Leaf-branch vulnerability segmentation occurs all year round for three temperate evergreen tree species

Li, Zhimin; Wang, Chuankuan; Luo, Dandan; Hou, Enqing; Ibrahim, Muhammed Mustapha

doi:10.1016/j.plaphy.2023.107658

Cited by 5 publications

(2 citation statements)

References 60 publications

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“…Furthermore, it seemed that the PLC differed among organs at least under ambient condition (Figure 2). Hence, hydraulic segmentation confirmed in some studies (Levionnois et al, 2020;Li et al, 2023) might exist between leaves and branches of Moso bamboo.…”

Section: The Percentage Loss Of Xylem Hydraulic Conductivity To Summe...supporting

confidence: 62%

Different hydraulic and photosynthetic responses to summer drought between newly sprouted and established Moso bamboo culms

Zhang,

Tong,

Fang

et al. 2023

Front. Plant Sci.

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The subtropical regions in China are prone to recurrent summer droughts induced by the Western Pacific Subtropical High-Pressure, which has induced the death of tens of millions of culms of Moso bamboo (Phyllostachys edulis (Carriere) J. Houzeau), a widely distributed giant bamboo with high economic and ecological values. In the future, the intensity and frequency of the summer drought are projected to increase in these areas due to global climate change, which may lead to significant age-specific mortality of Moso bamboo. So far, it is still unclear about the age-specific response mechanisms of hydraulic traits and carbon balance of Moso bamboo when it is suffering to an ongoing summer drought. This study aimed to investigate the hydraulic and photosynthetic responses of newly sprouted (1 year old) and established (2-5 years old) culms of Moso bamboo to summer drought, which was manipulated by throughfall reduction in Lin’an of Zhejiang. The results showed that both newly sprouted and established culms had a gradually weakening hydraulic conductivity and photosynthesis during the whole drought process. In the early stage of the manipulated drought, the established culms had more loss of hydraulic conductivity than the newly sprouted culms. However, the newly sprouted culms had significant more loss of hydraulic conductivity and lower photosynthetic rates and stomatal conductance in the middle and late stages of the manipulated drought. The results suggest that the newly sprouted culms were more susceptible to summer drought than established culms due to the combined effects of hydraulic damage and photosynthetic restriction, explaining why the newly sprouted culms have higher mortality than elder culms when subjected to extreme drought. These findings provided insights into the mechanisms of Moso bamboo’s age-specific drought-induced mortality, which will help for the anti-drought management of bamboo.

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Section: The Percentage Loss Of Xylem Hydraulic Conductivity To Summe...supporting

confidence: 62%

Different hydraulic and photosynthetic responses to summer drought between newly sprouted and established Moso bamboo culms

Zhang,

Tong,

Fang

et al. 2023

Front. Plant Sci.

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“…An increasing number of studies have found that the distribution of P. koraiensis is closely related to its growth and development, namely, whether it migrates with latitude or altitude (Liu et al, 2016;Petrenko et al, 2022). P. koraiensis is a tree species that is distributed in humid temperate regions and that has strong cold resistance, and there is no frost damage to old or young trees during the winter in the Lesser Khingan Mountains at −30 • C (Wang X. P. et al, 2006;Li et al, 2023). Therefore, P. koraiensis has a certain degree of plasticity in temperature requirements under humid conditions, with a greater adaptability to temperature (Yuan et al, 2021;Song et al, 2023).…”

Section: Discussionmentioning

confidence: 99%

Projecting the future redistribution of Pinus koraiensis (Pinaceae: Pinoideae: Pinus) in China using machine learning

Chen,

Xiao,

Deng

et al. 2024

Front. For. Glob. Change

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IntroductionAs an important coniferous tree in northeast China, Pinus koraiensis not only maintains the stability of the forest ecosystem at high latitudes but also plays a crucial role in regional socioeconomic development. With the intensification of climate change in recent years, the stability of P. koraiensis habitats is constantly disturbed by external uncertain environmental factors, which greatly affects the geographical distribution of P. koraiensis. However, its geographical distribution is still unclear, which greatly hinders further understanding of the ecological process of P. koraiensis. Consequently, it is particularly important to explore the potential distribution and migration of P. koraiensis during several critical periods.MethodsRandom forest (RF) was used to establish the redistribution of P. koraiensis.ResultsThe results showed that temperature seasonality and precipitation in the coldest quarter were the key factors limiting the current distribution of P. koraiensis. Currently, P. koraiensis is mainly distributed in the Lesser Khingan Mountains and Changbai Mountains, with a total suitable area of ~4.59 × 105 km2. In the past, the historical distribution of P. koraiensis during the LIG period was basically consistent with the current distribution range, but its distribution range was more complete. In the LGM period, the suitable distribution of P. koraiensis became fragmented, especially at the connection between the Lesser Khingan Mountains and the Changbai Mountains. Under future climate scenarios, the suitable distribution of P. koraiensis is projected to increase, while the highly suitable distribution will be reduced. The dramatically worrying change is that the suitable habitats of P. koraiensis are gradually breaking and separating in the junction zone between the Lesser Khingan Mountains and Changbai Mountains, which will cause the ecological corridor to break. The shifts in the distribution centroid indicated that the P. koraiensis population will migrate northward.DiscussionHowever, it remains to be verified whether long-distance migration can be achieved without human assistance. Our results can provide some solutions for protection and management strategies for P. koraiensis populations and the impact of climate change, shedding light on the effectiveness of management responses.

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Adaptive strategies to freeze-thaw cycles in branch hydraulics of tree species coexisting in a temperate forest

Li,

Luo,

Ibrahim

et al. 2024

Plant Physiology and Biochemistry

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Leaf-branch vulnerability segmentation occurs all year round for three temperate evergreen tree species

Cited by 5 publications

References 60 publications

Different hydraulic and photosynthetic responses to summer drought between newly sprouted and established Moso bamboo culms

Different hydraulic and photosynthetic responses to summer drought between newly sprouted and established Moso bamboo culms

Projecting the future redistribution of Pinus koraiensis (Pinaceae: Pinoideae: Pinus) in China using machine learning

Adaptive strategies to freeze-thaw cycles in branch hydraulics of tree species coexisting in a temperate forest

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