Morphological and physiological changes in black alder induced by water stress

An experiment to quantify the response of unnodulated, fertilized European black alder (Alnusglutinosa (L.) Gaertn.) seedlings to progressive water stress showed contrasting drought tolerance among five clones, using stomatal conductance, leaf area, and height as indices of drought sensitivity. In particular, one rapidly growing clone (AG 8022-14) showed the ability to moderate changes in water stress more efficiently than the more slowly growing clones. After 30 days of moderate levels of water stress, clones that had higher stomatal conductance also had greater leaf area and height growth. Leaf area and height were both sensitive to plant water status, although no threshold of stress associated with a cessation of leaf area or height expansion was found even though stomatal conductance decreased to 0.05 cm s−1 under severe water stress.

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Survival, physical and physiological changes of Taenia hydatigena eggs under different conditions of water stress

Experimental Parasitology ◽

10.1016/j.exppara.2017.04.009 ◽

2017 ◽

Vol 177 ◽

pp. 47-56 ◽

Cited By ~ 3

Author(s):

Paula Sánchez Thevenet ◽

Hector Manuel Alvarez ◽

Juan Angel Basualdo

Keyword(s):

Water Stress ◽

Physiological Changes ◽

Taenia Hydatigena

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PHYSIOLOGICAL CHANGES ASSOCIATED WITH WATER STRESS IN SWEETPOTATOES

HortScience ◽

10.21273/hortsci.27.6.682d ◽

1992 ◽

Vol 27 (6) ◽

pp. 682d-682

Author(s):

James Q. Garner ◽

Thammasak Thongket

Keyword(s):

Soil Moisture ◽

Fatty Acid ◽

Water Stress ◽

Water Potential ◽

Proline Accumulation ◽

Proline Content ◽

Genotypic Differences ◽

Physiological Changes ◽

Diffusive Resistance ◽

Fatty Acid Compositions

Proline content, leaf water potential (LWP), and leaf diffusive resistance (LDR) were determined for eight sweetpotato genotypes underwater stress conditions. Changes in fatty acid compositions of leaf polar lipids were determined in two sweetpotato genotypes during declining soil moisture. Proline did not accumulate and LWP did not decrease until soil moisture dropped below 10%, but LDR increased as soil moisture decreased. Genotypic differences in proline accumulation and LWP were found. Changes in fatty acid compositions occurred more in glycolipids than in phospholipids. Fatty acid changes were more pronouned in genotype MS20-2 than in “Vardaman”

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Ultrastructural and physiological changes in sporangia of Pseudopevonospova cubensis and Phytophthora infestans exposed to water stress

Canadian Journal of Botany ◽

10.1139/b74-058 ◽

1974 ◽

Vol 52 (3) ◽

pp. 447-450 ◽

Cited By ~ 8

Author(s):

Yigal Cohen ◽

M. Perl ◽

J. Rotem ◽

Helena Eyal ◽

J. Cohen

Keyword(s):

Water Stress ◽

Phytophthora Infestans ◽

Mitochondrial Membrane ◽

Morphological Changes ◽

Membrane Integrity ◽

The Other ◽

Pseudoperonospora Cubensis ◽

Physiological Changes ◽

Mitochondrial Inner Membrane ◽

Dry Out

Viability of sporangia of Pseudoperonospora cubensis and Phytophthora infestans was greatly reduced when sporangia were wetted for a period too short to ensure germination and then allowed to dry out (WDR treatment). No morphological changes were detected in WDR-treated sporangia by microscopic examinations, but when examined under electron microscope they exhibited partial or complete alterations of the mitochondrial inner membrane integrity, some deterioration of the plasmalemma, and extensive vacuolization.Water uptake was not affected but oxygen uptake was totally inhibited in WDR-treated sporangia and previously labeled sporangia exhibited increased leakage. No incorporation of 14C-leucine (into proteins) and 32P-orthophosphate (into nucleic acids) occurred as a result of the treatment. Adding various sugars, alcohols, and adenosine triphosphate (ATP) to the treated sporangia did not restore their viability.It was suggested that the water stress exerted by WDR treatment primarily caused a deterioration of the mitochondrial membrane integrity, which in turn probably led to the other phenomena listed above.

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Physiological Changes in Cultured Sorghum Cells in Response to Induced Water Stress

PLANT PHYSIOLOGY ◽

10.1104/pp.79.1.266 ◽

1985 ◽

Vol 79 (1) ◽

pp. 266-269 ◽

Cited By ~ 47

Author(s):

Shyamala Bhaskaran ◽

Roberta H. Smith ◽

Ronald J. Newton

Keyword(s):

Water Stress ◽

Physiological Changes

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Leaf rolling as indicator of water stress in Cistus incanus from different provenances

10.1101/131508 ◽

2017 ◽

Author(s):

Giacomo Puglielli ◽

Loretta Gratani ◽

Laura Varone

Keyword(s):

Water Stress ◽

Stress Conditions ◽

Physiological Traits ◽

Ex Situ ◽

Physiological Changes ◽

Leaf Rolling ◽

Natural Park ◽

Cistus Incanus ◽

The Relationship ◽

Different Altitudes

ABSTRACTThe relationship between leaf rolling and physiological traits under imposed water stress conditions was analyzed in C. incanus representative saplings collected at different altitudes (i.e. Castelporziano, 41°45′N, 12°26′E, 0 m a.s.l. and Natural Park of Monti Lucretili, 42°33′N, 12°54′E, 750 m a.s.l) and grown ex-situ. The hypothesis that leaf rolling reflected physiological changes occurring during water stress irrespective to the different acclimation to cope with water stress was tested.On the whole, the results show that leaf rolling is associated to an increased sub-stomatal CO2 concentration (Ci) and a decreased carboxylation efficiency (Ce). Moreover, leaf rolling in C. incanus leaves might be involved in protecting the PSII complex under water stress during the progressive inhibition of photosynthetic metabolism.

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Physiological and metabolic alterations in basil (Ocimum basilicum L.) varieties under distinct soil water levels

Boletin Latinoamericano y del Caribe de Plantas Medicinales y Aromaticas ◽

10.37360/blacpma.22.21.1.06 ◽

2022 ◽

Vol 21 (1) ◽

pp. 94-107

Author(s):

Larissa Santos Castro ◽

◽

Daniel Andres Villegas Hurtado ◽

Adriene Aparecida Silva ◽

Danubia Aparecida Costa Nobre ◽

...

Keyword(s):

Water Stress ◽

Water Availability ◽

Ocimum Basilicum ◽

Water Levels ◽

Physiological Changes ◽

Medicinal Species ◽

Phenological Stages ◽

Metabolic Alterations ◽

Physiological Tolerance ◽

Metabolic Characteristics

Basil (Ocimum basilicum L.) is a medicinal species used in several areas, such as food, medicines and cosmetics, and the understanding of its physiological behavior under environmental conditions is of paramount importance for the improvement of cultivation methods. The objective of this study was to evaluate the influence of different water availability under physiological, biochemical and metabolic characteristics, in three distinct genotypes: 'Alfavaca basilicão', 'Gennaro de menta' and 'Grecco à palla', during two different phenological stages (vegetative and reproductive). It was found that the water deficit promotes physiological changes to tolerate water stress, and the studied genotypes have different routes to achieve this physiological tolerance, which culminates in a distinct accumulation of metabolites in plants, and can be considered interesting if the final product is the production of essential oils.

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