Haemoglobin modulates NO emission and hyponasty under hypoxia-related stress in Arabidopsis thaliana

• Published in: Journal of experimental botany Vol. 63; no. 15; pp. 5581 - 5591
• Main Authors: Hebelstrup, Kim H, van Zanten, Martijn, Mandon, Julien, Voesenek, Laurentius A.C.J, Harren, Frans J. M, Cristescu, Simona M, Møller, Ian M, Mur, Luis A. J
• Format: Journal Article
• Language: English
• Published: Oxford Oxford University Press [etc.] 01.09.2012; Oxford University Press
• Subjects: anaerobic conditions; analysis; Arabidopsis; Arabidopsis - genetics; Arabidopsis - metabolism; Arabidopsis - physiology; Arabidopsis Proteins; Arabidopsis Proteins - genetics; Arabidopsis Proteins - metabolism; Arabidopsis thaliana; Biological and medical sciences; ethylene; ethylene production; Ethylenes; Ethylenes - analysis; Ethylenes - metabolism; Floods; Fundamental and applied biological sciences. Psychology; gases; Gene Expression; Gene Expression Regulation, Plant; gene overexpression; genes; genetics; hemoglobin; Hemoglobins; Hemoglobins - genetics; Hemoglobins - metabolism; hypocotyls; hypoxia; leaves; metabolism; Models, Biological; nitrates; nitric oxide; Nitric Oxide - analysis; Nitric Oxide - metabolism; nitrogen; Nitrogen - metabolism; normoxia; oxygen; Oxygen - metabolism; Phenotype; physiology; Plant Leaves; Plant Leaves - genetics; Plant Leaves - metabolism; Plant Leaves - physiology; Plant physiology and development; Plant Roots; Plant Roots - genetics; Plant Roots - metabolism; Plant Roots - physiology; Plant Shoots; Plant Shoots - genetics; Plant Shoots - metabolism; Plant Shoots - physiology; Research Paper; roots; S-Nitrosothiols; S-Nitrosothiols - analysis; S-Nitrosothiols - metabolism; shoots; Signal Transduction; Stress, Physiological; thiols; Up-Regulation; hyponastic growth; nitric oxide (NO); Growth; Ethylene; Submersion; flooding; Stress; Arabidopsis thaliana; haemoglobin; Cruciferae; Dicotyledones; Modulation; Nitric oxide; Angiospermae; Botany; Hypoxia; Spermatophyta; Experimental plant

Nitric oxide (NO) and ethylene are signalling molecules that are synthesized in response to oxygen depletion. Non-symbiotic plant haemoglobins (Hbs) have been demonstrated to act in roots under oxygen depletion to scavenge NO. Using Arabidopsis thaliana plants, the online emission of NO or ethylene...