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Crosstalk during the Carbon-Nitrogen Cycle That Interlinks the Biosynthesis, Mobilization and Accumulation of Seed Storage Reserves. 2021

Manpreet Kaur, and Yamini Tak, and Surekha Bhatia, and Bavita Asthir, and José M Lorenzo, and Ryszard Amarowicz
Department of Biochemistry, Punjab Agricultural University, Ludhiana 141027, Punjab, India.

Carbohydrates are the major storage reserves in seeds, and they are produced and accumulated in specific tissues during the growth and development of a plant. The storage products are hydrolyzed into a mobile form, and they are then translocated to the developing tissue following seed germination, thereby ensuring new plant formation and seedling vigor. The utilization of seed reserves is an important characteristic of seed quality. This review focuses on the seed storage reserve composition, source-sink relations and partitioning of the major transported carbohydrate form, i.e., sucrose, into different reserves through sucrolytic processes, biosynthetic pathways, interchanging levels during mobilization and crosstalk based on vital biochemical pathways that interlink the carbon and nitrogen cycles. Seed storage reserves are important due to their nutritional value; therefore, novel approaches to augmenting the targeted storage reserve are also discussed.

UI MeSH Term Description Entries
D002241 Carbohydrates A class of organic compounds composed of carbon, hydrogen, and oxygen in a ratio of Cn(H2O)n. The largest class of organic compounds, including STARCH; GLYCOGEN; CELLULOSE; POLYSACCHARIDES; and simple MONOSACCHARIDES. Carbohydrate
D012639 Seeds The encapsulated embryos of flowering plants. They are used as is or for animal feed because of the high content of concentrated nutrients like starches, proteins, and fats. Rapeseed, cottonseed, and sunflower seed are also produced for the oils (fats) they yield. Diaspores,Elaiosomes,Embryos, Plant,Plant Embryos,Plant Zygotes,Zygotes, Plant,Diaspore,Elaiosome,Embryo, Plant,Plant Embryo,Plant Zygote,Seed,Zygote, Plant
D057486 Carbon Cycle The cycle by which the element carbon is exchanged between organic matter and the earth's physical environment. Carbon Fixation,Carbon Flux,Carbon Cycles,Carbon Fixations,Carbon Fluxs,Cycle, Carbon,Cycles, Carbon,Fixation, Carbon,Fixations, Carbon,Flux, Carbon,Fluxs, Carbon
D058458 Nitrogen Cycle The circulation of nitrogen in nature, consisting of a cycle of biochemical reactions in which atmospheric nitrogen is compounded, dissolved in rain, and deposited in the soil, where it is assimilated and metabolized by animals, plants, bacteria, and fungi, eventually returning to the atmosphere by bacterial decomposition of organic matter. Ammonification,Cycle, Nitrogen,Nitrogen Cycles
D018525 Germination The initial stages of the growth of SEEDS into a SEEDLINGS. The embryonic shoot (plumule) and embryonic PLANT ROOTS (radicle) emerge and grow upwards and downwards respectively. Food reserves for germination come from endosperm tissue within the seed and/or from the seed leaves (COTYLEDON). (Concise Dictionary of Biology, 1990) Germinations
D036226 Seedlings Young plants produced at the completion of GERMINATION of SEEDS. Seedling,Malted Grain,Sprouted Seeds,Sprouts, Plant,Grain, Malted,Grains, Malted,Malted Grains,Plant Sprout,Plant Sprouts,Seed, Sprouted,Seeds, Sprouted,Sprout, Plant,Sprouted Seed

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