Effect of water deficit on respiration of conducting bundles in leaf petioles of sugar beet

Shugaeva, N. A.; Vyskrebentseva, Ė. I.; Orekhova, S. O.; Шугаев, А. Г.

doi:10.1134/s1021443707030065

Cited by 22 publications

(10 citation statements)

References 21 publications

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“…However, the maximal capacity of the non-phosphorylating AOX pathway, which is CN-resistant and sensitive to SHAM, significantly increased (Table 1) as well as the RR. Although the nature of the RR remains unclear, it was shown that it may be considerable under abiotic stresses including plant dehydration (Shugaeva et al 2007, Song et al 2009. As expected, the RC value sharply dropped providing evidence for the disruption of the mechanism underlying the regulation of mitochondrial respiration by the adenylate cell system (Fig.…”

Section: Resultssupporting

confidence: 56%

Mitochondrial respiration after combined action of dehydration and low temperature in pea seedlings

Генерозова¹,

Буцанец²,

Шугаев³

2019

Biologia plant.

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Section: Resultssupporting

confidence: 56%

Mitochondrial respiration after combined action of dehydration and low temperature in pea seedlings

Генерозова¹,

Буцанец²,

Шугаев³

2019

Biologia plant.

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“…The O 2 uptake in presence of SHAM and KCN is called residual respiration. Although the role of residual respiration is unclear it has been suggested that it is apparently related to the activity of supplementary terminal oxidases, including Cu-containing oxidases and/or other non-mitochondrial oxidases [38,39]. Respiration data were expressed as nmol O 2 mg −1 FW min −1 .…”

Section: Respiration Measurement and Determination Of Aox Capacitymentioning

confidence: 99%

Uptake of chromium by Salvinia minima: Effect on plant growth, leaf respiration and carbohydrate metabolism

Prado

Rodrı́guez-Montelongo

González

et al. 2010

Journal of Hazardous Materials

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“…Oxygen uptake by sugar beet was characterized by a high rate, distinct cytochrome oxidasedependent terminal oxidation and up to 80% inhibition of respiration in the presence of 0.5 mM potassium cyanide. At an early drought stage (10 days), a decrease in the activity of the cytochrome-mediated oxidation pathway was largely counterbalanced by the activation of mitochondrial alternative oxidase, whereas long-term dehydration of plants was accompanied by activation of additional oxidative systems insensitive to both potassium cyanide and salicylhydroxamate (Shugaeva et al, 2007). In summary, water deficit in the rhizosphere leads to an increased rate of root respiration, leading to an imbalance in the utilization of carbon resources, reduced production of adenosine triphosphate and enhanced generation of reactive oxygen species.…”

Section: Respirationmentioning

confidence: 99%

Plant drought stress: effects, mechanisms and management

Farooq

Wahid

Kobayashi

et al. 2009

Agron. Sustain. Dev.

3,061

1,622

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-Scarcity of water is a severe environmental constraint to plant productivity. Drought-induced loss in crop yield probably exceeds losses from all other causes, since both the severity and duration of the stress are critical. Here, we have reviewed the effects of drought stress on the growth, phenology, water and nutrient relations, photosynthesis, assimilate partitioning, and respiration in plants. This article also describes the mechanism of drought resistance in plants on a morphological, physiological and molecular basis. Various management strategies have been proposed to cope with drought stress. Drought stress reduces leaf size, stem extension and root proliferation, disturbs plant water relations and reduces water-use efficiency. Plants display a variety of physiological and biochemical responses at cellular and whole-organism levels towards prevailing drought stress, thus making it a complex phenomenon. CO 2 assimilation by leaves is reduced mainly by stomatal closure, membrane damage and disturbed activity of various enzymes, especially those of CO 2 fixation and adenosine triphosphate synthesis. Enhanced metabolite flux through the photorespiratory pathway increases the oxidative load on the tissues as both processes generate reactive oxygen species. Injury caused by reactive oxygen species to biological macromolecules under drought stress is among the major deterrents to growth. Plants display a range of mechanisms to withstand drought stress. The major mechanisms include curtailed water loss by increased diffusive resistance, enhanced water uptake with prolific and deep root systems and its efficient use, and smaller and succulent leaves to reduce the transpirational loss. Among the nutrients, potassium ions help in osmotic adjustment; silicon increases root endodermal silicification and improves the cell water balance. Low-molecular-weight osmolytes, including glycinebetaine, proline and other amino acids, organic acids, and polyols, are crucial to sustain cellular functions under drought. Plant growth substances such as salicylic acid, auxins, gibberrellins, cytokinin and abscisic acid modulate the plant responses towards drought. Polyamines, citrulline and several enzymes act as antioxidants and reduce the adverse effects of water deficit. At molecular levels several drought-responsive genes and transcription factors have been identified, such as the dehydration-responsive element-binding gene, aquaporin, late embryogenesis abundant proteins and dehydrins. Plant drought tolerance can be managed by adopting strategies such as mass screening and breeding, marker-assisted selection and exogenous application of hormones and osmoprotectants to seed or growing plants, as well as engineering for drought resistance. drought response / stomatal oscillation / osmoprotectants / hormones / stress proteins / drought management / CO 2

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Effect of water deficit on respiration of conducting bundles in leaf petioles of sugar beet

Cited by 22 publications

References 21 publications

Mitochondrial respiration after combined action of dehydration and low temperature in pea seedlings

Mitochondrial respiration after combined action of dehydration and low temperature in pea seedlings

Uptake of chromium by Salvinia minima: Effect on plant growth, leaf respiration and carbohydrate metabolism

Plant drought stress: effects, mechanisms and management

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