Hormone and secondary metabolite profiling in chestnut during susceptible and resistant interactions with Phytophthora cinnamomi

Camisón, Álvaro; Martı́n, Mercedes; Sánchez-Bel, Paloma; Flors, Víctor; Alcaide, Francisco; Morcuende, David; Pinto, Glória; Solla, Alejandro

doi:10.1016/j.jplph.2019.153030

Cited by 26 publications

(16 citation statements)

References 68 publications

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“…Drought priming in parental plants was recently reported to induce drought tolerance in offspring (Wang et al 2018;Vivas et al 2019). In our study, the reduced root water uptake capacity often associated to ink disease (Maurel et al 2001;Dinis et al 2011;Camisón et al 2019) combined with the low precipitation in 2015 at the seed collection site were not enough to induce drought-priming in offspring of C. sativa.…”

Section: Seed Weight and Offspring Of Ink-diseased Chestnutscontrasting

confidence: 48%

“…(Atlantic areas of Europe), leading to extensive mortality of chestnut trees (Vettraino et al 2005;Gonthier and Nicolotti 2013;Jung et al 2018). Infected chestnuts initially show small-sized chlorotic foliage, followed by defoliation and dieback, eventually resulting in whole crown dieback and tree mortality (Phillips and Burdekin 1982;Jung et al 2018;Camisón et al 2019). Symptoms are caused by extensive root loss and necrosis in the inner bark of main roots and collar.…”

Section: Introductionmentioning

confidence: 99%

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Increased tolerance to Phytophthora cinnamomi in offspring of ink-diseased chestnut (Castanea sativa Miller) trees

Camisón

Martı́n

Oliva

et al. 2019

Annals of Forest Science

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& Key message Increased tolerance to Phytophthora cinnamomi was observed in small-sized offspring of ink-diseased chestnut trees, suggesting that a virulent pathogen can trigger a defence response of trees in the subsequent generation. Increased tolerance to water stress was not observed in offspring of chestnut trees. & Context In sweet chestnut (Castanea sativa Miller), P. cinnamomi Rands is responsible for the widespread and destructive ink disease. & Aims We investigated if the susceptibility of C. sativa to water stress and P. cinnamomi depends on the health status of mother trees. & Methods Plants were grown from seeds collected from healthy and ink-diseased chestnut trees. Leaf wilting after drought exposure and plant mortality after pathogen inoculation were assessed. & Results Offspring of ink-diseased trees had poorer performance in plant height and root biomass than offspring of healthy trees, with allocation of biomass to seeds mediating this effect. Leaf wilting due to water stress was similar in offspring of healthy and P. cinnamomi-infected trees. However, increased tolerance to P. cinnamomi was observed in small-sized seedlings, suggesting that tolerance in C. sativa may involve growth costs. This is the first report of increased tolerance to P. cinnamomi in plants germinating from a diseased tree. & Conclusion The results suggest that an invasive pathogen can regulate the performance and prime a defence response of a forest tree species in the subsequent generation, and generate conflicting selection pressures related to plant size.

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Section: Seed Weight and Offspring Of Ink-diseased Chestnutscontrasting

confidence: 48%

Section: Introductionmentioning

confidence: 99%

Increased tolerance to Phytophthora cinnamomi in offspring of ink-diseased chestnut (Castanea sativa Miller) trees

Camisón

Martı́n

Oliva

et al. 2019

Annals of Forest Science

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“…An increase in endogenous levels of ABA was also observed when plants were infected with pathogens, for e.g., Phaseolus by Colletotrichum (Dunn et al, 1990), flax by Fusarium (Boba et al, 2020), and nced5 mutant of Arabidopsis by Alternaria (Fan et al, 2009). Similarly, the clonal variation of chestnut susceptibility or resistance to Fusarium was related to ABA levels under infection (Camisón et al, 2019). The exact relationship between endogenous ABA levels and disease susceptibility of plants appeared to be complex, as the relationship depended on the duration of infection, other stresses, and the type of pathogen (Asselbergh et al, 2008).…”

Section: Increased Aba Levels Under Different Stress Conditionsmentioning

confidence: 90%

Abscisic Acid-Induced Stomatal Closure: An Important Component of Plant Defense Against Abiotic and Biotic Stress

2021

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Abscisic acid (ABA) is a stress hormone that accumulates under different abiotic and biotic stresses. A typical effect of ABA on leaves is to reduce transpirational water loss by closing stomata and parallelly defend against microbes by restricting their entry through stomatal pores. ABA can also promote the accumulation of polyamines, sphingolipids, and even proline. Stomatal closure by compounds other than ABA also helps plant defense against both abiotic and biotic stress factors. Further, ABA can interact with other hormones, such as methyl jasmonate (MJ) and salicylic acid (SA). Such cross-talk can be an additional factor in plant adaptations against environmental stresses and microbial pathogens. The present review highlights the recent progress in understanding ABA’s multifaceted role under stress conditions, particularly stomatal closure. We point out the importance of reactive oxygen species (ROS), reactive carbonyl species (RCS), nitric oxide (NO), and Ca2+ in guard cells as key signaling components during the ABA-mediated short-term plant defense reactions. The rise in ROS, RCS, NO, and intracellular Ca2+ triggered by ABA can promote additional events involved in long-term adaptive measures, including gene expression, accumulation of compatible solutes to protect the cell, hypersensitive response (HR), and programmed cell death (PCD). Several pathogens can counteract and try to reopen stomata. Similarly, pathogens attempt to trigger PCD of host tissue to their benefit. Yet, ABA-induced effects independent of stomatal closure can delay the pathogen spread and infection within leaves. Stomatal closure and other ABA influences can be among the early steps of defense and a crucial component of plants’ innate immunity response. Stomatal guard cells are quite sensitive to environmental stress and are considered good model systems for signal transduction studies. Further research on the ABA-induced stomatal closure mechanism can help us design strategies for plant/crop adaptations to stress.

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“…forests in North America before the emergence of the chestnut blight caused by the ascomycete Cryphonectria parasitica (Murrill) M. E. Barr, which functionally eradicated this tree species (Hansen, 2015). The oomycete P. cinnamomi attacks the fine feeder roots and the root collar, which affects tree nutrition and leads to the formation of abnormally small and chlorotic leaves, defoliation, and dieback of the canopy (Camisón, Martín, Sánchez‐Bel, et al., 2019). At advanced stages of the disease, root cankers and collar rot usually lead to tree death, which can occur years after the first symptoms were visible in the canopy (Jung et al., 2018).…”

Section: Methodsmentioning

confidence: 99%

Invasive forest pathogens affect the characteristics, microbial colonisation, and decomposition of leaf litter in streams

2021

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Invasive tree pathogens threaten forests worldwide, but their effects on streams are poorly understood. Nevertheless, tree infections that lead to changes in the characteristics of litter inputs to streams may affect stream communities and ecosystem processes. We studied cross‐ecosystem effects derived from Phytophthora cinnamomi, Phytophthora ×alni, and Ophiostoma novo‐ulmi infection on Castanea sativa (chestnut), Alnus lusitanica (alder), and Ulmus minor (elm) trees, respectively, by assessing physical and chemical characteristics of senescent leaves from healthy, symptomatic, and highly symptomatic individuals. Leaf litter from the three health statuses per tree species was then incubated in laboratory microcosms and the effects of tree infection on microbial decomposers and leaf litter decomposition were assessed. Tree infection significantly affected leaf litter characteristics, microbial decomposers and leaf litter decomposition, and the health status of trees conditioned these effects differently depending on the tree species. In C. sativa, leaf litter of highly symptomatic trees had higher toughness, higher polyphenolic concentration and slower decomposition than leaf litter of symptomatic and healthy trees. In A. lusitanica, leaf litter of highly symptomatic trees had higher phosphorus concentration, lower carbon:phosphorus ratio and faster decomposition than leaf litter of symptomatic and healthy trees. Finally, in U. minor, leaf litter of highly symptomatic trees had higher nitrogen concentration and lower carbon:nitrogen ratio than leaf litter of healthy trees, and faster decomposition than leaf litter of symptomatic and healthy trees. Effects of changes in litter characteristics on litter decomposition were mediated by changes in microbial decomposer colonisation and activity. The composition of the aquatic hyphomycetes communities associated with C. sativa and U. minor litter varied depending on the tree health status. Most striking was the two‐fold higher aquatic hyphomycetes species richness in litter of U. minor trees infected with O. novo‐ulmi than in litter of healthy U. minor trees. Tree infection alters the nutritional quality of leaf litter, potentially affecting the functioning of aquatic ecosystems strongly dependent on riparian litter inputs.

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Hormone and secondary metabolite profiling in chestnut during susceptible and resistant interactions with Phytophthora cinnamomi

Cited by 26 publications

References 68 publications

Increased tolerance to Phytophthora cinnamomi in offspring of ink-diseased chestnut (Castanea sativa Miller) trees

Increased tolerance to Phytophthora cinnamomi in offspring of ink-diseased chestnut (Castanea sativa Miller) trees

Abscisic Acid-Induced Stomatal Closure: An Important Component of Plant Defense Against Abiotic and Biotic Stress

Invasive forest pathogens affect the characteristics, microbial colonisation, and decomposition of leaf litter in streams

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