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Physiological significance of pedospheric nitric oxide for root growth, development and organismic interactions
Author(s) -
Ma Ming,
Wendehenne David,
Philippot Laurent,
Hänsch Robert,
Flemetakis Emmanouil,
Hu Bin,
Rennenberg Heinz
Publication year - 2020
Publication title -
plant, cell and environment
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.646
H-Index - 200
eISSN - 1365-3040
pISSN - 0140-7791
DOI - 10.1111/pce.13850
Subject(s) - abiotic component , rhizosphere , biology , nutrient , nitric oxide , symbiosis , lateral root , root (linguistics) , botany , ecology , bacteria , biochemistry , genetics , arabidopsis , mutant , gene , endocrinology , linguistics , philosophy
Nitric oxide (NO) is essential for plant growth and development, as well as interactions with abiotic and biotic environments. Its importance for multiple functions in plants means that tight regulation of NO concentrations is required. This is of particular significance in roots, where NO signalling is involved in processes, such as root growth, lateral root formation, nutrient acquisition, heavy metal homeostasis, symbiotic nitrogen fixation and root–mycorrhizal fungi interactions. The NO signal can also be produced in high levels by microbial processes in the rhizosphere, further impacting root processes. To explore these interesting interactions, in the present review, we firstly summarize current knowledge of physiological processes of NO production and consumption in roots and, thereafter, of processes involved in NO homeostasis in root cells with particular emphasis on root growth, development, nutrient acquisition, environmental stresses and organismic interactions.