Cold tolerance of black spruce, white spruce, jack pine, and lodgepole pine seedlings at different stages of spring dehardening

Man, Rongzhou; Lu, Pengxin; Dang, Qing-Lai

doi:10.1007/s11056-020-09796-0

Cited by 10 publications

(7 citation statements)

References 27 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The buds of Scots pine therefore have a better ability to survive from rapidly fluctuating temperatures than their other parts. However, minor frost damage in needles and roots may reduce the growth of seedlings in the subsequent year (Lindström 1986;Man et al 2021). Scots pine seedlings have been shown to suffer more from defoliation than Norway spruce (Långström and Hellqkvist 1989), and the strong tendency to deacclimation in Scots pine seedlings can therefore be fatal.…”

Section: Discussionmentioning

confidence: 99%

Comparison of deacclimation and reacclimation of silver birch, Norway spruce and Scots pine seedlings during winter warm and cold spells in Nordic boreal conditions

Luoranen,

Kivimäenpää,

Riikonen

2024

New Forests

View full text Add to dashboard Cite

Climate change means that in many areas in boreal region, the duration and thickness of the winter snow cover is decreasing. Young seedlings are exposed to fluctuating winter temperatures in the absence of protecting snow cover. Responses to winter warm and cold spells were studied with Scots pine (Pinus sylvestris L.), silver birch (Betula pendula Roth.), and Norway spruce (Picea abies (L.) Karts.) container seedlings in Finland. The frost hardiness of whole seedlings and buds was determined for seedlings sampled directly from outdoor overwintering conditions, after 7-day deacclimation (+5 °C; +7 °C in late March) and deacclimation combined with 7-day reacclimation ( − 7 °C) treatments between January and late March. The frost hardiness of buds and whole seedlings in Scots pine was between − 40 and − 30 °C from January to early March. Norway spruces tolerated at least − 50 °C in midwinter, but their frost hardiness in outdoor conditions decreased more rapidly in March than that of Scots pines. Silver birch tolerated − 30 °C in February. During simulated warm spells, the Scots pine and silver birch deacclimated without an ability to reacclimate during simulated cold spells. The buds and whole seedlings of Norway spruces also deacclimated, but they had some ability to reacclimate in February and early March, but not in late March. In Nordic boreal conditions, one-year-old Scots pines and silver birches respond strongly to fluctuating winter temperatures during snowless winters, whereas Norway spruces can tolerate typical winter temperatures in midwinter, but their frost hardiness may reduce during warm spells in March.

show abstract

Section: Discussionmentioning

confidence: 99%

Comparison of deacclimation and reacclimation of silver birch, Norway spruce and Scots pine seedlings during winter warm and cold spells in Nordic boreal conditions

Luoranen,

Kivimäenpää,

Riikonen

2024

New Forests

View full text Add to dashboard Cite

show abstract

“…The temperature range was determined partially by the typical range of regional winter temperatures as well as cold tolerance estimates from other Abies species [22,23]. The freeze test protocol was based on previous work by [45]. Branches were placed in a programmable freezer (Thermotron SM-32-C, Holland, MI, USA), and the temperature was reduced 5 • C h −1 until reaching the target temperature.…”

Section: Display Conditions and Needle Retentionmentioning

confidence: 99%

Changes in Polar Lipid Composition in Balsam Fir during Seasonal Cold Acclimation and Relationship to Needle Abscission

MacDonald,

Lada,

MacDonald

et al. 2023

IJMS

View full text Add to dashboard Cite

Needle abscission in balsam fir has been linked to both cold acclimation and changes in lipid composition. The overall objective of this research is to uncover lipid changes in balsam fir during cold acclimation and link those changes with postharvest abscission. Branches were collected monthly from September to December and were assessed for cold tolerance via membrane leakage and chlorophyll fluorescence changes at −5, −15, −25, −35, and −45 °C. Lipids were extracted and analyzed using mass spectrometry while postharvest needle abscission was determined gravimetrically. Cold tolerance and needle retention each significantly (p < 0.001) improved throughout autumn in balsam fir. There were concurrent increases in DGDG, PC, PG, PE, and PA throughout autumn as well as a decrease in MGDG. Those same lipids were strongly related to cold tolerance, though MGDG had the strongest relationship (R2 = 55.0% and 42.7% from membrane injury and chlorophyll fluorescence, respectively). There was a similar, albeit weaker, relationship between MGDG:DGDG and needle retention (R2 = 24.3%). Generally, a decrease in MGDG:DGDG ratio resulted in better cold tolerance and higher needle retention in balsam fir, possibly due to increased membrane stability. This study confirms the degree of cold acclimation in Nova Scotian balsam fir and presents practical significance to industry by identifying the timing of peak needle retention. It is suggested that MGDG:DGDG might be a beneficial tool for screening balsam fir genotypes with higher needle retention characteristics.

show abstract

“…Relative to spring forcing, the accumulation of winter chilling is more complex and experimentally studied on few species (Chuine et al, 2016;Man et al, 2017). Spring phenology can be also adversely affected by freezing temperatures (Man et al, 2021) or moisture stress that may progressively develop and differentially affect species with differing spring phenology (Zettlemoyer et al, 2019). Interest in the influence of photoperiod on spring phenology is increasing (Körner and Basler, 2010).…”

Section: Factors Influencing Among-species DI Erencesmentioning

confidence: 99%

Spring phenology, phenological response, and growing season length

Chu

Man

Dang

2023

Front. For. Glob. Change

Self Cite

View full text Add to dashboard Cite

Di erential phenological responsesPlant phenology is shifting as a result of global warming (IPCC, 2019). General trends include advanced spring phenology (i.e., earlier budburst and leaf-out) and delayed leaf senescence, leading to an extended leaf-on period and possibly increased growth (Peñuelas et al., 2009;IPCC, 2019;Piao et al., 2019). However, responses vary among species, e.g., those with early spring phenology-referred to here as early season species-often show more pronounced advances in spring phenology (Abu-Asab et al., 2001;Beaubien and Hamann, 2011;Shen et al., 2014) than so called late season species. As global warming progresses, these among-species differences in leaf-on time or green-cover season may increase (Morin et al., 2009;Montgomery et al., 2020), leading to an expectation of possible changes in ecosystem structure and function (Polgar et al., 2014;Primack and Gallinat, 2016).The annual development of plants in boreal and temperate regions is driven by the seasonal cycle of climatic conditions, although species-specific information about these changes is often lacking. Bud set, leaf senescence, and dormancy are induced by shorter daylength and lower temperatures in fall, while spring phenology is controlled primarily by temperatures, i.e., low chilling temperatures in fall and winter for dormancy release and high forcing temperatures for spring growth initiation (Chuine et al., 2016;Piao et al., 2019). As species chilling needs can be fulfilled long before spring arrives (see Figure 1), spring phenology is often not influenced by changes in cumulative winter chilling induced by global warming (

show abstract

Cold tolerance of black spruce, white spruce, jack pine, and lodgepole pine seedlings at different stages of spring dehardening

Cited by 10 publications

References 27 publications

Comparison of deacclimation and reacclimation of silver birch, Norway spruce and Scots pine seedlings during winter warm and cold spells in Nordic boreal conditions

Comparison of deacclimation and reacclimation of silver birch, Norway spruce and Scots pine seedlings during winter warm and cold spells in Nordic boreal conditions

Changes in Polar Lipid Composition in Balsam Fir during Seasonal Cold Acclimation and Relationship to Needle Abscission

Spring phenology, phenological response, and growing season length

Contact Info

Product

Resources

About