scholarly journals A novel strigolactone‐miR156 module controls stomatal behaviour during drought recovery

2020 ◽  
Vol 43 (7) ◽  
pp. 1613-1624 ◽  
Author(s):  
Ivan Visentin ◽  
Chiara Pagliarani ◽  
Eleonora Deva ◽  
Alessio Caracci ◽  
Veronika Turečková ◽  
...  
Keyword(s):  
Stomatal Behaviour ◽  
Drought Recovery

Climate windows of intra-annual growth and post-drought recovery in Mediterranean trees

2021 ◽  
Vol 308-309 ◽  
pp. 108606
Author(s):  
J. Julio Camarero ◽  
Álvaro Rubio-Cuadrado ◽  
Antonio Gazol
Keyword(s):  
Annual Growth ◽  
Drought Recovery

scholarly journals Drought-Induced Accumulation of Root Exudates Supports Post-drought Recovery of Microbes in Mountain Grassland

2018 ◽  
Vol 9 ◽  
Author(s):  
Stefan Karlowsky ◽  
Angela Augusti ◽  
Johannes Ingrisch ◽  
Mohammad Kamal Uddin Akanda ◽  
Michael Bahn ◽  
...  
Keyword(s):  
Root Exudates ◽  
Mountain Grassland ◽  
Drought Recovery

scholarly journals Growth and Physiological Traits Associated with Drought Survival and Post-drought Recovery in Perennial Turfgrass Species

2010 ◽  
Vol 135 (2) ◽  
pp. 125-133 ◽  
Author(s):  
Qi Chai ◽  
Fang Jin ◽  
Emily Merewitz ◽  
Bingru Huang
Keyword(s):  
Cell Wall ◽  
Drought Stress ◽  
Osmotic Adjustment ◽  
Perennial Grass ◽  
Kentucky Bluegrass ◽  
Physiological Traits ◽  
Grass Species ◽  
Cell Wall Elasticity ◽  
Drought Recovery ◽  
Drought Survival

The objective of this study was to determine physiological traits for drought survival and post-drought recovery upon re-watering in two C3 perennial grass species, kentucky bluegrass [KBG (Poa pratensis)] and perennial ryegrass [PRG (Lolium perenne)]. Plants were maintained well watered or exposed to drought stress by withholding irrigation and were then re-watered in a growth chamber. KBG had significantly higher grass quality and leaf photochemical efficiency, and lower electrolyte leakage than PRG during 20 days of drought. After 7 days of re-watering, drought-damaged leaves were rehydrated to the control level in KBG, but could not fully recover in PRG. KBG produced a greater number of new roots, while PRG had more rapid elongation of new roots after 16 days of re-watering. Superior drought tolerance in KBG was associated with osmotic adjustment, higher cell wall elasticity, and lower relative water content at zero turgor. Osmotic adjustment, cell wall elasticity, and cell membrane stability could play important roles in leaf desiccation tolerance and drought survival in perennial grass species. In addition, post-drought recovery of leaf hydration level and physiological activity could be associated with the accumulation of carbohydrates in leaves and rhizomes during drought stress and new root production after re-watering.

scholarly journals Estimation of hydrological drought recovery based on GRACE water storage deficit

2019 ◽  
Author(s):  
Alka Singh ◽  
John T. Reager ◽  
Ali Behrangi
Keyword(s):  
Recovery Period ◽  
Water Storage ◽  
Storage Conditions ◽  
Precipitation Anomaly ◽  
Precipitation Forecast ◽  
Climate Extreme ◽  
Terrestrial Water Storage ◽  
Wet Season ◽  
Drought Recovery ◽  
Terrestrial Water

Abstract. Drought is a natural climate extreme phenomenon that presents great challenges in forecasting and monitoring for water management purposes. Previous studies have examined the use of Gravity Recovery and Climate Experiment (GRACE) terrestrial water storage anomalies to measure the amount of water missing from a drought-affected region, and other studies have attempted statistical approaches to drought recovery forecasting based on joint probabilities of precipitation and soil moisture. The goal of this study is to combine GRACE data with historical precipitation observations to quantify the amount of precipitation required to achieve normal storage conditions in order to estimate a likely drought recovery time. First, linear relationships between terrestrial water storage anomaly (TWSA) and cumulative precipitation anomaly are established across a range of conditions. Then, historical precipitation data are statistically modeled to develop simplistic precipitation forecast skill. Three different precipitation scenarios are simulated by using a standard deviation in climatology. Precipitation scenarios are convolved with precipitation deficit estimates to calculate best-estimate of a drought recovery period. The results show that in the regions of strong seasonal amplitude (like monsoon belt) drought continues even with the above-normal precipitation until its wet season. Historical GRACE-observed drought recovery period is used to validate the approach. Estimated drought for an example month demonstrated 80% similar recovery period as observed by the GRACE.

scholarly journals The direct and indirect effects of nitrogen shortage on photosynthesis and transpiration in maize and sunflower.

1979 ◽  
Vol 27 (3) ◽  
pp. 227-234
Author(s):  
J. Goudriaan ◽  
H. van Keulen
Keyword(s):  
Indirect Effects ◽  
Leaf Tissue ◽  
Co2 Assimilation ◽  
Direct And Indirect Effects ◽  
Stomatal Behaviour ◽  
Net Co2 Assimilation ◽  
Similar Relation ◽  
Use Efficiency ◽  
Different Levels ◽  
N Status

Experiments with maize and sunflower in sol. culture were carried out to investigate the effect of N shortage in the leaf tissue on stomatal behaviour. In maize a linear relation existed between the rate of net CO2 assimilation and the conductance of water vapour, independently of the N status of the tissue. In sunflower a similar relation existed although the evidence was less conclusive. It was concluded that stomatal behaviour cannot explain differences in water-use efficiency between plants growing at different levels of N. (Abstract retrieved from CAB Abstracts by CABI’s permission)

A recording porometer with detachable cups operating on four separate leaves

1962 ◽  
Vol 156 (962) ◽  
pp. 1-13 ◽  
Keyword(s):  
Carbon Dioxide ◽  
Carbon Dioxide Concentration ◽  
Ambient Air ◽  
Short Supply ◽  
Enhanced Sensitivity ◽  
Stomatal Behaviour ◽  
New Instrument ◽  
Leaf Surfaces ◽  
Increased Sensitivity ◽  
Experimental Treatments

A new form of recording resistance porometer is described which enables records of stomatal behaviour to be obtained concurrently from four different leaves; the porometer cups are automatically detached between readings, exposing the leaf surfaces to the ambient air in order to avoid artifacts due to changes in carbon dioxide concentration. The readings are recorded for the four leaves seriatim , the cup for each remaining attached for 3 min out of every ½ h. The results of several of the preliminary experiments carried out to test the new instrument are presented: 1. Continuous records for periods up to 6 days appear to have no serious effect on the functioning of the stomata under normal conditions. With Taraxacum officinale slightly greater stomatal opening was recorded on the fifth day than on the first; for wheat a slight falling off occurred on the third and fourth days, possibly due to ageing of the leaves. 2. The stomata of similar leaves on different plants which have been subjected throughout to the same sequence of conditions show remarkable uniformity of behaviour at any one time; a great increase in the precision of comparisons of experimental treatments should thus be achieved by applying them to such leaves and recording the results concurrently. 3. Experiments with plants of T . officinale , wheat and Xanthium pennsylvanicum subjected to increasing water strain have shown a marked closing response to the process of taking a reading (which involves forcing air through the leaf). This closing response is first seen some time before visible wilting occurs and for X. pennsylvanicum has been shown to be mainly if not entirely due to a greatly increased sensitivity to carbon dioxide. The biological implica­tions of this are discussed. The stomata (e. g. of T. officinale ) may not re-open fully for 2 or 3 days after re-watering, when the plant is recovering from water strain, but the enhanced sensitivity to readings is only shown while water is actually in short supply, and not during the period of recovery.

scholarly journals Tubulin perturbation leads to unexpected cell wall modifications and affects stomatal behaviour inPopulus

2015 ◽  
Vol 66 (20) ◽  
pp. 6507-6518 ◽  
Author(s):  
Prashant S. Swamy ◽  
Hao Hu ◽  
Sivakumar Pattathil ◽  
Victoria J. Maloney ◽  
Hui Xiao ◽  
...  
Keyword(s):  
Cell Wall ◽  
Stomatal Behaviour

Changes induced by water stress on water relations, stomatal behaviour and morphology of table grapes (cv. Crimson Seedless) grown in pots

2016 ◽  
Vol 202 ◽  
pp. 9-16 ◽  
Author(s):  
M.R. Conesa ◽  
J.M. de la Rosa ◽  
R. Domingo ◽  
S. Bañon ◽  
A. Pérez-Pastor
Keyword(s):  
Water Stress ◽  
Water Relations ◽  
Table Grapes ◽  
Stomatal Behaviour
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