Annals of Forest Science最新文献

{"title":"MYB4 is the best candidate transcription factor involved in pinosylvin stilbene biosynthesis in Pinus strobus L. cells by fungal elicitor treatment","authors":"Yi Rae Kim, Young Bum Moon, Han Bin Choi, Jung Yeon Han, Han Suk Choi, Sangrea Shim, Yong Eui Choi","doi":"10.1186/s13595-024-01234-x","DOIUrl":"https://doi.org/10.1186/s13595-024-01234-x","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Key message</h3><p>Dihydropinosylvin monomethyl ether (DPME) and pinosylvin monomethyl ether (PME) are pinosylvin derivatives that show high nematicidal activity against pine wood nematodes (PWNs). Here, we found that fungal elicitor treatment boosted the production of DPME and PME in cultured <i>Pinus strobus</i> L. cells and investigated the transcription factors (TFs) regulating the genes in the pinosylvin stilbenoid biosynthesis pathway.</p><h3 data-test=\"abstract-sub-heading\">Context</h3><p>The discovery of TFs involved in the synthesis of DPME and PME provides an important clue to understanding the pinosylvin stilbenoid synthesis in pine plants.</p><h3 data-test=\"abstract-sub-heading\">Aims</h3><p>We investigated the best fungal elicitor for the production of DPME and PME and the transcriptional activities of genes involved in PME and DPME biosynthesis in <i>P. strobus</i> L. cells after fungal elicitor treatment.</p><h3 data-test=\"abstract-sub-heading\">Methods</h3><p>The content of DPME and PME in <i>P. strobus</i> cells was examined after treatment with fungal elicitors prepared from seven different species of fungi. Moreover, the role of fungal elicitors in the transcriptional activity of genes involved in DPME and PME biosynthesis was investigated by transcriptome analysis using RNA sequencing.</p><h3 data-test=\"abstract-sub-heading\">Results</h3><p><i>Penicillium chrysogenum</i> Thorn was the most efficient fungal elicitor for the production of DPME and PME in <i>P. strobus</i> cells among the other fungal species. The accumulation of DPME and PME in <i>P. strobus</i> cells after <i>P. chrysogenum</i> elicitor treatment increased 12.7-fold and 23.7-fold, respectively, compared to the control. Transcriptome analysis revealed that fungal elicitor treatment resulted in enhanced transcription of the <i>PAL, 4CL</i>, <i>STS, PMT,</i> and <i>ACC</i> genes, which are involved in PME and DPME biosynthesis. Some transcription factors belonging to the bHLH, MYB, WRKY, and ERF families showed a high transcription rate after fungal elicitor treatment.</p><h3 data-test=\"abstract-sub-heading\">Conclusions</h3><p>We found that the fungal elicitor is a strong inducer of the accumulation of pinosylvin derivatives in the cells of <i>P. strobus</i>. We selected one unigene (c133966_g3_i1 in the MYB family) as the best candidate TF that regulates the DPME and PME biosynthesis in <i>P. strobus</i> by transcriptome analysis.</p>","PeriodicalId":7994,"journal":{"name":"Annals of Forest Science","volume":"19 1","pages":""},"PeriodicalIF":3.0,"publicationDate":"2024-05-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140887483","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Aggregated database of forest soil chemical properties in the Czech Republic based on surveys from 2000 to 2020","authors":"Kateřina Neudertová Hellebrandová, Věra Fadrhonsová, Vít Šrámek","doi":"10.1186/s13595-024-01225-y","DOIUrl":"https://doi.org/10.1186/s13595-024-01225-y","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Key message</h3><p>The dataset includes data from forest soil surveys conducted in the period 2000–2020. It provides soil and site variables from 8269 locations. Data are aggregated in three basic soil layers: upper organic soil horizon (FH, 6875 locations), upper mineral layer 0–30 cm (M03, 8051 locations) and deeper mineral soil layer 30–80 cm (M38, 2260 locations).</p><p>The dataset is available at https://doi.org/10.5281/zenodo.10608814, and access to the metadata is at https://metadata-afs.nancy.inra.fr/geonetwork/srv/fre/catalog.search#/metadata/38f24573-3c0d-469a-a66a-7060ce082155.</p>","PeriodicalId":7994,"journal":{"name":"Annals of Forest Science","volume":"27 1","pages":""},"PeriodicalIF":3.0,"publicationDate":"2024-04-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140614554","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Improving monitoring and management methods is of the utmost importance in countries at risk of invasion by the pinewood nematode","authors":"Christelle Robinet, Annie Raffin, Hervé Jactel, Emmanuel Kersaudy, Philippe Deuffic, Armand Clopeau, Hoël Hotte, Marc Kleinhentz, Cécile Robin, Géraldine Roux, Laure Villate, Philippe Castagnone-Sereno","doi":"10.1186/s13595-024-01233-y","DOIUrl":"https://doi.org/10.1186/s13595-024-01233-y","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Key message</h3><p>The invasive pine wood nematode is a major threat to pine forests worldwide, causing extensive tree mortality. Although scientific knowledge and control measures are continuously improving, important gaps remain. We argue that some key questions, notably related to early detection and pest management, need to be urgently tackled in countries at risk of invasion such as France.</p>","PeriodicalId":7994,"journal":{"name":"Annals of Forest Science","volume":"234 1","pages":""},"PeriodicalIF":3.0,"publicationDate":"2024-03-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140316816","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Dynamic height growth models for highly productive pedunculate oak (Quercus robur L.) stands: explicit mapping of site index classification in Serbia","authors":"Marko Kazimirović, Branko Stajić, Nenad Petrović, Janko Ljubičić, Olivera Košanin, Marc Hanewinkel, Dominik Sperlich","doi":"10.1186/s13595-024-01231-0","DOIUrl":"https://doi.org/10.1186/s13595-024-01231-0","url":null,"abstract":"&lt;h3 data-test=\"abstract-sub-heading\"&gt;Key message&lt;/h3&gt;&lt;p&gt;We applied the generalized algebraic difference approach (GADA) to develop dynamic models of height growth for pedunculate oak (&lt;i&gt;Quercus robur&lt;/i&gt; L.) in Serbia. According to the dominant heights, the studied region comprises some of Europe’s most productive sites for pedunculate oak. Therein, we have generated a map showing the current site index class of stands. Such a map could be used to enhance forest management and evaluate climate change impacts.&lt;/p&gt;&lt;h3 data-test=\"abstract-sub-heading\"&gt;Context&lt;/h3&gt;&lt;p&gt;Although sustainable forest management requires reliable prediction of forest site productivity, such indicators are currently unavailable for pedunculate oak sites in Serbia. The site index (SI) curves represent the most commonly used indirect scale for site productivity classification. The dynamic equations derived by the Generalized Algebraic Difference Approach (GADA) are the state-of-the-art approach in growth modeling, but they have not been widely applied for studying the height dynamics of pedunculate oak.&lt;/p&gt;&lt;h3 data-test=\"abstract-sub-heading\"&gt;Aims&lt;/h3&gt;&lt;p&gt;The main objectives of this study were to develop the first dynamic site index curves for pedunculate oak in Serbia and subsequently to provide stand-level maps with predicted site indices.&lt;/p&gt;&lt;h3 data-test=\"abstract-sub-heading\"&gt;Methods&lt;/h3&gt;&lt;p&gt;We have tested five flexible polymorphic equations with variable asymptotes derived by the GADA approach. Models were calibrated using artificially established growth trajectories obtained from 3636 detailed temporary sample plots. The selection of the most suitable model was accomplished according to (1) quantitative measures of goodness of fit, (2) the analysis of residual scattering, and (3) the biological plausibility of obtained height growth curves.&lt;/p&gt;&lt;h3 data-test=\"abstract-sub-heading\"&gt;Results&lt;/h3&gt;&lt;p&gt;After correcting the error terms with a continuous first-order autoregressive structure and conducting a three-stage performance analysis, the GADA dynamic site index model derived from the Hossfeld base equation shows the best overall properties. Insight into the oscillations of relative error suggested that 100 years is the most suitable age for site index referencing. Comparison with existing height growth models revealed greater flexibility and a considerably better representation of the height growth dynamic of pedunculate oak in the studied region. Additionally, we have produced a spatially explicit map showing the expected SI&lt;sub&gt;100&lt;/sub&gt; for 1907 stands with pedunculate oak within 22 management units.&lt;/p&gt;&lt;h3 data-test=\"abstract-sub-heading\"&gt;Conclusion&lt;/h3&gt;&lt;p&gt;Dynamic SI-curves based on GADA will serve forest practitioners to update management plans and serve as a reference point for benchmarking the impact of climate change and for developing adaptation strategies. The utilized approach allowed unbiased estimation of SI&lt;sub&gt;100&lt;/sub&gt; across all age classes so that the resu","PeriodicalId":7994,"journal":{"name":"Annals of Forest Science","volume":"158 1","pages":""},"PeriodicalIF":3.0,"publicationDate":"2024-03-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140302547","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Oak leaf morphology may be more strongly shaped by climate than by phylogeny","authors":"","doi":"10.1186/s13595-024-01232-z","DOIUrl":"https://doi.org/10.1186/s13595-024-01232-z","url":null,"abstract":"<h3>Abstract</h3> <span> <h3>Key message</h3> <p>Despite been grown under the same climate, oak species are able to correlate with looser, but still identifiable, leaf morphological syndromes, composed by morphological traits with an ecological role in their respective macroclimates.</p> </span> <span> <h3>Context</h3> <p>Environmental restrictions imposed by climate have been shown to modulate leaf morphology. A reduction of leaf area in hot and dry climates reduces overheating because of a thinner boundary layer. Lobed shapes enhance hydraulic conductivity and faster cooling. Elongated leaves drain more quickly under high precipitation. Trichomes may help to reduce the effects of excessive sun exposure in hot and dry environments. Leaf mass per area (LMA) increases in stressful environments.</p> </span> <span> <h3>Aim</h3> <p>To assess the influence of global climate and clade on oak leaf syndromes comprising morphological traits with ecological roles.</p> </span> <span> <h3>Methods</h3> <p>We analyzed seven morphological traits in 141 oak species grown in a botanical garden, characterized into five macroclimates, and explored the partial effects of clade and climate.</p> </span> <span> <h3>Results</h3> <p>We found significant associations between macroclimate and every morphological trait measured. Temperate species tend to have large, obovate, lobed, malacophyllous leaves. Species occurring in dry habitats usually present small, rounded, pubescent, sclerophyllous leaves. Warm and wet climates induce the development of slender, lanceolate, glabrous leaves with an acuminate apex.</p> </span> <span> <h3>Conclusion</h3> <p>The functional roles of the different morphological traits are partially confirmed in genus <em>Quercus</em> as a response to the different macroclimates, where different leaf syndromes can be distinguished.</p> </span>","PeriodicalId":7994,"journal":{"name":"Annals of Forest Science","volume":"25 1","pages":""},"PeriodicalIF":3.0,"publicationDate":"2024-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140151601","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Elevation affects both the occurrence of ungulate browsing and its effect on tree seedling growth for four major tree species in European mountain forests","authors":"Marianne Bernard, Julien Barrere, Xavier Morin, Sonia Saïd, Vincent Boulanger, Elena Granda, Raquel Benavides, Hervé Jactel, Marco Heurich, Sonia G. Rabasa, Fernando Valladares, Georges Kunstler","doi":"10.1186/s13595-024-01226-x","DOIUrl":"https://doi.org/10.1186/s13595-024-01226-x","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Key message</h3><p>In European mountain forests, the growth of silver fir (<i>Abies alba</i> Mill.), sycamore maple (<i>Acer pseudoplatanus</i> L.), European beech (<i>Fagus sylvatica</i> L.) and Norway spruce (<i>Picea abies</i> (L.) H. Karst.) seedlings is more strongly affected by ungulate browsing than by elevation. But, the constraint exerted by ungulates, in particular the probability for seedlings to be browsed, increases with elevation for most species.</p><h3 data-test=\"abstract-sub-heading\">Context</h3><p>While concerns about mountain forest regeneration rise due to their high vulnerability to climate change, the increase in wild ungulate populations and the expansion of their range in the last decades exert an additional constraint on the survival and growth of young trees. Understanding how this constraint can vary with elevation is thus a key to assess the consequences of this population increase for the regeneration of mountain forests.</p><h3 data-test=\"abstract-sub-heading\">Aims</h3><p>In this study, we investigate the effect of elevation on (i) the occurrence of browsing for seedlings and on (ii) the reduction in seedling growth induced by ungulate browsing.</p><h3 data-test=\"abstract-sub-heading\">Methods</h3><p>We monitored height growth and browsing occurrence on silver fir, sycamore maple, European beech and Norway spruce seedlings across seven elevation gradients (from 400 to 2013 m) located from France to northern Sweden.</p><h3 data-test=\"abstract-sub-heading\">Results</h3><p>Seedlings of the two most palatable species—fir and maple—were more likely to be browsed at high elevation while the opposite effect was observed for spruce. Browsing strongly reduced seedling growth for all species but Norway spruce, while elevation had no direct effect on seedling growth. This browsing-induced growth reduction was stronger at high elevation for fir seedlings.</p><h3 data-test=\"abstract-sub-heading\">Conclusions</h3><p>Browsing is overall a stronger constraint on seedling growth than elevation for four dominant species of European mountain forests. Elevation can, however, affect both browsing probability and the effect of browsing on seedling growth. Our results highlight the importance of taking into account ungulate pressure and its interactive effect with elevation when forecasting the regeneration of mountain forests under a changing climate.</p>","PeriodicalId":7994,"journal":{"name":"Annals of Forest Science","volume":"2016 1","pages":""},"PeriodicalIF":3.0,"publicationDate":"2024-03-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140115890","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Inter-provenance variability and phenotypic plasticity of wood and leaf traits related to hydraulic safety and efficiency in seven European beech (Fagus sylvatica L.) provenances differing in yield","authors":"","doi":"10.1186/s13595-024-01227-w","DOIUrl":"https://doi.org/10.1186/s13595-024-01227-w","url":null,"abstract":"<h3>Abstract</h3> <span> <h3>Key message</h3> <p>Seven European beech provenances differing largely in growth performance were grown at two common garden sites in Germany and Slovakia. The intra-specific variability of most traits was explained more by phenotypic plasticity than inter-provenance variability, and efficiency-related traits showed a higher phenotypic plasticity than safety-related traits.</p> </span> <span> <h3>Context</h3> <p>To maintain climate-resilient future forests, replicated common-garden experiments are suited for developing assisted migration strategies for key tree species.</p> </span> <span> <h3>Aims</h3> <p>We analysed the magnitude of inter-provenance variability and phenotypic plasticity for 12 functional traits of European beech (<em>Fagus sylvatica</em> L.) and analysed whether the climate at the place of origin left an imprint. Moreover, we asked whether growth is unrelated to xylem safety and to what extent the foliar, xylem and growth-related traits are coordinated.</p> </span> <span> <h3>Methods</h3> <p>Terminal branches were collected from 19-year-old and 22-year-old trees of seven European beech provenances planted at two common garden sites in Germany and Slovakia, respectively. Three hydraulic, three wood anatomical and four foliar traits were measured and related to two growth-related variables.</p> </span> <span> <h3>Results</h3> <p>At the two sites, the same pair of provenances showed the highest and lowest growth. Nevertheless, a high degree of phenotypic plasticity was observed, as all traits differed significantly between sites after accounting for provenance effects, with hydraulic safety-related traits showing the lowest and efficiency-related traits the highest plasticity. There was no evidence for inter-provenance variability in xylem embolism resistance (<em>P</em> ₅₀) or the foliar carbon isotope signature (δ¹³C), a proxy for intrinsic water use efficiency (iWUE), and both were unrelated to growth. <em>P</em> ₅₀ was positively correlated with the lumen-to-sapwood area ratio and vessel density.</p> </span> <span> <h3>Conclusions</h3> <p>Because of the lacking trade-off between embolism resistance and growth, highly productive provenances can be selected without reducing the drought tolerance of the branch xylem. However, as xylem safety is only one element of a trees’ drought response, it may be beneficial to select provenances with other more conservative drought adaptations such as smaller vessel lumen areas for increasing xylem safety and small supported total leaf areas for reduction of total transpiration.</p> </span>","PeriodicalId":7994,"journal":{"name":"Annals of Forest Science","volume":"164 1","pages":""},"PeriodicalIF":3.0,"publicationDate":"2024-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140026195","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Canopy gap impacts on soil organic carbon and nutrient dynamic: a meta-analysis","authors":"Ran Tong, Biyong Ji, G. Geoff Wang, Chenyang Lou, Cong Ma, Nianfu Zhu, Wenwen Yuan, Tonggui Wu","doi":"10.1186/s13595-024-01224-z","DOIUrl":"https://doi.org/10.1186/s13595-024-01224-z","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Key message</h3><p>The forest canopy gaps, formed by natural or anthropogenic factors, have been found to reduce soil carbon content and increase nutrient availability. The magnitudes of these effects have been observed to increase with gap age and size, and are largely influenced by changes in temperature, precipitation, and solar radiation.</p><h3 data-test=\"abstract-sub-heading\">Context</h3><p>Local studies have illustrated the influence of canopy gaps on the spatial heterogeneity of soil carbon and nutrients, playing a pivotal role in driving forest regeneration and succession. Nevertheless, it remains largely unknown whether the response of soil carbon and nutrient content to gap formation is consistent across forest ecosystems at global scale.</p><h3 data-test=\"abstract-sub-heading\">Aims</h3><p>The aim of this paper is to assess the homogeneity of the observed responses of soil carbon and nutrients following gap formation among a wide array of forest ecosystems and climatic regions.</p><h3 data-test=\"abstract-sub-heading\">Methods</h3><p>We performed a meta-analysis synthesizing 2127 pairwise observations from 52 published articles to quantify the changes in in soil physical, chemical, and microbial variables resulting from gap creation in natural forests and plantations spanning tropical to boreal regions.</p><h3 data-test=\"abstract-sub-heading\">Results</h3><p>Canopy gaps resulted in significant decrease of soil organic carbon (<i>C</i>_org) and microbial carbon (<i>C</i>_mic). The concentrations of ammonium (NH₄⁺), nitrate (NO₃⁻), and available phosphorus (available P) increased following gap creation. These changes mainly occurred in the growing season and in the mineral soil layer, becoming more pronounced with increasing gap age and size. The change in <i>C</i>_org was negatively regulated by mean annual precipitation, and was associated with the changes in N_t and N_<i>mic</i>. The change in NH₄⁺ was positively regulated by mean annual temperature, and was associated with the changes in available P and oxidoreductases (Ox-EEAs). The model explaining the change in soil carbon content exhibited a higher explanatory power than the one accounting for changes in soil nutrient availability.</p><h3 data-test=\"abstract-sub-heading\">Conclusion</h3><p>The results indicated that forest canopy gaps resulted in a reduction in soil carbon content and an increase in nutrient availability. These findings contribute to a better understanding of the role of small-scale disturbances as drivers of forest ecosystem succession.</p>","PeriodicalId":7994,"journal":{"name":"Annals of Forest Science","volume":"22 1","pages":""},"PeriodicalIF":3.0,"publicationDate":"2024-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140026322","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Wood, knots and bark extractives for oak, beech and Douglas fir: a dataset based on a review of the scientific literature","authors":"Béatrice Richard, Alain Bénard, Stéphane Dumarçay, Francis Colin","doi":"10.1186/s13595-024-01223-0","DOIUrl":"https://doi.org/10.1186/s13595-024-01223-0","url":null,"abstract":"<p>Wood_db-chemistry gathers information on oak, beech and Douglas fir extractives studied between 1950 and 2020. The data can be used by researchers, stakeholders in the forest-wood sector and the chemical industry to make the most of the extractives and their bioactive properties through knowledge of their diversity in the forest resource. Dataset access is at https://doi.org/10.57745/QZYPUA. Associated metadata are available at https://metadata-afs.nancy.inra.fr/geonetwork/srv/fre/catalog.search#/metadata/4f8c07d2-c0f6-4958-8f74-936054a9870a.</p>","PeriodicalId":7994,"journal":{"name":"Annals of Forest Science","volume":"24 1","pages":""},"PeriodicalIF":3.0,"publicationDate":"2024-02-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139925179","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Low persistence of Phytophthora ramorum (Werres, De Cock, and Man in ‘t Veld) in western France after implementation of eradication measures","authors":"","doi":"10.1186/s13595-024-01222-1","DOIUrl":"https://doi.org/10.1186/s13595-024-01222-1","url":null,"abstract":"<h3>Abstract</h3> <span> <h3>Key message</h3> <p>Presence of <em>Phytophthora ramorum</em> (Werres, De Cock, and Man in ‘t Veld<strong>)</strong> in western France was studied after the detection of this invasive pathogen in 2017 in <em>Larix kaempferi</em> (Lamb.) and eradication of the affected stands. <em>P. ramorum</em> was seldom detected in the area of the outbreak in the year following eradication. However, we confirm that <em>P. ramorum</em> can multiply to epidemic level on chestnuts (<em>Castanea sativa</em> Mill.) in the absence of larch (<em>Larix</em> spp.). This represents the major risk in France.</p> </span> <span> <h3>Context</h3> <p><em>Phytophthora ramorum</em> is an invasive oomycete that causes significant damage in the USA and Europe. Although the pathogen has been present in nurseries in France since 2002, the first outbreaks in forest stands were identified in 2017 in plantations of <em>Larix kaempferi</em> in two forests in western France (Saint-Cadou and Hanvec). In order to limit the development of the epidemic, neighboring larch stands were clear-cut.</p> </span> <span> <h3>Aim</h3> <p>This study investigated the presence of <em>P. ramorum</em> in the affected area after the eradication treatment.</p> </span> <span> <h3>Methods</h3> <p>Larch stands located within a 18-km radius of the reported outbreaks were investigated. We also monitored the native woody hosts present in infected clear-cut larch stands and in the vicinity of seven ornamental nurseries that had been infected by <em>P. ramorum</em> on several occasions in the past.</p> </span> <span> <h3>Results</h3> <p>Overall, a very limited presence of <em>P. ramorum</em> was detected in 2018–2021. Two new stands of infected <em>L. kaempferi</em> were found close to the main initial outbreak, in Saint-Cadou and Saint-Rivoal. The pathogen was only detected on rhododendrons and chestnut trees <em>(Castanea sativa Mill.)</em> in the vicinity of the outbreaks. In the Saint-Cadou state Forest, an outbreak of the disease developed in 2019–2021 on chestnut trees even though all the mature larch trees had been felled. <em>P. ramorum</em> was also detected near two of the formerly infected ornamental nurseries, on <em>Castanea sativa</em> and on rhododendrons.</p> </span> <span> <h3>Conclusion</h3> <p>While larches and rhododendrons are uncommon in the forests of north-western France, chestnut trees are present in 21–25% of the forest and therefore represent the major risk for the survival of <em>P. ramorum</em> in the region.</p> </span>","PeriodicalId":7994,"journal":{"name":"Annals of Forest Science","volume":"58 1","pages":""},"PeriodicalIF":3.0,"publicationDate":"2024-02-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139764818","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}