Source-Sink Relationship in Litchi verses Mango: A Concept

Singh, Sanjay Kumar; Nath, Vishal; Sharma, Eeva

doi:10.20546/ijcmas.2017.603.058

Cited by 7 publications

(7 citation statements)

References 24 publications

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“…Вивчення закономірностей функціонування донорно-акцепторної системи рослин і розроблення засобів екзогенної регуляції переміщення потоків асимілятів, спрямування їх до господарсько-важливих тканин і органівактуальні завдання сучасної фітофізіології. Застосування ретардантів та етиленпродуцентів дає можливість змінювати напруженість донорно-акцепторної системи рослини внаслідок регуляції процесів росту, фотосинтезу та перерозподілу потоків пластичних речовин із вегетативних органів на потреби карпогенезу (формування та ріст плодів), що в кінцевій меті оптимізує продукційний процес у сільськогосподарських культур (Singh et al, 2017).…”

Section: вступunclassified

“…Під асимілятами мають на увазі різні сполуки асимільованого рослиною у процесі фотосинтезу вуглецю, у першу чергу транспортні та запасаючі форми вуглеводів, які вважають основою енергетичних і метаболічних процесів, а також «будівельним матеріалом» у процесах росту та розвитку на всіх рівнях організації рослинного організму (Kiriziy et al, 2014). Відомо також, що запасні речовини різних типів відіграють важливу роль буфера між фотосинтезом (як «джерелом» асимілятів) і ростом структурної речовини вегетативних, запасаючих і репродуктивних органів (як «стоком» асимілятів, що визначає певною мірою незалежність ростових процесів від фотосинтезу) (Singh et al, 2017).…”

Section: вступunclassified

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Dynamic of accumulation and redistribution of various carbohydrate forms and nitrogen in organs of tomatoes under treatment with retardants

Rogach

Кравець

Buina

et al. 2018

Regul. Mech. Biosyst.

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The regulation of plant growth and development under application of antigibberellin compounds is accompanied by changes in the donor-acceptor system that in turn affects the accumulation and redistribution of carbohydrates and nitrogen-containing compounds. We studied the influence of tebuconazole 0.025% (EW-250) and 0.05% and 0.07% esphon (2-CEPA) on growth processes, leaf apparatus and content of various carbohydrate forms and total nitrogen content in vegetative organs of tomato hybrids Bobkat and Solerosso. A field-based micro-trial setup was established from 2013 to 2017. The plants were treated via foliar spraying with aqueous solution of retardants at the time of initiation of budding. Phytometric measurements were determined every 10 days, the content of various carbohydrate forms and total nitrogen in organs of plants was determined by using biochemical methods in a fixed dry material (the content of sugars and starch – by iodometric method, and the total nitrogen content – by Kjeldahl). It was found that both retardants reduced the linear growth of tomato plants. The results indicate that 2-CEPA treatment significantly decreased the plant height of both hybrids. Application of drugs increased the number of leaves per plant. The leaf dry matter weight increased, the most significant effect was created by EW-250. The leaf area of the retardant-treated tomatoes hybrid Solerosso increased and decreased in the hybrid Bobcat. Application of antigibberellin compounds intensified the outflow of sugars and remobilization of starch in roots and stems of both tomato hybrids. The content of starch, reducing and non-reducing sugars in leaves of hybrid Solerosso was higher after EW-250 treatment. 2-CEPA increased the content of reducing form of sugars, and EW-250 increased non-reducing form in the hybrid Bobkat. EW-250 intensified the accumulation of carbohydrates in fruits due to reducing sugars in both tomato hybrids, whereas 2-CEPA reduced their content compared with control. Growth inhibitors increased the starch content in fruits at the beginning of vegetation and intensified its reutilization at the end. This process was most intensive was in variant of EW-250-treated plants regardless of hybrids. We proved that there was a clear tendency to decrease the ratio of sugar content to starch in almost all organs of both tomato hybrids during the growing season. The most significant was the reduction of this ratio after EW-250 treatment. At the fruitification phase, the proportion of starch in retardant-treated plants increased compared to the control. The increased accumulation of carbohydrates in tomato fruits treated with EW-250 caused an increase in the average weight of the fruit. We have found that the total nitrogen content in vegetative organs decreased in the control and in the experimental variant of both tomato hybrids during vegetation. EW-250 accelerated the outflow of total nitrogen from roots and stems and increased its content in leaves. This drug retarded the accumulation of this element in fruit. Such changes in the dynamics of total nitrogen under the influence of tebuconazole resulted in enhanced formation of fruit on tomato plants. We concluded that the antigibberellin compounds EW-250 and 2-CEPA due the action on growth processes and leaf apparatus of tomato plants, changed the character of donor-acceptor relation through an increase in outflow of plastic substances from vegetative organs to fruits, which optimized the crop production.

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Section: вступunclassified

Dynamic of accumulation and redistribution of various carbohydrate forms and nitrogen in organs of tomatoes under treatment with retardants

Rogach

Кравець

Buina

et al. 2018

Regul. Mech. Biosyst.

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“…Temporal variability in NSC concentrations is wellstudied in deciduous trees and vines grown in temperate climates, notably fruit and nut crops (Boldingh et al 2000;Holzapfel et al 2010;Rossouw et al 2017b;Mesa et al 2019;Breen et al 2020;Tixier et al 2020). To a lesser extent, NSC dynamics have been explored for evergreen fruit trees in tropical or sub-tropical environments (Davie and Stassen 1997b;Olesen et al 2008;Singh et al 2017).…”

Section: Introductionmentioning

confidence: 99%

The roles of non-structural carbohydrates in fruiting: a review focusing on mango (Mangifera indica)

Rossouw,

Orr,

Bennett

et al. 2024

Funct. Plant Biol.

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Reproductive development of fruiting trees, including mango (Mangifera indica L.), is limited by non-structural carbohydrates. Competition for sugars increases with cropping, and consequently, vegetative growth and replenishment of starch reserves may reduce with high yields, resulting in interannual production variability. While the effect of crop load on photosynthesis and the distribution of starch within the mango tree has been studied, the contribution of starch and sugars to different phases of reproductive development requires attention. This review focuses on mango and examines the roles of non-structural carbohydrates in fruiting trees to clarify the repercussions of crop load on reproductive development. Starch buffers the plant’s carbon availability to regulate supply with demand, while sugars provide a direct resource for carbon translocation. Sugar signalling and interactions with phytohormones play a crucial role in flowering, fruit set, growth, ripening and retention, as well as regulating starch, sugar and secondary metabolites in fruit. The balance between the leaf and fruit biomass affects the availability and contributions of starch and sugars to fruiting. Crop load impacts photosynthesis and interactions between sources and sinks. As a result, the onset and rate of reproductive processes are affected, with repercussions for fruit size, composition, and the inter-annual bearing pattern.

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“…The study into the regularities of the functioning of the donor-acceptor system of plants and the development of the means of exogenous regulation of the transfer of flows of assimilates and their orientation to economically important tissues and organs is an urgent task of modern phytophysiology. The application of retardants and ethyleneproducts makes it possible to change the tension of the donor-acceptor system of the plant due to the regulation of growth processes, photosynthesis, and redistribution of streams of plastic substances from the vegetative organs to the needs of carpogenesis (formation and growth of fruits), which ultimately optimizes the crop production process (Kuryat, Rogach, 2009;Singh et al, 2017;Shevchuk et al, 2018).…”

Section: Introductionmentioning

confidence: 99%

“…Assimilates refer to different compounds that the plant assimilates during carbon photosynthesis, primarily transport and storage forms of carbohydrates, which are considered the basis of energy and metabolic processes, as well as "building material" in the processes of growth and development at all levels of the organization of a plant organism (Kiriziy et al, 2014). It is also known that stockpiling substances of various types play an important role in the buffer between photosynthesis as a "source" of assimilates, and the growth of the structural matter of vegetative, stock, and reproductive organs, as a "runoff " of assimilates, which to some extent determines the independence of growth processes from photosynthesis (Singh et al, 2017).…”

Section: Introductionmentioning

confidence: 99%

Influence of gibberellin inhibitors on the accumulation and redistribution of various forms of carbohydrates and nitrogen-containing compounds in plants of Solanum melongena L.

Rogach¹,

Reshetnyk²,

Kuryata³

et al. 2020

biologija

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The 0.025% tebuconazole (EW-250), 0.25% chlormequat chloride (CCC-750), and 0.15% ethephon (2-CEPA) influences growth processes, the leaf apparatus, chlorophyll concentration and various carbohydrates forms, and total nitrogen content in Solanum melongena L. The decrease in the linear dimensions of the aubergine was established for all preparations. The most significant decrease in height was observed after the application of 2-HEPCs. The retardants increased the number of leaves, the dry matter mass of leaves, the leaf area, chlorophyll content, and the surface density of the leaf. EW-250 and ССС-750 retardants strengthened carbohydrate accumulation in aubergine fruits, mainly due to reducing forms. During the growing season, the total and protein nitrogen content decreased in roots and stems both in control and in experiment variants. EW-250 and CCC-750 accelerated total and protein nitrogen outflow from roots and stems and increased its content in leaves. Increasing the carbohydrates content in fruits the retardants simultaneously reduced the content of various nitrogen forms. Such changes in the dynamics of total nitrogen under the influence of tebuconazole led to enhanced fruit formation on each plant. Thus, retardants EW-250 and ССС-750 changed the nature of the donor-acceptor relations in them by increasing the outflow of plastic substances from vegetative organs to fruits and increasing the culture productivity.

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Source-Sink Relationship in Litchi verses Mango: A Concept

Cited by 7 publications

References 24 publications

Dynamic of accumulation and redistribution of various carbohydrate forms and nitrogen in organs of tomatoes under treatment with retardants

Dynamic of accumulation and redistribution of various carbohydrate forms and nitrogen in organs of tomatoes under treatment with retardants

The roles of non-structural carbohydrates in fruiting: a review focusing on mango (Mangifera indica)

Influence of gibberellin inhibitors on the accumulation and redistribution of various forms of carbohydrates and nitrogen-containing compounds in plants of Solanum melongena L.

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