This chapter describes the role of nutrients in regulating plant processes underlying yield formation. The yield of crop plants is
controlled by biomass production and its partitioning to harvested plant organs. Biomass production is dependent on the capture
of light energy, through the photosynthetic activity of leaves (i.e., source activity) and leaf area, to provide carbon and energy
for the entire plant. Roots supply plants with water and nutrients from the soil. Nutrients are required for leaf growth and as
integral constituents of the photosynthetic apparatus. Nutrient supply also affects photosynthesis and leaf senescence indirectly
via photooxidation, hydraulic and phytohormonal signals as well as by sugar signaling. Nutrients impact respiration as constituents
of the respiratory electron chain and by their influence on the efficiency of respiratory ATP synthesis. The chapter
describes how photosynthate partitioning to plant organs is controlled by the capacity of these ...organs to utilize assimilates for
growth and storage, that is, their sink strength, and how this is influenced by nutrient supply. Nutrients play an important role
in regulating sink formation, for example, by their effects on plant architecture, flowering, pollination, and tuber initiation, as
well as in controlling storage processes in the sink organs. Nutrient supply also modifies endogenous concentrations of phytohormones
that regulate sink source relationships. The source and sink organs are physically separated. Therefore, long-distance
transport of photosynthates and nutrients in the phloem from source to sink is essential for growth and plant yield. The principles
of phloem loading of assimilates at source sites, phloem transport, and phloem unloading at the sink sites are described.
Keywords:
Mineral nutrition / yield / metabolism / hormones / phloem
Source:
Marschner’s Mineral Nutrition of Plants, 2023, 131-200
TY - CHAP
AU - Kirkby, Ernest A.
AU - Nikolic, Miroslav
AU - White, Philip John
AU - Xu, Guohua
PY - 2023
UR - http://rimsi.imsi.bg.ac.rs/handle/123456789/1612
AB - This chapter describes the role of nutrients in regulating plant processes underlying yield formation. The yield of crop plants is
controlled by biomass production and its partitioning to harvested plant organs. Biomass production is dependent on the capture
of light energy, through the photosynthetic activity of leaves (i.e., source activity) and leaf area, to provide carbon and energy
for the entire plant. Roots supply plants with water and nutrients from the soil. Nutrients are required for leaf growth and as
integral constituents of the photosynthetic apparatus. Nutrient supply also affects photosynthesis and leaf senescence indirectly
via photooxidation, hydraulic and phytohormonal signals as well as by sugar signaling. Nutrients impact respiration as constituents
of the respiratory electron chain and by their influence on the efficiency of respiratory ATP synthesis. The chapter
describes how photosynthate partitioning to plant organs is controlled by the capacity of these organs to utilize assimilates for
growth and storage, that is, their sink strength, and how this is influenced by nutrient supply. Nutrients play an important role
in regulating sink formation, for example, by their effects on plant architecture, flowering, pollination, and tuber initiation, as
well as in controlling storage processes in the sink organs. Nutrient supply also modifies endogenous concentrations of phytohormones
that regulate sink source relationships. The source and sink organs are physically separated. Therefore, long-distance
transport of photosynthates and nutrients in the phloem from source to sink is essential for growth and plant yield. The principles
of phloem loading of assimilates at source sites, phloem transport, and phloem unloading at the sink sites are described.
PB - Academic Press
T2 - Marschner’s Mineral Nutrition of Plants
T1 - Mineral nutrition, yield, and source-sink relationships
EP - 200
SP - 131
DO - 10.1016/B978-0-12-819773-8.00015-0
ER -
@inbook{
author = "Kirkby, Ernest A. and Nikolic, Miroslav and White, Philip John and Xu, Guohua",
year = "2023",
abstract = "This chapter describes the role of nutrients in regulating plant processes underlying yield formation. The yield of crop plants is
controlled by biomass production and its partitioning to harvested plant organs. Biomass production is dependent on the capture
of light energy, through the photosynthetic activity of leaves (i.e., source activity) and leaf area, to provide carbon and energy
for the entire plant. Roots supply plants with water and nutrients from the soil. Nutrients are required for leaf growth and as
integral constituents of the photosynthetic apparatus. Nutrient supply also affects photosynthesis and leaf senescence indirectly
via photooxidation, hydraulic and phytohormonal signals as well as by sugar signaling. Nutrients impact respiration as constituents
of the respiratory electron chain and by their influence on the efficiency of respiratory ATP synthesis. The chapter
describes how photosynthate partitioning to plant organs is controlled by the capacity of these organs to utilize assimilates for
growth and storage, that is, their sink strength, and how this is influenced by nutrient supply. Nutrients play an important role
in regulating sink formation, for example, by their effects on plant architecture, flowering, pollination, and tuber initiation, as
well as in controlling storage processes in the sink organs. Nutrient supply also modifies endogenous concentrations of phytohormones
that regulate sink source relationships. The source and sink organs are physically separated. Therefore, long-distance
transport of photosynthates and nutrients in the phloem from source to sink is essential for growth and plant yield. The principles
of phloem loading of assimilates at source sites, phloem transport, and phloem unloading at the sink sites are described.",
publisher = "Academic Press",
journal = "Marschner’s Mineral Nutrition of Plants",
booktitle = "Mineral nutrition, yield, and source-sink relationships",
pages = "200-131",
doi = "10.1016/B978-0-12-819773-8.00015-0"
}
Kirkby, E. A., Nikolic, M., White, P. J.,& Xu, G.. (2023). Mineral nutrition, yield, and source-sink relationships. in Marschner’s Mineral Nutrition of Plants
Academic Press., 131-200.
https://doi.org/10.1016/B978-0-12-819773-8.00015-0
Kirkby EA, Nikolic M, White PJ, Xu G. Mineral nutrition, yield, and source-sink relationships. in Marschner’s Mineral Nutrition of Plants. 2023;:131-200.
doi:10.1016/B978-0-12-819773-8.00015-0 .
Kirkby, Ernest A., Nikolic, Miroslav, White, Philip John, Xu, Guohua, "Mineral nutrition, yield, and source-sink relationships" in Marschner’s Mineral Nutrition of Plants (2023):131-200,
https://doi.org/10.1016/B978-0-12-819773-8.00015-0 . .
