Opposite trends of seasonal changes in ADP content and respiration rate in sugar beet roots

Шугаев, А. Г.; Bukhov, N. G.

doi:10.1016/s0176-1617(97)80180-0

Cited by 8 publications

(9 citation statements)

References 15 publications

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“…Addition of CCCP to sugarbeet root tissue did not significantly increase respiration rate (Table 2). This result contrasts with the 1.5-fold increase in respiration rate in mature sugarbeet root slices exposed to uncouplers reported by Shugaev and Bukhov (1997).…”

Section: Article In Presscontrasting

confidence: 99%

“…The ATP and ADP concentrations and the ratio of ATP:ADP observed in this experiment were of similar magnitude to those reported for developing sugarbeet roots (Shugaev and Bukhov, 1997). Relative to other storage organs, however, ATP concentration and the ratio of ATP:ADP in sugarbeet were comparatively low.…”

Section: Adenylate Concentrations and Cellular Energy Statussupporting

confidence: 86%

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Respiration in postharvest sugarbeet roots is not limited by respiratory capacity or adenylates

Klotz

Finger

Anderson

2008

Journal of Plant Physiology

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Control of respiration has largely been studied with growing and/or photosynthetic tissues or organs, but has rarely been examined in harvested and stored plant products. As nongrowing, heterotrophic organs that are reliant on respiration to provide all of their metabolic needs, harvested plant products differ dramatically in their metabolism and respiratory needs from growing and photosynthetically active plant organs, and it cannot be assumed that the same mechanism controls respiration in both actively growing and harvested plant organs. To elucidate mechanisms of respiratory control for a harvested and stored plant product, sugarbeet (Beta vulgaris L.) root respiration was characterized with respect to respiratory capacity, adenylate levels and cellular energy status in roots whose respiration was altered by wounding or cold treatment (1 degrees C) and in response to potential effectors of respiration. Respiration rate was induced by wounding in roots stored at 10 degrees C and by cold temperature in roots stored at 1 degrees C for 11-13d. Alterations in respiration rate due to wounding or storage temperature were unrelated to changes in total respiratory capacity, the capacities of the cytochrome c oxidase (COX) or alternative oxidase (AOX) pathways, adenylate concentrations or cellular energy status, measured by the ATP:ADP ratio. In root tissue, respiration was induced by exogenous NADH indicating that respiratory capacity was capable of oxidizing additional electrons fed into the electron transport chain via an external NADH dehydrogenase. Respiration was not induced by addition of ADP or a respiratory uncoupler. These results suggest that respiration rate in stored sugarbeet roots is not limited by respiratory capacity, ADP availability or cellular energy status. Since respiration in plants can be regulated by substrate availability, respiratory capacity or energy status, it is likely that a substrate, other than ADP, limits respiration in stored sugarbeet roots.

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Section: Article In Presscontrasting

confidence: 99%

Section: Adenylate Concentrations and Cellular Energy Statussupporting

confidence: 86%

Respiration in postharvest sugarbeet roots is not limited by respiratory capacity or adenylates

Klotz

Finger

Anderson

2008

Journal of Plant Physiology

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“…Similarly, a decrease in sucrose content was reported in different varieties of strawberries during cold storage at 6 C (Cordenunsi et al, 2003). Considering that respiration in heterotrophic plant tissues is mostly regulated by intracellular ADP levels (or the ATP/ADP ratio) and the supply of substrates (Shugaev and Bukhov, 1997), the decrease in sucrose content coupled to the high ATP levels and a high ATP/ADP ratio could suggest higher respiration and metabolic activity in fruit stored at 0 C in air than in that stored in high CO 2 conditions. In this sense, the ATP content of avocado fruit was reported to be closely connected to the increase in the respiration rate (Bennett et al, 1987), and a positive correlation between energy status and the respiration rate was shown (Huang et al, 2014).…”

Section: Discussionmentioning

confidence: 66%

CO2-driven changes in energy and fermentative metabolism in harvested strawberries

Bałanda

Rosales

Palma

et al. 2015

Postharvest Biology and Technology

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“…The adenylate patterns of spring‐sown sugar beets, grown in Russia, have been reported by Shugaev and Bukhov (1997). They showed an increase of ADP level in the storage root during the last period of the growth.…”

Section: Introductionmentioning

confidence: 96%

“…They showed an increase of ADP level in the storage root during the last period of the growth. Moreover, during the development of the storage root, the ADP content gradually increased, while respiration rate decreased (Shugaev and Bukhov 1997). In plants, ADP availability is one major factor controlling mitochondrial electron‐transport activity (Beevers 1974).…”

Section: Introductionmentioning

confidence: 99%

Adenylate patterns of autumn‐sown sugar beet differ from spring‐sown sugar beet. Implications for root quality

García‐Mauriño

Jiménez

Monreal

et al. 2005

Physiologia Plantarum

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Sugar beet (Beta vulgaris L) is generally cultivated using two different planting and harvest patterns. In northern zones, spring sugar beet is sown in spring and harvested in autumn, whereas in subtropical latitudes, autumn sugar beet is sown in autumn and harvested in summer. The industrial quality of the root is frequently higher in spring‐sown sugar beet crops. In order to explore physiological changes associated with this fact, this study has been focused on the seasonal changes of adenosine 5′‐triphosphate and adenosine 5′‐diphosphate levels in the storage roots of sugar beet plants, as an index of its metabolic status. The results obtained correspond to a different metabolic status of spring and autumn sugar beet at the moment of harvest. The adenylate patterns of autumn beets suggested a functional and active respiratory system. On the contrary, the patterns shown by spring beets corresponded to those we would expect to see in plants becoming dormant. The proline and glucose contents, which decrease the industrial quality of the root, and the respiratory rate measured in autumn‐sown sugar beets, were nearly twice those of spring‐sown sugar beets. The combination of an active respiratory system, which allows the carbohydrate catabolism and the synthesis of stress molecules, with the environmental factors at the time of the harvest, could be the underlying physiological mechanism causing some of the differences between spring‐ and autumn‐sown sugar beet crops.

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Opposite trends of seasonal changes in ADP content and respiration rate in sugar beet roots

Cited by 8 publications

References 15 publications

Respiration in postharvest sugarbeet roots is not limited by respiratory capacity or adenylates

Respiration in postharvest sugarbeet roots is not limited by respiratory capacity or adenylates

CO2-driven changes in energy and fermentative metabolism in harvested strawberries

Adenylate patterns of autumn‐sown sugar beet differ from spring‐sown sugar beet. Implications for root quality

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