The effect of water stress on photosynthetic carbon metabolism in four species grown under field conditions

Quick, W. Paul; Chaves, M. M.; Wendler, Renate; David, Manuela; Rodrigues, Marcelo; Passaharinho, J. A.; Pereira, J. S.; Adcock, Michael D.; Leegood, Richard C.; Stitt, Mark

doi:10.1111/j.1365-3040.1992.tb01455.x

Cited by 307 publications

(219 citation statements)

References 41 publications

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“…Many researchers have investigated the relation between CO 2 assimilation and end-products in bean (Castrillo, 1992) and others species (Quick et al, 1992;Farrar et al, 2000;Wingler et al, 2006), showing the important role of leaf soluble sugar amounts in the feedback regulatory mechanisms of photosynthesis. In addition, starch and amino acid biosynthesis, which are regulated by soluble sugar amounts, can also act as a secondary feedback regulatory mechanism of photosynthesis (Paul and Pellny, 2003).…”

Section: Introductionmentioning

confidence: 99%

Daily balance of leaf sugars and amino acids as indicators of common bean (Phaseolus vulgaris L.) metabolic response and drought intensity

Santos

Pimentel

2009

Physiol Mol Biol Plants

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Leaf soluble sugar, starch and free amino acid amounts were evaluated in two bean genotypes, Carioca and Ouro Negro, grown in 10 L pots in a greenhouse. This was realized during a single day for Carioca and during ten days of water deficit for both genotypes, at 06:00 and 18:00 h. During the day, an increase in all parameters occurred up to midday, while in the afternoon, carbohydrate amounts varied in opposition to amino acids amounts. Under water deficit, the leaf soluble sugars at 18:00 and their daily balance (amount at 18:00 minus amount at 06:00) increased on the 2 nd day, with starch and amino acid amounts and their respective daily balances decreasing. On the 8 th and 10 th days, the soluble sugar daily balance was negative and the starch daily balance approached zero or was negative, while the amino acid daily balance was positive. During rehydration, soluble sugar daily balance was close to zero and starch daily balance increased, whereas amino acid daily balance was negative. The carbohydrate daily balance, strongly related to free amino acid daily balance, were good indicators for evaluating the stage of water deficit and metabolic capacity to respond to the stress in common bean.

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Section: Introductionmentioning

confidence: 99%

Daily balance of leaf sugars and amino acids as indicators of common bean (Phaseolus vulgaris L.) metabolic response and drought intensity

Santos

Pimentel

2009

Physiol Mol Biol Plants

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“…Environmental stresses such as drought also affect carbon partitioning and sucrose pools (Quick et al, 1992). Although carbon assimilation is reduced under drought stress, in the majority of plants assimilates accumulate increasingly in the soluble forms, thereby allowing the adjustment of the osmotic potential of the cells (Bohnert et al, 1995).…”

Section: mentioning

confidence: 99%

Effects of drought, transgenic expression of a fructan synthesizing enzyme and of mycorrhizal symbiosis on growth and soluble carbohydrate pools in tobacco plants

et al. 1999

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The effects of three conditions likely to affect soluble carbohydrate pools, namely drought, expression of barley sucrose : fructan 6-fructosyl transferase (6-SFT, EC 2;4;1;10) and the establishment of the arbuscular mycorrhizal symbiosis with Glomus mosseae were studied in a multifactorial experiment using tobacco (Nicotiana tabacum). Tobacco, a plant naturally unable to form fructan, accumulated fructan in leaves, and to a larger extent in the roots, when transformed with 6-SFT. Under drought conditions, growth was considerably reduced, but neither expression of 6-SFT nor mycorrhiza formation had an effect on growth rate. However, in response to drought, carbon partitioning was significantly altered towards accumulation of soluble sugars. In plants exposed to drought, pools of sucrose were greater than those of unstressed plants, particularly in their roots. In the transgenic plants expressing 6-SFT, there were also increased contents of the products of 6-SFT, namely fructan, most probably because of the increased availability of the substrate, sucrose. These effects were the same in the presence or absence of mycorrhiza. Hexoses (glucose and fructose) also increased in response to drought, primarily in the leaves. This effect of drought was little affected by the expression of 6-SFT, except that it slightly enhanced drought-induced glucose accumulation in roots. However, the presence of mycorrhiza led to a considerable reduction in drought-induced accumulation of hexoses in the leaves. The content of the fungal disaccharide trehalose was greatly increased in the roots of all mycorrhizal plants upon exposure to drought, particularly in some of the transgenic plants expressing 6-SFT.

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“…Whatever its functional significance, a change in sucrose accumulation is one of the most commonly observed responses to abiotic stress ; here we shall discuss how these changes are brought about. The imposition of water or salt stress led to sucrose accumulation in the leaves of several C $ species, including spinach, lupin, Eucalyptus globulus and rice (Quick et al, 1989(Quick et al, , 1992Garcia et al, 1997). A stress-induced change in photosynthate partitioning, in favour of sucrose, was observed in several of these species and was correlated with an increase in SPS activity and the rate of sucrose synthesis (Zrenner & Stitt, 1991 ;Quick et al, 1992).…”

Section: Abiotic Stress and Sucrose Synthesismentioning

confidence: 99%

“…The imposition of water or salt stress led to sucrose accumulation in the leaves of several C $ species, including spinach, lupin, Eucalyptus globulus and rice (Quick et al, 1989(Quick et al, , 1992Garcia et al, 1997). A stress-induced change in photosynthate partitioning, in favour of sucrose, was observed in several of these species and was correlated with an increase in SPS activity and the rate of sucrose synthesis (Zrenner & Stitt, 1991 ;Quick et al, 1992). In contrast, water stress decreased the activity of SPS and the rate of sucrose synthesis in Phaseolus vulgaris but decreased the rate of starch synthesis even more, so a change in partitioning in favour of sucrose was also seen in this species (Vassey & Sharkey, 1989).…”

Section: Abiotic Stress and Sucrose Synthesismentioning

confidence: 99%

Tansley Review No. 105.

Lunn

Furbank

1999

New Phytologist

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Sucrose has a central role in the metabolism of all higher plants. Here we discuss the location of sucrose synthesis in the leaves of C % plants, the control of flux through the pathway and its response to environmental conditions, and finally some of the prospects for the genetic manipulation of sucrose metabolism in C % plants. Much of our knowledge about sucrose synthesis in plants comes from C $ species ; it is evident, from those studies of C % species that are available, that there are many similarities between sucrose synthesis in C $ and C % plants. However, some of the basic regulatory mechanisms common to both C $ and C % plants seem to have been adapted for the specialized photosynthetic metabolism of C % plants. There are also some other important differences : for example, some C % species possess photosynthetic cells with little or no capacity for sucrose synthesis. For these reasons it is not always appropriate to extrapolate directly from C $ to C % plants. Even where data are available from one C % species, usually maize, it should not be assumed that all C % plants are necessarily the same in every respect. Although C % plants constitute a small fraction of the plant kingdom as a whole, they include a disproportionate number of agriculturally important species. C % plants also have some advantages over C $ plants for studies of the regulation of cell-specific gene expression and the control of metabolism. For these reasons we suggest that they are worthy of more attention by researchers.

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The effect of water stress on photosynthetic carbon metabolism in four species grown under field conditions

Cited by 307 publications

References 41 publications

Daily balance of leaf sugars and amino acids as indicators of common bean (Phaseolus vulgaris L.) metabolic response and drought intensity

Daily balance of leaf sugars and amino acids as indicators of common bean (Phaseolus vulgaris L.) metabolic response and drought intensity

Effects of drought, transgenic expression of a fructan synthesizing enzyme and of mycorrhizal symbiosis on growth and soluble carbohydrate pools in tobacco plants

Tansley Review No. 105.

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