scholarly journals Evidence for water deficit-induced mass increases of raffinose family oligosaccharides (RFOs) in the leaves of three Craterostigma resurrection plant species

2015 ◽  
Vol 6 ◽  
Author(s):  
Aurélie Egert ◽  
Barbara Eicher ◽  
Felix Keller ◽  
Shaun Peters
Keyword(s):  
Water Deficit ◽  
Plant Species ◽  
Resurrection Plant ◽  
Raffinose Family Oligosaccharides

scholarly journals ASSESSMENT OF PHYSIOLOGICAL AND MORPHOLOGICAL TRAITS OF PLANTS OF THE GENUS Fragaria UNDER CONDITIONS OF WATER DEFICIT – A STUDY REVIEW

2020 ◽  
Vol 19 (1) ◽  
pp. 21-39
Author(s):  
Marta Rokosa ◽  
Małgorzata Mikiciuk
Keyword(s):  
Water Deficit ◽  
Plant Species ◽  
High Water ◽  
Temperate Climate ◽  
Future Research ◽  
High Water Content ◽  
Species Response ◽  
Influence Of Water ◽  
Specific Species ◽  
Response To Water

The genus Fragaria belongs to the Rosaceae family. The most popular representatives of this species are the strawberry (Fragaria × ananassa Duch.) and wild strawberry (Fragaria vesca L.), whose taste and health benefits are appreciated by a huge number of consumers. The cultivation of Fragaria plants is widespread around the world, with particular emphasis on the temperate climate zone. Increasingly occurring weather anomalies, including drought phenomena, cause immense losses in crop cultivation. The Fragaria plant species are very sensitive to drought, due to the shallow root system, large leaf area and the high water content of the fruit. There have been many studies on the influence of water deficit on the morphological, biochemical and physiological features of strawberries and wild strawberries. There is a lack of research summarizing the current state of knowledge regarding of specific species response to water stress. The aim of this study was to combine and compare data from many research carried out and indicate the direction of future research aimed at improving the resistance of Fragaria plants species to stress related to drought. These plants show patterns of response to stress caused by drought, such as: osmotic adjustment, reduction of transpiration and photosynthesis, and increased efficiency of water use. Drought also causes significant changes in the composition and palatability of the fruit of the Fragaria plant species.

Defence mechanisms against production of free radicals in cells of ‘resurrection’ plants

1994 ◽  
Vol 102 ◽  
pp. 291-294
Author(s):  
Cristina L. M. Sgherri ◽  
Mike F. Quartacci ◽  
Adriana Bochicchio ◽  
Flavia Navari-Izzo
Keyword(s):  
Free Radicals ◽  
Water Deficit ◽  
Water Loss ◽  
Physiological Activity ◽  
Physiological State ◽  
Resurrection Plant ◽  
Resurrection Plants ◽  
Defence Mechanisms ◽  
Adaptation Mechanism ◽  
Severe Water Deficit

The ability of protoplasm to revive following severe water deficit is at its greatest in desiccation-tolerant or ‘resurrection’ plants. Boea hygroscopica is a resurrection plant that is able to survive air-dryness following slow dehydration (80% RH) in a physiological state called anabiosis (Schwab & Gaff 1990). However, this plant loses the ability to recover complete physiological activity following rapid water loss (0% RH).The ability to recover complete physiological activity following repeated protoplasmic dehydration of fully differentiated tissues is an adaptation mechanism unique to resurrection plants.

Water Deficit Triggers Phospholipase D Activity in the Resurrection Plant Craterostigma Plantagineum

2000 ◽  
Vol 12 (1) ◽  
pp. 111 ◽  
Author(s):  
Wolfgang Frank ◽  
Teun Munnik ◽  
Katja Kerkmann ◽  
Francesco Salamini ◽  
Dorothea Bartels
Keyword(s):  
Water Deficit ◽  
Phospholipase D ◽  
Resurrection Plant ◽  
Craterostigma Plantagineum

scholarly journals Water Deficit Triggers Phospholipase D Activity in the Resurrection Plant Craterostigma plantagineum

2000 ◽  
Vol 12 (1) ◽  
pp. 111-123 ◽  
Author(s):  
Wolfgang Frank ◽  
Teun Munnik ◽  
Katja Kerkmann ◽  
Francesco Salamini ◽  
Dorothea Bartels
Keyword(s):  
Water Deficit ◽  
Phospholipase D ◽  
Resurrection Plant ◽  
Craterostigma Plantagineum

scholarly journals Identification of Factors Linked to Higher Water-Deficit Stress Tolerance in Amaranthus hypochondriacus Compared to Other Grain Amaranths and A. hybridus, Their Shared Ancestor

Plants ◽  
2019 ◽  
Vol 8 (7) ◽  
pp. 239 ◽  
Author(s):  
Tzitziki González-Rodríguez ◽  
Ismael Cisneros-Hernández ◽  
Jonathan Acosta Bayona ◽  
Enrique Ramírez-Chavez ◽  
Norma Martínez-Gallardo ◽  
...  
Keyword(s):  
Water Deficit ◽  
Water Deficit Stress ◽  
Marker Genes ◽  
Raffinose Family Oligosaccharides ◽  
Amaranthus Hypochondriacus ◽  
Galactinol Synthase ◽  
Raffinose Synthase ◽  
Unknown Structure ◽  
Use Efficiency ◽  
Strong Depletion

Water deficit stress (WDS)-tolerance in grain amaranths (Amaranthus hypochondriacus, A. cruentus and A. caudatus), and A. hybridus, their presumed shared ancestor, was examined. A. hypochondriacus was the most WDS-tolerant species, a trait that correlated with an enhanced osmotic adjustment (OA), a stronger expression of abscisic acid (ABA) marker genes and a more robust sugar starvation response (SSR). Superior OA was supported by higher basal hexose (Hex) levels and high Hex/sucrose (Suc) ratios in A. hypochondriacus roots, which were further increased during WDS. This coincided with increased invertase, amylase and sucrose synthase activities and a strong depletion of the starch reserves in leaves and roots. The OA was complemented by the higher accumulation of proline, raffinose, and other probable raffinose-family oligosaccharides of unknown structure in leaves and/or roots. The latter coincided with a stronger expression of Galactinol synthase 1 and Raffinose synthase in leaves. Increased SnRK1 activity and expression levels of the class II AhTPS9 and AhTPS11 trehalose phosphate synthase genes, recognized as part of the SSR network in Arabidopsis, were induced in roots of stressed A. hypochondriacus. It is concluded that these physiological modifications improved WDS in A. hypochondriacus by raising its water use efficiency.

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