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

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

Two aquaporins of Jatropha are regulated differentially during drought stress and subsequent recovery

2013 ◽  
Vol 170 (11) ◽  
pp. 1028-1038 ◽  
Author(s):  
Ha-Young Jang ◽  
Seong-Wook Yang ◽  
John E. Carlson ◽  
Yang-Gyu Ku ◽  
Sung-Ju Ahn
Keyword(s):  
Drought Stress ◽  
Subsequent Recovery

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.

Cytokinin Function in Drought Stress Response and Subsequent Recovery

2007 ◽  
pp. 171-174 ◽  
Author(s):  
M. Novakova ◽  
P. Dobrev ◽  
V. Motyka ◽  
A. Gaudinova ◽  
J. Malbeck ◽  
...  
Keyword(s):  
Drought Stress ◽  
Stress Response ◽  
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

NITROGENASE ACTIVITY OF COWPEA (Vigna unguiculata (L.) Walp.) DURING AND AFTER DROUGHT STRESS

1990 ◽  
Vol 70 (1) ◽  
pp. 163-171 ◽  
Author(s):  
S. PARARAJASINGHAM ◽  
D. P. KNIEVEL
Keyword(s):  
Drought Stress ◽  
Stomatal Conductance ◽  
Water Potential ◽  
Vigna Unguiculata ◽  
Nitrogenase Activity ◽  
Root Nodules ◽  
Experimental Period ◽  
Stress Recovery ◽  
Subsequent Recovery ◽  
Per Se

Greenhouse experiments were conducted with the objectives (1) to investigate the nitrogenase activity (NA) of cowpea (Vigna unguiculata (L.) Walp.) root nodules during the development of and subsequent recovery from drought stress and (2) to determine whether the changes in NA during and following drought stress are related to nodule water potential. Nitrogenase activity of root nodules decreased by more than 80% within 6–8 d of withholding water and recovered 1 or 2 d after watering. Nodule water potential declined significantly from approximately −0.2 MPa to −0.48 MPa with 8 d of stress and recovered to prestress levels within 24 h after watering. Midday abaxial stomatal conductance decreased significantly with stress but recovered within 24 h following watering. Midday leaf water potential did not change significantly during the experimental period. Nodule NA declined 2 d before that of nodule water potential in apparent response to declining soil water content. This response and the lag in the recovery of NA following drought stress after nodule water potential had returned to prestress levels support the hypothesis that nodule water potential per se is not the primary cause for the decline in NA of cowpea root nodules during drought stress.Key words: Vigna unguiculata (L.) Walp., nitrogenase activity, drought stress, recovery, cowpea

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