Contribution of Carbohydrates and other Solutes to Osmotic Adjustment in Wheat Leaves Under Water Stress

Kameli, A.; Lösel, Dorothy M.

doi:10.1016/s0176-1617(11)81903-6

Cited by 107 publications

(52 citation statements)

References 29 publications

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“…Drought stress cause substantial negative effects in plant growth, reducing the productivity [3][4]. Moreover, in several species, plant development is proportional to the intensity of water deficit such as wheat, Triticum durum [5] and lemon, Citrus limon [6]. Plant water status was affected under drought condition.…”

Section: Introductionmentioning

confidence: 99%

“…Leaf tissues exposed to drought shows various responses. Thus, in many species such as, Ctenanthe setosa and Triticum aestivum, the entire lamina and mesophyll thickness were reduced under drought stress [2][3][4][5][6][7][8][9][10][11][12][13][14], while it was unaffected by water stress in salvia spendens and Glycine max [13][14][15][16]. Bussotti et al [17] found that limited soil moisture caused a major thickening of the mesophyll, especially in the leaf cuticle and spongy parenchyma of the beech plant, Fagus sylvatica.…”

Section: Introductionmentioning

confidence: 99%

“…Multiple characteristics of vascular structure have been investigated, such as modifications of the vascular bundle number and area and alteration of xylem/ phloem ratio, which are thought to be involved in the resistance of the plant to environmental stresses [18]. Several studies have shown that xylem and/or phloem vessel diameter was reduced in Ctenanthe setosa and Triticum aestivum plants subjected to drought stress [2][3][4][5][6][7][8][9][10][11][12][13][14]. Thus, xylem with narrow vessels is physiologically better protected against cavitation [19].…”

Section: Introductionmentioning

confidence: 99%

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Anatomical adaptations of Astragalus gombiformis Pomel. under drought stress

et al. 2014

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The present study was designed to study the effect of drought on root, stem and leaf anatomy of Astragalus gombiformis Pomel. Several root, stem and leaf anatomical parameters (cross section diameter, cortex, root cortical cells, pith, leaf lamina and mesophyll thickness) were reduced under moderate to severe water deficit (20–30 days of withheld irrigation). The stele/cross section root ratio increased under moderate water deficit. The root’s and stems vascular systems showed reduced xylem vessel diameter and increased wall thickness under water deficit. In addition, the root xylem vessel density was increased in these drought conditions while it was unchanged in the stems. The stomata density was increased under prolonged drought conditions whereas the stomata size was untouched. The leaf vascular system showed reduced xylem and phloem tissue thickness in the main vein under moderate to severe water deficit. However, in the lamina the vascular tissue and the distance between vascular bundle were unaffected. Our findings suggest a complex network of anatomical adaptations such as a reduced vessel size with increased wall thickness, lesser cortical and mesophyll parenchyma formation and increased stomata density. These proprieties are required for the maintenance of water potential and energy storage under water stress which can improve the resistance of A. gombiformis to survive in arid areas.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Anatomical adaptations of Astragalus gombiformis Pomel. under drought stress

et al. 2014

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“…There are various studies on stress effects on plant lipids (Douglas & Paleg 1981, Pham Thi et al 1982, Anh et al 1985, Liljenberg & Kates 1985, Pham Thi et al 1987, Navari-Izzo et al 1989, Navari-Izzo et al 1990, Navari-Izzo et al 1993. Some investigations showed that water stress reduced PL and GL in cotton (Wilson et al 1987), wheat, barley (Chetal et al 1981), sunflower (Navari-Izzo et al 1990), but some of the studies indicated an increase of PL in wheat (Kameli & Lösel 1995), total lipid increase in alfalfa (Akıncı & Lösel 2012), and free fatty acid increase in wheat (Quartacci & Navari-Izzo 1992). In general, studies demonstrated that long water deficit causes decreasing PLs and GLs and linoleic acid contents but increasing tricylglycerols in leaf tissue.…”

Section: Parviz Moradimentioning

confidence: 99%

Key plant products and common mechanisms utilized by plants in water deficit stress responses

Moradi

2016

Bot. Sci.

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Plants are always exposed to fluctuation of environmental factors. Water stress is one of the main abiotic factors limiting plant growth and development on most areas of the world. Declining available water triggers various adaptive processes to cope with water deficit stress. These mechanisms can be categorized into escape, avoidance and tolerance strategies. Avoidance mechanisms are employed to maintain the balance between water uptake and water loss, while tolerance mechanisms are trying to keep the plant functions the same level as unstressed level. Major molecular mechanisms attributed as tolerance strategies include osmotic adjustment, Reactive Oxygen Species (ROS) scavenging, cellular components protection membrane lipid changes and hormone inductions. Huge number of metabolites contributes to these diverse mechanisms, but broadly can be classified into amino acids, carbohydrates, lipids, proteins and secondary metabolites. In this review, the role of these compounds is discussed in the contributed mechanisms against water deficit stress. Identification of these substances (key plant products) and related biochemical processes of drought tolerance might help plant breeders and researchers in different ways such as shortening and facilitating selection procedures in plant breeding programs, improving drought tolerance of sensitive varieties either by transferring related genes or simply exogenous application.

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“…Most of the research studies have shown that, the plant growth rates were directly proportional to the availability of water in the soil (Kamel and Loser, 1995). In drought, water deficit causes biochemical and physiological processes was changed ranging from photosynthesis to protein synthesis and also solute accumulation (Hu and Schmidhalter, 1998).…”

Section: Introductionmentioning

confidence: 99%

Water Stress Affects Plant Relative Water Content, Soluble Protein, Total Chlorophyll Content and Yield of Ratoon Banana

Surendar¹,

Devi²,

Ravi³

et al. 2013

ijh

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Twelve cultivars of banana plants were grown in field conditions and were studied under two irrigation regimes under ratoon season in order to evaluate the relative water content, soluble protein content, total chlorophyll content and yield changes induced by water deficit. Irrigation was applied when soil water potential reached at 80 per cent ASM for the wet treatments and 50 per cent ASM for the stressed treatment plots. The ASM were calculated based on the soil moisture release curve. The soil moisture content was measured by using pressure plate membrane apparatus. The cultivars and hybrids of Karpuravalli, Karpuravalli x Pisang Jajee, Saba, and Sannachenkathali, the RWC was reduced in water-stressed leaves with 8 per cent over control, which could have accounted for the decreased soluble protein, total chlorophyll content and yield in the per cent reduction of 9 and 8 than the other cultivars and hybrids. The highest reduction of 24 per cent in RWC leads to 19 and 18 per cent reduction in soluble protein and chlorophyll content due to water deficit were registered by the cultivars and hybrid of Matti, Pisang Jajee x Matti, Matti x Anaikomban and Anaikomban x Pisang Jajee leads to reduce the yield.

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Contribution of Carbohydrates and other Solutes to Osmotic Adjustment in Wheat Leaves Under Water Stress

Cited by 107 publications

References 29 publications

Anatomical adaptations of Astragalus gombiformis Pomel. under drought stress

Anatomical adaptations of Astragalus gombiformis Pomel. under drought stress

Key plant products and common mechanisms utilized by plants in water deficit stress responses

Water Stress Affects Plant Relative Water Content, Soluble Protein, Total Chlorophyll Content and Yield of Ratoon Banana

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