Staff Publications

Staff Publications

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    'Staff publications' is the digital repository of Wageningen University & Research

    'Staff publications' contains references to publications authored by Wageningen University staff from 1976 onward.

    Publications authored by the staff of the Research Institutes are available from 1995 onwards.

    Full text documents are added when available. The database is updated daily and currently holds about 240,000 items, of which 72,000 in open access.

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Record number 538886
Title Roles of nitrogen and cytokinin signals in root and shoot communications in maximizing of plant productivity and their agronomic applications
Author(s) Gu, Junfei; Li, Zhikang; Mao, Yiqi; Struik, Paul C.; Zhang, Hao; Liu, Lijun; Wang, Zhiqin; Yang, Jianchang
Source Plant Science 274 (2018). - ISSN 0168-9452 - p. 320 - 331.
DOI https://doi.org/10.1016/j.plantsci.2018.06.010
Department(s) Crop Physiology
PE&RC
Publication type Refereed Article in a scientific journal
Publication year 2018
Keyword(s) Cytokinin transport - Long-distance signaling - Nitrogen status - Root - shoot relationship - Source-sink relationship
Abstract

Nitrogen is an essential, often limiting, factor in plant growth and development. To regulate growth under limited nitrogen supply, plants sense the internal and external nitrogen status, and coordinate various metabolic processes and developmental programs accordingly. This coordination requires the transmission of various signaling molecules that move across the entire plant. Cytokinins, phytohormones derived from adenine and synthesized in various parts of the plant, are considered major local and long-distance messengers. Cytokinin metabolism and signaling are closely associated with nitrogen availability. They are systemically transported via the vasculature from plant roots to shoots, and vice versa, thereby coordinating shoot and root development. Tight linkage exists between the nitrogen signaling network and cytokinins during diverse developmental and physiological processes. However, the cytokinin-nitrogen interactions and the communication systems involved in sensing rhizospheric nitrogen status and in regulating canopy development remain obscure. We review current knowledge on cytokinin biosynthesis, transport and signaling, nitrogen acquisition, metabolism and signaling, and their interactive roles in regulating root-shoot morphological and physiological characteristics. We also discuss the role of spatio-temporal regulation of cytokinins in enhancing beneficial crop traits of yield and nitrogen use efficiency.

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