The effect of compatible solutes on proteins

Paleg, L. G.; Stewart, George R.; Starr, R.

doi:10.1007/bf02182235

Cited by 21 publications

(2 citation statements)

References 22 publications

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“…As soluble sugars showed a gradual and consistent reduction with increasing salt stress around the seeds, so as to provide the carbon skeleton to build other active soluble solutes in the seedling tissues. One of these solutes was proline; and it accumulates to maintain the machinery of plant tissues, in addition to its contribution to the osmotic adjustment (Table 5) [48,[61][62][63]. Table 5: The effect of salt stress on some biochemical parameters in the germinated seeds of the Jordanian barley (Hordeum vulgare L.) cultivar,…”

Section: Nacl (Dsmmentioning

confidence: 99%

Soluble Sugars in Plants Under Stress at the Arabian Gulf Region: Possible Roles of Microorganisms

Bt¹,

Rf²,

Fa³

et al. 2018

J Plant Biochem Physiol

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This review discusses the functions of soluble sugars (as compatible solutes) in supporting the growth of plants under osmotic stress, and the perspectives of research on the role of the associated microorganisms as a new approach in providing these solutes to plants. Previous findings have suggested that plants sacrifice from their energy and reserves to build up compatible solutes and to perform various functions; as osmo-protectants and possibly to stabilize biomolecules, and to achieve osmotic adjustment between the plants and their environments. However, many reports have shown contradictory and controversial results, since there was no consistency in the response of plants to various types of abiotic stresses, during various stages of growth and development. Recent outcomes have revealed that other soluble sugars such as trehalose, might accumulate under extreme environmental conditions by various groups of microorganisms (bacteria and fungi), to support the growth of native plants and crops. This review reports the possibility of the presence of trehalose in the native plants of Qatar, as well as the associated microorganisms. However, articles in large numbers from around the world have shown no clear indication that this sugar accumulates in these plants, and no attempts have been made to measure it. More studies are concentrating on the perspectives of research, regarding the possible role of these soluble sugars that are synthesized in bacteria and fungi, to support the growth of plants in the Arabian Gulf region with a new look of innovative researches, to introduce traits using modern gene technology to build trehalose in some crops. The possible negative impact of the accumulation of compatible solutes in general and the soluble sugars in particular on plant metabolism and growth is discussed, presenting some evidences that have been raised during the last four decades and examples from higher plants.

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Section: Nacl (Dsmmentioning

confidence: 99%

Soluble Sugars in Plants Under Stress at the Arabian Gulf Region: Possible Roles of Microorganisms

Bt¹,

Rf²,

Fa³

et al. 2018

J Plant Biochem Physiol

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“…Other solutes may be involved in the reduction of ψ π (Lambers et al 1998). Besides contributing to the maintenance of pressure turgor and, consequently, to sustain photosynthesis, soluble sugars may have a protective function, stabilizing proteins and membranes during dehydration (Paleg et al 1985).…”

Section: ---mentioning

confidence: 99%

CO<sub>2</sub> Assimilation and Water Relations of Almond Tree (Prunus amygdalus Batsch) Cultivars Grown Under Field Conditions

Matos¹,

Rebelo²,

Lauriano³

et al. 2004

Photosynt.

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Gas exchanges and leaf water potential (ψ w ) of six-years-old trees of fourteen Prunus amygdalus cultivars, grafted on GF-677, were studied in May, when fruits were in active growing period, and in October, after harvesting. The trees were grown in the field under rain fed conditions. Predawn ψ w showed lower water availability in October compared with May. The lowest ψ w values at midday in May increased gradually afterwards, while in October they decreased progressively until night, suggesting a higher difficulty to compensate the water lost by transpiration. However, relative water content (RWC) measured in the morning was similar in both periods, most likely due to some rainfall that occurred in September and first days of October that could be enough to re-hydrate canopy without significantly increasing soil water availability. The highest net photosynthetic rate (P N ) was found in both periods early in the morning (08:00-11:00). Reductions in P N from May to October occurred in most cultivars except in José Dias and Ferrastar. In all cultivars a decrease in stomatal conductance (g s ) was observed. Photosynthetic capacity (P max ) did not significantly change from spring to autumn in nine cultivars, revealing a high resistance of photosynthetic machinery of this species to environmental stresses, namely high temperature and drought. Osmotic adjustment was observed in some cultivars, which showed reductions of ca. 23 % (Duro d' Estrada, José Dias) and 15 % (Tuono) in leaf osmotic potential (ψ π ). Such decreases were accompanied by soluble sugars accumulation. The Portuguese cultivar José Dias had a higher photosynthetic performance than the remaining genotypes.

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Drought Resistance and Its Improvement

Blum¹

2010

Plant Breeding for Water-Limited Environments

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The effect of compatible solutes on proteins

Cited by 21 publications

References 22 publications

Soluble Sugars in Plants Under Stress at the Arabian Gulf Region: Possible Roles of Microorganisms

Soluble Sugars in Plants Under Stress at the Arabian Gulf Region: Possible Roles of Microorganisms

CO<sub>2</sub> Assimilation and Water Relations of Almond Tree (Prunus amygdalus Batsch) Cultivars Grown Under Field Conditions

Drought Resistance and Its Improvement

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