Drought stress limits the geographic ranges of two tree species via different physiological mechanisms

2015 ◽  
Vol 22 (3) ◽  
pp. 1029-1045 ◽  
Author(s):  
Leander D. L. Anderegg ◽  
Janneke HilleRisLambers
Keyword(s):  
Drought Stress ◽  
Tree Species ◽  
Physiological Mechanisms ◽  
Geographic Ranges

Impact of Drought Stress on Forest Trees – A Review

2019 ◽  
Vol 42 (2) ◽  
pp. 185-190
Author(s):  
Shephali Sachan ◽  
◽  
Avinash Jain ◽  
Keyword(s):  
Drought Stress ◽  
Water Resources ◽  
Tree Species ◽  
Forest Trees ◽  
Physiological Processes ◽  
Dangerous Situation ◽  
Time Period ◽  
Capacity Level ◽  
Abrupt Changes ◽  
The Impact

Drought stress is creating dangerous situation worldwide. The impact of stress is not only the deficiency of water but it also leads to the deficiency and losses of everything which are linked to the water resources directly or indirectly. Drought stress disturbs the normal biochemical, molecular and physiological processes, affecting the morphology of plant. As a result the plant is either unable to live on abrupt changes or learn to avoid/tolerate the variation in the environment. The results vary species to species depending on genotype, frequency and time period of drought stress. There is need of screening various tree species for getting information related to their ability and capacity level of susceptibility, tolerance and avoidance behaviour with the further goal of their plantation in the various nurseries in order to rehabilitate the drought prone areas, wastelands and to increase intangible and tangible benefits.

scholarly journals Root Traits Determine Variation in Nonstructural Carbohydrates (NSCs) under Different Drought Intensities and Soil Substrates in Three Temperate Tree Species

Forests ◽  
2020 ◽  
Vol 11 (4) ◽  
pp. 415 ◽  
Author(s):  
Li Ji ◽  
Khan Attaullah ◽  
Jun Wang ◽  
Dapao Yu ◽  
Yuchun Yang ◽  
...  
Keyword(s):  
Drought Stress ◽  
Environmental Conditions ◽  
Tree Species ◽  
Soluble Sugar ◽  
Specific Root Length ◽  
Root Traits ◽  
Root Tip ◽  
Root Surface Area ◽  
Nonstructural Carbohydrates ◽  
Soil Substrates

Nonstructural carbohydrates (NSCs) are a key factor in the physiological regulation of plants and can reflect buffering capacity of plants under diverse environmental conditions. The effects of diverse environmental conditions on plant NSCs and tissue or organ scales have been thoroughly studied, but their effects on fine root (root diameter < 2 mm) NSC concentrations are still not completely understood. Our aims were to explore the synergistic fluctuations in root traits and NSC concentrations under diverse environmental conditions. This study was conducted on two-year-old temperate seedling tree species (Juglans mandshurica Maxim., Fraxinus mandshurica Rupr., and Phellodendron amurense Rupr.) with different drought intensities and soil substrates. The specific root length (SRL) and specific root surface area (SRA) were significantly affected by drought intensities and soil substrates, while the root tissue density (RTD) and average diameter (AD) were not significantly affected by water intensities and soil substrates in all three species. The root C, N, and P concentration did not change according to drought stress but were significantly affected by the soil substrates in all three species. Similarly, the soluble sugar (SS) and starch (ST) concentrations were significantly affected by both the drought stress and the soil substrates in all three species. The AD explained 6.8% of the total variations in soluble sugar, while the SRL explains 32.1% of the total variation in starch. The root tip C, N, and P concentrations were not significantly correlated with NSCs under different treatments. The total variations in root tip morphology, chemistry, and NSC concentrations are greater among species than compared to different drought intensities and soil substrates. However, the root NSC concentrations were closely related to root morphological traits (SRL and AD) rather than chemical traits. On the basis of different soil resources, the species with thinner diameters have higher SS concentrations, while those of a thicker diameter have higher ST concentrations.

Physiological and biochemical responses to different soil drought stress in three tree species

2013 ◽  
Vol 33 (12) ◽  
pp. 3648-3656 ◽  
Author(s):  
吴芹 WU Qin ◽  
张光灿 ZHANG Guangcan ◽  
裴斌 PEI Bin ◽  
方立东 FANG Lidong
Keyword(s):  
Drought Stress ◽  
Tree Species ◽  
Soil Drought ◽  
Biochemical Responses ◽  
Physiological And Biochemical

scholarly journals Genotypic variation rather than ploidy level shapes trait expression in a foundation tree species under drought stress and defoliation

2021 ◽  
Author(s):  
Michael Eisenring ◽  
Richard Lindroth ◽  
Noreen Giezendanner ◽  
Karen Mock ◽  
Eric Kruger
Keyword(s):  
Genetic Diversity ◽  
Drought Stress ◽  
Populus Tremuloides ◽  
Ploidy Level ◽  
Tree Species ◽  
Field Experiments ◽  
Genotypic Variation ◽  
Genotypic Differences ◽  
Ploidy Levels ◽  
Tree Survival

With advancing climate change, tree survival increasingly depends on mechanisms that facilitate coping with multiple environmental stressors. At the population level, genetic diversity is a key determinant of a tree species’ capacity to deal with stress. However, little is known about the relative relevance of the different components of genetic diversity for shaping tree stress responses. We compared how two components of genetic diversity, genotypic variation and ploidy level, shape growth, phytochemical, and physiological traits of Populus tremuloides, under environmental stress. In two field experiments we exposed eight diploid and eight triploid aspen genotypes to individual and interactive drought stress and defoliation treatments. We found that: 1) Genotypic differences were critical for explaining variation of most of functional traits and their responses to stress. 2) Ploidy levels generally played a subordinate role for shaping traits, as they were typically obscured by genotypic differences. 3) As an exception to the second finding, we found that triploid trees expressed higher levels of foliar defenses, photosynthesis, and rubisco activity under well-watered conditions, and displayed greater drought resilience than diploids. This research demonstrates that the simultaneous study of multiple sources of genetic diversity is important for understanding how trees will respond to environmental change.

Testing the limits of plant drought stress and subsequent recovery in four provenances of a widely distributed subtropical tree species

2022 ◽  
Author(s):  
Honglang Duan ◽  
Víctor Resco de Dios ◽  
Defu Wang ◽  
Nan Zhao ◽  
Guomin Huang ◽  
...  
Keyword(s):  
Drought Stress ◽  
Tree Species ◽  
Subsequent Recovery

scholarly journals High Recovery of Saplings after Severe Drought in Temperate Deciduous Forests

Forests ◽  
2020 ◽  
Vol 11 (5) ◽  
pp. 546 ◽  
Author(s):  
Mirela Beloiu ◽  
Reinhold Stahlmann ◽  
Carl Beierkuhnlein
Keyword(s):  
Drought Stress ◽  
Species Diversity ◽  
Tree Species ◽  
Management Strategies ◽  
Field Measurements ◽  
Species Interaction ◽  
Severe Drought ◽  
Crown Defoliation ◽  
Species Specific ◽  
The Impact

Drought episodes are predicted to increase their intensity and frequency globally, which will have a particular impact on forest vitality, productivity, and species distribution. However, the impact of tree species interaction on forest vulnerability to drought is not yet clear. This study aims to assess how deciduous saplings react to drought and whether tree species diversity can buffer the impact of drought stress on tree saplings. Based on field measurements of crown defoliation and species diversity, vulnerability, drought recovery, and species interaction were analyzed. Fieldwork was carried out in Central Eastern Germany in 2018 during the vegetation season and repeated in 2019. Ten random saplings were measured in each of the 218 plots (15 × 15 m) with 2051 saplings in total out of 41 tree species. We found that 65% of the saplings experienced defoliation during the drought of 2018, of which up to 13% showed complete defoliation. At the species level, Fagus sylvatica L. and Betula pendula Roth. saplings were less affected (<55%), whereas Carpinus betulus L., Sorbus aucuparia L., and Frangula alnus Mill. saplings were the most affected (≥85%). One year later, in 2019, C. betulus and S. aucuparia had a faster recovery rate than F. sylvatica, B. pendula, Quercus spp., and Crataegus spp. (p < 0.001). Furthermore, we showed that forest stands with high sapling species diversity had a reduced vitality under drought stress (p < 0.001), indicating a higher competition for resources. The study provides evidence that F. sylvatica saplings can withstand and survive to persistent drought. Species-specific responses to drought are essential to be considered for implementing adaptive forest management strategies to mitigate the impact of climate change.

Growth and physiological responses to ozone and mild drought stress of tree species with different ecological requirements

Trees ◽  
2010 ◽  
Vol 24 (4) ◽  
pp. 695-704 ◽  
Author(s):  
Martina Pollastrini ◽  
Rosanna Desotgiu ◽  
Chiara Cascio ◽  
Filippo Bussotti ◽  
Paolo Cherubini ◽  
...  
Keyword(s):  
Drought Stress ◽  
Tree Species ◽  
Physiological Responses ◽  
Ecological Requirements ◽  
Mild Drought

scholarly journals The potential of fruit trees to enhance converted habitats for migrating birds in southern Mexico

2007 ◽  
Vol 17 (1) ◽  
pp. 45-61 ◽  
Author(s):  
MERCEDES S. FOSTER
Keyword(s):  
Tree Species ◽  
Bird Species ◽  
Fruit Trees ◽  
Forest Tree ◽  
Migration Routes ◽  
Southern Mexico ◽  
Geographic Ranges ◽  
Mature Forest ◽  
Migrant Birds ◽  
Migrating Birds

Migration routes used by Nearctic migrant birds can cover great distances; they also differ among species, within species, and between years and seasons. As a result, migration routes for an entire migratory avifauna can encompass broad geographic areas, making it impossible to protect continuous stretches of habitat sufficient to connect the wintering and breeding grounds for most species. Consequently, ways to enhance habitats converted for human use (i.e. for pasture, crop cultivation, human settlement) as stopover sites for migrants are especially important. Shelterbelts around pastures and fields, if planted with species targeted to support migrant (and resident) bird species that naturally occupy mature forest habitats and that are at least partially frugivorous, could be a powerful enhancement tool for such species, if the birds will enter the converted areas to feed. I tested this approach for Nearctic migrant birds during the spring migration through an area in Chiapas, Mexico. Mature forest tree species whose fruits are eaten by birds were surveyed. Based on life form, crop size and fruit characteristics, I selected three tree species for study: Cymbopetalum mayanum (Annonaceae), Bursera simaruba (Burseraceae) and Trophis racemosa (Moraceae). I compared the use of fruits of these species by migrants and residents in forest with their use of the fruits of isolated individuals of the same species in pasture and cropland. All three plant species were useful for enhancing converted habitats for forest-occupying spring migrants, although species differed in the degree to which they entered disturbed areas to feed on the fruits. These tree species could probably enhance habitats for migrants at sites throughout the natural geographic ranges of the plants; in other geographic areas for other target bird groups, other tree species might be more appropriate.

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