistance to the same pathogen among young seedlings and mature trees have been reported previously (Solla et al, 2005;Aegerter and Gordon, 2006).…”

Section: Discussionmentioning

confidence: 99%

Evaluating methyl jasmonate for induction of resistance to Fusarium oxysporum, F. circinatum and Ophiostoma novo-ulmi

et al. 2012

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Damping off is probably the most common disease affecting seedlings in forest nurseries. In south-western Europe, the pitch canker and the Dutch elm disease cause relevant economic looses in forests, mostly in adult trees. The ability of the chemical plant elicitor methyl jasmonate (MeJA) to induce resistance in Pinus pinaster against Fusarium oxysporum and F. circinatum, and in Ulmus minor against Ophiostoma novo-ulmi was examined. In a first experiment, an aqueous solution of MeJA 5 mM was applied to P. pinaster seeds by immersion or spray, and different concentrations of MeJA (0, 0.1, 0.5, 1, 5 and 10 mM) were tested in seedlings before inoculations with F. oxysporum (10 5 and 10 7 spores mL -1 ). In a second experiment, 6-months-old P. pinaster seedlings were sprayed with 0 and 25 mM of MeJA, and later challenged with mycelium of F. circinatum. Finally, 4-year-old U. minor trees were sprayed with 0, 50 and 100 mM of MeJA and subsequently inoculated with O. novo-ulmi (10 6 spores mL -1 ). MeJA did not protect P. pinaster seeds and seedlings against F. oxysporum, probably because plants were too young for the physiological mechanisms responsible for resistance to be induced. Based on the morphological changes observed in the treated 6-months-old P. pinaster seedlings (reduction of growth and increased resin duct density), there is evidence that MeJA could have activated the mechanisms of resistance. However, 25 mM MeJA did not reduce plant mortality, probably because the spread of the virulent F. circinatum strain within the tree tissues was faster than the formation of effective defense responses. Based on the lack of phenological changes observed in the treated elms, there is no evidence that MeJA would cause induction of resistance. These results suggest that the use of MeJA to prevent F. oxysporum and F. circinatum in P. pinaster seedlings in nurseries and O. novo-ulmi in U. minor trees should be discarded.

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“…The receptors apparently work as negative regulators, increase the expression of ethylene receptors gene may be serve to reduce a hormone response. In general, treatments with ethylene promote fruit ripening, which can make tissues either more susceptible to disease or more resistant (Panter and Jones, 2002). Often, postharvest ethylene treatment increase disease developments imply through its acceleration of ripening or senescence.…”

Section: Genes Involved In Ethylene Biosynthesis and Cell Wall Disassmentioning

confidence: 99%

Microarray analysis of gene expression profile induced by the biocontrol yeast Cryptococcus laurentii in cherry tomato fruit

Jiang

Zheng

Chen

2009

Gene

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Age-related resistance to plant pathogens

Cited by 101 publications

References 120 publications

Susceptibility of Several Northeastern Conifers to Fusarium circinatum and Strategies for Biocontrol

Susceptibility of Several Northeastern Conifers to Fusarium circinatum and Strategies for Biocontrol

Evaluating methyl jasmonate for induction of resistance to Fusarium oxysporum, F. circinatum and Ophiostoma novo-ulmi

Microarray analysis of gene expression profile induced by the biocontrol yeast Cryptococcus laurentii in cherry tomato fruit

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