Sucrose metabolism and fruit growth in parthenocarpic vs seeded blueberry (<i>Vaccinium ashei</i>) fruits

Cano-Medrano, Raquel; Darnell, Rebecca L.

doi:10.1111/j.1399-3054.1997.tb00558.x

Cited by 14 publications

(7 citation statements)

References 37 publications

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“…Other studies, however, have indicated no relationship between sugar content and composition and final fruit size. For example, development of blueberry fruit was not limited by sucrose metabolizing enzyme activity and/or the ability to accumulate sugars (Cano-Medrano and Darnell 1997). Likewise, soybean seed growth was not limited by the endogenous concentration of sucrose in reproductive tissues (Schussler et al 1991).…”

Section: Introductionmentioning

confidence: 99%

Factors affecting ‘Hass’ avocado fruit size: Carbohydrate, abscisic acid and isoprenoid metabolism in normal and phenotypically small fruit

Richings¹,

Cripps²,

Cowan³

2000

Physiologia Plantarum

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respiration and both seed and mesocarp tissue showed increased Carbohydrate and abscisic acid (ABA) metabolism were inves-ABA metabolism. Applied ABA caused an increase in insoluble tigated in normal and phenotypically small 'Hass' avocado (Persea americana Mill.) fruit in an attempt to link alterations acid invertase activity in seed tissue of normal fruit while mevastatin reduced HMGR activity in this tissue, caused in sugar and ABA content with changes in 3-hydroxy-3-methylglutaryl coenzyme A reductase (HMGR, EC 1.1.1.34) activity sucrose depletion and increased the proportion of glucose from 5 to 57% of total soluble sugars. Exogenous glucose suppressed and fruit size. The small-fruit phenotype was characterized by reduced seed HMGR activity, increased seed insoluble acid HMGR activity in seed tissue whereas in mesocarp tissue, invertase (-D-fructofuranosidase, EC 3.2.1.26), decreased su-HMGR activity was reduced to 38% of the control after 6 h but enhanced by 46% by 48 h. Glucose increased ABA crose synthase (SS; UDP-D-glucose:D-fructose-2--glucosyltransferase, EC 2.4.1.13) activity, decreased sucrose content, biosynthesis and turnover in competent tissues. These results and increased glucose as a proportion of the total soluble sugar. suggest that ABA turnover is mediated, in part, by carbohydrate content and composition which also affects HMGR Sucrose phosphate synthase (SPS; UDP-D-glucose:D-fructose 6-phosphate 2--D-glucosyltransferase, EC 2.4.1.14) activity activity. It is proposed that sugar and ABA signals act in was unaffected in seed but reduced in mesocarp of the small concert to modulate expression and/or activity of HMGR in the control of 'Hass' avocado fruit growth and final fruit size. fruit. In addition, the small-fruit variant displayed enhanced appearance of symptoms associated with the small-fruit variant, in particular early seed coat senescence , Moore-Gordon et al. 1998. The effect of these compounds was negated when either mevastatin or ABA was co-injected with the cytokinin (CK) isopentenyladenine (2iP).HMGR catalyses the conversion of 3-hydroxy-3-methylglutaryl coenzyme A (HMG-CoA) to mevalonic acid (MVA), the precursor of the cytosolic isoprenoid biosynthetic pathway which also gives rise to the side chain of CK. By comparison, ABA is formed from chloroplast-synthesized carotenoids (Cowan and

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Section: Introductionmentioning

confidence: 99%

Factors affecting ‘Hass’ avocado fruit size: Carbohydrate, abscisic acid and isoprenoid metabolism in normal and phenotypically small fruit

Richings¹,

Cripps²,

Cowan³

2000

Physiologia Plantarum

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“…Indicator letters in common denote a lack of a significant difference kinds of fruits. Cano-Medrano and Darnell (1997) found that seeded blueberry fruits needed considerably more carbon supply (calculating respiration and increase of dry weight) for their development than parthenocarpic fruits induced by gibberellin. The process of seed development requires substantial amounts of carbon and energy (Ruan and others 2012).…”

Section: Transcript Accumulation Of Ugpase and Sps Genesmentioning

confidence: 98%

Seeded and Parthenocarpic Cherry Tomato Fruits Exhibit Similar Sucrose, Glucose, and Fructose Levels, Despite Dissimilarities in UGPase and SPS Gene Expression and Enzyme Activity

Rounis

Skarmoutsos

Tsaniklidis

et al. 2014

J Plant Growth Regul

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Farmers often resort to the production of auxininduced parthenocarpic tomato fruits to overcome the adverse climatic conditions which are unfavorable for sufficient fertilization and to lengthen the production period. Even though this practice improves the out-of-season yield, it often undermines fruit quality. In the current study, we examined the effect of induced parthenocarpy in cherry tomato cv. Conchita on the concentration of the main sugars, and on the expression, the activity and the localization of UDP-glucose pyrophosphorylase (UGPase) and sucrose phosphate synthase (SPS), enzymes that are actively involved in sucrose metabolism. Minor differences were detected in sugar levels of seeded and parthenocarpic fruits, whereas considerable variances were found in transcript accumulation and enzyme activities of both UGPase and SPS. Moreover, both proteins were present in the developing seeds. Our data indicate that although induced parthenocarpy significantly influences sucrose metabolism, it has a negligible effect on sugar levels.

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“…The only work on enzymatic characterization of sugar biosynthesis in other berry species studied the relationships between gibberellic acid (GA 3 )-induced parthenocarpy and sugar metabolism in blueberry (Vaccinium ashei). By studying the activity of VaSAIV, VaSPS and VaSS, the authors revealed no limitation on fruit growth by sugar biosynthesis enzymes in either GA 3 -treated parthenocarpic (seedless) or control pollinated (seeded) fruits [20]. NAD+-dependent sorbitol dehydrogenase (SDH) and sorbitol-6-phosphate dehydrogenase (S6PDH) are involved in sorbitol metabolism.…”

Section: Sugar and Acid Compositionmentioning

confidence: 99%

Advances in functional research of antioxidants and organoleptic traits in berry crops

et al. 2008

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Berry species are economically-important crops worldwide and represent an invaluable source of vitamins and other health-related compounds. Species belonging to the families Rosaceae, Ericaceae and Grossulariaceae provide the most popular fruits, showing a strong diversity in natural and breeding populations as to berry traits (fruit type, size, color, flavor, antioxidant capacity), resistance to a/biotic stress, adaptation to different environment/culture conditions. The small genome size of most diploid berry genera is a remarkable feature for last-generation genomics technologies, molecular genetics and functional studies. This review will cover the literature dealing with molecular research in berry crops, focusing on antioxidant- and flavor-related compounds.

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Sucrose metabolism and fruit growth in parthenocarpic vs seeded blueberry (Vaccinium ashei) fruits

Cited by 14 publications

References 37 publications

Factors affecting ‘Hass’ avocado fruit size: Carbohydrate, abscisic acid and isoprenoid metabolism in normal and phenotypically small fruit

Factors affecting ‘Hass’ avocado fruit size: Carbohydrate, abscisic acid and isoprenoid metabolism in normal and phenotypically small fruit

Seeded and Parthenocarpic Cherry Tomato Fruits Exhibit Similar Sucrose, Glucose, and Fructose Levels, Despite Dissimilarities in UGPase and SPS Gene Expression and Enzyme Activity

Advances in functional research of antioxidants and organoleptic traits in berry crops

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