Ecophysiology and Plasticity of Wood and Phloem Formation

Deslauriers, Annie; Fonti, Patrick; Rossi, Sergio; Rathgeber, Cyrille; Gričar, Jožica

doi:10.1007/978-3-319-61669-8_2

Cited by 39 publications

(31 citation statements)

References 140 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In subtropical climates, the dynamic of stem radial growth is limited by the double climatic stress of the mild winters and hot summers [43,44]. In this study, the stem radial growth of Taiwan pine started around mid-March in both years, but the ending date ranged from mid-October to late November.…”

Section: Seasonal Dynamics Of Stem Radial Growthmentioning

confidence: 67%

Seasonal Dynamics of Stem Radial Increment of Pinus taiwanensis Hayata and Its Response to Environmental Factors in the Lushan Mountains, Southeastern China

Liu

Nie

Wen

2018

Forests

View full text Add to dashboard Cite

Seasonal radial-increment records can help to elucidate how tree growth responds to climate seasonality. Such knowledge is critical for understanding the complex growth-climate relationships in subtropical China. We hypothesize that under subtropical monsoon climate characterized by mild winters and hot summers, summer drought constrains stem radial increment, which generally results in growth-limiting factors switching from temperatures in spring and early summer to precipitation in summer and autumn. Here, we monitored intra-annual dynamics of stem radial increment with band dendrometers in a montane stand of Taiwan pine (Pinus taiwanensis Hayata) from Lushan Mountains for two consecutive years (2016-2017). A pronounced bimodal seasonal pattern of stem radial increment was observed in 2016. However, it was less clear in 2017 when late-summer rainfall events occurred in early August. Changing growth-climate relationships were detected throughout the two growing seasons. Stem increments were consistently positively correlated with temperatures before early July, whereas the growth-temperature dependency was gradually weakened and more variable after early July. Conversely, stem increments were significantly correlated with precipitation and soil moisture since early July, indicating that moisture variables were the main factor limiting stem increments in dry period. More precipitation was received in the dry period (July-November) of 2017 as compared with the year 2016, which favoured a wider annual increment in 2017, although growing-season temperature and precipitation was similar between years. Our study suggests a seasonal shift in growth-limiting factors in subtropical forests, which should be explicitly considered in forecasting responses of tree growth to climatic warming.

show abstract

Section: Seasonal Dynamics Of Stem Radial Growthmentioning

confidence: 67%

Seasonal Dynamics of Stem Radial Increment of Pinus taiwanensis Hayata and Its Response to Environmental Factors in the Lushan Mountains, Southeastern China

Liu

Nie

Wen

2018

Forests

View full text Add to dashboard Cite

show abstract

“…Studies on the dynamics of wood formation are usually performed to better understand how the environment affects wood structure, and thus, many studies focused on comparison between species (Rossi et al 2008a) or along elevation (Moser et al 2010;Prislan et al 2011), or were conducted in experimental settings by controlling temperature (Fonti et al 2013;Gričar et al 2006Gričar et al , 2007 or moisture (Eilmann et al 2009;Galle et al 2010). These studies helped to quantify the plasticity of wood formation (Deslauriers et al 2017) and showed how environmental conditions impact physiological processes (i.e., the initiation, termination, rate, and extent of growth, Lempereur et al 2015) and the resulting anatomical structure . Such studies also confirmed that temperature usually induces the onset of growing season and thus directly influences the amount of wood annually produced (Cocozza et al 2016;Rossi et al 2010).…”

Section: Discussionmentioning

confidence: 99%

Xylogenesis of compression and opposite wood in mountain pine at a Mediterranean treeline

Palombo

Fonti

Lasserre

et al. 2018

Annals of Forest Science

Self Cite

View full text Add to dashboard Cite

& Key message Comparisons between compression and opposite wood formation in prostrating Pinus mugo indicate that the secondary meristem can produce more tracheids with thicker walls by also increasing the number of contemporaneously differentiating cells, rather than only increasing the duration or the rate of cell formation. & Context Although cambium tissues within a stem experience the same climatic conditions, the resulting wood structure and properties can strongly differ. Assessing how meristem differently regulates wood formation to achieve different anatomical properties can help understanding the mechanisms of response and their plasticity. & Aims We monitored the formation of compression (CW) and opposite (OW) wood within the same stems to understand whether achieved differences in wood structure are caused by modifications in the process of cell formation. & Methods We collected weekly microcores of compression and opposite wood from the curved stem of ten treeline prostrating mountain pines (Pinus mugo Turra ssp. mugo) at the Majella massif in Central Italy. & Results Results indicate that cambium formed approximately 1.5 times more cells in CW than OW, despite that CW cell differentiation only extended 2 weeks longer and the residence time of CW cells in the wall-thickening phase was only 20% longer. Differences in their formation were thus mainly related to both the rates and the width of the enlarging and wall-thickening zones (i.e., the number of cells simultaneously under differentiation) and less to duration of cell formation. & Conclusion We conclude that to achieve such a different wood structures, the efficiency of the secondary meristem, in addition of altered rate of cell division and differentiation, can also modify the width of the developing zones. Thus, deciphering what rules this width is important to link environmental conditions with productivity.

show abstract

“…Most of the TreMs examined in our simplified approach were saproxylic, such as some types of decaying wood, or might be a starting point for saproxylic habitats, such as some dendrotelms and some root-buttress concavities. Hence, the observed differences in the TreMs may have been a function of the tree species or of ecophysiological differences between the beech trees in the Uholka and Hyrcanian forests [49,50]. Different ecophysiological adaptions, such as drought tolerance, of beech trees in the two study areas could lead to differences in the amount of crown deadwood [49].…”

Section: Trem Variation Due To Tree Speciesmentioning

confidence: 98%

A Comparison of the Formation Rates and Composition of Tree-Related Microhabitats in Beech-Dominated Primeval Carpathian and Hyrcanian Forests

Jahed

Kavousi

Farashiani

et al. 2020

Forests

View full text Add to dashboard Cite

Primeval forests in the temperate zone exist only as a few remnants, but theses serve as important reference areas for conservation. As key habitats, tree-related microhabitats (TreMs) are of intense interest to forest ecologists, but little is known about their natural composition and dynamics in different tree species. Beech forms a major part of the temperate forests that extend from Europe, home to European beech Fagus sylvatica L. (Fs), eastward to Iran, where Oriental beech Fagus orientalis Lipsky (Fo) is the dominant species. In this study, we compared TreMs in primeval forests of both species, using data from Fo growing in 25 inventory plots throughout the Hyrcanian forest belt in Iran and from Fs growing in a 9 ha permanent plot in the Uholka Forest of Ukraine. TreMs based on 47 types and 11 subgroups were recorded. Beech trees in the Hyrcanian forest had a higher mean diameter at breast height (dbh) than beech trees in Uholka and contained twice as many TreMs per hectare. Although the mean richness of TreMs per TreM bearing tree was similar in the two species, on the basis of the comparison single trees in two groups (n = 405 vs. 2251), the composition of the TreMs clearly differed, as the proportions of rot holes, root-buttress concavities, and crown deadwood were higher in the Hyrcanian Forest, and those of bark losses, exposed heartwood, and burrs and cankers higher in Uholka Forest. Estimates of TreMs dynamics based on dbh and using Weibull models showed a significantly faster cumulative increase of TreMs in Fo, in which saturation occurred already in trees with a dbh of 70–80 cm. By contrast, the increase in TreMs in Fs was continuous. In both species, the probability density was highest at a dbh of about 30 cm, but was twice as high in Fo. Because of limitations of our study design, the reason behind observed differences of TreM formation and composition between regions remains unclear, as it could be either result of the tree species or the environment, or their interaction. However, the observed differences were more likely the result of differences in the environment than in the two tree species. Nevertheless, our findings demonstrate that the Hyrcanian Forest, recently designated as a natural heritage site in Iran, is unique, not only as a tertiary relict or due to its endemic trees, herbs and arthropods, but also because of its TreMs, which form a distinct and rich habitat for associated taxa, including endemic saproxylic species.

show abstract

Ecophysiology and Plasticity of Wood and Phloem Formation

Cited by 39 publications

References 140 publications

Seasonal Dynamics of Stem Radial Increment of Pinus taiwanensis Hayata and Its Response to Environmental Factors in the Lushan Mountains, Southeastern China

Seasonal Dynamics of Stem Radial Increment of Pinus taiwanensis Hayata and Its Response to Environmental Factors in the Lushan Mountains, Southeastern China

Xylogenesis of compression and opposite wood in mountain pine at a Mediterranean treeline

A Comparison of the Formation Rates and Composition of Tree-Related Microhabitats in Beech-Dominated Primeval Carpathian and Hyrcanian Forests

Contact Info

Product

Resources

About