How can the shade intolerant Korean pine survive under dense deciduous canopy?

Zhou, Guang‐Jie; Liu, Qijing; Xu, Zhenzhao; Du, Weian; Jiang, Yu; Meng, Shengwang; Zhang, Hua; Qin, Lihou; Shah, Syed Tahir

doi:10.1016/j.foreco.2019.117735

Cited by 29 publications

(22 citation statements)

References 64 publications

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“…But on 9th September, the upper canopy just began to defoliate. Just like researchers found out that the leaf-off time in the spring and autumn provided higher light in the understory than in the summer (Consrabel and Lieffers 1996), and temperature also started to decrease at this time (Zhou et al 2020), which meant that the growing season was coming to an end and plants must be ready for the upcoming cold winter. During heavily shaded time, photosynthesis is also important and chlorophyll is indispensable for photosynthesis (Wang and Grimm 2021).…”

Section: Dynamics Of Light Affect Plant Photosynthetic Responsesmentioning

confidence: 99%

“…And there were signi cant (p < 0.05) correlations between ABA content and PPFD and R:FR in September (Table4). While understory Korean pine may need this leaf-off period to produce more energy(Zhou et al 2020). Proline as another compound related to stress tolerance, accumulated in many plant species in response to environmental stress(Szabados and Savouré 2009), also was found to increase under full light exposure in barley leaves(Klem et al 2019) and our results were consistent with that (Fig.4).Here we just examined NSC concentrations in needles (source), and those in sink tissues (stems, rootsand others) are lacking.…”

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confidence: 99%

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WITHDRAWN: Effects of light intensity and quality on needle physiological and biochemical traits of eighteen-year-old Pinus koraiensis trees adapted long-period to real field environment

Saha

et al. 2022

Preprint

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Regeneration of Korean pine (Pinus koraiensis) has been mostly fraught with failure and light is considered primarily the cause. Considerable experiments concerning it were using seedlings or shaded by black nets or both and thus with conflicting results. Here we investigated the effects of light conditions on eighteen-year-old Korean pines that have been long-period adapted to the under-canopy environment in the field. Photosynthetic pigments, chlorophyll a fluorescence, non-structural carbohydrate metabolism, antioxidant enzyme activity and nutrient concentrations of current-year needles under four light regimes (three understory, one full light, classified by light intensity and quality) were measured. From June to September, light intensity and quality decreased under full light, but understory light conditions got a little better after leaf fall. Photosynthetic pigments content decreased as the light improved, but Car/Chl was the highest in full-light needles. Glucose content and Rubisco activity were all positively correlated with light conditions. APX activity, DPPH scavenging capacity and proline content were all the highest in needles under full light, along with higher NPQ and lower Fv/Fm readings, suggested that full-light Korean pines were under stress and inhibited photosynthesis to some degree. The highest content of ABA in full-light needles in September contrasting with previous results might imply that full light conditions helped trees to adapt to cold earlier than understory ones. This study implied that the understory light during growing season was not always unfavourable, Korean pine trees were capable of living under the canopy of deciduous trees for at least eighteen years.

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Section: Dynamics Of Light Affect Plant Photosynthetic Responsesmentioning

confidence: 99%

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confidence: 99%

WITHDRAWN: Effects of light intensity and quality on needle physiological and biochemical traits of eighteen-year-old Pinus koraiensis trees adapted long-period to real field environment

Saha

et al. 2022

Preprint

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“…Our results show that seed harvesting aggravates the poor natural regeneration of Pinus koraiensis, which generally is restricted by the light availability in Northeast China [5,29,30]. Seed has significantly decreased the natural regeneration of Pinus koraiensis, and the negative effect increases with forest succession.…”

Section: Discussionmentioning

confidence: 75%

“…Although Pinus koraiensis seedlings are shade tolerant, their need for light increases with age [35]. Previous studies have shown that understory light availability limits the growth and survival of Pinus koraiensis seedlings [5,29,30] while thinning from below increases light availability by creating forest gaps, promoting the regeneration of shade-tolerant species such as Pinus koraiensis [5,36,37]. A previous study finds that the low thinning and slash burning treatment enhances initial Spanish black pine seedling recruitments [38].…”

Section: Discussionmentioning

confidence: 99%

Seed Harvesting and Climate Change Interact to Affect the Natural Regeneration of Pinus koraiensis

Sun

et al. 2023

Forests

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The poor natural regeneration of Pinus koraiensis is a key limitation for restoring the primary mixed Pinus koraiensis forests. Seed harvesting and climate change are the important factors that influence the natural regeneration of Pinus koraiensis; however, it is hard to illustrate how, in synergy, they affect its regeneration at the landscape scale. In this study, we coupled an ecosystem process model, LINKAGES, with a forest landscape model, LANDIS PRO, to evaluate how seed harvesting and climate change influenced the natural regeneration of Pinus koraiensis over large temporal and spatial scales. Our results showed that seed harvesting decreased the abundance of Pinus koraiensis juveniles by 1, 14, and 18 stems/ha under the historical climate, and reduced by 1, 17, and 24 stems/ha under the future climate in the short- (years 0–50), medium- (years 60–100), and long-term (years 110–150), respectively. This indicated that seed harvesting intensified the poor regeneration of Pinus koraiensis, irrespective of climate change. Our results suggested that seed harvesting diminished the generation capacity of Pinus koraiensis over the simulation period. Seed harvesting reduced the abundance of Pinus koraiensis at the leading edge and slowed down its shift into high-latitude regions to adapt to climate change. Our results showed that the effect magnitudes of seed harvesting, climate change, their interaction and combination at the short-, medium- and long-term were −61.1%, −78.4%, and −85.7%; 16.5%, 20.9%, and 38.2%; −10.1%, −16.2% and −32.0%; and −54.7%, −73.8%, and −79.5%, respectively. Seed harvesting was a predominant factor throughout the simulation; climate change failed to offset the negative effect of seed harvesting, but the interactive effect between seed harvesting and climate change almost overrode the positive effect of climate change. Seed harvesting, climate change, and their interaction jointly reduced the natural regeneration of Pinus koraiensis. We suggest reducing the intensity of seed harvesting and increasing silvicultural treatments, such as thinning and artificial plantation, to protect and restore the primary mixed Pinus koraiensis forests.

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“…Generally, the photosynthesis rates decrease as light decreases and reduce the NSCs (Xie et al 2018). A positive correlation was found between biomass, NSCs concentration, and survival rates with light availability in shade-intolerant species (Zhou et al 2020). These variations are due to the internal regulation between soluble sugars and starch depending on the adaptive strategies under different environmental scenarios (Dirk et al 1999;Kami et al2011;Xie et al 2018).…”

Section: Introductionmentioning

confidence: 97%

Effect of low light condition on the growth and carbon use of legume seedlings

Qurani

Yoshimura

2021

Asian J For

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Abstract. Qur’ani CG, Yoshimura K. 2020. Effect of low light condition on the growth and carbon use of legume seedlings. Asian J For 5: 51-59. Plants exhibit flexible changes of morphological and physiological traits to adapt to low light environments. However, the interaction between growth, functional traits among plant organs, and non-structural carbohydrates (NSCs) concentration to determine the adaptation strategies remain unclear. Three legume- and shade-intolerant species, Robinia pseudoacacia (L.), Falcataria moluccana (Miq.), and Acacia mangium (Willd.) were grown under full light (open) and 15% of light availability (shade). Changes in shoot length, diameter, organ respiration rates, and NSCs concentration were observed throughout 6 months of the growing period. Only R. pseudoacacia developed longer (13.67%) and bigger (26.61%) shoots in open sites than shade sites. Specific Leaf Area (SLA) and Specific Root Area (SRA) were bigger in shade than in open site for all species (SLA=±2 times; SRA=±1-4 times). Dry mass, respiration rates, and NSCs in R. pseudoacacia were allocated more to the roots but were more to the leaves in F. moluccana and A. mangium. Based on the interactions among morphological and physiological parameters, our results show that different legume species develop specific growth, morphological traits and carbon use (NSCs) under shade conditions, which exhibit flexibility changes as part of adaptation strategy to the low-light environment.

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How can the shade intolerant Korean pine survive under dense deciduous canopy?

Cited by 29 publications

References 64 publications

WITHDRAWN: Effects of light intensity and quality on needle physiological and biochemical traits of eighteen-year-old Pinus koraiensis trees adapted long-period to real field environment

WITHDRAWN: Effects of light intensity and quality on needle physiological and biochemical traits of eighteen-year-old Pinus koraiensis trees adapted long-period to real field environment

Seed Harvesting and Climate Change Interact to Affect the Natural Regeneration of Pinus koraiensis

Effect of low light condition on the growth and carbon use of legume seedlings

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